[2936] | 1 | /* |
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| 2 | * ---------------------------------------------------------------------- |
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| 3 | * TkFFMPEG: video |
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| 4 | * |
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| 5 | * These routines support the methods in the "video" class, which is |
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| 6 | * a video stream that can be read from or written to. The class |
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| 7 | * itself is defined in itcl, but when methods are called, execution |
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| 8 | * jumps down to this level. |
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| 9 | * ====================================================================== |
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| 10 | * AUTHOR: Michael McLennan, Purdue University |
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| 11 | * Copyright (c) 2004-2008 Purdue Research Foundation |
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| 12 | * |
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| 13 | * See the file "license.terms" for information on usage and |
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| 14 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 15 | * ====================================================================== |
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| 16 | */ |
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| 17 | |
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| 18 | #include <stdlib.h> |
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| 19 | #include <string.h> |
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| 20 | |
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| 21 | #include "config.h" |
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| 22 | |
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| 23 | #ifdef HAVE_FFMPEG_AVCODEC_H |
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| 24 | # include <ffmpeg/avcodec.h> |
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| 25 | #endif |
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| 26 | |
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| 27 | #ifdef HAVE_LIBAVCODEC_AVCODEC_H |
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| 28 | # include <libavcodec/avcodec.h> |
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| 29 | #endif |
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| 30 | |
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| 31 | #ifdef HAVE_FFMPEG_AVFORMAT_H |
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| 32 | # include <ffmpeg/avformat.h> |
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| 33 | #endif |
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| 34 | |
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| 35 | #ifdef HAVE_LIBAVFORMAT_AVFORMAT_H |
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| 36 | # include <libavformat/avformat.h> |
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| 37 | #endif |
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| 38 | |
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| 39 | #ifdef HAVE_FFMPEG_AVUTIL_H |
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| 40 | # include <ffmpeg/avutil.h> |
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| 41 | #endif |
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| 42 | |
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| 43 | #ifdef HAVE_LIBAVUTIL_AVUTIL_H |
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| 44 | # include <libavutil/avutil.h> |
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| 45 | #endif |
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| 46 | |
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| 47 | #ifdef HAVE_FFMPEG_SWSCALE_H |
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| 48 | # include <ffmpeg/swscale.h> |
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| 49 | #endif |
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| 50 | |
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| 51 | #ifdef HAVE_LIBSWSCALE_SWSCALE_H |
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| 52 | # include <libswscale/swscale.h> |
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| 53 | #endif |
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| 54 | |
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| 55 | #include "RpVideo.h" |
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| 56 | |
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| 57 | #ifndef HAVE_AVMEDIA_TYPE_VIDEO |
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| 58 | #define AVMEDIA_TYPE_VIDEO CODEC_TYPE_VIDEO |
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| 59 | #endif /* HAVE_AVMEDIA_TYPE_VIDEO */ |
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| 60 | |
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| 61 | #ifndef AV_PKT_FLAG_KEY |
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| 62 | #define AV_PKT_FLAG_KEY PKT_FLAG_KEY |
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| 63 | #endif |
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| 64 | |
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| 65 | #ifndef HAVE_AVIO_CLOSE |
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| 66 | #define avio_close url_fclose |
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| 67 | #endif |
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| 68 | |
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| 69 | /* |
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| 70 | * Each video object is represented by the following data: |
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| 71 | */ |
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| 72 | struct VideoObjRec { |
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| 73 | int magic; |
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| 74 | |
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| 75 | /* video input */ |
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| 76 | AVFormatContext *pFormatCtx; |
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| 77 | int videoStream; |
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| 78 | int frameNumber; |
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| 79 | int atEnd; |
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| 80 | |
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| 81 | /* video output */ |
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| 82 | AVFormatContext *outFormatCtx; |
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| 83 | AVStream *outVideoStr; |
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| 84 | |
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| 85 | /* used for both input/output */ |
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| 86 | AVFrame *pFrameYUV; |
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| 87 | uint8_t *yuvbuffer; |
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| 88 | int yuvw, yuvh; |
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| 89 | AVFrame *pFrameRGB; |
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| 90 | uint8_t *rgbbuffer; |
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| 91 | int rgbw, rgbh; |
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| 92 | struct SwsContext *scalingCtx; |
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| 93 | |
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| 94 | char *fileName; |
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| 95 | char mode[64]; |
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| 96 | char fmt[64]; |
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| 97 | int lastframe; |
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| 98 | |
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| 99 | /* tmp buffer to give images back to user */ |
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| 100 | void *img; |
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| 101 | int imgHeaderLen; |
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| 102 | int imgWidth; |
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| 103 | int imgHeight; |
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| 104 | }; |
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| 105 | |
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| 106 | /* magic stamp for VideoObj, to make sure data is valid */ |
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| 107 | #define VIDEO_OBJ_MAGIC 0x0102abcd |
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| 108 | |
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| 109 | static VideoObj *VideoSetData (); |
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| 110 | |
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| 111 | static int VideoModeRead (VideoObj *vidPtr); |
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| 112 | // static int VideoModeWrite (Tcl_Interp *interp, int w, int h); |
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| 113 | |
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| 114 | static int VideoTime2Frame (AVStream *streamPtr, int64_t tval); |
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| 115 | static int64_t VideoFrame2Time (AVStream *streamPtr, int fval); |
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| 116 | static void VideoNextFrame (VideoObj *vidPtr); |
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| 117 | |
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| 118 | uint64_t global_video_pkt_pts = AV_NOPTS_VALUE; |
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| 119 | static int VideoAvGetBuffer (struct AVCodecContext *c, AVFrame *fr); |
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| 120 | static void VideoAvReleaseBuffer (struct AVCodecContext *c, AVFrame *fr); |
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| 121 | static int VideoWriteFrame (VideoObj *vidPtr, AVFrame *framePtr); |
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| 122 | |
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| 123 | static int VideoAllocImgBuffer (VideoObj *vidPtr, int width, int height); |
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| 124 | static int VideoFreeImgBuffer (VideoObj *vidPtr); |
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| 125 | static double VideoTransformFrames2Duration (VideoObj *vidPtr, int frame); |
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| 126 | static int VideoTransformDuration2Frames (VideoObj *vidPtr, double duration); |
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| 127 | |
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| 128 | /* |
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| 129 | * ------------------------------------------------------------------------ |
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| 130 | * VideoSetData() |
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| 131 | * |
