mirror of https://github.com/FFmpeg/FFmpeg.git
work_chunks_* and dv_idct_factor_* variables appear only once in the binary instead of 3 times. Saves 3264 bytes in .rodata and 312416 bytes in .bss on x86_64. Originally committed as revision 20246 to svn://svn.ffmpeg.org/ffmpeg/trunkrelease/0.6
Reimar Döffinger
15 years ago
parent
046c400103
commit
c76911bd65
6 changed files with 298 additions and 263 deletions
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/*
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* Constants for DV codec |
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* Copyright (c) 2002 Fabrice Bellard |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file libavcodec/dvdata.c |
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* Constants for DV codec. |
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*/ |
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#include "libavutil/rational.h" |
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#include "avcodec.h" |
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#include "dvdata.h" |
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static DVwork_chunk work_chunks_dv25pal [1*12*27]; |
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static DVwork_chunk work_chunks_dv25pal411[1*12*27]; |
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static DVwork_chunk work_chunks_dv25ntsc [1*10*27]; |
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static DVwork_chunk work_chunks_dv50pal [2*12*27]; |
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static DVwork_chunk work_chunks_dv50ntsc [2*10*27]; |
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static DVwork_chunk work_chunks_dv100palp [2*12*27]; |
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static DVwork_chunk work_chunks_dv100ntscp[2*10*27]; |
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static DVwork_chunk work_chunks_dv100pali [4*12*27]; |
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static DVwork_chunk work_chunks_dv100ntsci[4*10*27]; |
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|
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static uint32_t dv_idct_factor_sd [2*2*22*64]; |
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static uint32_t dv_idct_factor_hd1080[2*4*16*64]; |
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static uint32_t dv_idct_factor_hd720 [2*4*16*64]; |
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|
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static const DVprofile dv_profiles[] = { |
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{ .dsf = 0, |
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.video_stype = 0x0, |
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.frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */ |
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.difseg_size = 10, |
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.n_difchan = 1, |
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.time_base = { 1001, 30000 }, |
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.ltc_divisor = 30, |
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.height = 480, |
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.width = 720, |
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.sar = {{10, 11}, {40, 33}}, |
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.work_chunks = &work_chunks_dv25ntsc[0], |
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.idct_factor = &dv_idct_factor_sd[0], |
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.pix_fmt = PIX_FMT_YUV411P, |
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.bpm = 6, |
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.block_sizes = block_sizes_dv2550, |
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.audio_stride = 90, |
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.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ |
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.audio_shuffle = dv_audio_shuffle525, |
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}, |
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{ .dsf = 1, |
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.video_stype = 0x0, |
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.frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */ |
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.difseg_size = 12, |
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.n_difchan = 1, |
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.time_base = { 1, 25 }, |
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.ltc_divisor = 25, |
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.height = 576, |
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.width = 720, |
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.sar = {{59, 54}, {118, 81}}, |
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.work_chunks = &work_chunks_dv25pal[0], |
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.idct_factor = &dv_idct_factor_sd[0], |
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.pix_fmt = PIX_FMT_YUV420P, |
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.bpm = 6, |
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.block_sizes = block_sizes_dv2550, |
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.audio_stride = 108, |
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.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
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.audio_shuffle = dv_audio_shuffle625, |
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}, |
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{ .dsf = 1, |
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.video_stype = 0x0, |
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.frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */ |
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.difseg_size = 12, |
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.n_difchan = 1, |
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.time_base = { 1, 25 }, |
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.ltc_divisor = 25, |
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.height = 576, |
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.width = 720, |
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.sar = {{59, 54}, {118, 81}}, |
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.work_chunks = &work_chunks_dv25pal411[0], |
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.idct_factor = &dv_idct_factor_sd[0], |
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.pix_fmt = PIX_FMT_YUV411P, |
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.bpm = 6, |
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.block_sizes = block_sizes_dv2550, |
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.audio_stride = 108, |
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.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
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.audio_shuffle = dv_audio_shuffle625, |
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}, |
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{ .dsf = 0, |
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.video_stype = 0x4, |
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.frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */ |
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.difseg_size = 10, /* also known as "DVCPRO50" */ |
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.n_difchan = 2, |
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.time_base = { 1001, 30000 }, |
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.ltc_divisor = 30, |
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.height = 480, |
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.width = 720, |
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.sar = {{10, 11}, {40, 33}}, |
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.work_chunks = &work_chunks_dv50ntsc[0], |
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.idct_factor = &dv_idct_factor_sd[0], |
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.pix_fmt = PIX_FMT_YUV422P, |
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.bpm = 6, |
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.block_sizes = block_sizes_dv2550, |
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.audio_stride = 90, |
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.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ |
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.audio_shuffle = dv_audio_shuffle525, |
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}, |
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{ .dsf = 1, |
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.video_stype = 0x4, |
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.frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */ |
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.difseg_size = 12, /* also known as "DVCPRO50" */ |
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.n_difchan = 2, |
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.time_base = { 1, 25 }, |
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.ltc_divisor = 25, |
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.height = 576, |
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.width = 720, |
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.sar = {{59, 54}, {118, 81}}, |
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.work_chunks = &work_chunks_dv50pal[0], |
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.idct_factor = &dv_idct_factor_sd[0], |
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.pix_fmt = PIX_FMT_YUV422P, |
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.bpm = 6, |
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.block_sizes = block_sizes_dv2550, |
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.audio_stride = 108, |
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.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
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.audio_shuffle = dv_audio_shuffle625, |
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}, |
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{ .dsf = 0, |
