| /* |
| * Constants for DV codec |
| * Copyright (c) 2002 Fabrice Bellard |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * Constants for DV codec. |
| */ |
| |
| #include "libavutil/rational.h" |
| #include "avcodec.h" |
| #include "dvdata.h" |
| |
| static DVwork_chunk work_chunks_dv25pal [1*12*27]; |
| static DVwork_chunk work_chunks_dv25pal411[1*12*27]; |
| static DVwork_chunk work_chunks_dv25ntsc [1*10*27]; |
| static DVwork_chunk work_chunks_dv50pal [2*12*27]; |
| static DVwork_chunk work_chunks_dv50ntsc [2*10*27]; |
| static DVwork_chunk work_chunks_dv100palp [2*12*27]; |
| static DVwork_chunk work_chunks_dv100ntscp[2*10*27]; |
| static DVwork_chunk work_chunks_dv100pali [4*12*27]; |
| static DVwork_chunk work_chunks_dv100ntsci[4*10*27]; |
| |
| static uint32_t dv_idct_factor_sd [2*2*22*64]; |
| static uint32_t dv_idct_factor_hd1080[2*4*16*64]; |
| static uint32_t dv_idct_factor_hd720 [2*4*16*64]; |
| |
| static const DVprofile dv_profiles[] = { |
| { .dsf = 0, |
| .video_stype = 0x0, |
| .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */ |
| .difseg_size = 10, |
| .n_difchan = 1, |
| .time_base = { 1001, 30000 }, |
| .ltc_divisor = 30, |
| .height = 480, |
| .width = 720, |
| .sar = {{8, 9}, {32, 27}}, |
| .work_chunks = &work_chunks_dv25ntsc[0], |
| .idct_factor = &dv_idct_factor_sd[0], |
| .pix_fmt = PIX_FMT_YUV411P, |
| .bpm = 6, |
| .block_sizes = block_sizes_dv2550, |
| .audio_stride = 90, |
| .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ |
| .audio_shuffle = dv_audio_shuffle525, |
| }, |
| { .dsf = 1, |
| .video_stype = 0x0, |
| .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */ |
| .difseg_size = 12, |
| .n_difchan = 1, |
| .time_base = { 1, 25 }, |
| .ltc_divisor = 25, |
| .height = 576, |
| .width = 720, |
| .sar = {{16, 15}, {64, 45}}, |
| .work_chunks = &work_chunks_dv25pal[0], |
| .idct_factor = &dv_idct_factor_sd[0], |
| .pix_fmt = PIX_FMT_YUV420P, |
| .bpm = 6, |
| .block_sizes = block_sizes_dv2550, |
| .audio_stride = 108, |
| .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
| .audio_shuffle = dv_audio_shuffle625, |
| }, |
| { .dsf = 1, |
| .video_stype = 0x0, |
| .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */ |
| .difseg_size = 12, |
| .n_difchan = 1, |
| .time_base = { 1, 25 }, |
| .ltc_divisor = 25, |
| .height = 576, |
| .width = 720, |
| .sar = {{16, 15}, {64, 45}}, |
| .work_chunks = &work_chunks_dv25pal411[0], |
| .idct_factor = &dv_idct_factor_sd[0], |
| .pix_fmt = PIX_FMT_YUV411P, |
| .bpm = 6, |
| .block_sizes = block_sizes_dv2550, |
| .audio_stride = 108, |
| .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
| .audio_shuffle = dv_audio_shuffle625, |
| }, |
| { .dsf = 0, |
| .video_stype = 0x4, |
| .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */ |
| .difseg_size = 10, /* also known as "DVCPRO50" */ |
| .n_difchan = 2, |
| .time_base = { 1001, 30000 }, |
| .ltc_divisor = 30, |
| .height = 480, |
| .width = 720, |
| .sar = {{8, 9}, {32, 27}}, |
| .work_chunks = &work_chunks_dv50ntsc[0], |
| .idct_factor = &dv_idct_factor_sd[0], |
| .pix_fmt = PIX_FMT_YUV422P, |
| .bpm = 6, |
| .block_sizes = block_sizes_dv2550, |
| .audio_stride = 90, |
| .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ |
| .audio_shuffle = dv_audio_shuffle525, |
| }, |
| { .dsf = 1, |
