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avformat/ttaenc: add tta_init() 

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-11-20 17:43:23 -03:00
parent e97667c82f
commit fa4121507c
1 changed files with 22 additions and 10 deletions
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32
libavformat/ttaenc.c
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@ -35,16 +35,17 @@ typedef struct TTAMuxContext {
int last_frame;
} TTAMuxContext;
static int tta_write_header(AVFormatContext *s)
static int tta_init(AVFormatContext *s)
{
TTAMuxContext *tta = s->priv_data;
AVCodecParameters *par = s->streams[0]->codecpar;
int ret;
AVCodecParameters *par;
if (s->nb_streams != 1) {
av_log(s, AV_LOG_ERROR, "Only one stream is supported\n");
return AVERROR(EINVAL);
}
par = s->streams[0]->codecpar;
if (par->codec_id != AV_CODEC_ID_TTA) {
av_log(s, AV_LOG_ERROR, "Unsupported codec\n");
return AVERROR(EINVAL);
@ -54,6 +55,23 @@ static int tta_write_header(AVFormatContext *s)
return AVERROR_INVALIDDATA;
}
/* Prevent overflow */
if (par->sample_rate > 0x7FFFFFu) {
av_log(s, AV_LOG_ERROR, "Sample rate too large\n");
return AVERROR(EINVAL);
}
tta->frame_size = par->sample_rate * 256 / 245;
avpriv_set_pts_info(s->streams[0], 64, 1, par->sample_rate);
return 0;
}
static int tta_write_header(AVFormatContext *s)
{
TTAMuxContext *tta = s->priv_data;
AVCodecParameters *par = s->streams[0]->codecpar;
int ret;
if ((ret = avio_open_dyn_buf(&tta->seek_table)) < 0)
return ret;
@ -66,13 +84,6 @@ static int tta_write_header(AVFormatContext *s)
avio_wl16(s->pb, par->channels);
avio_wl16(s->pb, par->bits_per_raw_sample);
avio_wl32(s->pb, par->sample_rate);
/* Prevent overflow */
if (par->sample_rate > 0x7FFFFFu) {
av_log(s, AV_LOG_ERROR, "Sample rate too large\n");
return AVERROR(EINVAL);
}
tta->frame_size = par->sample_rate * 256 / 245;
avpriv_set_pts_info(s->streams[0], 64, 1, par->sample_rate);
return 0;
}
@ -167,6 +178,7 @@ AVOutputFormat ff_tta_muxer = {
.priv_data_size = sizeof(TTAMuxContext),
.audio_codec = AV_CODEC_ID_TTA,
.video_codec = AV_CODEC_ID_NONE,
.init = tta_init,
.write_header = tta_write_header,
.write_packet = tta_write_packet,
.write_trailer = tta_write_trailer,