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| 132 | * Saves VideoObj data in the "_videodata" slot in the current object |
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| 133 | * context. The data can be retrieved later by calling VideoGetData(). |
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| 134 | * ------------------------------------------------------------------------ |
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| 135 | */ |
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| 136 | VideoObj * |
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| 137 | VideoSetData() |
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| 138 | { |
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| 139 | VideoObj* vid = NULL; |
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| 140 | |
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| 141 | vid = malloc(sizeof(VideoObj)); |
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| 142 | |
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| 143 | if (vid == NULL) { |
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| 144 | return NULL; |
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| 145 | } |
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| 146 | |
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| 147 | vid->magic = VIDEO_OBJ_MAGIC; |
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| 148 | vid->pFormatCtx = NULL; |
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| 149 | vid->videoStream = 0; |
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| 150 | vid->frameNumber = -1; |
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| 151 | vid->atEnd = 0; |
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| 152 | |
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| 153 | vid->outFormatCtx = NULL; |
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| 154 | vid->outVideoStr = NULL; |
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| 155 | |
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| 156 | vid->pFrameYUV = NULL; |
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| 157 | vid->yuvbuffer = NULL; |
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| 158 | vid->yuvw = 0; |
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| 159 | vid->yuvh = 0; |
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| 160 | vid->pFrameRGB = NULL; |
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| 161 | vid->rgbbuffer = NULL; |
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| 162 | vid->rgbw = 0; |
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| 163 | vid->rgbh = 0; |
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| 164 | vid->scalingCtx = NULL; |
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| 165 | |
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| 166 | vid->fileName = NULL; |
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| 167 | *vid->mode = '\0'; |
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| 168 | *vid->fmt = '\0'; |
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| 169 | vid->lastframe = 0; |
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| 170 | |
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| 171 | vid->img = NULL; |
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| 172 | vid->imgHeaderLen = 0; |
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| 173 | vid->imgWidth = 0; |
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| 174 | vid->imgHeight = 0; |
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| 175 | |
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| 176 | return vid; |
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| 177 | } |
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| 178 | |
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| 179 | /* |
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| 180 | * ------------------------------------------------------------------------ |
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| 181 | * VideoFindLastFrame() |
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| 182 | * |
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| 183 | * Find the last readable frame. |
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| 184 | * ------------------------------------------------------------------------ |
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| 185 | */ |
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| 186 | int |
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| 187 | VideoFindLastFrame(vidPtr,lastframe) |
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| 188 | VideoObj *vidPtr; |
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| 189 | int *lastframe; |
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| 190 | { |
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| 191 | int f = 0; |
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| 192 | int nframe = 0; |
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| 193 | int cur = 0; |
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| 194 | AVStream *vstreamPtr; |
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| 195 | |
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| 196 | if (vidPtr == NULL) { |
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| 197 | return -1; |
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| 198 | } |
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| 199 | |
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| 200 | if (lastframe == NULL) { |
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| 201 | return -1; |
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| 202 | } |
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| 203 | |
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| 204 | if (VideoModeRead(vidPtr) != 0) { |
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| 205 | return -1; |
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| 206 | } |
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| 207 | |
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| 208 | // calculate an estimate of the last frame |
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| 209 | vstreamPtr = vidPtr->pFormatCtx->streams[vidPtr->videoStream]; |
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| 210 | nframe = VideoTime2Frame(vstreamPtr, |
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| 211 | vstreamPtr->start_time + vstreamPtr->duration); |
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| 212 | |
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| 213 | // get the real last readable frame |
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| 214 | // is 50 frames far enough to go back |
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| 215 | // to be outside of the last key frame? |
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| 216 | f = vidPtr->frameNumber; |
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| 217 | cur = VideoGoToN(vidPtr,nframe-50); |
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| 218 | while (cur != nframe) { |
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| 219 | cur = nframe; |
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| 220 | nframe = VideoGoNext(vidPtr); |
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| 221 | } |
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| 222 | *lastframe = nframe; |
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| 223 | VideoGoToN(vidPtr,f); |
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| 224 | |
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| 225 | return 0; |
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| 226 | } |
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| 227 | |
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| 228 | |
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| 229 | int |
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| 230 | VideoOpenFile(vidPtr, fileName, mode) |
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| 231 | VideoObj *vidPtr; |
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| 232 | const char *fileName; |
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| 233 | const char *mode; |
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| 234 | { |
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| 235 | int fnlen = 0; |
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| 236 | int err = 0; |
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| 237 | int lastframe = 0; |
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| 238 | |
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| 239 | if (fileName == NULL) { |
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| 240 | // missing value for fileName |
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| 241 | // return TCL_ERROR; |
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| 242 | return -1; |
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| 243 | } |
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| 244 | if (fileName == '\0') { |
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| 245 | /* no file name set -- do nothing */ |
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| 246 | return 0; |
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| 247 | } |
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| 248 | |
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| 249 | fnlen = strlen(fileName); |
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| 250 | if (vidPtr->fileName != NULL) { |
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| 251 | free(vidPtr->fileName); |
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| 252 | } |
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| 253 | vidPtr->fileName = (char *) malloc((fnlen+1)*sizeof(char)); |
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| 254 | if (vidPtr->fileName == NULL) { |
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| 255 | // trouble mallocing space |
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| 256 | return -1; |
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| 257 | } |
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| 258 | strncpy(vidPtr->fileName,fileName,fnlen); |
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| 259 | vidPtr->fileName[fnlen] = '\0'; |
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| 260 | |
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| 261 | // FIXME: remove this constraint when we support |
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| 262 | // the modes: r, r+, w, w+, a, a+, b and combinations |
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| 263 | if (strlen(mode) > 1) { |
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| 264 | return -1; |
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| 265 | } |
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| 266 | |
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| 267 | if (*mode == 'r') { |
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| 268 | /* we're now in "input" mode */ |
