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https://git.ffmpeg.org/ffmpeg.git
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286 lines
9.7 KiB
C
286 lines
9.7 KiB
C
/*
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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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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
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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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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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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 = {{8, 9}, {32, 27}},
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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 = {{16, 15}, {64, 45}},
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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 = {{16, 15}, {64, 45}},
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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 = {{8, 9}, {32, 27}},
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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 = {{16, 15}, {64, 45}},
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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}, {3, 2}},
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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}, {4, 3}},
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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}, {4, 3}},
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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}, {4, 3}},
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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 = {{16, 15}, {64, 45}},
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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[4] & 0x07 /* the APT field */) {
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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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