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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 => media/liboggplay/include/Makefile.in rename : modules/liboggplay/include/oggplay/Makefile.in => media/liboggplay/include/oggplay/Makefile.in rename : modules/liboggplay/include/oggplay/config_win32.h => media/liboggplay/include/oggplay/config_win32.h rename : modules/liboggplay/include/oggplay/oggplay.h => media/liboggplay/include/oggplay/oggplay.h rename : modules/liboggplay/include/oggplay/oggplay_callback_info.h => media/liboggplay/include/oggplay/oggplay_callback_info.h rename : modules/liboggplay/include/oggplay/oggplay_enums.h => media/liboggplay/include/oggplay/oggplay_enums.h rename : modules/liboggplay/include/oggplay/oggplay_query.h => media/liboggplay/include/oggplay/oggplay_query.h rename : modules/liboggplay/include/oggplay/oggplay_reader.h => media/liboggplay/include/oggplay/oggplay_reader.h rename : modules/liboggplay/include/oggplay/oggplay_seek.h => media/liboggplay/include/oggplay/oggplay_seek.h rename : modules/liboggplay/include/oggplay/oggplay_tools.h => media/liboggplay/include/oggplay/oggplay_tools.h rename : modules/liboggplay/src/Makefile.in => media/liboggplay/src/Makefile.in rename : modules/liboggplay/src/liboggplay/Makefile.in => media/liboggplay/src/liboggplay/Makefile.in rename : modules/liboggplay/src/liboggplay/config.h => media/liboggplay/src/liboggplay/config.h rename : modules/liboggplay/src/liboggplay/oggplay.c => media/liboggplay/src/liboggplay/oggplay.c rename : modules/liboggplay/src/liboggplay/oggplay_buffer.c => media/liboggplay/src/liboggplay/oggplay_buffer.c rename : modules/liboggplay/src/liboggplay/oggplay_buffer.h => media/liboggplay/src/liboggplay/oggplay_buffer.h rename : modules/liboggplay/src/liboggplay/oggplay_callback.c => media/liboggplay/src/liboggplay/oggplay_callback.c rename : modules/liboggplay/src/liboggplay/oggplay_callback.h => media/liboggplay/src/liboggplay/oggplay_callback.h rename : modules/liboggplay/src/liboggplay/oggplay_callback_info.c => 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 : modules/liboggplay_audio/sydney_audio_oss.c => media/liboggplay_audio/sydney_audio_oss.c rename : modules/liboggplay_audio/sydney_audio_waveapi.c => media/liboggplay_audio/sydney_audio_waveapi.c rename : modules/liboggplay_audio/update.sh => media/liboggplay_audio/update.sh rename : modules/liboggz/AUTHORS => media/liboggz/AUTHORS rename : modules/liboggz/COPYING => media/liboggz/COPYING rename : modules/liboggz/ChangeLog => media/liboggz/ChangeLog rename : modules/liboggz/Makefile.in => media/liboggz/Makefile.in rename : modules/liboggz/README => media/liboggz/README rename : modules/liboggz/README_MOZILLA => media/liboggz/README_MOZILLA rename : modules/liboggz/include/Makefile.in => media/liboggz/include/Makefile.in rename : modules/liboggz/include/oggz/Makefile.in => media/liboggz/include/oggz/Makefile.in rename : modules/liboggz/include/oggz/config.h => media/liboggz/include/oggz/config.h rename : modules/liboggz/include/oggz/config_win32.h => media/liboggz/include/oggz/config_win32.h rename : modules/liboggz/include/oggz/oggz.h => media/liboggz/include/oggz/oggz.h rename : modules/liboggz/include/oggz/oggz_comments.h => media/liboggz/include/oggz/oggz_comments.h rename : modules/liboggz/include/oggz/oggz_constants.h => media/liboggz/include/oggz/oggz_constants.h rename : modules/liboggz/include/oggz/oggz_deprecated.h => media/liboggz/include/oggz/oggz_deprecated.h rename : modules/liboggz/include/oggz/oggz_io.h => media/liboggz/include/oggz/oggz_io.h rename : modules/liboggz/include/oggz/oggz_off_t.h => media/liboggz/include/oggz/oggz_off_t.h rename : modules/liboggz/include/oggz/oggz_off_t_generated.h => media/liboggz/include/oggz/oggz_off_t_generated.h rename : modules/liboggz/include/oggz/oggz_read.h => media/liboggz/include/oggz/oggz_read.h rename : modules/liboggz/include/oggz/oggz_seek.h => media/liboggz/include/oggz/oggz_seek.h rename : modules/liboggz/include/oggz/oggz_stream.h => media/liboggz/include/oggz/oggz_stream.h rename : modules/liboggz/include/oggz/oggz_table.h => media/liboggz/include/oggz/oggz_table.h rename : modules/liboggz/include/oggz/oggz_write.h => media/liboggz/include/oggz/oggz_write.h rename : modules/liboggz/src/Makefile.in => media/liboggz/src/Makefile.in rename : modules/liboggz/src/liboggz/Makefile.in => media/liboggz/src/liboggz/Makefile.in rename : modules/liboggz/src/liboggz/metric_internal.c => media/liboggz/src/liboggz/metric_internal.c rename : modules/liboggz/src/liboggz/oggz.c => media/liboggz/src/liboggz/oggz.c rename : modules/liboggz/src/liboggz/oggz_auto.c => media/liboggz/src/liboggz/oggz_auto.c rename : modules/liboggz/src/liboggz/oggz_auto.h => media/liboggz/src/liboggz/oggz_auto.h rename : modules/liboggz/src/liboggz/oggz_byteorder.h => media/liboggz/src/liboggz/oggz_byteorder.h rename : modules/liboggz/src/liboggz/oggz_comments.c => media/liboggz/src/liboggz/oggz_comments.c rename : modules/liboggz/src/liboggz/oggz_compat.h => media/liboggz/src/liboggz/oggz_compat.h rename : modules/liboggz/src/liboggz/oggz_dlist.c => media/liboggz/src/liboggz/oggz_dlist.c rename : modules/liboggz/src/liboggz/oggz_dlist.h => media/liboggz/src/liboggz/oggz_dlist.h rename : modules/liboggz/src/liboggz/oggz_io.c => media/liboggz/src/liboggz/oggz_io.c rename : modules/liboggz/src/liboggz/oggz_macros.h => media/liboggz/src/liboggz/oggz_macros.h rename : modules/liboggz/src/liboggz/oggz_private.h => media/liboggz/src/liboggz/oggz_private.h rename : modules/liboggz/src/liboggz/oggz_read.c => media/liboggz/src/liboggz/oggz_read.c rename : modules/liboggz/src/liboggz/oggz_seek.c => media/liboggz/src/liboggz/oggz_seek.c rename : modules/liboggz/src/liboggz/oggz_stream.c => media/liboggz/src/liboggz/oggz_stream.c rename : modules/liboggz/src/liboggz/oggz_stream.h => media/liboggz/src/liboggz/oggz_stream.h rename : modules/liboggz/src/liboggz/oggz_stream_private.h => 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media/libvorbis/include/vorbis/Makefile.in rename : modules/libvorbis/include/vorbis/codec.h => media/libvorbis/include/vorbis/codec.h rename : modules/libvorbis/lib/Makefile.in => media/libvorbis/lib/Makefile.in rename : modules/libvorbis/lib/backends.h => media/libvorbis/lib/backends.h rename : modules/libvorbis/lib/bitrate.h => media/libvorbis/lib/bitrate.h rename : modules/libvorbis/lib/codebook.h => media/libvorbis/lib/codebook.h rename : modules/libvorbis/lib/codec_internal.h => media/libvorbis/lib/codec_internal.h rename : modules/libvorbis/lib/envelope.h => media/libvorbis/lib/envelope.h rename : modules/libvorbis/lib/highlevel.h => media/libvorbis/lib/highlevel.h rename : modules/libvorbis/lib/lookup.h => media/libvorbis/lib/lookup.h rename : modules/libvorbis/lib/lookup_data.h => media/libvorbis/lib/lookup_data.h rename : modules/libvorbis/lib/lpc.h => media/libvorbis/lib/lpc.h rename : modules/libvorbis/lib/lsp.h => media/libvorbis/lib/lsp.h rename : 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
384 lines
12 KiB
C
384 lines
12 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: internal.c 14385 2008-01-09 19:53:18Z giles $
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********************************************************************/
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#include <stdlib.h>
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#include <limits.h>
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#include <string.h>
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#include "../internal.h"
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#include "idct.h"
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/*A map from the index in the zig zag scan to the coefficient number in a
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block.
