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Add intra refresh and crf-max support to the libavcodec libx264 wrapper.

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Minor version bump.

Originally committed as revision 23038 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Jason Garrett-Glaser 2010-05-06 22:38:18 +00:00
parent 46174079c9
commit e8c7fca90c
4 changed files with 17 additions and 3 deletions
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12
libavcodec/avcodec.h
View file

@ -30,7 +30,7 @@
#include "libavutil/avutil.h"
#define LIBAVCODEC_VERSION_MAJOR 52
#define LIBAVCODEC_VERSION_MINOR 66
#define LIBAVCODEC_VERSION_MINOR 67
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
@ -597,6 +597,7 @@ typedef struct RcOverride{
#define CODEC_FLAG2_MBTREE 0x00040000 ///< Use macroblock tree ratecontrol (x264 only)
#define CODEC_FLAG2_PSY 0x00080000 ///< Use psycho visual optimizations.
#define CODEC_FLAG2_SSIM 0x00100000 ///< Compute SSIM during encoding, error[] values are undefined.
#define CODEC_FLAG2_INTRA_REFRESH 0x00200000 ///< Use periodic insertion of intra blocks instead of keyframes.
/* Unsupported options :
* Syntax Arithmetic coding (SAC)
@ -2646,6 +2647,15 @@ typedef struct AVCodecContext {
* - decoding: unused
*/
int rc_lookahead;
/**
* Constant rate factor maximum
* With CRF encoding mode and VBV restrictions enabled, prevents quality from being worse
* than crf_max, even if doing so would violate VBV restrictions.
* - encoding: Set by user.
* - decoding: unused
*/
float crf_max;
} AVCodecContext;
/**

2
libavcodec/libx264.c
View file

@ -156,6 +156,7 @@ static av_cold int X264_init(AVCodecContext *avctx)
x4->params.p_log_private = avctx;
x4->params.i_keyint_max = avctx->gop_size;
x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;
x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
@ -166,6 +167,7 @@ static av_cold int X264_init(AVCodecContext *avctx)
if (avctx->crf) {
x4->params.rc.i_rc_method = X264_RC_CRF;
x4->params.rc.f_rf_constant = avctx->crf;
x4->params.rc.f_rf_constant_max = avctx->crf_max;
} else if (avctx->cqp > -1) {
x4->params.rc.i_rc_method = X264_RC_CQP;
x4->params.rc.i_qp_constant = avctx->cqp;

2
libavcodec/options.c
View file

@ -411,6 +411,8 @@ static const AVOption options[]={
{"aq_strength", "specify aq strength", OFFSET(aq_strength), FF_OPT_TYPE_FLOAT, 1.0, 0, FLT_MAX, V|E},
{"rc_lookahead", "specify number of frames to look ahead for frametype", OFFSET(rc_lookahead), FF_OPT_TYPE_INT, 40, 0, INT_MAX, V|E},
{"ssim", "ssim will be calculated during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_SSIM, INT_MIN, INT_MAX, V|E, "flags2"},
{"intra_refresh", "use periodic insertion of intra blocks instead of keyframes", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_REFRESH, INT_MIN, INT_MAX, V|E, "flags2"},
{"crf_max", "in crf mode, prevents vbv from lowering quality beyond this point", OFFSET(crf_max), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 51, V|E},
{NULL},
};