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--HG-- rename : modules/libfishsound/AUTHORS => media/libfishsound/AUTHORS rename : modules/libfishsound/COPYING => media/libfishsound/COPYING rename : modules/libfishsound/ChangeLog => media/libfishsound/ChangeLog rename : modules/libfishsound/Makefile.in => media/libfishsound/Makefile.in rename : modules/libfishsound/README => media/libfishsound/README rename : modules/libfishsound/README_MOZILLA => media/libfishsound/README_MOZILLA rename : modules/libfishsound/include/Makefile.in => media/libfishsound/include/Makefile.in rename : modules/libfishsound/include/fishsound/Makefile.in => media/libfishsound/include/fishsound/Makefile.in rename : modules/libfishsound/include/fishsound/comments.h => media/libfishsound/include/fishsound/comments.h rename : modules/libfishsound/include/fishsound/config.h => media/libfishsound/include/fishsound/config.h rename : modules/libfishsound/include/fishsound/constants.h => media/libfishsound/include/fishsound/constants.h rename : modules/libfishsound/include/fishsound/decode.h => media/libfishsound/include/fishsound/decode.h rename : modules/libfishsound/include/fishsound/deprecated.h => media/libfishsound/include/fishsound/deprecated.h rename : modules/libfishsound/include/fishsound/encode.h => media/libfishsound/include/fishsound/encode.h rename : modules/libfishsound/include/fishsound/fishsound.h => media/libfishsound/include/fishsound/fishsound.h rename : modules/libfishsound/src/Makefile.in => media/libfishsound/src/Makefile.in rename : modules/libfishsound/src/libfishsound/Makefile.in => media/libfishsound/src/libfishsound/Makefile.in rename : modules/libfishsound/src/libfishsound/config.h => media/libfishsound/src/libfishsound/config.h rename : modules/libfishsound/src/libfishsound/convert.h => media/libfishsound/src/libfishsound/convert.h rename : modules/libfishsound/src/libfishsound/convert_c.h => media/libfishsound/src/libfishsound/convert_c.h rename : modules/libfishsound/src/libfishsound/convert_oil.h => media/libfishsound/src/libfishsound/convert_oil.h rename : modules/libfishsound/src/libfishsound/fishsound.c => media/libfishsound/src/libfishsound/fishsound.c rename : modules/libfishsound/src/libfishsound/fishsound_comments.c => media/libfishsound/src/libfishsound/fishsound_comments.c rename : modules/libfishsound/src/libfishsound/fishsound_decode.c => media/libfishsound/src/libfishsound/fishsound_decode.c rename : modules/libfishsound/src/libfishsound/fishsound_encode.c => media/libfishsound/src/libfishsound/fishsound_encode.c rename : modules/libfishsound/src/libfishsound/fishsound_flac.c => media/libfishsound/src/libfishsound/fishsound_flac.c rename : modules/libfishsound/src/libfishsound/fishsound_speex.c => media/libfishsound/src/libfishsound/fishsound_speex.c rename : modules/libfishsound/src/libfishsound/fishsound_vorbis.c => media/libfishsound/src/libfishsound/fishsound_vorbis.c rename : modules/libfishsound/src/libfishsound/fs_compat.h => media/libfishsound/src/libfishsound/fs_compat.h rename : modules/libfishsound/src/libfishsound/fs_vector.c => media/libfishsound/src/libfishsound/fs_vector.c rename : modules/libfishsound/src/libfishsound/fs_vector.h => media/libfishsound/src/libfishsound/fs_vector.h rename : modules/libfishsound/src/libfishsound/private.h => media/libfishsound/src/libfishsound/private.h rename : modules/libfishsound/update.sh => media/libfishsound/update.sh rename : modules/libogg/AUTHORS => media/libogg/AUTHORS rename : modules/libogg/CHANGES => media/libogg/CHANGES rename : modules/libogg/COPYING => media/libogg/COPYING rename : modules/libogg/Makefile.in => media/libogg/Makefile.in rename : modules/libogg/README => media/libogg/README rename : modules/libogg/README_MOZILLA => media/libogg/README_MOZILLA rename : modules/libogg/include/Makefile.in => media/libogg/include/Makefile.in rename : modules/libogg/include/ogg/Makefile.in => media/libogg/include/ogg/Makefile.in rename : modules/libogg/include/ogg/config_types.h => media/libogg/include/ogg/config_types.h rename : modules/libogg/include/ogg/ogg.h => media/libogg/include/ogg/ogg.h rename : modules/libogg/include/ogg/os_types.h => media/libogg/include/ogg/os_types.h