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author | Michael Niedermayer <michaelni@gmx.at> | 2012-01-08 01:29:15 +0100 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2012-01-08 03:34:22 +0100 |
commit | 757473831c3e1cc231fb985bcaed622d66fd6b2e (patch) | |
tree | d3c83c1e3726c24b91bf9970b06fd1a83921fff0 /libavcodec/cabac.c | |
parent | a407baba85c2999707868e975c98b5a9de50f46d (diff) | |
parent | badb195d139f15dc189dd3f78930c9cbfce89c24 (diff) | |
download | ffmpeg-757473831c3e1cc231fb985bcaed622d66fd6b2e.tar.gz |
Merge remote-tracking branch 'qatar/master'
* qatar/master: (29 commits)
cabac: Move code only used within the CABAC test program into the test program.
vp56: Drop unnecessary cabac.h #include.
h264-test: Initialize AVCodecContext.av_class.
build: Skip compiling network.h and rtsp.h if networking is not enabled.
cosmetics: drop some pointless parentheses
Disable annoying warning without changing behavior
faq: Solutions for common problems with sample paths when running FATE.
avcodec: attempt to clarify the CODEC_CAP_DELAY documentation
avcodec: fix avcodec_encode_audio() documentation.
FATE: xmv-demux test; exercise the XMV demuxer without decoding the perceptual codecs inside.
vqf: recognize more metadata chunks
FATE test: BMV demuxer and associated video and audio decoders.
FATE: indeo4 video decoder test.
FATE: update xxan-wc4 test to a sample with more code coverage.
Change the recent h264_mp4toannexb bitstream filter test to output to an elementary stream rather than a program stream.
g722enc: validate AVCodecContext.trellis
g722enc: set frame_size, and also handle an odd number of input samples
g722enc: split encoding into separate functions for trellis vs. no trellis
mpegaudiodec: Use clearer pointer math
tta: Fix returned error code at EOF
...
Conflicts:
libavcodec/h264.c
libavcodec/indeo3.c
libavcodec/interplayvideo.c
libavcodec/ivi_common.c
libavcodec/libxvidff.c
libavcodec/mpegvideo.c
libavcodec/ppc/mpegvideo_altivec.c
libavcodec/tta.c
libavcodec/utils.c
libavfilter/vsrc_buffer.c
libavformat/Makefile
tests/fate/indeo.mak
tests/ref/acodec/g722
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/cabac.c')
-rw-r--r-- | libavcodec/cabac.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libavcodec/cabac.c b/libavcodec/cabac.c index c603dafddd..983614581d 100644 --- a/libavcodec/cabac.c +++ b/libavcodec/cabac.c @@ -166,6 +166,31 @@ void ff_init_cabac_states(CABACContext *c){ #include "avcodec.h" #include "cabac.h" +static inline void put_cabac_bit(CABACContext *c, int b){ + put_bits(&c->pb, 1, b); + for(;c->outstanding_count; c->outstanding_count--){ + put_bits(&c->pb, 1, 1-b); + } +} + +static inline void renorm_cabac_encoder(CABACContext *c){ + while(c->range < 0x100){ + //FIXME optimize + if(c->low<0x100){ + put_cabac_bit(c, 0); + }else if(c->low<0x200){ + c->outstanding_count++; + c->low -= 0x100; + }else{ + put_cabac_bit(c, 1); + c->low -= 0x200; + } + + c->range+= c->range; + c->low += c->low; + } +} + static void put_cabac(CABACContext *c, uint8_t * const state, int bit){ int RangeLPS= ff_h264_lps_range[2*(c->range&0xC0) + *state]; |