|
|
All zig zag indices beyond 63 are sent to coefficient 64, so that zero runs
|
|
past the end of a block in bogus streams get mapped to a known location.*/
|
|
const int OC_FZIG_ZAG[128]={
|
|
0, 1, 8,16, 9, 2, 3,10,
|
|
17,24,32,25,18,11, 4, 5,
|
|
12,19,26,33,40,48,41,34,
|
|
27,20,13, 6, 7,14,21,28,
|
|
35,42,49,56,57,50,43,36,
|
|
29,22,15,23,30,37,44,51,
|
|
58,59,52,45,38,31,39,46,
|
|
53,60,61,54,47,55,62,63,
|
|
64,64,64,64,64,64,64,64,
|
|
64,64,64,64,64,64,64,64,
|
|
64,64,64,64,64,64,64,64,
|
|
64,64,64,64,64,64,64,64,
|
|
64,64,64,64,64,64,64,64,
|
|
64,64,64,64,64,64,64,64,
|
|
64,64,64,64,64,64,64,64,
|
|
64,64,64,64,64,64,64,64
|
|
};
|
|
|
|
/*A map from the coefficient number in a block to its index in the zig zag
|
|
scan.*/
|
|
const int OC_IZIG_ZAG[64]={
|
|
0, 1, 5, 6,14,15,27,28,
|
|
2, 4, 7,13,16,26,29,42,
|
|
3, 8,12,17,25,30,41,43,
|
|
9,11,18,24,31,40,44,53,
|
|
10,19,23,32,39,45,52,54,
|
|
20,22,33,38,46,51,55,60,
|
|
21,34,37,47,50,56,59,61,
|
|
35,36,48,49,57,58,62,63
|
|
};
|
|
|
|
/*The predictor frame to use for each macro block mode.*/
|
|
const int OC_FRAME_FOR_MODE[8]={
|
|
/*OC_MODE_INTER_NOMV*/
|
|
OC_FRAME_PREV,
|
|
/*OC_MODE_INTRA*/
|
|
OC_FRAME_SELF,
|
|
/*OC_MODE_INTER_MV*/
|
|
OC_FRAME_PREV,
|
|
/*OC_MODE_INTER_MV_LAST*/
|
|
OC_FRAME_PREV,
|
|
/*OC_MODE_INTER_MV_LAST2*/
|
|
OC_FRAME_PREV,
|
|
/*OC_MODE_GOLDEN*/
|
|
OC_FRAME_GOLD,
|
|
/*OC_MODE_GOLDEN_MV*/
|
|
OC_FRAME_GOLD,
|
|
/*OC_MODE_INTER_MV_FOUR*/
|
|
OC_FRAME_PREV,
|
|
};
|
|
|
|
/*A map from physical macro block ordering to bitstream macro block
|
|
ordering within a super block.*/
|
|
const int OC_MB_MAP[2][2]={{0,3},{1,2}};
|
|
|
|
/*A list of the indices in the oc_mb.map array that can be valid for each of
|
|
the various chroma decimation types.*/
|
|
const int OC_MB_MAP_IDXS[TH_PF_NFORMATS][12]={
|
|
{0,1,2,3,4,8},
|
|
{0,1,2,3,4,5,8,9},
|
|
{0,1,2,3,4,6,8,10},
|
|
{0,1,2,3,4,5,6,7,8,9,10,11}
|
|
};
|
|
|
|
/*The number of indices in the oc_mb.map array that can be valid for each of
|
|
the various chroma decimation types.*/
|
|
const int OC_MB_MAP_NIDXS[TH_PF_NFORMATS]={6,8,8,12};
|
|
|
|
/*The number of extra bits that are coded with each of the DCT tokens.
|
|
Each DCT token has some fixed number of additional bits (possibly 0) stored
|
|
after the token itself, containing, for example, coefficient magnitude,
|
|
sign bits, etc.*/
|
|
const int OC_DCT_TOKEN_EXTRA_BITS[TH_NDCT_TOKENS]={
|
|
0,0,0,2,3,4,12,3,6,
|
|
0,0,0,0,
|
|
1,1,1,1,2,3,4,5,6,10,
|
|
1,1,1,1,1,3,4,
|
|
2,3
|
|
};
|
|
|
|
|
|
|
|
int oc_ilog(unsigned _v){
|
|
int ret;
|
|
for(ret=0;_v;ret++)_v>>=1;
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
/*Determines the number of blocks or coefficients to be skipped for a given
|
|
token value.