rename : modules/libogg/src/Makefile.in => media/libogg/src/Makefile.in rename : modules/libogg/src/bitwise.c => media/libogg/src/bitwise.c rename : modules/libogg/src/framing.c => media/libogg/src/framing.c rename : modules/libogg/src/ogg_bitwise.c => media/libogg/src/ogg_bitwise.c rename : modules/libogg/src/ogg_framing.c => media/libogg/src/ogg_framing.c rename : modules/libogg/update.sh => media/libogg/update.sh rename : modules/liboggplay/Makefile.in => media/liboggplay/Makefile.in rename : modules/liboggplay/README => media/liboggplay/README rename : modules/liboggplay/README_MOZILLA => media/liboggplay/README_MOZILLA rename : modules/liboggplay/include/Makefile.in => 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media/liboggplay/src/liboggplay/oggplay_callback_info.c rename : modules/liboggplay/src/liboggplay/oggplay_data.c => media/liboggplay/src/liboggplay/oggplay_data.c rename : modules/liboggplay/src/liboggplay/oggplay_data.h => media/liboggplay/src/liboggplay/oggplay_data.h rename : modules/liboggplay/src/liboggplay/oggplay_file_reader.c => media/liboggplay/src/liboggplay/oggplay_file_reader.c rename : modules/liboggplay/src/liboggplay/oggplay_file_reader.h => media/liboggplay/src/liboggplay/oggplay_file_reader.h rename : modules/liboggplay/src/liboggplay/oggplay_private.h => media/liboggplay/src/liboggplay/oggplay_private.h rename : modules/liboggplay/src/liboggplay/oggplay_query.c => media/liboggplay/src/liboggplay/oggplay_query.c rename : modules/liboggplay/src/liboggplay/oggplay_seek.c => media/liboggplay/src/liboggplay/oggplay_seek.c rename : modules/liboggplay/src/liboggplay/oggplay_tcp_reader.c => media/liboggplay/src/liboggplay/oggplay_tcp_reader.c rename : modules/liboggplay/src/liboggplay/oggplay_tcp_reader.h => media/liboggplay/src/liboggplay/oggplay_tcp_reader.h rename : modules/liboggplay/src/liboggplay/oggplay_tools.c => media/liboggplay/src/liboggplay/oggplay_tools.c rename : modules/liboggplay/src/liboggplay/oggplay_yuv2rgb.c => media/liboggplay/src/liboggplay/oggplay_yuv2rgb.c rename : modules/liboggplay/src/liboggplay/std_semaphore.h => media/liboggplay/src/liboggplay/std_semaphore.h rename : modules/liboggplay/update.sh => media/liboggplay/update.sh rename : modules/liboggplay_audio/Makefile.in => media/liboggplay_audio/Makefile.in rename : modules/liboggplay_audio/README_MOZILLA => media/liboggplay_audio/README_MOZILLA rename : modules/liboggplay_audio/sydney_audio.h => media/liboggplay_audio/sydney_audio.h rename : modules/liboggplay_audio/sydney_audio_alsa.c => media/liboggplay_audio/sydney_audio_alsa.c rename : modules/liboggplay_audio/sydney_audio_mac.c => media/liboggplay_audio/sydney_audio_mac.c rename : 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modules/libvorbis/lib/masking.h => media/libvorbis/lib/masking.h rename : modules/libvorbis/lib/mdct.h => media/libvorbis/lib/mdct.h rename : modules/libvorbis/lib/misc.h => media/libvorbis/lib/misc.h rename : modules/libvorbis/lib/os.h => media/libvorbis/lib/os.h rename : modules/libvorbis/lib/psy.h => media/libvorbis/lib/psy.h rename : modules/libvorbis/lib/registry.h => media/libvorbis/lib/registry.h rename : modules/libvorbis/lib/scales.h => media/libvorbis/lib/scales.h rename : modules/libvorbis/lib/smallft.h => media/libvorbis/lib/smallft.h rename : modules/libvorbis/lib/vorbis_analysis.c => media/libvorbis/lib/vorbis_analysis.c rename : modules/libvorbis/lib/vorbis_bitrate.c => media/libvorbis/lib/vorbis_bitrate.c rename : modules/libvorbis/lib/vorbis_block.c => media/libvorbis/lib/vorbis_block.c rename : modules/libvorbis/lib/vorbis_codebook.c => media/libvorbis/lib/vorbis_codebook.c rename : modules/libvorbis/lib/vorbis_envelope.c => media/libvorbis/lib/vorbis_envelope.c rename : modules/libvorbis/lib/vorbis_floor0.c => media/libvorbis/lib/vorbis_floor0.c rename : modules/libvorbis/lib/vorbis_floor1.c => media/libvorbis/lib/vorbis_floor1.c rename : modules/libvorbis/lib/vorbis_info.c => media/libvorbis/lib/vorbis_info.c rename : modules/libvorbis/lib/vorbis_lookup.c => media/libvorbis/lib/vorbis_lookup.c rename : modules/libvorbis/lib/vorbis_lpc.c => media/libvorbis/lib/vorbis_lpc.c rename : modules/libvorbis/lib/vorbis_lsp.c => media/libvorbis/lib/vorbis_lsp.c rename : modules/libvorbis/lib/vorbis_mapping0.c => media/libvorbis/lib/vorbis_mapping0.c rename : modules/libvorbis/lib/vorbis_mdct.c => media/libvorbis/lib/vorbis_mdct.c rename : modules/libvorbis/lib/vorbis_psy.c => media/libvorbis/lib/vorbis_psy.c rename : modules/libvorbis/lib/vorbis_registry.c => media/libvorbis/lib/vorbis_registry.c rename : modules/libvorbis/lib/vorbis_res0.c => media/libvorbis/lib/vorbis_res0.c rename : modules/libvorbis/lib/vorbis_sharedbook.c => media/libvorbis/lib/vorbis_sharedbook.c rename : modules/libvorbis/lib/vorbis_smallft.c => media/libvorbis/lib/vorbis_smallft.c rename : modules/libvorbis/lib/vorbis_synthesis.c => media/libvorbis/lib/vorbis_synthesis.c rename : modules/libvorbis/lib/vorbis_window.c => media/libvorbis/lib/vorbis_window.c rename : modules/libvorbis/lib/window.h => media/libvorbis/lib/window.h rename : modules/libvorbis/todo.txt => media/libvorbis/todo.txt rename : modules/libvorbis/update.sh => media/libvorbis/update.sh
153 lines
5.1 KiB
C
153 lines
5.1 KiB
C
/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2007 *
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* by the Xiph.Org Foundation http://www.xiph.org/ *
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* *
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********************************************************************
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function:
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last mod: $Id: quant.c 14375 2008-01-06 05:37:33Z tterribe $
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********************************************************************/
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#include <stdlib.h>
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#include <string.h>
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#include <ogg/ogg.h>
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#include "quant.h"
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#include "decint.h"
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unsigned OC_DC_QUANT_MIN[2]={4<<2,8<<2};
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unsigned OC_AC_QUANT_MIN[2]={2<<2,4<<2};
|
|
|
|
/*Initializes the dequantization tables from a set of quantizer info.
|
|
Currently the dequantizer (and elsewhere enquantizer) tables are expected to
|
|
be initialized as pointing to the storage reserved for them in the
|
|
oc_theora_state (resp. oc_enc_ctx) structure.
|
|
If some tables are duplicates of others, the pointers will be adjusted to
|
|
point to a single copy of the tables, but the storage for them will not be
|
|
freed.
|
|
If you're concerned about the memory footprint, the obvious thing to do is
|
|
to move the storage out of its fixed place in the structures and allocate
|
|
it on demand.
|
|
However, a much, much better option is to only store the quantization
|
|
matrices being used for the current frame, and to recalculate these as the
|
|
qi values change between frames (this is what VP3 did).*/
|
|
void oc_dequant_tables_init(oc_quant_table *_dequant[2][3],
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int _pp_dc_scale[64],const th_quant_info *_qinfo){
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|
int qti; /* coding mode: intra or inter */
|
|
int pli; /* Y U V */
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|
for(qti=0;qti<2;qti++){
|
|
for(pli=0;pli<3;pli++){
|
|
oc_quant_tables stage;
|
|
|
|
int qi; /* quality index */
|
|
int qri; /* range iterator */
|
|
|
|
for(qi=0,qri=0; qri<=_qinfo->qi_ranges[qti][pli].nranges; qri++){
|
|
th_quant_base base;
|
|
|
|
ogg_uint32_t q;
|
|
int qi_start;
|
|
int qi_end;
|
|
int ci;
|
|
memcpy(base,_qinfo->qi_ranges[qti][pli].base_matrices[qri],
|
|
sizeof(base));
|
|
|
|
qi_start=qi;
|
|
if(qri==_qinfo->qi_ranges[qti][pli].nranges)
|
|
qi_end=qi+1;
|
|
else
|
|
qi_end=qi+_qinfo->qi_ranges[qti][pli].sizes[qri];
|
|
|
|
/* Iterate over quality indicies in this range */
|
|
for(;;){
|
|
|
|
/*In the original VP3.2 code, the rounding offset and the size of the
|
|
dead zone around 0 were controlled by a "sharpness" parameter.
