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utvideoenc: Enable support for multiple slices and use them 

The official Ut Video decoder only threads with slices, thus until
now any files encoded by the libavcodec encoder have only been
decodable with a single thread. The default slice count is now
set to subsampled_height / 120.

Also sets slices to 1 for the Ut Video encoder tests to keep them
green.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Jan Ekström 2014-02-14 14:48:19 +02:00 committed by Michael Niedermayer
parent 92225877ce
commit efec857c9f
2 changed files with 35 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
libavcodec/utvideoenc.c
View File

@ -58,7 +58,7 @@ static av_cold int utvideo_encode_close(AVCodecContext *avctx)
static av_cold int utvideo_encode_init(AVCodecContext *avctx)
{
UtvideoContext *c = avctx->priv_data;
int i;
int i, subsampled_height;
uint32_t original_format;
c->avctx = avctx;
@ -132,6 +132,26 @@ static av_cold int utvideo_encode_init(AVCodecContext *avctx)
return AVERROR_OPTION_NOT_FOUND;
}
/*
* Check the asked slice count for obviously invalid
* values (> 256 or negative).
*/
if (avctx->slices > 256 || avctx->slices < 0) {
av_log(avctx, AV_LOG_ERROR,
"Slice count %d is not supported in Ut Video (theoretical range is 0-256).\n",
avctx->slices);
return AVERROR(EINVAL);
}
/* Check that the slice count is not larger than the subsampled height */
subsampled_height = avctx->height >> av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_h;
if (avctx->slices > subsampled_height) {
av_log(avctx, AV_LOG_ERROR,
"Slice count %d is larger than the subsampling-applied height %d.\n",
avctx->slices, subsampled_height);
return AVERROR(EINVAL);
}
avctx->coded_frame = av_frame_alloc();
if (!avctx->coded_frame) {
@ -181,9 +201,20 @@ static av_cold int utvideo_encode_init(AVCodecContext *avctx)
/*
* Set how many slices are going to be used.
* Set one slice for now.
* By default uses multiple slices depending on the subsampled height.
* This enables multithreading in the official decoder.
*/
c->slices = 1;
if (!avctx->slices) {
c->slices = subsampled_height / 120;
if (!c->slices) {
c->slices = 1;
} else if (c->slices > 256) {
c->slices = 256;
}
} else {
c->slices = avctx->slices;
}
/* Set compression mode */
c->compression = COMP_HUFF;

2
tests/fate/utvideo.mak
View File

@ -28,7 +28,7 @@ fate-utvideo_yuv422_median: CMD = framecrc -i $(TARGET_SAMPLES)/utvideo/utvideo_
FATE_SAMPLES_AVCONV-$(call DEMDEC, AVI, UTVIDEO) += $(FATE_UTVIDEO)
fate-utvideo: $(FATE_UTVIDEO)
fate-utvideoenc%: CMD = framemd5 -f image2 -vcodec pgmyuv -i $(TARGET_PATH)/tests/vsynth1/%02d.pgm -vcodec utvideo -sws_flags +accurate_rnd+bitexact ${OPTS}
fate-utvideoenc%: CMD = framemd5 -f image2 -vcodec pgmyuv -i $(TARGET_PATH)/tests/vsynth1/%02d.pgm -vcodec utvideo -slices 1 -sws_flags +accurate_rnd+bitexact ${OPTS}
FATE_UTVIDEOENC += fate-utvideoenc_rgba_left
fate-utvideoenc_rgba_left: OPTS = -pix_fmt rgba -pred left