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utvideoenc: Enable support for multiple slices and use them

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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: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Jan Ekström 2014-02-14 12:48:56 +01:00 committed by Derek Buitenhuis
parent 4127e6aeb6
commit 3fbad00714
2 changed files with 34 additions and 4 deletions
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34
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 +201,19 @@ 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.
*/
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 -f avi -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 -f avi -sws_flags +accurate_rnd+bitexact ${OPTS}
FATE_UTVIDEOENC += fate-utvideoenc_rgba_left
fate-utvideoenc_rgba_left: OPTS = -pix_fmt rgba -pred left