|
|
The size of our dead zone is now controlled by the per-coefficient
|
|
quality thresholds returned by our HVS module.
|
|
We round down from a more accurate value when the quality of the
|
|
reconstruction does not fall below our threshold and it saves bits.
|
|
Hence, all of that VP3.2 code is gone from here, and the remaining
|
|
floating point code has been implemented as equivalent integer code
|
|
with exact precision.*/
|
|
|
|
/* for postprocess, not dequant */
|
|
if(_pp_dc_scale!=NULL)
|
|
_pp_dc_scale[qi]=(int)((ogg_uint32_t)_qinfo->dc_scale[qi]*base[0]/160);
|
|
|
|
/*Scale DC the coefficient from the proper table.*/
|
|
q=((ogg_uint32_t)_qinfo->dc_scale[qi]*base[0]/100)<<2;
|
|
q=OC_CLAMPI(OC_DC_QUANT_MIN[qti],q,OC_QUANT_MAX);
|
|
stage[qi][0]=(ogg_uint16_t)q;
|
|
|
|
/*Now scale AC coefficients from the proper table.*/
|
|
for(ci=1;ci<64;ci++){
|
|
q=((ogg_uint32_t)_qinfo->ac_scale[qi]*base[ci]/100)<<2;
|
|
q=OC_CLAMPI(OC_AC_QUANT_MIN[qti],q,OC_QUANT_MAX);
|
|
stage[qi][ci]=(ogg_uint16_t)q;
|
|
}
|
|
|
|
if(++qi>=qi_end)break;
|
|
|
|
/*Interpolate the next base matrix.*/
|
|
for(ci=0;ci<64;ci++){
|
|
base[ci]=(unsigned char)
|
|
((2*((qi_end-qi)*_qinfo->qi_ranges[qti][pli].base_matrices[qri][ci]+
|
|
(qi-qi_start)*_qinfo->qi_ranges[qti][pli].base_matrices[qri+1][ci])
|
|
+_qinfo->qi_ranges[qti][pli].sizes[qri])/
|
|
(2*_qinfo->qi_ranges[qti][pli].sizes[qri]));
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Staging matricies complete; commit to memory only if this
|
|
isn't a duplicate of a preceeding plane. This simple check
|
|
helps us improve cache coherency later.*/
|
|
{
|
|
int dupe = 0;
|
|
int i,j;
|
|
for(i=0;i<=qti;i++){
|
|
for(j=0;j<(i<qti?3:pli);j++){
|
|
if(!memcmp(stage,_dequant[i][j],sizeof(stage))){
|
|
dupe = 1;
|
|
break;
|
|
}
|
|
}
|
|
if(dupe)break;
|
|
}
|
|
if(dupe){
|
|
_dequant[qti][pli]=_dequant[i][j];
|
|
}else{
|
|
memcpy(_dequant[qti][pli],stage,sizeof(stage));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef _TH_DEBUG_
|
|
int i, j, k, l;
|
|
/* dump the calculated quantizer tables */
|
|
for(i=0;i<2;i++){
|
|
for(j=0;j<3;j++){
|
|
for(k=0;k<64;k++){
|
|
TH_DEBUG("quantizer table [%s][%s][Q%d] = {",
|
|
(i==0?"intra":"inter"),(j==0?"Y":(j==1?"U":"V")),k);
|
|
for(l=0;l<64;l++){
|
|
if((l&7)==0)
|
|
TH_DEBUG("\n ");
|
|
TH_DEBUG("%4d ",_dequant[i][j][k][l]);
|
|
}
|
|
TH_DEBUG("}\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
}
|