|
|
_token: The token value to skip.
|
|
_extra_bits: The extra bits attached to this token.
|
|
Return: A positive value indicates that number of coefficients are to be
|
|
skipped in the current block.
|
|
Otherwise, the negative of the return value indicates that number of
|
|
blocks are to be ended.*/
|
|
typedef int (*oc_token_skip_func)(int _token,int _extra_bits);
|
|
|
|
/*Handles the simple end of block tokens.*/
|
|
static int oc_token_skip_eob(int _token,int _extra_bits){
|
|
static const int NBLOCKS_ADJUST[OC_NDCT_EOB_TOKEN_MAX]={1,2,3,4,8,16,0};
|
|
return -_extra_bits-NBLOCKS_ADJUST[_token];
|
|
}
|
|
|
|
/*The last EOB token has a special case, where an EOB run of size zero ends all
|
|
the remaining blocks in the frame.*/
|
|
static int oc_token_skip_eob6(int _token,int _extra_bits){
|
|
if(!_extra_bits)return -INT_MAX;
|
|
return -_extra_bits;
|
|
}
|
|
|
|
/*Handles the pure zero run tokens.*/
|
|
static int oc_token_skip_zrl(int _token,int _extra_bits){
|
|
return _extra_bits+1;
|
|
}
|
|
|
|
/*Handles a normal coefficient value token.*/
|
|
static int oc_token_skip_val(void){
|
|
return 1;
|
|
}
|
|
|
|
/*Handles a category 1A zero run/coefficient value combo token.*/
|
|
static int oc_token_skip_run_cat1a(int _token){
|
|
return _token-OC_DCT_RUN_CAT1A+2;
|
|
}
|
|
|
|
/*Handles category 1b and 2 zero run/coefficient value combo tokens.*/
|
|
static int oc_token_skip_run(int _token,int _extra_bits){
|
|
static const int NCOEFFS_ADJUST[OC_NDCT_RUN_MAX-OC_DCT_RUN_CAT1B]={
|
|
7,11,2,3
|
|
};
|
|
static const int NCOEFFS_MASK[OC_NDCT_RUN_MAX-OC_DCT_RUN_CAT1B]={
|
|
3,7,0,1
|
|
};
|
|
_token-=OC_DCT_RUN_CAT1B;
|
|
return (_extra_bits&NCOEFFS_MASK[_token])+NCOEFFS_ADJUST[_token];
|
|
}
|
|
|
|
/*A jump table for computing the number of coefficients or blocks to skip for
|
|
a given token value.
|
|
This reduces all the conditional branches, etc., needed to parse these token
|
|
values down to one indirect jump.*/
|
|
static const oc_token_skip_func OC_TOKEN_SKIP_TABLE[TH_NDCT_TOKENS]={
|
|
oc_token_skip_eob,
|
|
oc_token_skip_eob,
|
|
oc_token_skip_eob,
|
|
oc_token_skip_eob,
|
|
oc_token_skip_eob,
|
|
oc_token_skip_eob,
|
|
oc_token_skip_eob6,
|
|
oc_token_skip_zrl,
|
|
oc_token_skip_zrl,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_val,
|
|
(oc_token_skip_func)oc_token_skip_run_cat1a,
|
|
(oc_token_skip_func)oc_token_skip_run_cat1a,
|
|
(oc_token_skip_func)oc_token_skip_run_cat1a,
|
|
(oc_token_skip_func)oc_token_skip_run_cat1a,
|
|
(oc_token_skip_func)oc_token_skip_run_cat1a,
|
|
oc_token_skip_run,
|
|
oc_token_skip_run,
|
|
oc_token_skip_run,
|
|
oc_token_skip_run
|
|
};
|
|
|
|
/*Determines the number of blocks or coefficients to be skipped for a given
|
|
token value.
|
|
_token: The token value to skip.
|
|
_extra_bits: The extra bits attached to this token.
|
|
Return: A positive value indicates that number of coefficients are to be
|
|
skipped in the current block.
|
|
Otherwise, the negative of the return value indicates that number of
|
|
blocks are to be ended.