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| 269 | err = VideoModeRead(vidPtr); |
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| 270 | if (err) { |
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| 271 | return err; |
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| 272 | } |
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| 273 | |
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| 274 | VideoFindLastFrame(vidPtr,&lastframe); |
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| 275 | vidPtr->lastframe = lastframe; |
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| 276 | } else if (*mode == 'w') { |
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| 277 | /* we're now in "input" mode */ |
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| 278 | // VideoModeWrite(vidPtr); |
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| 279 | } else { |
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| 280 | // unrecognized mode |
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| 281 | return -1; |
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| 282 | } |
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| 283 | |
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| 284 | return 0; |
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| 285 | } |
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| 286 | |
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| 287 | |
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| 288 | /* |
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| 289 | * ------------------------------------------------------------------------ |
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| 290 | * VideoModeRead() |
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| 291 | * |
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| 292 | * Tries to force this video stream into "read" mode. If the current |
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| 293 | * mode is "", then the -file is opened for reading. If the current |
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| 294 | * mode is "write", then the stream is closed and then opened for |
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| 295 | * reading. If the current mode is "read", then this call does nothing. |
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| 296 | * Usually called just before a "read" operation (get, go, etc.) is |
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| 297 | * performed. |
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| 298 | * |
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| 299 | * Returns TCL_OK if successful, and TCL_ERROR if there is a problem |
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| 300 | * opening or closing the stream. |
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| 301 | * |
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| 302 | * Error Codes |
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| 303 | * -1 |
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| 304 | * -2 missing file name |
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| 305 | * -3 couldn't open file |
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| 306 | * -4 couldn't find streams in file |
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| 307 | * -5 couldn't find video stream in file |
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| 308 | * -6 unsupported codec for file |
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| 309 | * -7 couldn't open codec for file |
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| 310 | * -8 couldn't allocate frame space |
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| 311 | * -9 strcpy input to vidPtr->mode failed |
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| 312 | * ------------------------------------------------------------------------ |
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| 313 | */ |
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| 314 | int |
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| 315 | VideoModeRead(vidPtr) |
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| 316 | VideoObj *vidPtr; |
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| 317 | { |
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| 318 | int i; |
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| 319 | const char *fmt; |
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| 320 | AVCodecContext *vcodecCtx; |
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| 321 | AVCodec *vcodec; |
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| 322 | |
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| 323 | if (vidPtr == NULL) { |
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| 324 | return -1; |
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| 325 | } |
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| 326 | |
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| 327 | if (vidPtr->fileName == NULL) { |
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| 328 | // Tcl_AppendResult(interp, "missing value for -file", (char*)NULL); |
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| 329 | // return TCL_ERROR; |
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| 330 | |
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| 331 | // missing file name |
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| 332 | return -2; |
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| 333 | } |
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| 334 | if (*vidPtr->fileName == '\0') { |
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| 335 | /* no file name set -- do nothing */ |
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| 336 | return 0; |
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| 337 | } |
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| 338 | |
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| 339 | if (strcmp(vidPtr->mode,"input") == 0) { |
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| 340 | return 0; |
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| 341 | } else if (strcmp(vidPtr->mode,"output") == 0) { |
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| 342 | if (VideoClose(vidPtr) != 0) { |
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| 343 | return -1; |
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| 344 | } |
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| 345 | } |
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| 346 | |
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| 347 | /* |
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| 348 | * Open the video stream from that file. |
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| 349 | */ |
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| 350 | #ifdef HAVE_AVFORMAT_OPEN_INPUT |
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| 351 | if (avformat_open_input(&vidPtr->pFormatCtx, vidPtr->fileName, NULL, |
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| 352 | NULL) != 0) { |
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| 353 | return -3; |
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| 354 | } |
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| 355 | #else |
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| 356 | if (av_open_input_file(&vidPtr->pFormatCtx, vidPtr->fileName, |
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| 357 | NULL, 0, NULL) != 0) { |
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| 358 | return -3; |
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| 359 | } |
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| 360 | #endif |
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| 361 | #ifdef HAVE_AVFORMAT_FIND_STREAM_INFO |
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| 362 | if (avformat_find_stream_info(vidPtr->pFormatCtx, NULL) < 0) { |
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| 363 | #else |
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| 364 | if (av_find_stream_info(vidPtr->pFormatCtx) < 0) { |
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| 365 | #endif |
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| 366 | // Tcl_AppendResult(interp, "couldn't find streams in file \"", |
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| 367 | // fileName, "\"", (char*)NULL); |
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| 368 | // return TCL_ERROR; |
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| 369 | |
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| 370 | // couldn't find streams in file |
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| 371 | return -4; |
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| 372 | } |
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| 373 | |
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| 374 | /* |
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| 375 | * Search for a video stream and its codec. |
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| 376 | */ |
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| 377 | vidPtr->videoStream = -1; |
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| 378 | for (i=0; i < vidPtr->pFormatCtx->nb_streams; i++) { |
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| 379 | if (vidPtr->pFormatCtx->streams[i]->codec->codec_type |
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| 380 | == AVMEDIA_TYPE_VIDEO) { |
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| 381 | vidPtr->videoStream = i; |
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| 382 | break; |
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| 383 | } |
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| 384 | } |
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| 385 | if (vidPtr->videoStream < 0) { |
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| 386 | // Tcl_AppendResult(interp, "couldn't find video stream in file \"", |
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| 387 | // fileName, "\"", (char*)NULL); |
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| 388 | // return TCL_ERROR; |
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| 389 | |
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| 390 | // couldn't find video stream in file |
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| 391 | return -5; |
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| 392 | } |
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| 393 | |
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| 394 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
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| 395 | vcodec = avcodec_find_decoder(vcodecCtx->codec_id); |
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| 396 | if (vcodec == NULL) { |
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| 397 | // Tcl_AppendResult(interp, "unsupported codec for file \"", |
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| 398 | // fileName, "\"", (char*)NULL); |
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| 399 | // return TCL_ERROR; |
