int lwlibav_get_desired_video_track
(
const char *file_path,
lwlibav_video_decode_handler_t *vdhp,
int threads
)
{
int error = vdhp->stream_index < 0
|| vdhp->frame_count == 0
|| lavf_open_file( &vdhp->format, file_path, &vdhp->lh );
AVCodecContext *ctx = !error ? vdhp->format->streams[ vdhp->stream_index ]->codec : NULL;
if( error || open_decoder( ctx, vdhp->codec_id, threads ) )
{
if( vdhp->index_entries )
av_freep( &vdhp->index_entries );
if( vdhp->frame_list )
lw_freep( &vdhp->frame_list );
if( vdhp->order_converter )
lw_freep( &vdhp->order_converter );
if( vdhp->keyframe_list )
lw_freep( &vdhp->keyframe_list );
if( vdhp->format )
{
lavf_close_file( &vdhp->format );
vdhp->format = NULL;
}
return -1;
}
vdhp->ctx = ctx;
ctx->refcounted_frames = 1;
return 0;
}
int lwlibav_audio_get_desired_track
(
const char *file_path,
lwlibav_audio_decode_handler_t *adhp,
int threads
)
{
AVCodecContext *ctx = NULL;
if( adhp->stream_index < 0
|| adhp->frame_count == 0
|| lavf_open_file( &adhp->format, file_path, &adhp->lh ) < 0
|| find_and_open_decoder( &ctx, adhp->format->streams[ adhp->stream_index ]->codecpar,
adhp->preferred_decoder_names, threads, 0 ) < 0 )
{
av_freep( &adhp->index_entries );
lw_freep( &adhp->frame_list );
if( adhp->format )
lavf_close_file( &adhp->format );
return -1;
}
adhp->ctx = ctx;
return 0;
}