|
|
0 will never be returned, so that at least one coefficient in one
|
|
block will always be decoded for every token.*/
|
|
int oc_dct_token_skip(int _token,int _extra_bits){
|
|
return (*OC_TOKEN_SKIP_TABLE[_token])(_token,_extra_bits);
|
|
}
|
|
|
|
|
|
/*The function used to fill in the chroma plane motion vectors for a macro
|
|
block when 4 different motion vectors are specified in the luma plane.
|
|
This version is for use with chroma decimated in the X and Y directions.
|
|
_cbmvs: The chroma block-level motion vectors to fill in.
|
|
_lbmvs: The luma block-level motion vectors.*/
|
|
static void oc_set_chroma_mvs00(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]){
|
|
int dx;
|
|
int dy;
|
|
dx=_lbmvs[0][0]+_lbmvs[1][0]+_lbmvs[2][0]+_lbmvs[3][0];
|
|
dy=_lbmvs[0][1]+_lbmvs[1][1]+_lbmvs[2][1]+_lbmvs[3][1];
|
|
_cbmvs[0][0]=(signed char)OC_DIV_ROUND_POW2(dx,2,2);
|
|
_cbmvs[0][1]=(signed char)OC_DIV_ROUND_POW2(dy,2,2);
|
|
}
|
|
|
|
/*The function used to fill in the chroma plane motion vectors for a macro
|
|
block when 4 different motion vectors are specified in the luma plane.
|
|
This version is for use with chroma decimated in the Y direction.
|
|
_cbmvs: The chroma block-level motion vectors to fill in.
|
|
_lbmvs: The luma block-level motion vectors.*/
|
|
static void oc_set_chroma_mvs01(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]){
|
|
int dx;
|
|
int dy;
|
|
dx=_lbmvs[0][0]+_lbmvs[2][0];
|
|
dy=_lbmvs[0][1]+_lbmvs[2][1];
|
|
_cbmvs[0][0]=(signed char)OC_DIV_ROUND_POW2(dx,1,1);
|
|
_cbmvs[0][1]=(signed char)OC_DIV_ROUND_POW2(dy,1,1);
|
|
dx=_lbmvs[1][0]+_lbmvs[3][0];
|
|
dy=_lbmvs[1][1]+_lbmvs[3][1];
|
|
_cbmvs[1][0]=(signed char)OC_DIV_ROUND_POW2(dx,1,1);
|
|
_cbmvs[1][1]=(signed char)OC_DIV_ROUND_POW2(dy,1,1);
|
|
}
|
|
|
|
/*The function used to fill in the chroma plane motion vectors for a macro
|
|
block when 4 different motion vectors are specified in the luma plane.
|
|
This version is for use with chroma decimated in the X direction.
|
|
_cbmvs: The chroma block-level motion vectors to fill in.
|
|
_lbmvs: The luma block-level motion vectors.*/
|
|
static void oc_set_chroma_mvs10(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]){
|
|
int dx;
|
|
int dy;
|
|
dx=_lbmvs[0][0]+_lbmvs[1][0];
|
|
dy=_lbmvs[0][1]+_lbmvs[1][1];
|
|
_cbmvs[0][0]=(signed char)OC_DIV_ROUND_POW2(dx,1,1);
|
|
_cbmvs[0][1]=(signed char)OC_DIV_ROUND_POW2(dy,1,1);
|
|
dx=_lbmvs[2][0]+_lbmvs[3][0];
|
|
dy=_lbmvs[2][1]+_lbmvs[3][1];
|
|
_cbmvs[2][0]=(signed char)OC_DIV_ROUND_POW2(dx,1,1);
|
|
_cbmvs[2][1]=(signed char)OC_DIV_ROUND_POW2(dy,1,1);
|
|
}
|
|
|
|
/*The function used to fill in the chroma plane motion vectors for a macro
|
|
block when 4 different motion vectors are specified in the luma plane.
|
|
This version is for use with no chroma decimation.
|
|
_cbmvs: The chroma block-level motion vectors to fill in.
|
|
_lmbmv: The luma macro-block level motion vector to fill in for use in
|
|
prediction.
