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Add new -slices option and use it for libvpx and libx264.

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Patch by James Zern, jzern google

Originally committed as revision 25551 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
James Zern 2010-10-22 18:09:14 +00:00 committed by Carl Eugen Hoyos
parent f9b4eef457
commit 2aa72ecccc
4 changed files with 14 additions and 1 deletions
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11
libavcodec/avcodec.h
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@ -31,7 +31,7 @@
#include "libavutil/cpu.h"
#define LIBAVCODEC_VERSION_MAJOR 52
#define LIBAVCODEC_VERSION_MINOR 92
#define LIBAVCODEC_VERSION_MINOR 93
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
@ -2744,6 +2744,15 @@ typedef struct AVCodecContext {
* - decoding: unused
*/
int lpc_passes;
/**
* Number of slices.
* Indicates number of picture subdivisions. Used for parallelized
* decoding.
* - encoding: Set by user
* - decoding: unused
*/
int slices;
} AVCodecContext;
/**

1
libavcodec/libvpxenc.c
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@ -310,6 +310,7 @@ static av_cold int vp8_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
codecctl_int(avctx, VP8E_SET_CPUUSED, cpuused);
codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
//provide dummy value to initialize wrapper, values will be updated each _encode()
vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,

2
libavcodec/libx264.c
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@ -294,6 +294,8 @@ static av_cold int X264_init(AVCodecContext *avctx)
x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
x4->params.i_slice_count = avctx->slices;
if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
x4->params.b_repeat_headers = 0;

1
libavcodec/options.c
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@ -425,6 +425,7 @@ static const AVOption options[]={
{"levinson", NULL, 0, FF_OPT_TYPE_CONST, AV_LPC_TYPE_LEVINSON, INT_MIN, INT_MAX, A|E, "lpc_type"},
{"cholesky", NULL, 0, FF_OPT_TYPE_CONST, AV_LPC_TYPE_CHOLESKY, INT_MIN, INT_MAX, A|E, "lpc_type"},
{"lpc_passes", "number of passes to use for Cholesky factorization during LPC analysis", OFFSET(lpc_passes), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
{"slices", "number of slices, used in parallelized decoding", OFFSET(slices), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|E},
{NULL},
};