/**
* Callback used by libavcodec to get a frame buffer.
*
* It is used for direct rendering as well as to get the right PTS for each
* decoded picture (even in indirect rendering mode).
*/
static int lavc_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, int flags)
{
decoder_t *dec = ctx->opaque;
decoder_sys_t *sys = dec->p_sys;
picture_t *pic;
for (unsigned i = 0; i < AV_NUM_DATA_POINTERS; i++)
{
frame->data[i] = NULL;
frame->linesize[i] = 0;
frame->buf[i] = NULL;
}
if (sys->p_va != NULL)
return lavc_va_GetFrame(ctx, frame, flags);
frame->opaque = NULL;
if (!sys->b_direct_rendering)
return avcodec_default_get_buffer2(ctx, frame, flags);
/* Some codecs set pix_fmt only after the 1st frame has been decoded,
* so we need to check for direct rendering again. */
wait_mt(sys);
pic = lavc_dr_GetFrame(ctx, frame, flags);
if (pic == NULL)
{
if (sys->i_direct_rendering_used != 0)
{
msg_Warn(dec, "disabling direct rendering");
sys->i_direct_rendering_used = 0;
}
post_mt(sys);
return avcodec_default_get_buffer2(ctx, frame, flags);
}
if (sys->i_direct_rendering_used != 1)
{
msg_Dbg(dec, "enabling direct rendering");
sys->i_direct_rendering_used = 1;
}
post_mt(sys);
frame->opaque = pic;
static_assert(PICTURE_PLANE_MAX <= AV_NUM_DATA_POINTERS, "Oops!");
for (unsigned i = 0; i < PICTURE_PLANE_MAX; i++)
{
frame->data[i] = pic->p[i].p_pixels;
frame->linesize[i] = pic->p[i].i_pitch;
}
return 0;
}
/**
* Callback used by libavcodec to get a frame buffer.
*
* It is used for direct rendering as well as to get the right PTS for each
* decoded picture (even in indirect rendering mode).
*/
static int lavc_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, int flags)
{
decoder_t *dec = ctx->opaque;
decoder_sys_t *sys = dec->p_sys;
picture_t *pic;
for (unsigned i = 0; i < AV_NUM_DATA_POINTERS; i++)
{
frame->data[i] = NULL;
frame->linesize[i] = 0;
frame->buf[i] = NULL;
}
frame->opaque = NULL;
wait_mt(sys);
if (sys->p_va != NULL)
{ /* TODO: Move this to get_format(). We are screwed if it fails here. */
if (vlc_va_Setup(sys->p_va, ctx, &dec->fmt_out.video.i_chroma))
{
post_mt(sys);
msg_Err(dec, "hardware acceleration setup failed");
return -1;
}
}
else if (!sys->b_direct_rendering)
{
post_mt(sys);
return avcodec_default_get_buffer2(ctx, frame, flags);
}
/* The semaphore protects updates to fmt_out */
pic = ffmpeg_NewPictBuf(dec, ctx);
post_mt(sys);
if (pic == NULL)
return -1;
if (sys->p_va != NULL)
return lavc_va_GetFrame(ctx, frame, pic);
/* Some codecs set pix_fmt only after the 1st frame has been decoded,
* so we need to check for direct rendering again. */
int ret = lavc_dr_GetFrame(ctx, frame, pic);
if (ret)
ret = avcodec_default_get_buffer2(ctx, frame, flags);
return ret;
}