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.video_stype = 0x14, |
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.frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */ |
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.difseg_size = 10, /* also known as "DVCPRO HD" */ |
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.n_difchan = 4, |
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.time_base = { 1001, 30000 }, |
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.ltc_divisor = 30, |
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.height = 1080, |
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.width = 1280, |
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.sar = {{1, 1}, {1, 1}}, |
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.work_chunks = &work_chunks_dv100ntsci[0], |
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.idct_factor = &dv_idct_factor_hd1080[0], |
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.pix_fmt = PIX_FMT_YUV422P, |
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.bpm = 8, |
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.block_sizes = block_sizes_dv100, |
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.audio_stride = 90, |
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.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ |
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.audio_shuffle = dv_audio_shuffle525, |
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}, |
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{ .dsf = 1, |
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.video_stype = 0x14, |
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.frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */ |
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.difseg_size = 12, /* also known as "DVCPRO HD" */ |
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.n_difchan = 4, |
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.time_base = { 1, 25 }, |
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.ltc_divisor = 25, |
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.height = 1080, |
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.width = 1440, |
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.sar = {{1, 1}, {1, 1}}, |
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.work_chunks = &work_chunks_dv100pali[0], |
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.idct_factor = &dv_idct_factor_hd1080[0], |
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.pix_fmt = PIX_FMT_YUV422P, |
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.bpm = 8, |
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.block_sizes = block_sizes_dv100, |
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.audio_stride = 108, |
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.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
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.audio_shuffle = dv_audio_shuffle625, |
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}, |
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{ .dsf = 0, |
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.video_stype = 0x18, |
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.frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */ |
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.difseg_size = 10, /* also known as "DVCPRO HD" */ |
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.n_difchan = 2, |
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.time_base = { 1001, 60000 }, |
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.ltc_divisor = 60, |
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.height = 720, |
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.width = 960, |
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.sar = {{1, 1}, {1, 1}}, |
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.work_chunks = &work_chunks_dv100ntscp[0], |
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.idct_factor = &dv_idct_factor_hd720[0], |
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.pix_fmt = PIX_FMT_YUV422P, |
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.bpm = 8, |
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.block_sizes = block_sizes_dv100, |
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.audio_stride = 90, |
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.audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ |
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.audio_shuffle = dv_audio_shuffle525, |
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}, |
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{ .dsf = 1, |
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.video_stype = 0x18, |
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.frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */ |
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.difseg_size = 12, /* also known as "DVCPRO HD" */ |
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.n_difchan = 2, |
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.time_base = { 1, 50 }, |
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.ltc_divisor = 50, |
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.height = 720, |
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.width = 960, |
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.sar = {{1, 1}, {1, 1}}, |
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.work_chunks = &work_chunks_dv100palp[0], |
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.idct_factor = &dv_idct_factor_hd720[0], |
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.pix_fmt = PIX_FMT_YUV422P, |
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.bpm = 8, |
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.block_sizes = block_sizes_dv100, |
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.audio_stride = 90, |
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.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
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.audio_shuffle = dv_audio_shuffle625, |
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}, |
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{ .dsf = 1, |
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.video_stype = 0x1, |
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.frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */ |
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.difseg_size = 12, |
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.n_difchan = 1, |
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.time_base = { 1, 25 }, |
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.ltc_divisor = 25, |
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.height = 576, |
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.width = 720, |
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.sar = {{59, 54}, {118, 81}}, |
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.work_chunks = &work_chunks_dv25pal[0], |
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.idct_factor = &dv_idct_factor_sd[0], |
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.pix_fmt = PIX_FMT_YUV420P, |
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.bpm = 6, |
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.block_sizes = block_sizes_dv2550, |
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.audio_stride = 108, |
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.audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
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.audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
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.audio_shuffle = dv_audio_shuffle625, |
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} |
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}; |
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const DVprofile* ff_dv_frame_profile(const DVprofile *sys, |
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const uint8_t* frame, unsigned buf_size) |
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{ |
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int i; |
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int dsf = (frame[3] & 0x80) >> 7; |
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int stype = frame[80*5 + 48 + 3] & 0x1f; |
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/* 576i50 25Mbps 4:1:1 is a special case */ |
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if (dsf == 1 && stype == 0 && frame[5] & 0x07) { |
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return &dv_profiles[2]; |
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} |
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for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++) |
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if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype) |
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return &dv_profiles[i]; |
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/* check if old sys matches and assumes corrupted input */ |
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if (sys && buf_size == sys->frame_size) |
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return sys; |
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return NULL; |
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} |
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const DVprofile* ff_dv_codec_profile(AVCodecContext* codec) |
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{ |
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int i; |
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for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++) |
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if (codec->height == dv_profiles[i].height && |
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codec->pix_fmt == dv_profiles[i].pix_fmt && |
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codec->width == dv_profiles[i].width) |
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return &dv_profiles[i]; |
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return NULL; |
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} |
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