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| 400 | |
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| 401 | // unsupported codec for file |
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| 402 | return -6; |
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| 403 | } |
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| 404 | #ifdef HAVE_AVCODEC_OPEN2 |
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| 405 | if (avcodec_open2(vcodecCtx, vcodec, NULL) < 0) { |
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| 406 | #else |
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| 407 | if (avcodec_open(vcodecCtx, vcodec) < 0) { |
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| 408 | #endif |
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| 409 | // Tcl_AppendResult(interp, "couldn't open codec for file \"", |
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| 410 | // fileName, "\"", (char*)NULL); |
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| 411 | // return TCL_ERROR; |
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| 412 | |
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| 413 | // couldn't open codec for file |
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| 414 | return -7; |
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| 415 | } |
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| 416 | |
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| 417 | vcodecCtx->get_buffer = VideoAvGetBuffer; |
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| 418 | vcodecCtx->release_buffer = VideoAvReleaseBuffer; |
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| 419 | |
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| 420 | vidPtr->pFrameYUV = avcodec_alloc_frame(); |
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| 421 | vidPtr->pFrameRGB = avcodec_alloc_frame(); |
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| 422 | if (vidPtr->pFrameYUV == NULL || vidPtr->pFrameRGB == NULL) { |
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| 423 | // Tcl_AppendResult(interp, "couldn't allocate frame space", |
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| 424 | // " for file \"", fileName, "\"", (char*)NULL); |
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| 425 | // return TCL_ERROR; |
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| 426 | |
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| 427 | // couldn't allocate frame space |
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| 428 | return -8; |
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| 429 | } |
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| 430 | |
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| 431 | /* save the name of the codec as the -format option */ |
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| 432 | fmt = "?"; |
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| 433 | if (vcodecCtx->codec && vcodecCtx->codec->name) { |
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| 434 | fmt = vcodecCtx->codec->name; |
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| 435 | strcpy(vidPtr->fmt,fmt); |
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| 436 | } |
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| 437 | // |
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| 438 | // sprintf(buffer, "%d", vcodecCtx->width); |
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| 439 | // if (Tcl_SetVar(interp, "width", buffer, TCL_LEAVE_ERR_MSG) == NULL) { |
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| 440 | // return TCL_ERROR; |
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| 441 | // } |
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| 442 | // sprintf(buffer, "%d", vcodecCtx->height); |
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| 443 | // if (Tcl_SetVar(interp, "height", buffer, TCL_LEAVE_ERR_MSG) == NULL) { |
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| 444 | // return TCL_ERROR; |
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| 445 | // } |
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| 446 | // |
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| 447 | |
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| 448 | if (strcpy(vidPtr->mode,"input") == NULL) { |
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| 449 | // strcpy input to vidPtr->mode failed |
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| 450 | return -9; |
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| 451 | } |
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| 452 | |
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| 453 | return 0; |
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| 454 | } |
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| 455 | |
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| 456 | |
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| 457 | // FIXME: get this function working. |
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| 458 | ///* |
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| 459 | // * ------------------------------------------------------------------------ |
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| 460 | // * VideoModeWrite() |
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| 461 | // * |
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| 462 | // * Tries to force this video stream into "write" mode. If the current |
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| 463 | // * mode is "", then the -file is opened for writing. If the current |
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| 464 | // * mode is "read", then the stream is closed and then opened for |
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| 465 | // * writing. If the current mode is "write", then this call does nothing. |
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| 466 | // * Usually called just before a "write" operation (put, etc.) is |
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| 467 | // * performed. |
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| 468 | // * |
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| 469 | // * Returns TCL_OK if successful, and TCL_ERROR if there is a problem |
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| 470 | // * opening or closing the stream. |
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| 471 | // * ------------------------------------------------------------------------ |
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| 472 | // */ |
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| 473 | //int |
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| 474 | //VideoModeWrite(vidPtr, fileName, width, height, fmt) |
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| 475 | // VideoObj *vidPtr; /* video object to write */ |
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| 476 | // CONST84 char *fileName; |
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| 477 | // int width; /* native width of each frame */ |
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| 478 | // int height; /* native height of each frame */ |
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| 479 | // CONST84 char *fmt |
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| 480 | //{ |
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| 481 | // char c; |
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| 482 | // int numBytes, pixfmt, iwd, iht; |
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| 483 | // CONST84 char *size; |
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| 484 | // AVCodecContext *codecCtx; |
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| 485 | // AVCodec *vcodec; |
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| 486 | // |
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| 487 | // if (vidPtr == NULL) { |
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| 488 | // return -1; |
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| 489 | // } |
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| 490 | // |
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| 491 | // /* |
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| 492 | // * Get the current mode. If we're already in "output", then we're |
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| 493 | // * done. Otherwise, close the stream if necessary and prepare to |
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| 494 | // * open the file for write. |
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| 495 | // */ |
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| 496 | // if (vidPtr->mode == NULL) { |
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| 497 | // return -1; |
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| 498 | // } |
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| 499 | // |
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| 500 | // c = *vidPtr->mode; |
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| 501 | // if (c == 'o' && strcmp(vidPtr->mode,"output") == 0) { |
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| 502 | // return 0; |
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| 503 | // } |
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| 504 | // else if (c == 'i' && strcmp(vidPtr->mode,"input") == 0) { |
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| 505 | // if (VideoClose(vidPtr) != 0) { |
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| 506 | // return -1; |
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| 507 | // } |
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| 508 | // } |
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| 509 | // |
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| 510 | // /* |
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| 511 | // * Get the file name from the -file variable. |
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| 512 | // */ |
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| 513 | // if ((fileName == NULL) || (*filename == '\0')) { |
---|
| 514 | // /* no file name set -- do nothing */ |
---|
| 515 | // return 0; |
---|
| 516 | // } |
---|
| 517 | // |
---|
| 518 | // /* |
---|
| 519 | // * Get the -width and -height of each frame. If these are set |
---|
| 520 | // * to 0 (default), then use the incoming width/height from an |
---|
| 521 | // * actual frame. |
---|
| 522 | // */ |
---|
| 523 | // iwd = width; |
---|
| 524 | // iht = height; |
---|
| 525 | // |
---|
| 526 | // /* |
---|
| 527 | // * Get the format argument. |
---|
| 528 | // */ |
---|
| 529 | // if (fmt == NULL) { |
---|
| 530 | //// Tcl_AppendResult(interp, "missing value for -format", (char*)NULL); |
---|
| 531 | //// return TCL_ERROR; |
---|
| 532 | // return -1; |
---|
| 533 | // } |
---|
| 534 | // if (strcmp(fmt,"mpeg1video") == 0) { |
---|
| 535 | // vidPtr->outFormatCtx = av_alloc_format_context(); |
---|
| 536 | // vidPtr->outFormatCtx->oformat = guess_format("mpeg", NULL, NULL); |
---|
| 537 | // } |
---|
| 538 | // else if (strcmp(fmt,"flv") == 0) { |
