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| author | Anton Khirnov <anton@khirnov.net> | 2011-05-24 21:16:47 +0200 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2011-06-02 21:52:15 +0200 |
| commit | 4078ed26312adb9adc1948556464705011b28e67 (patch) | |
| tree | 959a52d02b4aab460a4c55b7f87ba0fb78f5b2fe | |
| parent | c21324eeb6f3175ad2304cb77e990f73a1e810b2 (diff) | |
| download | ffmpeg-4078ed26312adb9adc1948556464705011b28e67.tar.gz | |
vfwcap: add a framerate private option.
| -rw-r--r-- | libavdevice/vfwcap.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/libavdevice/vfwcap.c b/libavdevice/vfwcap.c index d307e11184..c021831945 100644 --- a/libavdevice/vfwcap.c +++ b/libavdevice/vfwcap.c @@ -45,6 +45,7 @@ struct vfw_ctx { unsigned int curbufsize; unsigned int frame_num; char *video_size; /**< A string describing video size, set by a private option. */ + char *framerate; /**< Set by a private option. */ }; static enum PixelFormat vfw_pixfmt(DWORD biCompression, WORD biBitCount) @@ -236,6 +237,7 @@ static int vfw_read_close(AVFormatContext *s) } av_freep(&ctx->video_size); + av_freep(&ctx->framerate); return 0; } @@ -252,6 +254,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap) DWORD biCompression; WORD biBitCount; int ret; + AVRational fps; if (!strcmp(s->filename, "list")) { for (devnum = 0; devnum <= 9; devnum++) { @@ -269,10 +272,10 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap) return AVERROR(EIO); } - if(!ap->time_base.den) { - av_log(s, AV_LOG_ERROR, "A time base must be specified.\n"); - return AVERROR(EIO); - } +#if FF_API_FORMAT_PARAMETERS + if (ap->time_base.num) + fps = (AVRational){ap->time_base.den, ap->time_base.num}; +#endif ctx->hwnd = capCreateCaptureWindow(NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, 0); if(!ctx->hwnd) { @@ -371,7 +374,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap) cparms.fYield = 1; // Spawn a background thread cparms.dwRequestMicroSecPerFrame = - (ap->time_base.num*1000000) / ap->time_base.den; + (fps.den*1000000) / fps.num; cparms.fAbortLeftMouse = 0; cparms.fAbortRightMouse = 0; cparms.fCaptureAudio = 0; @@ -383,7 +386,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap) goto fail_io; codec = st->codec; - codec->time_base = ap->time_base; + codec->time_base = (AVRational){fps.den, fps.num}; codec->codec_type = AVMEDIA_TYPE_VIDEO; codec->width = bi->bmiHeader.biWidth; codec->height = bi->bmiHeader.biHeight; @@ -471,6 +474,7 @@ static int vfw_read_packet(AVFormatContext *s, AVPacket *pkt) #define DEC AV_OPT_FLAG_DECODING_PARAM static const AVOption options[] = { { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, + { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC }, { NULL }, }; |