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avformat/ivfenc: add an AVOutputFormat.init() function

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2020-05-10 10:49:15 -03:00
parent 7a92147f87
commit 8e12f09a25
1 changed files with 11 additions and 2 deletions
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13
libavformat/ivfenc.c
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@ -26,10 +26,9 @@ typedef struct IVFEncContext {
uint64_t last_pts, sum_delta_pts;
} IVFEncContext;
static int ivf_write_header(AVFormatContext *s)
static int ivf_init(AVFormatContext *s)
{
AVCodecParameters *par;
AVIOContext *pb = s->pb;
if (s->nb_streams != 1) {
av_log(s, AV_LOG_ERROR, "Format supports only exactly one video stream\n");
@ -43,6 +42,15 @@ static int ivf_write_header(AVFormatContext *s)
av_log(s, AV_LOG_ERROR, "Currently only VP8, VP9 and AV1 are supported!\n");
return AVERROR(EINVAL);
}
return 0;
}
static int ivf_write_header(AVFormatContext *s)
{
AVCodecParameters *par = s->streams[0]->codecpar;
AVIOContext *pb = s->pb;
avio_write(pb, "DKIF", 4);
avio_wl16(pb, 0); // version
avio_wl16(pb, 32); // header length
@ -119,6 +127,7 @@ AVOutputFormat ff_ivf_muxer = {
.extensions = "ivf",
.audio_codec = AV_CODEC_ID_NONE,
.video_codec = AV_CODEC_ID_VP8,
.init = ivf_init,
.write_header = ivf_write_header,
.write_packet = ivf_write_packet,
.write_trailer = ivf_write_trailer,