---|
| 539 | // vidPtr->outFormatCtx = av_alloc_format_context(); |
---|
| 540 | // vidPtr->outFormatCtx->oformat = guess_format("flv", NULL, NULL); |
---|
| 541 | // } |
---|
| 542 | // else if (strcmp(fmt,"mov") == 0) { |
---|
| 543 | // vidPtr->outFormatCtx = av_alloc_format_context(); |
---|
| 544 | // vidPtr->outFormatCtx->oformat = guess_format("mov", NULL, NULL); |
---|
| 545 | // /* MOV normally uses MPEG4, but that may not be installed */ |
---|
| 546 | // vidPtr->outFormatCtx->oformat->video_codec = CODEC_ID_FFV1; |
---|
| 547 | // } |
---|
| 548 | // else if (strcmp(fmt,"avi") == 0) { |
---|
| 549 | // vidPtr->outFormatCtx = av_alloc_format_context(); |
---|
| 550 | // vidPtr->outFormatCtx->oformat = guess_format("avi", NULL, NULL); |
---|
| 551 | // /* AVI normally uses MPEG4, but that may not be installed */ |
---|
| 552 | // vidPtr->outFormatCtx->oformat->video_codec = CODEC_ID_FFV1; |
---|
| 553 | // } |
---|
| 554 | // else { |
---|
| 555 | //// Tcl_AppendResult(interp, "bad format \"", fmt, "\": should be", |
---|
| 556 | //// " avi, flv, mpeg1video, mov", (char*)NULL); |
---|
| 557 | //// return TCL_ERROR; |
---|
| 558 | // return -1; |
---|
| 559 | // } |
---|
| 560 | // |
---|
| 561 | // /* |
---|
| 562 | // * Open the video stream for writing. |
---|
| 563 | // */ |
---|
| 564 | // strncpy(vidPtr->outFormatCtx->filename, fileName, |
---|
| 565 | // sizeof(vidPtr->outFormatCtx->filename)); |
---|
| 566 | // |
---|
| 567 | // vidPtr->outVideoStr = av_new_stream(vidPtr->outFormatCtx, 0); |
---|
| 568 | // if (vidPtr->outVideoStr == NULL) { |
---|
| 569 | //// Tcl_AppendResult(interp, "internal error:", |
---|
| 570 | //// " problem opening stream", (char*)NULL); |
---|
| 571 | //// return TCL_ERROR; |
---|
| 572 | // retunr -1; |
---|
| 573 | // } |
---|
| 574 | // codecCtx = vidPtr->outVideoStr->codec; |
---|
| 575 | // |
---|
| 576 | // codecCtx->codec_id = vidPtr->outFormatCtx->oformat->video_codec; |
---|
| 577 | // codecCtx->codec_type = CODEC_TYPE_VIDEO; |
---|
| 578 | // |
---|
| 579 | // /* put sample parameters */ |
---|
| 580 | // codecCtx->bit_rate = 400000; |
---|
| 581 | // /* resolution must be a multiple of two */ |
---|
| 582 | // codecCtx->width = (iwd/2)*2; |
---|
| 583 | // codecCtx->height = (iht/2)*2; |
---|
| 584 | // codecCtx->time_base.den = 24; |
---|
| 585 | // codecCtx->time_base.num = 1; |
---|
| 586 | // codecCtx->gop_size = 12; /* emit one intra frame every so often */ |
---|
| 587 | // codecCtx->pix_fmt = PIX_FMT_YUV420P; |
---|
| 588 | // if (codecCtx->codec_id == CODEC_ID_MPEG2VIDEO) { |
---|
| 589 | // codecCtx->max_b_frames = 2; |
---|
| 590 | // } |
---|
| 591 | // |
---|
| 592 | // /* find the video encoder */ |
---|
| 593 | // vcodec = avcodec_find_encoder(codecCtx->codec_id); |
---|
| 594 | // if (!vcodec || avcodec_open(codecCtx, vcodec) < 0) { |
---|
| 595 | // // Tcl_AppendResult(interp, "internal error:", |
---|
| 596 | // // " problem opening codec", (char*)NULL); |
---|
| 597 | // // return TCL_ERROR; |
---|
| 598 | // return -1; |
---|
| 599 | // } |
---|
| 600 | // |
---|
| 601 | // if (av_set_parameters(vidPtr->outFormatCtx, NULL) < 0) { |
---|
| 602 | // // Tcl_AppendResult(interp, "internal error:", |
---|
| 603 | // // " problem in av_set_parameters()", (char*)NULL); |
---|
| 604 | // // return TCL_ERROR; |
---|
| 605 | // return -1; |
---|
| 606 | // } |
---|
| 607 | // |
---|
| 608 | // if (url_fopen(&vidPtr->outFormatCtx->pb, fileName, URL_WRONLY) < 0) { |
---|
| 609 | // // Tcl_AppendResult(interp, "can't open file \"", fileName, |
---|
| 610 | // // "\"", (char*)NULL); |
---|
| 611 | // // return TCL_ERROR; |
---|
| 612 | // return -1; |
---|
| 613 | // } |
---|
| 614 | // av_write_header(vidPtr->outFormatCtx); |
---|
| 615 | // |
---|
| 616 | // vidPtr->pFrameYUV = avcodec_alloc_frame(); |
---|
| 617 | // vidPtr->pFrameRGB = avcodec_alloc_frame(); |
---|
| 618 | // if (vidPtr->pFrameYUV == NULL || vidPtr->pFrameRGB == NULL) { |
---|
| 619 | // // Tcl_AppendResult(interp, "couldn't allocate frame space", |
---|
| 620 | // // " for file \"", fileName, "\"", (char*)NULL); |
---|
| 621 | // // return TCL_ERROR; |
---|
| 622 | // return -1; |
---|
| 623 | // } |
---|
| 624 | // |
---|
| 625 | // vidPtr->yuvw = vidPtr->outVideoStr->codec->width; |
---|
| 626 | // vidPtr->yuvh = vidPtr->outVideoStr->codec->height; |
---|
| 627 | // pixfmt = vidPtr->outVideoStr->codec->pix_fmt; |
---|
| 628 | // |
---|
| 629 | // numBytes = avpicture_get_size(pixfmt, vidPtr->yuvw, vidPtr->yuvh); |
---|
| 630 | // vidPtr->yuvbuffer = (uint8_t*)av_malloc(numBytes*sizeof(uint8_t)); |
---|
| 631 | // |
---|
| 632 | // avpicture_fill((AVPicture*)vidPtr->pFrameYUV, vidPtr->yuvbuffer, |
---|
| 633 | // pixfmt, vidPtr->yuvw, vidPtr->yuvh); |
---|
| 634 | // |
---|
| 635 | // |
---|
| 636 | // if (strcpy(vid->mode,"output") == NULL) { |
---|
| 637 | // return -1; |
---|
| 638 | // } |
---|
| 639 | // |
---|
| 640 | // return 0; |
---|
| 641 | //} |
---|
| 642 | |
---|
| 643 | |
---|
| 644 | /* |
---|
| 645 | * ------------------------------------------------------------------------ |
---|
| 646 | * VideoTime2Frame() |
---|
| 647 | * |
---|
| 648 | * Converts a time value (as defined by the FFMPEG package) into an |
---|
| 649 | * integer frame number in the range 0-end for the stream. |
---|
| 650 | * ------------------------------------------------------------------------ |
---|
| 651 | */ |
---|
| 652 | int |
---|
| 653 | VideoTime2Frame(streamPtr, tval) |
---|
| 654 | AVStream *streamPtr; /* scale values according to this stream */ |
---|
| 655 | int64_t tval; /* time value as defined by stream */ |
---|
| 656 | { |
---|
| 657 | AVRational one, factor; |
---|
| 658 | one.num = 1; |
---|
| 659 | one.den = 1; |
---|
| 660 | factor.num = streamPtr->time_base.num * streamPtr->r_frame_rate.num; |
---|
| 661 | factor.den = streamPtr->time_base.den * streamPtr->r_frame_rate.den; |
---|
| 662 | |
---|
| 663 | if (tval > streamPtr->start_time) { |
---|
| 664 | tval -= streamPtr->start_time; |
---|
| 665 | } else { |
---|
| 666 | tval = 0; |
---|
| 667 | } |
---|
| 668 | tval = av_rescale_q(tval, factor, one); |
---|
| 669 | return (int)tval; |
---|
| 670 | } |
---|
| 671 | |
---|
| 672 | /* |
---|
| 673 | * ------------------------------------------------------------------------ |
---|
| 674 | * VideoFrame2Time() |
---|
| 675 | * |
---|
| 676 | * Converts a frame number 0-end to the corresponding time value |
---|
| 677 | * (as defined by FFMPEG) for the given stream. |
---|
| 678 | * ------------------------------------------------------------------------ |
---|
| 679 | */ |
---|
| 680 | int64_t |
---|
| 681 | VideoFrame2Time(streamPtr, fval) |
---|
| 682 | AVStream *streamPtr; /* scale values according to this stream */ |
---|
| 683 | int fval; /* frame value in the range 0-end */ |
---|
| 684 | { |
---|
| 685 | int64_t tval; |
---|
| 686 | AVRational one, factor; |
---|
| 687 | one.num = 1; |
---|
| 688 | one.den = 1; |
---|
| 689 | |
---|
| 690 | factor.num = streamPtr->time_base.num * streamPtr->r_frame_rate.num; |
---|
| 691 | factor.den = streamPtr->time_base.den * streamPtr->r_frame_rate.den; |
---|
| 692 | |
---|
| 693 | tval = av_rescale_q((int64_t)fval, one, factor) + streamPtr->start_time; |
---|
| 694 | return tval; |
---|
| 695 | } |
---|
| 696 | |
---|
| 697 | /* |
---|
| 698 | * ------------------------------------------------------------------------ |
---|
| 699 | * VideoNextFrame() |
---|
| 700 | * |
---|
| 701 | * Decodes a series of video packets until the end of the frame |
---|
| 702 | * is reached. Updates the frameNumber and atEnd to maintain the |
---|
| 703 | * current status for this video stream. |
---|
| 704 | * ------------------------------------------------------------------------ |
---|
| 705 | */ |
---|
| 706 | void |
---|
| 707 | VideoNextFrame(vidPtr) |
---|
| 708 | VideoObj *vidPtr; /* get a frame from this video stream */ |
---|
| 709 | { |
---|
| 710 | int frameFinished; |
---|
| 711 | uint64_t pts; |
---|
| 712 | AVCodecContext *vcodecCtx; |
---|
| 713 | AVStream *vstreamPtr; |
---|
| 714 | AVPacket packet; |
---|
| 715 | |
---|
| 716 | if (vidPtr->pFormatCtx) { |
---|
| 717 | vstreamPtr = vidPtr->pFormatCtx->streams[vidPtr->videoStream]; |
---|
| 718 | vcodecCtx = vstreamPtr->codec; |
---|
| 719 | |
---|
| 720 | /* |
---|
| 721 | * Decode as many packets as necessary to get the next frame. |
---|
| 722 | */ |
---|
| 723 | pts = 0; |
---|
| 724 | while (1) { |
---|
| 725 | if (av_read_frame(vidPtr->pFormatCtx, &packet) >= 0) { |
---|
| 726 | if (packet.stream_index == vidPtr->videoStream) { |
---|
| 727 | /* save pts so we can grab it again in VideoAvGetBuffer */ |
---|
| 728 | global_video_pkt_pts = packet.pts; |
---|
| 729 | |
---|
| 730 | #ifdef HAVE_AVCODEC_DECODE_VIDEO2 |
---|
| 731 | // new avcodec decode video function |
---|
| 732 | avcodec_decode_video2(vcodecCtx, vidPtr->pFrameYUV, |
---|
| 733 | &frameFinished, &packet); |
---|
| 734 | #else |
---|
| 735 | // old avcodec decode video function |
---|
| 736 | avcodec_decode_video(vcodecCtx, vidPtr->pFrameYUV, |
---|
| 737 | &frameFinished, packet.data, packet.size); |
---|
| 738 | #endif |
---|
| 739 | if (packet.dts == AV_NOPTS_VALUE |
---|
| 740 | && vidPtr->pFrameYUV->opaque |
---|
| 741 | && *(uint64_t*)vidPtr->pFrameYUV->opaque != AV_NOPTS_VALUE) { |
---|
| 742 | pts = *(uint64_t*)vidPtr->pFrameYUV->opaque; |
---|
| 743 | } else if (packet.dts != AV_NOPTS_VALUE) { |
---|
| 744 | pts = packet.dts; |
---|
| 745 | } else { |
---|
| 746 | pts = 0; |
---|
| 747 | } |
---|
| 748 | |
---|
| 749 | if (frameFinished) { |
---|
| 750 | vidPtr->frameNumber = VideoTime2Frame(vstreamPtr, pts); |
---|
| 751 | break; |
---|
| 752 | } |
---|
| 753 | } |
---|
| 754 | } else { |
---|
| 755 | vidPtr->atEnd = 1; |
---|
| 756 | break; |
---|
| 757 | } |
---|
| 758 | } |
---|
| 759 | av_free_packet(&packet); |
---|
| 760 | } |
---|
| 761 | } |
---|
| 762 | |
---|
| 763 | /* |
---|
| 764 | * ------------------------------------------------------------------------ |
---|
| 765 | * These two routines are called whenever a frame buffer is allocated, |
---|
| 766 | * which means that we're starting a new frame. Grab the global pts |
---|
| 767 | * counter and squirrel it away in the opaque slot of the frame. This |
---|
| 768 | * will give us a pts value that we can trust later. |
---|
| 769 | * ------------------------------------------------------------------------ |
---|
| 770 | */ |
---|
| 771 | int |
---|
| 772 | VideoAvGetBuffer(c,fr) |
---|
| 773 | AVCodecContext *c; /* codec doing the frame decoding */ |
---|
| 774 | AVFrame *fr; /* frame being decoded */ |
---|
| 775 | { |
---|
| 776 | int rval = avcodec_default_get_buffer(c, fr); |
---|
| 777 | uint64_t *ptsPtr = av_malloc(sizeof(uint64_t)); |
---|
| 778 | *ptsPtr = global_video_pkt_pts; |
---|
| 779 | fr->opaque = ptsPtr; |
---|
| 780 | return rval; |
---|
| 781 | } |
---|
| 782 | |
---|
| 783 | void |
---|
| 784 | VideoAvReleaseBuffer(c,fr) |
---|
| 785 | AVCodecContext *c; /* codec doing the frame decoding */ |
---|
| 786 | AVFrame *fr; /* frame being decoded */ |
---|
| 787 | { |
---|
| 788 | if (fr && fr->opaque) { |
---|
