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298 lines
10 KiB
298 lines
10 KiB
/* |
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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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#include <stdint.h> |
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#include "libavutil/common.h" |
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#include "libavutil/log.h" |
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#include "libavutil/pixdesc.h" |
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#include "avcodec.h" |
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#include "dv_profile.h" |
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static const uint8_t dv_audio_shuffle525[10][9] = { |
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{ 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */ |
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{ 6, 36, 66, 26, 56, 86, 16, 46, 76 }, |
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{ 12, 42, 72, 2, 32, 62, 22, 52, 82 }, |
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{ 18, 48, 78, 8, 38, 68, 28, 58, 88 }, |
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{ 24, 54, 84, 14, 44, 74, 4, 34, 64 }, |
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{ 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */ |
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{ 7, 37, 67, 27, 57, 87, 17, 47, 77 }, |
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{ 13, 43, 73, 3, 33, 63, 23, 53, 83 }, |
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{ 19, 49, 79, 9, 39, 69, 29, 59, 89 }, |
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{ 25, 55, 85, 15, 45, 75, 5, 35, 65 }, |
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}; |
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static const uint8_t dv_audio_shuffle625[12][9] = { |
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{ 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */ |
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{ 6, 42, 78, 32, 68, 104, 22, 58, 94}, |
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{ 12, 48, 84, 2, 38, 74, 28, 64, 100}, |
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{ 18, 54, 90, 8, 44, 80, 34, 70, 106}, |
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{ 24, 60, 96, 14, 50, 86, 4, 40, 76}, |
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{ 30, 66, 102, 20, 56, 92, 10, 46, 82}, |
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{ 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */ |
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{ 7, 43, 79, 33, 69, 105, 23, 59, 95}, |
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{ 13, 49, 85, 3, 39, 75, 29, 65, 101}, |
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{ 19, 55, 91, 9, 45, 81, 35, 71, 107}, |
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{ 25, 61, 97, 15, 51, 87, 5, 41, 77}, |
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{ 31, 67, 103, 21, 57, 93, 11, 47, 83}, |
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}; |
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/* macroblock bit budgets */ |
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static const uint8_t block_sizes_dv2550[8] = { |
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112, 112, 112, 112, 80, 80, 0, 0, |
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}; |
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static const uint8_t block_sizes_dv100[8] = { |
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80, 80, 80, 80, 80, 80, 64, 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 = {{8, 9}, {32, 27}}, |
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.pix_fmt = AV_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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.pix_fmt = AV_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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.pix_fmt = AV_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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.pix_fmt = AV_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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.pix_fmt = AV_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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.pix_fmt = AV_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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.pix_fmt = AV_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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.pix_fmt = AV_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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.pix_fmt = AV_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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.pix_fmt = AV_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* avpriv_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, dsf, stype; |
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if (buf_size < 80 * 5 + 48 + 4) |
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return NULL; |
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dsf = (frame[3] & 0x80) >> 7; |
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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* avpriv_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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void ff_dv_print_profiles(void *logctx, int loglevel) |
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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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const DVprofile *p = &dv_profiles[i]; |
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av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, " |
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"framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt), |
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p->time_base.den, p->time_base.num); |
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} |
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}
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