|
|
_lbmvs: The luma block-level motion vectors.*/
|
|
static void oc_set_chroma_mvs11(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]){
|
|
memcpy(_cbmvs,_lbmvs,4*sizeof(_lbmvs[0]));
|
|
}
|
|
|
|
/*A table of functions used to fill in the chroma plane motion vectors for a
|
|
macro block when 4 different motion vectors are specified in the luma
|
|
plane.*/
|
|
const oc_set_chroma_mvs_func OC_SET_CHROMA_MVS_TABLE[TH_PF_NFORMATS]={
|
|
(oc_set_chroma_mvs_func)oc_set_chroma_mvs00,
|
|
(oc_set_chroma_mvs_func)oc_set_chroma_mvs01,
|
|
(oc_set_chroma_mvs_func)oc_set_chroma_mvs10,
|
|
(oc_set_chroma_mvs_func)oc_set_chroma_mvs11
|
|
};
|
|
|
|
|
|
|
|
void **oc_malloc_2d(size_t _height,size_t _width,size_t _sz){
|
|
size_t rowsz;
|
|
size_t colsz;
|
|
size_t datsz;
|
|
char *ret;
|
|
colsz=_height*sizeof(void *);
|
|
rowsz=_sz*_width;
|
|
datsz=rowsz*_height;
|
|
/*Alloc array and row pointers.*/
|
|
ret=(char *)_ogg_malloc(datsz+colsz);
|
|
/*Initialize the array.*/
|
|
if(ret!=NULL){
|
|
size_t i;
|
|
void **p;
|
|
char *datptr;
|
|
p=(void **)ret;
|
|
i=_height;
|
|
for(datptr=ret+colsz;i-->0;p++,datptr+=rowsz)*p=(void *)datptr;
|
|
}
|
|
return (void **)ret;
|
|
}
|
|
|
|
void **oc_calloc_2d(size_t _height,size_t _width,size_t _sz){
|
|
size_t colsz;
|
|
size_t rowsz;
|
|
size_t datsz;
|
|
char *ret;
|
|
colsz=_height*sizeof(void *);
|
|
rowsz=_sz*_width;
|
|
datsz=rowsz*_height;
|
|
/*Alloc array and row pointers.*/
|
|
ret=(char *)_ogg_calloc(datsz+colsz,1);
|
|
/*Initialize the array.*/
|
|
if(ret!=NULL){
|
|
size_t i;
|
|
void **p;
|
|
char *datptr;
|
|
p=(void **)ret;
|
|
i=_height;
|
|
for(datptr=ret+colsz;i-->0;p++,datptr+=rowsz)*p=(void *)datptr;
|
|
}
|
|
return (void **)ret;
|
|
}
|
|
|
|
void oc_free_2d(void *_ptr){
|
|
_ogg_free(_ptr);
|
|
}
|
|
|
|
/*Fills in a Y'CbCr buffer with a pointer to the image data in the first
|
|
buffer, but with the opposite vertical orientation.
|
|
_dst: The destination buffer.
|
|
This can be the same as _src.
|
|
_src: The source buffer.*/
|
|
void oc_ycbcr_buffer_flip(th_ycbcr_buffer _dst,
|
|
const th_ycbcr_buffer _src){
|
|
int pli;
|
|
for(pli=0;pli<3;pli++){
|
|
_dst[pli].width=_src[pli].width;
|
|
_dst[pli].height=_src[pli].height;
|
|
_dst[pli].stride=-_src[pli].stride;
|
|
_dst[pli].data=_src[pli].data+(1-_dst[pli].height)*_dst[pli].stride;
|
|
}
|
|
}
|
|
|
|
const char *th_version_string(void){
|
|
return OC_VENDOR_STRING;
|
|
}
|
|
|
|
ogg_uint32_t th_version_number(void){
|
|
return (TH_VERSION_MAJOR<<16)+(TH_VERSION_MINOR<<8)+(TH_VERSION_SUB);
|
|
}
|
|
|
|
/*Determines the packet type.
|
|
Note that this correctly interprets a 0-byte packet as a video data packet.
|
|
Return: 1 for a header packet, 0 for a data packet.*/
|
|
int th_packet_isheader(ogg_packet *_op){
|
|
return _op->bytes>0?_op->packet[0]>>7:0;
|
|
}
|
|
|
|
/*Determines the frame type of a video data packet.
|
|
Note that this correctly interprets a 0-byte packet as a delta frame.
|
|
Return: 1 for a key frame, 0 for a delta frame, and -1 for a header
|
|
packet.*/
|
|
int th_packet_iskeyframe(ogg_packet *_op){
|
|
return _op->bytes<=0?0:_op->packet[0]&0x80?-1:!(_op->packet[0]&0x40);
|
|
}
|