| 789 | av_freep(&fr->opaque); |
---|
| 790 | } |
---|
| 791 | avcodec_default_release_buffer(c,fr); |
---|
| 792 | } |
---|
| 793 | |
---|
| 794 | /* |
---|
| 795 | * ------------------------------------------------------------------------ |
---|
| 796 | * VideoInit() |
---|
| 797 | * |
---|
| 798 | * Implements the body of the _ffmpeg_init method in the "video" class. |
---|
| 799 | * Initializes the basic data structure and stores it in the _videodata |
---|
| 800 | * variable within the class. |
---|
| 801 | * ------------------------------------------------------------------------ |
---|
| 802 | */ |
---|
| 803 | VideoObj * |
---|
| 804 | VideoInit() |
---|
| 805 | { |
---|
| 806 | /* |
---|
| 807 | * Create an object to represent this video stream. |
---|
| 808 | */ |
---|
| 809 | |
---|
| 810 | /* Register all codecs and formats */ |
---|
| 811 | av_register_all(); |
---|
| 812 | |
---|
| 813 | return VideoSetData(); |
---|
| 814 | } |
---|
| 815 | |
---|
| 816 | /* |
---|
| 817 | * ------------------------------------------------------------------------ |
---|
| 818 | * VideoCleanup() |
---|
| 819 | * |
---|
| 820 | * Implements the body of the _ffmpeg_cleanup method in the "video" class. |
---|
| 821 | * Accesses the data structure stored in the _videodata variable and |
---|
| 822 | * frees up the data. |
---|
| 823 | * ------------------------------------------------------------------------ |
---|
| 824 | */ |
---|
| 825 | int |
---|
| 826 | VideoCleanup(vidPtr) |
---|
| 827 | VideoObj *vidPtr; |
---|
| 828 | { |
---|
| 829 | /* |
---|
| 830 | * Nothing much to do here. Just close the file in case it is |
---|
| 831 | * still open. Don't free vidPtr itself; that is cleaned up by |
---|
| 832 | * the ByteArrayObj in the class data member. |
---|
| 833 | */ |
---|
| 834 | int ret = 0; |
---|
| 835 | |
---|
| 836 | ret -= VideoClose(vidPtr); |
---|
| 837 | |
---|
| 838 | if (vidPtr != NULL) { |
---|
| 839 | VideoFreeImgBuffer(vidPtr); |
---|
| 840 | if (vidPtr->fileName != NULL) { |
---|
| 841 | free(vidPtr->fileName); |
---|
| 842 | vidPtr->fileName = NULL; |
---|
| 843 | } |
---|
| 844 | free(vidPtr); |
---|
| 845 | vidPtr = NULL; |
---|
| 846 | // FIXME: need a test to make sure vidPtr is null after the function returns. |
---|
| 847 | } |
---|
| 848 | |
---|
| 849 | return ret; |
---|
| 850 | } |
---|
| 851 | |
---|
| 852 | /* |
---|
| 853 | * ------------------------------------------------------------------------ |
---|
| 854 | * VideoSize() |
---|
| 855 | * |
---|
| 856 | * Implements the body of the "size" method in the "video" class. |
---|
| 857 | * Returns the size of each frame in this video stream as a list {w h}. |
---|
| 858 | * ------------------------------------------------------------------------ |
---|
| 859 | */ |
---|
| 860 | int |
---|
| 861 | VideoSize(vidPtr, width, height) |
---|
| 862 | VideoObj *vidPtr; |
---|
| 863 | int *width; |
---|
| 864 | int *height; |
---|
| 865 | { |
---|
| 866 | AVCodecContext *vcodecCtx; |
---|
| 867 | |
---|
| 868 | if (vidPtr == NULL) { |
---|
| 869 | return -1; |
---|
| 870 | } |
---|
| 871 | |
---|
| 872 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 873 | // "internal error: video stream is not open", |
---|
| 874 | return -1; |
---|
| 875 | } |
---|
| 876 | |
---|
| 877 | if (vidPtr->pFormatCtx) { |
---|
| 878 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
---|
| 879 | if (width != NULL) { |
---|
| 880 | *width = vcodecCtx->width; |
---|
| 881 | } |
---|
| 882 | if (height != NULL) { |
---|
| 883 | *height = vcodecCtx->height; |
---|
| 884 | } |
---|
| 885 | } |
---|
| 886 | return 0; |
---|
| 887 | } |
---|
| 888 | |
---|
| 889 | /* |
---|
| 890 | * ------------------------------------------------------------------------ |
---|
| 891 | * VideoGo() |
---|
| 892 | * |
---|
| 893 | * Implements the body of the "go" method in the "video" class. |
---|
| 894 | * Advances by one or more frames, or seeks backward in the stream. |
---|
| 895 | * Handles the following syntax: |
---|
| 896 | * obj go next ...... go to next frame (same as +1) |
---|
| 897 | * obj go +n ........ advance by n frames |
---|
| 898 | * obj go -n ........ go back by n frames |
---|
| 899 | * obj go n ......... go to frame n |
---|
| 900 | * ------------------------------------------------------------------------ |
---|
| 901 | */ |
---|
| 902 | int |
---|
| 903 | VideoGoNext(vidPtr) |
---|
| 904 | VideoObj *vidPtr; |
---|
| 905 | { |
---|
| 906 | int nabs; |
---|
| 907 | |
---|
| 908 | if (vidPtr == NULL) { |
---|
| 909 | return -1; |
---|
| 910 | } |
---|
| 911 | |
---|
| 912 | nabs = vidPtr->frameNumber + 1; |
---|
| 913 | return VideoGoToN(vidPtr, nabs); |
---|
| 914 | } |
---|
| 915 | |
---|
| 916 | int |
---|
| 917 | VideoGoPlusMinusN(vidPtr, n) |
---|
| 918 | VideoObj *vidPtr; |
---|
| 919 | int n; |
---|
| 920 | { |
---|
| 921 | int nabs; |
---|
| 922 | |
---|
| 923 | if (vidPtr == NULL) { |
---|
| 924 | return -1; |
---|
| 925 | } |
---|
| 926 | |
---|
| 927 | nabs = vidPtr->frameNumber + n; |
---|
| 928 | return VideoGoToN(vidPtr, nabs); |
---|
| 929 | } |
---|
| 930 | |
---|
| 931 | int |
---|
| 932 | VideoGoToN(vidPtr, n) |
---|
| 933 | VideoObj *vidPtr; |
---|
| 934 | int n; |
---|
| 935 | { |
---|
| 936 | int nrel, nabs, seekFlags, gotframe; |
---|
| 937 | int64_t nseek; |
---|
| 938 | AVCodecContext *vcodecCtx; |
---|
| 939 | AVStream *vstreamPtr; |
---|
| 940 | |
---|
| 941 | if (vidPtr == NULL) { |
---|
| 942 | return -1; |
---|
| 943 | } |
---|
| 944 | |
---|
| 945 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 946 | // "internal error: video stream is not open", |
---|
| 947 | return -1; |
---|
| 948 | } |
---|
| 949 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
---|
| 950 | |
---|
| 951 | nabs = n; |
---|
| 952 | |
---|
| 953 | if (nabs < 0) { |
---|
| 954 | nabs = 0; |
---|
| 955 | } |
---|
| 956 | |
---|
| 957 | if (nabs < vidPtr->frameNumber) { |
---|
| 958 | seekFlags = AVSEEK_FLAG_BACKWARD; |
---|
| 959 | } else { |
---|
| 960 | seekFlags = 0; |
---|
| 961 | } |
---|
| 962 | |
---|
| 963 | /* |
---|
| 964 | * If we're going to an absolute frame, or if we're going backward |
---|
| 965 | * or too far forward, then seek the frame. |
---|
| 966 | */ |
---|
| 967 | nrel = nabs-vidPtr->frameNumber; |
---|
| 968 | if ((nrel > 50) || (seekFlags&AVSEEK_FLAG_BACKWARD)) { |
---|
| 969 | |
---|
| 970 | vstreamPtr = vidPtr->pFormatCtx->streams[vidPtr->videoStream]; |
---|
| 971 | nseek = VideoFrame2Time(vstreamPtr, nabs); |
---|
| 972 | // not sure why it is checking against the number 100 |
---|
| 973 | if (nseek > 100) { |
---|
| 974 | nseek -= 100; |
---|
| 975 | } else { |
---|
| 976 | nseek = 0; |
---|
| 977 | } |
---|
| 978 | |
---|
| 979 | /* first, seek the nearest reference frame for a good starting pt */ |
---|
| 980 | av_seek_frame(vidPtr->pFormatCtx, vidPtr->videoStream, |
---|
| 981 | nseek, seekFlags); |
---|
| 982 | |
---|
| 983 | // this doesn't seem to give me back the true frame number |
---|
| 984 | // feels like it is more of a reverse of the VideoFrame2Time call |
---|
| 985 | // because vidPtr->frameNumber always equals nabs |
---|
| 986 | vidPtr->frameNumber = VideoTime2Frame(vstreamPtr, nseek); |
---|
| 987 | vidPtr->atEnd = 0; |
---|
| 988 | |
---|
| 989 | /* read the frame to figure out what the frame number is */ |
---|
| 990 | VideoNextFrame(vidPtr); |
---|
| 991 | |
---|
| 992 | /* then, move forward until we reach the desired frame */ |
---|
| 993 | gotframe = 0; |
---|
| 994 | while (vidPtr->frameNumber < nabs && !vidPtr->atEnd) { |
---|
| 995 | VideoNextFrame(vidPtr); |
---|
| 996 | gotframe = 1; |
---|
| 997 | } |
---|
| 998 | |
---|
| 999 | /* get at least one frame, unless we're done or at the beginning*/ |
---|
| 1000 | if (!gotframe && !vidPtr->atEnd) { |
---|
| 1001 | if (vidPtr->frameNumber > nabs) { |
---|
| 1002 | // we are probably at a key frame, just past |
---|
| 1003 | // the requested frame and need to seek backwards. |
---|
| 1004 | VideoGoToN(vidPtr,n); |
---|
| 1005 | } else { |
---|
| 1006 | VideoNextFrame(vidPtr); |
---|
| 1007 | } |
---|
| 1008 | } |
---|
| 1009 | } |
---|
| 1010 | else { |
---|
| 1011 | while (nrel-- > 0) { |
---|
| 1012 | VideoNextFrame(vidPtr); |
---|
| 1013 | } |
---|
| 1014 | } |
---|
| 1015 | |
---|
| 1016 | /* |
---|
| 1017 | * Send back the current frame number or "end" as the result. |
---|
| 1018 | */ |
---|
| 1019 | return vidPtr->frameNumber; |
---|
| 1020 | } |
---|
| 1021 | |
---|
| 1022 | /* |
---|
| 1023 | * ------------------------------------------------------------------------ |
---|
| 1024 | * VideoGet() |
---|
| 1025 | * |
---|
| 1026 | * Implements the body of the "get" method in the "video" class. |
---|
| 1027 | * Returns information about the current frame via the following |
---|
| 1028 | * syntax: |
---|
| 1029 | * obj get start|position|end |
---|
| 1030 | * obj get <imageHandle> |
---|
| 1031 | * ------------------------------------------------------------------------ |
---|
| 1032 | */ |
---|
| 1033 | int |
---|
| 1034 | VideoGetImage(vidPtr, iw, ih, img, bufSize) |
---|
| 1035 | VideoObj *vidPtr; |
---|
| 1036 | int iw; |
---|
| 1037 | int ih; |
---|
| 1038 | void **img; |
---|
| 1039 | int *bufSize; |
---|
| 1040 | { |
---|
| 1041 | |
---|
| 1042 | int numBytes; |
---|
| 1043 | AVCodecContext *vcodecCtx; |
---|
| 1044 | |
---|
| 1045 | if (vidPtr == NULL) { |
---|
| 1046 | return -1; |
---|
| 1047 | } |
---|
| 1048 | |
---|
| 1049 | if (VideoModeRead(vidPtr) != 0) { |
---|
| 1050 | return -1; |
---|
| 1051 | } |
---|
| 1052 | |
---|
| 1053 | /* |
---|
| 1054 | if (vidPtr->pFormatCtx) { |
---|
| 1055 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
---|
| 1056 | } else { |
---|
| 1057 | vcodecCtx = NULL; |
---|
| 1058 | } |
---|
| 1059 | */ |
---|
| 1060 | |
---|
| 1061 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 1062 | // vidPtr->pFormatCtx is NULL, video not open |
---|
| 1063 | return -1; |
---|
| 1064 | } |
---|
| 1065 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
---|
| 1066 | |
---|
| 1067 | /* |
---|
| 1068 | * Query the size for this photo and make sure that we have a |
---|
| 1069 | * buffer of the appropriate size for software scaling and |
---|
| 1070 | * format conversion. |
---|
| 1071 | */ |
---|
| 1072 | |
---|
| 1073 | // if the user's desired size is less then 0, |
---|
| 1074 | // use the default size |
---|
| 1075 | |
---|
| 1076 | if (iw < 0) { |
---|
| 1077 | iw = vcodecCtx->width; |
---|
| 1078 | } |
---|
| 1079 | if (ih < 0) { |
---|
| 1080 | ih = vcodecCtx->height; |
---|
| 1081 | } |
---|
| 1082 | |
---|
| 1083 | |
---|
| 1084 | if (iw != vidPtr->rgbw || ih != vidPtr->rgbh) { |
---|
| 1085 | if (vidPtr->rgbbuffer) { |
---|
| 1086 | av_free(vidPtr->rgbbuffer); |
---|
| 1087 | vidPtr->rgbbuffer = NULL; |
---|
| 1088 | } |
---|
| 1089 | numBytes = avpicture_get_size(PIX_FMT_RGB24, iw, ih); |
---|
| 1090 | vidPtr->rgbbuffer = (uint8_t*)av_malloc(numBytes*sizeof(uint8_t)); |
---|
| 1091 | vidPtr->rgbw = iw; |
---|
| 1092 | vidPtr->rgbh = ih; |
---|
| 1093 | |
---|
| 1094 | avpicture_fill((AVPicture*)vidPtr->pFrameRGB, vidPtr->rgbbuffer, |
---|
| 1095 | PIX_FMT_RGB24, iw, ih); |
---|
| 1096 | |
---|
| 1097 | vidPtr->scalingCtx = sws_getCachedContext(vidPtr->scalingCtx, |
---|
| 1098 | vcodecCtx->width, vcodecCtx->height, vcodecCtx->pix_fmt, |
---|
| 1099 | iw, ih, PIX_FMT_RGB24, SWS_BICUBIC|SWS_PRINT_INFO, NULL, NULL, NULL); |
---|
| 1100 | } |
---|
| 1101 | |
---|
| 1102 | /* |
---|
| 1103 | * Rescale the current frame to the desired size, and translate |
---|
| 1104 | * into RGB format so we can copy into the destination image. |
---|
| 1105 | */ |
---|
| 1106 | if (vidPtr->pFrameYUV && vidPtr->pFrameYUV->data[0]) { |
---|
| 1107 | sws_scale(vidPtr->scalingCtx, (const uint8_t * const*) |
---|
| 1108 | vidPtr->pFrameYUV->data, vidPtr->pFrameYUV->linesize, |
---|
| 1109 | 0, vcodecCtx->height, |
---|
| 1110 | vidPtr->pFrameRGB->data, vidPtr->pFrameRGB->linesize); |
---|
| 1111 | |
---|
| 1112 | /* |
---|
| 1113 | iblock.pixelPtr = (unsigned char*)vidPtr->pFrameRGB->data[0]; |
---|
| 1114 | iblock.width = iw; |
---|
| 1115 | iblock.height = ih; |
---|
| 1116 | iblock.pitch = vidPtr->pFrameRGB->linesize[0]; |
---|
| 1117 | iblock.pixelSize = 3; |
---|
| 1118 | iblock.offset[0] = 0; |
---|
| 1119 | iblock.offset[1] = 1; |
---|
| 1120 | iblock.offset[2] = 2; |
---|
| 1121 | iblock.offset[3] = 0; |
---|
| 1122 | |
---|
| 1123 | Tk_PhotoPutBlock_NoComposite(img, &iblock, 0, 0, iw, ih); |
---|
| 1124 | */ |
---|
| 1125 | |
---|
| 1126 | if (vidPtr->img == NULL) { |
---|
| 1127 | VideoAllocImgBuffer(vidPtr,iw,ih); |
---|
| 1128 | } else { |
---|
| 1129 | if ((vidPtr->imgWidth != iw) && (vidPtr->imgHeight != ih)) { |
---|
| 1130 | // new height or width |
---|
| 1131 | // resize the image buffer |
---|
| 1132 | free(vidPtr->img); |
---|
| 1133 | VideoAllocImgBuffer(vidPtr,iw,ih); |
---|
| 1134 | } |
---|
| 1135 | } |
---|
| 1136 | |
---|
| 1137 | // Write pixel data |
---|
| 1138 | memcpy(vidPtr->img+vidPtr->imgHeaderLen, |
---|
| 1139 | vidPtr->pFrameRGB->data[0], |
---|
| 1140 | vidPtr->imgWidth*3*vidPtr->imgHeight); |
---|
| 1141 | } |
---|
| 1142 | *img = vidPtr->img; |
---|
| 1143 | *bufSize = (vidPtr->imgWidth*3*vidPtr->imgHeight) + vidPtr->imgHeaderLen; |
---|
| 1144 | return 0; |
---|
| 1145 | } |
---|
| 1146 | |
---|
| 1147 | int |
---|
| 1148 | VideoFrameRate (vidPtr, fr) |
---|
| 1149 | VideoObj *vidPtr; |
---|
| 1150 | double *fr; |
---|
| 1151 | { |
---|
| 1152 | AVStream *vstreamPtr; |
---|
| 1153 | |
---|
| 1154 | if (vidPtr == NULL) { |
---|
| 1155 | return -1; |
---|
| 1156 | } |
---|
| 1157 | |
---|
| 1158 | if (fr == NULL) { |
---|
| 1159 | return -1; |
---|
| 1160 | } |
---|
| 1161 | |
---|
| 1162 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 1163 | // vidPtr->pFormatCtx is NULL, video not open |
---|
| 1164 | return -1; |
---|
| 1165 | } |
---|
| 1166 | vstreamPtr = vidPtr->pFormatCtx->streams[vidPtr->videoStream]; |
---|
| 1167 | |
---|
| 1168 | // http://trac.handbrake.fr/browser/trunk/libhb/decavcodec.c?rev=1490#L684 |
---|
| 1169 | // there seems to be some controversy over what structure holds |
---|
| 1170 | // the correct frame rate information for different video codecs. |
---|
| 1171 | // for now we will use the stream's r_frame_rate. |
---|
| 1172 | // from the above post, it looks like this value can be interpreted |
---|
| 1173 | // as frames per second. |
---|
| 1174 | *fr = av_q2d(vstreamPtr->r_frame_rate); |
---|
| 1175 | |
---|
| 1176 | return 0; |
---|
| 1177 | } |
---|
| 1178 | |
---|
| 1179 | int |
---|
| 1180 | VideoFileName (vidPtr, fname) |
---|
| 1181 | VideoObj *vidPtr; |
---|
| 1182 | const char **fname; |
---|
| 1183 | { |
---|
| 1184 | if (vidPtr == NULL) { |
---|
| 1185 | return -1; |
---|
| 1186 | } |
---|
| 1187 | |
---|
| 1188 | if (fname == NULL) { |
---|
| 1189 | return -1; |
---|
| 1190 | } |
---|
| 1191 | |
---|
| 1192 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 1193 | // vidPtr->pFormatCtx is NULL, video not open |
---|
| 1194 | return -1; |
---|
| 1195 | } |
---|
| 1196 | |
---|
| 1197 | *fname = vidPtr->fileName; |
---|
| 1198 | |
---|
| 1199 | return 0; |
---|
| 1200 | } |
---|
| 1201 | |
---|
| 1202 | int |
---|
| 1203 | VideoPixelAspectRatio (vidPtr, num, den) |
---|
| 1204 | VideoObj *vidPtr; |
---|
| 1205 | int *num; |
---|
| 1206 | int *den; |
---|
| 1207 | { |
---|
| 1208 | AVCodecContext *vcodecCtx; |
---|
| 1209 | |
---|
| 1210 | if (vidPtr == NULL) { |
---|
| 1211 | return -1; |
---|
| 1212 | } |
---|
| 1213 | |
---|
| 1214 | if ((num == NULL) || (den == NULL)) { |
---|
| 1215 | return -1; |
---|
| 1216 | } |
---|
| 1217 | |
---|
| 1218 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 1219 | // vidPtr->pFormatCtx is NULL, video not open |
---|
| 1220 | return -1; |
---|
| 1221 | } |
---|
| 1222 | |
---|
| 1223 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
---|
| 1224 | |
---|
| 1225 | *num = vcodecCtx->sample_aspect_ratio.num; |
---|
| 1226 | *den = vcodecCtx->sample_aspect_ratio.den; |
---|
| 1227 | |
---|
| 1228 | return 0; |
---|
| 1229 | } |
---|
| 1230 | |
---|
| 1231 | int |
---|
| 1232 | VideoDisplayAspectRatio (vidPtr, num, den) |
---|
| 1233 | VideoObj *vidPtr; |
---|
| 1234 | int *num; |
---|
| 1235 | int *den; |
---|
| 1236 | { |
---|
| 1237 | int width = 0; |
---|
| 1238 | int height = 0; |
---|
| 1239 | int64_t gcd = 0; |
---|
| 1240 | |
---|
| 1241 | if (vidPtr == NULL) { |
---|
| 1242 | return -1; |
---|
| 1243 | } |
---|
| 1244 | |
---|
| 1245 | if ((num == NULL) || (den == NULL)) { |
---|
| 1246 | return -1; |
---|
| 1247 | } |
---|
| 1248 | |
---|
| 1249 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 1250 | // vidPtr->pFormatCtx is NULL, video not open |
---|
| 1251 | return -1; |
---|
| 1252 | } |
---|
| 1253 | |
---|
| 1254 | VideoSize(vidPtr, &width, &height); |
---|
| 1255 | VideoPixelAspectRatio(vidPtr, num, den); |
---|
| 1256 | |
---|
| 1257 | width = (*num)*width; |
---|
| 1258 | height = (*den)*height; |
---|
| 1259 | #ifdef FFMPEG_COMMON_H |
---|
| 1260 | // old gcd function |
---|
| 1261 | gcd = ff_gcd(FFABS(width), FFABS(height)); |
---|
| 1262 | #else |
---|
| 1263 | // new gcd function |
---|
| 1264 | gcd = av_gcd(FFABS(width), FFABS(height)); |
---|
| 1265 | #endif |
---|
| 1266 | |
---|
| 1267 | |
---|
| 1268 | *num = width/gcd; |
---|
| 1269 | *den = height/gcd; |
---|
| 1270 | |
---|
| 1271 | if (*den == 0) { |
---|
| 1272 | *num = 0; |
---|
| 1273 | *den = 1; |
---|
| 1274 | } |
---|
| 1275 | |
---|
| 1276 | return 0; |
---|
| 1277 | } |
---|
| 1278 | |
---|
| 1279 | int |
---|
| 1280 | VideoAllocImgBuffer(vidPtr, width, height) |
---|
| 1281 | VideoObj *vidPtr; |
---|
| 1282 | int width; |
---|
| 1283 | int height; |
---|
| 1284 | { |
---|
| 1285 | |
---|
| 1286 | char header[64]; |
---|
| 1287 | int headerLen = 0; |
---|
| 1288 | int bufsize = 0; |
---|
| 1289 | |
---|
| 1290 | sprintf(header,"P6\n%d %d\n255\n", width, height); |
---|
| 1291 | headerLen = strlen(header); |
---|
| 1292 | bufsize = headerLen + (width*3*height); |
---|
| 1293 | vidPtr->img = (void*) malloc(bufsize); |
---|
| 1294 | vidPtr->imgHeaderLen = headerLen; |
---|
| 1295 | vidPtr->imgWidth = width; |
---|
| 1296 | vidPtr->imgHeight = height; |
---|
| 1297 | memcpy(vidPtr->img,header,headerLen); |
---|
| 1298 | |
---|
| 1299 | return 0; |
---|
| 1300 | } |
---|
| 1301 | |
---|
| 1302 | int |
---|
| 1303 | VideoFreeImgBuffer(vidPtr) |
---|
| 1304 | VideoObj *vidPtr; |
---|
| 1305 | { |
---|
| 1306 | if ((vidPtr != NULL) && (vidPtr->img != NULL)) { |
---|
| 1307 | free(vidPtr->img); |
---|
| 1308 | vidPtr->img = NULL; |
---|
| 1309 | } |
---|
| 1310 | return 0; |
---|
| 1311 | } |
---|
| 1312 | |
---|
| 1313 | int |
---|
| 1314 | VideoGetPositionCur(vidPtr, pos) |
---|
| 1315 | VideoObj *vidPtr; /* video object to act on */ |
---|
| 1316 | int *pos; |
---|
| 1317 | { |
---|
| 1318 | int fnum = -1; |
---|
| 1319 | |
---|
| 1320 | if (vidPtr == NULL) { |
---|
| 1321 | return -1; |
---|
| 1322 | } |
---|
| 1323 | |
---|
| 1324 | if (pos == NULL) { |
---|
| 1325 | return -1; |
---|
| 1326 | } |
---|
| 1327 | |
---|
| 1328 | if (VideoModeRead(vidPtr) != 0) { |
---|
| 1329 | return -1; |
---|
| 1330 | } |
---|
| 1331 | |
---|
| 1332 | if (vidPtr->pFormatCtx) { |
---|
| 1333 | fnum = vidPtr->frameNumber; |
---|
| 1334 | } |
---|
| 1335 | |
---|
| 1336 | *pos = fnum; |
---|
| 1337 | return 0; |
---|
| 1338 | } |
---|
| 1339 | |
---|
| 1340 | int |
---|
| 1341 | VideoGetPositionEnd(vidPtr, pos) |
---|
| 1342 | VideoObj *vidPtr; /* video object to act on */ |
---|
| 1343 | int *pos; |
---|
| 1344 | { |
---|
| 1345 | if (vidPtr == NULL) { |
---|
| 1346 | return -1; |
---|
| 1347 | } |
---|
| 1348 | |
---|
| 1349 | if (pos == NULL) { |
---|
| 1350 | return -1; |
---|
| 1351 | } |
---|
| 1352 | |
---|
| 1353 | if (VideoModeRead(vidPtr) != 0) { |
---|
| 1354 | return -1; |
---|
| 1355 | } |
---|
| 1356 | |
---|
| 1357 | *pos = vidPtr->lastframe; |
---|
| 1358 | return 0; |
---|
| 1359 | } |
---|
| 1360 | |
---|
| 1361 | // FIXME: get this function working |
---|
| 1362 | ///* |
---|
| 1363 | // * ------------------------------------------------------------------------ |
---|
| 1364 | // * VideoPut() |
---|
| 1365 | // * |
---|
| 1366 | // * Implements the body of the "put" method in the "video" class. |
---|
| 1367 | // * Stores a single frame into the video stream: |
---|
| 1368 | // * obj put <imageHandle> |
---|
| 1369 | // * ------------------------------------------------------------------------ |
---|
| 1370 | // */ |
---|
| 1371 | //int |
---|
| 1372 | //VideoPut(cdata, interp, argc, argv) |
---|
| 1373 | // ClientData cdata; /* not used */ |
---|
| 1374 | // Tcl_Interp *interp; /* interpreter */ |
---|
| 1375 | // int argc; /* number of arguments */ |
---|
| 1376 | // CONST84 char* argv[]; /* argument strings */ |
---|
| 1377 | //{ |
---|
| 1378 | // VideoObj *vidPtr; |
---|
| 1379 | // int iw, ih, numBytes, roffs, goffs, boffs; |
---|
| 1380 | // char buffer[64]; |
---|
| 1381 | // unsigned char* photodata; |
---|
| 1382 | // uint8_t* rgbdata; |
---|
| 1383 | // Tk_PhotoHandle img; |
---|
| 1384 | // Tk_PhotoImageBlock iblock; |
---|
| 1385 | // AVCodecContext *codecCtx; |
---|
| 1386 | // |
---|
| 1387 | // if (VideoGetData(interp, &vidPtr) != TCL_OK) { |
---|
| 1388 | // return TCL_ERROR; |
---|
| 1389 | // } |
---|
| 1390 | // |
---|
| 1391 | // if (argc != 2) { |
---|
| 1392 | // Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
---|
| 1393 | // " image\"", (char*)NULL); |
---|
| 1394 | // return TCL_ERROR; |
---|
| 1395 | // } |
---|
| 1396 | // |
---|
| 1397 | // /* |
---|
| 1398 | // * Get the name of the image and copy from it. |
---|
| 1399 | // */ |
---|
| 1400 | // img = Tk_FindPhoto(interp, argv[1]); |
---|
| 1401 | // if (img == NULL) { |
---|
| 1402 | // Tcl_AppendResult(interp, "bad value \"", argv[1], |
---|
| 1403 | // "\": expected photo image", (char*)NULL); |
---|
| 1404 | // return TCL_ERROR; |
---|
| 1405 | // } |
---|
| 1406 | // |
---|
| 1407 | // /* |
---|
| 1408 | // * Query the size for this photo and make sure that we have a |
---|
| 1409 | // * buffer of the appropriate size for software scaling and |
---|
| 1410 | // * format conversion. |
---|
| 1411 | // */ |
---|
| 1412 | // Tk_PhotoGetImage(img, &iblock); |
---|
| 1413 | // Tk_PhotoGetSize(img, &iw, &ih); |
---|
| 1414 | // |
---|
| 1415 | // if (VideoModeWrite(interp, iw, ih) != TCL_OK) { |
---|
| 1416 | // return TCL_ERROR; |
---|
| 1417 | // } |
---|
| 1418 | // codecCtx = vidPtr->outVideoStr->codec; |
---|
| 1419 | // |
---|
| 1420 | // if (iw != vidPtr->rgbw || ih != vidPtr->rgbh) { |
---|
| 1421 | // if (vidPtr->rgbbuffer) { |
---|
| 1422 | // av_free(vidPtr->rgbbuffer); |
---|
| 1423 | // vidPtr->rgbbuffer = NULL; |
---|
| 1424 | // } |
---|
| 1425 | // numBytes = avpicture_get_size(PIX_FMT_RGB24, iw, ih); |
---|
| 1426 | // vidPtr->rgbbuffer = (uint8_t*)av_malloc(numBytes*sizeof(uint8_t)); |
---|
| 1427 | // vidPtr->rgbw = iw; |
---|
| 1428 | // vidPtr->rgbh = ih; |
---|
| 1429 | // |
---|
| 1430 | // avpicture_fill((AVPicture*)vidPtr->pFrameRGB, vidPtr->rgbbuffer, |
---|
| 1431 | // PIX_FMT_RGB24, iw, ih); |
---|
| 1432 | // |
---|
| 1433 | // vidPtr->scalingCtx = sws_getCachedContext(vidPtr->scalingCtx, |
---|
| 1434 | // iw, ih, PIX_FMT_RGB24, |
---|
| 1435 | // codecCtx->width, codecCtx->height, codecCtx->pix_fmt, |
---|
| 1436 | // SWS_BICUBIC, NULL, NULL, NULL); |
---|
| 1437 | // } |
---|
| 1438 | // |
---|
| 1439 | // /* |
---|
| 1440 | // * Copy the data from the Tk photo block into the RGB frame. |
---|
| 1441 | // */ |
---|
| 1442 | // roffs = iblock.offset[0]; |
---|
| 1443 | // goffs = iblock.offset[1]; |
---|
| 1444 | // boffs = iblock.offset[2]; |
---|
| 1445 | // |
---|
| 1446 | // for (ih=0; ih < iblock.height; ih++) { |
---|
| 1447 | // rgbdata = vidPtr->pFrameRGB->data[0] + ih*vidPtr->pFrameRGB->linesize[0]; |
---|
| 1448 | // photodata = iblock.pixelPtr + ih*iblock.pitch; |
---|
| 1449 | // for (iw=0; iw < iblock.width; iw++) { |
---|
| 1450 | // rgbdata[0] = photodata[roffs]; |
---|
| 1451 | // rgbdata[1] = photodata[goffs]; |
---|
| 1452 | // rgbdata[2] = photodata[boffs]; |
---|
| 1453 | // rgbdata += 3; |
---|
| 1454 | // photodata += iblock.pixelSize; |
---|
| 1455 | // } |
---|
| 1456 | // } |
---|
| 1457 | // |
---|
| 1458 | // /* |
---|
| 1459 | // * Rescale the current frame to the desired size, and translate |
---|
| 1460 | // * from RGB to YUV so we can give the frame to the codec. |
---|
| 1461 | // */ |
---|
| 1462 | // sws_scale(vidPtr->scalingCtx, |
---|
| 1463 | // vidPtr->pFrameRGB->data, vidPtr->pFrameRGB->linesize, |
---|
| 1464 | // 0, ih, |
---|
| 1465 | // vidPtr->pFrameYUV->data, vidPtr->pFrameYUV->linesize); |
---|
| 1466 | // |
---|
| 1467 | // numBytes = VideoWriteFrame(vidPtr, vidPtr->pFrameYUV); |
---|
| 1468 | // if (numBytes < 0) { |
---|
| 1469 | // Tcl_AppendResult(interp, "error in av_write_frame()", (char*)NULL); |
---|
| 1470 | // return TCL_ERROR; |
---|
| 1471 | // } |
---|
| 1472 | // sprintf(buffer, "frame %d (%d bytes)", vidPtr->frameNumber++, numBytes); |
---|
| 1473 | // Tcl_SetResult(interp, buffer, TCL_VOLATILE); |
---|
| 1474 | // return TCL_OK; |
---|
| 1475 | //} |
---|
| 1476 | |
---|
| 1477 | |
---|
| 1478 | /* |
---|
| 1479 | * ------------------------------------------------------------------------ |
---|
| 1480 | * VideoWriteFrame() |
---|
| 1481 | * |
---|
| 1482 | * Used internally to write a single frame out to the output stream. |
---|
| 1483 | * Returns the number of bytes written to the frame, or -1 if an error |
---|
| 1484 | * occurred. |
---|
| 1485 | * ------------------------------------------------------------------------ |
---|
| 1486 | */ |
---|
| 1487 | int |
---|
| 1488 | VideoWriteFrame(vidPtr, framePtr) |
---|
| 1489 | VideoObj *vidPtr; /* video object being updated */ |
---|
| 1490 | AVFrame *framePtr; /* picture frame being written out */ |
---|
| 1491 | { |
---|
| 1492 | int numBytes; |
---|
| 1493 | AVCodecContext *codecCtx; |
---|
| 1494 | AVPacket pkt; |
---|
| 1495 | |
---|
| 1496 | #define OUTBUF_SIZE 500000 |
---|
| 1497 | uint8_t outbuf[OUTBUF_SIZE]; |
---|
| 1498 | |
---|
| 1499 | codecCtx = vidPtr->outVideoStr->codec; |
---|
| 1500 | numBytes = avcodec_encode_video(codecCtx, outbuf, OUTBUF_SIZE, framePtr); |
---|
| 1501 | |
---|
| 1502 | if (numBytes > 0) { |
---|
| 1503 | av_init_packet(&pkt); |
---|
| 1504 | |
---|
| 1505 | if (codecCtx->coded_frame->pts != AV_NOPTS_VALUE) { |
---|
| 1506 | pkt.pts = av_rescale_q(codecCtx->coded_frame->pts, |
---|
| 1507 | codecCtx->time_base, |
---|
| 1508 | vidPtr->outVideoStr->time_base); |
---|
| 1509 | } |
---|
| 1510 | if (codecCtx->coded_frame->key_frame) { |
---|
| 1511 | pkt.flags |= AV_PKT_FLAG_KEY; |
---|
| 1512 | } |
---|
| 1513 | pkt.stream_index = vidPtr->outVideoStr->index; |
---|
| 1514 | pkt.data = outbuf; |
---|
| 1515 | pkt.size = numBytes; |
---|
| 1516 | |
---|
| 1517 | /* write the compressed frame in the media file */ |
---|
| 1518 | if (av_write_frame(vidPtr->outFormatCtx, &pkt) != 0) { |
---|
| 1519 | return -1; |
---|
| 1520 | } |
---|
| 1521 | } |
---|
| 1522 | return numBytes; |
---|
| 1523 | } |
---|
| 1524 | |
---|
| 1525 | /* |
---|
| 1526 | * ------------------------------------------------------------------------ |
---|
| 1527 | * VideoTransform() |
---|
| 1528 | * |
---|
| 1529 | * Implements the body of the "transform" method in the "video" class. |
---|
| 1530 | * Translates one value into another--times into frames, etc. Handles |
---|
| 1531 | * the following syntax: |
---|
| 1532 | * obj transform frames2duration <frames> |
---|
| 1533 | * obj transform duration2frames <duration> |
---|
| 1534 | * ------------------------------------------------------------------------ |
---|
| 1535 | */ |
---|
| 1536 | double |
---|
| 1537 | VideoTransformFrames2Duration(vidPtr, frame) |
---|
| 1538 | VideoObj *vidPtr; |
---|
| 1539 | int frame; |
---|
| 1540 | { |
---|
| 1541 | double duration; |
---|
| 1542 | AVCodecContext *vcodecCtx; |
---|
| 1543 | AVStream *vstreamPtr; |
---|
| 1544 | AVRational hundred; |
---|
| 1545 | int64_t tval; |
---|
| 1546 | |
---|
| 1547 | hundred.num = 100; |
---|
| 1548 | hundred.den = 1; |
---|
| 1549 | |
---|
| 1550 | if (vidPtr == NULL) { |
---|
| 1551 | return -1; |
---|
| 1552 | } |
---|
| 1553 | |
---|
| 1554 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 1555 | // Tcl_AppendResult(interp, "can't compute transformations:", |
---|
| 1556 | // " stream not opened", (char*)NULL); |
---|
| 1557 | // return TCL_ERROR; |
---|
| 1558 | return -1; |
---|
| 1559 | } |
---|
| 1560 | |
---|
| 1561 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
---|
| 1562 | vstreamPtr = vidPtr->pFormatCtx->streams[vidPtr->videoStream]; |
---|
| 1563 | |
---|
| 1564 | tval = av_rescale_q((int64_t)frame, hundred, vstreamPtr->r_frame_rate); |
---|
| 1565 | duration = 0.01*tval; |
---|
| 1566 | |
---|
| 1567 | return duration; |
---|
| 1568 | } |
---|
| 1569 | |
---|
| 1570 | int |
---|
| 1571 | VideoTransformDuration2Frames(vidPtr, duration) |
---|
| 1572 | VideoObj *vidPtr; |
---|
| 1573 | double duration; |
---|
| 1574 | { |
---|
| 1575 | int frames; |
---|
| 1576 | AVCodecContext *vcodecCtx; |
---|
| 1577 | AVStream *vstreamPtr; |
---|
| 1578 | AVRational hundred; |
---|
| 1579 | int64_t tval; |
---|
| 1580 | |
---|
| 1581 | hundred.num = 100; |
---|
| 1582 | hundred.den = 1; |
---|
| 1583 | |
---|
| 1584 | if (vidPtr == NULL) { |
---|
| 1585 | return -1; |
---|
| 1586 | } |
---|
| 1587 | if (vidPtr->pFormatCtx == NULL) { |
---|
| 1588 | // Tcl_AppendResult(interp, "can't compute transformations:", |
---|
| 1589 | // " stream not opened", (char*)NULL); |
---|
| 1590 | // return TCL_ERROR; |
---|
| 1591 | return -1; |
---|
| 1592 | } |
---|
| 1593 | |
---|
| 1594 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
---|
| 1595 | vstreamPtr = vidPtr->pFormatCtx->streams[vidPtr->videoStream]; |
---|
| 1596 | |
---|
| 1597 | tval = (int64_t)(duration*100); |
---|
| 1598 | frames = av_rescale_q(tval, vstreamPtr->r_frame_rate, hundred); |
---|
| 1599 | // check above for overflow |
---|
| 1600 | // tval = av_rescale_q(tval, vstreamPtr->r_frame_rate, hundred); |
---|
| 1601 | // sprintf(buffer, "%lld", tval); |
---|
| 1602 | |
---|
| 1603 | return frames; |
---|
| 1604 | } |
---|
| 1605 | |
---|
| 1606 | /* |
---|
| 1607 | * ------------------------------------------------------------------------ |
---|
| 1608 | * VideoClose() |
---|
| 1609 | * |
---|
| 1610 | * Implements the body of the _ffmpeg_close method in the "video" class. |
---|
| 1611 | * Closes any file opened previously by the open methods for read/write. |
---|
| 1612 | * If nothing is open, this does nothing. |
---|
| 1613 | * ------------------------------------------------------------------------ |
---|
| 1614 | */ |
---|
| 1615 | int |
---|
| 1616 | VideoClose(vidPtr) |
---|
| 1617 | VideoObj *vidPtr; |
---|
| 1618 | { |
---|
| 1619 | AVCodecContext *vcodecCtx; |
---|
| 1620 | int i; |
---|
| 1621 | |
---|
| 1622 | if (vidPtr == NULL) { |
---|
| 1623 | return -1; |
---|
| 1624 | } |
---|
| 1625 | |
---|
| 1626 | if (vidPtr->yuvbuffer) { |
---|
| 1627 | av_free(vidPtr->yuvbuffer); |
---|
| 1628 | vidPtr->yuvbuffer = NULL; |
---|
| 1629 | vidPtr->yuvw = 0; |
---|
| 1630 | vidPtr->yuvh = 0; |
---|
| 1631 | } |
---|
| 1632 | if (vidPtr->pFrameYUV) { |
---|
| 1633 | av_free(vidPtr->pFrameYUV); |
---|
| 1634 | vidPtr->pFrameYUV = NULL; |
---|
| 1635 | } |
---|
| 1636 | |
---|
| 1637 | if (vidPtr->rgbbuffer) { |
---|
| 1638 | av_free(vidPtr->rgbbuffer); |
---|
| 1639 | vidPtr->rgbbuffer = NULL; |
---|
| 1640 | vidPtr->rgbw = 0; |
---|
| 1641 | vidPtr->rgbh = 0; |
---|
| 1642 | } |
---|
| 1643 | if (vidPtr->pFrameRGB) { |
---|
| 1644 | av_free(vidPtr->pFrameRGB); |
---|
| 1645 | vidPtr->pFrameRGB = NULL; |
---|
| 1646 | } |
---|
| 1647 | |
---|
| 1648 | if (vidPtr->scalingCtx) { |
---|
| 1649 | sws_freeContext(vidPtr->scalingCtx); |
---|
| 1650 | vidPtr->scalingCtx = NULL; |
---|
| 1651 | } |
---|
| 1652 | if (vidPtr->pFormatCtx && vidPtr->videoStream >= 0) { |
---|
| 1653 | vcodecCtx = vidPtr->pFormatCtx->streams[vidPtr->videoStream]->codec; |
---|
| 1654 | if (vcodecCtx) { |
---|
| 1655 | avcodec_close(vcodecCtx); |
---|
| 1656 | } |
---|
| 1657 | } |
---|
| 1658 | if (vidPtr->pFormatCtx) { |
---|
| 1659 | #ifdef HAVE_AVFORMAT_CLOSE_INPUT |
---|
| 1660 | avformat_close_input(&vidPtr->pFormatCtx); |
---|
| 1661 | #else |
---|
| 1662 | av_close_input_file(vidPtr->pFormatCtx); |
---|
| 1663 | #endif |
---|
| 1664 | vidPtr->pFormatCtx = NULL; |
---|
| 1665 | } |
---|
| 1666 | |
---|
| 1667 | if (vidPtr->outFormatCtx) { |
---|
| 1668 | while (VideoWriteFrame(vidPtr, NULL) > 0) |
---|
| 1669 | ; /* write out any remaining frames */ |
---|
| 1670 | |
---|
| 1671 | av_write_trailer(vidPtr->outFormatCtx); |
---|
| 1672 | |
---|
| 1673 | for (i=0; i < vidPtr->outFormatCtx->nb_streams; i++) { |
---|
| 1674 | avcodec_close(vidPtr->outFormatCtx->streams[i]->codec); |
---|
| 1675 | av_freep(&vidPtr->outFormatCtx->streams[i]->codec); |
---|
| 1676 | av_freep(&vidPtr->outFormatCtx->streams[i]); |
---|
| 1677 | } |
---|
| 1678 | |
---|
| 1679 | if (vidPtr->outFormatCtx->pb) { |
---|
| 1680 | avio_close(vidPtr->outFormatCtx->pb); |
---|
| 1681 | } |
---|
| 1682 | |
---|
| 1683 | av_free(vidPtr->outFormatCtx); |
---|
| 1684 | vidPtr->outFormatCtx = NULL; |
---|
| 1685 | } |
---|
| 1686 | |
---|
| 1687 | /* reset the mode to null */ |
---|
| 1688 | *vidPtr->mode = '\0'; |
---|
| 1689 | |
---|
| 1690 | return 0; |
---|
| 1691 | } |
---|