| .video_stype = 0x4, |
| .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */ |
| .difseg_size = 12, /* also known as "DVCPRO50" */ |
| .n_difchan = 2, |
| .time_base = { 1, 25 }, |
| .ltc_divisor = 25, |
| .height = 576, |
| .width = 720, |
| .sar = {{16, 15}, {64, 45}}, |
| .work_chunks = &work_chunks_dv50pal[0], |
| .idct_factor = &dv_idct_factor_sd[0], |
| .pix_fmt = PIX_FMT_YUV422P, |
| .bpm = 6, |
| .block_sizes = block_sizes_dv2550, |
| .audio_stride = 108, |
| .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
| .audio_shuffle = dv_audio_shuffle625, |
| }, |
| { .dsf = 0, |
| .video_stype = 0x14, |
| .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */ |
| .difseg_size = 10, /* also known as "DVCPRO HD" */ |
| .n_difchan = 4, |
| .time_base = { 1001, 30000 }, |
| .ltc_divisor = 30, |
| .height = 1080, |
| .width = 1280, |
| .sar = {{1, 1}, {3, 2}}, |
| .work_chunks = &work_chunks_dv100ntsci[0], |
| .idct_factor = &dv_idct_factor_hd1080[0], |
| .pix_fmt = PIX_FMT_YUV422P, |
| .bpm = 8, |
| .block_sizes = block_sizes_dv100, |
| .audio_stride = 90, |
| .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ |
| .audio_shuffle = dv_audio_shuffle525, |
| }, |
| { .dsf = 1, |
| .video_stype = 0x14, |
| .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */ |
| .difseg_size = 12, /* also known as "DVCPRO HD" */ |
| .n_difchan = 4, |
| .time_base = { 1, 25 }, |
| .ltc_divisor = 25, |
| .height = 1080, |
| .width = 1440, |
| .sar = {{1, 1}, {4, 3}}, |
| .work_chunks = &work_chunks_dv100pali[0], |
| .idct_factor = &dv_idct_factor_hd1080[0], |
| .pix_fmt = PIX_FMT_YUV422P, |
| .bpm = 8, |
| .block_sizes = block_sizes_dv100, |
| .audio_stride = 108, |
| .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
| .audio_shuffle = dv_audio_shuffle625, |
| }, |
| { .dsf = 0, |
| .video_stype = 0x18, |
| .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */ |
| .difseg_size = 10, /* also known as "DVCPRO HD" */ |
| .n_difchan = 2, |
| .time_base = { 1001, 60000 }, |
| .ltc_divisor = 60, |
| .height = 720, |
| .width = 960, |
| .sar = {{1, 1}, {4, 3}}, |
| .work_chunks = &work_chunks_dv100ntscp[0], |
| .idct_factor = &dv_idct_factor_hd720[0], |
| .pix_fmt = PIX_FMT_YUV422P, |
| .bpm = 8, |
| .block_sizes = block_sizes_dv100, |
| .audio_stride = 90, |
| .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */ |
| .audio_shuffle = dv_audio_shuffle525, |
| }, |
| { .dsf = 1, |
| .video_stype = 0x18, |
| .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */ |
| .difseg_size = 12, /* also known as "DVCPRO HD" */ |
| .n_difchan = 2, |
| .time_base = { 1, 50 }, |
| .ltc_divisor = 50, |
| .height = 720, |
| .width = 960, |
| .sar = {{1, 1}, {4, 3}}, |
| .work_chunks = &work_chunks_dv100palp[0], |
| .idct_factor = &dv_idct_factor_hd720[0], |
| .pix_fmt = PIX_FMT_YUV422P, |
| .bpm = 8, |
| .block_sizes = block_sizes_dv100, |
| .audio_stride = 90, |
| .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
| .audio_shuffle = dv_audio_shuffle625, |
| }, |
| { .dsf = 1, |
| .video_stype = 0x1, |
| .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */ |
| .difseg_size = 12, |
| .n_difchan = 1, |
| .time_base = { 1, 25 }, |
| .ltc_divisor = 25, |
| .height = 576, |
| .width = 720, |
| .sar = {{16, 15}, {64, 45}}, |
| .work_chunks = &work_chunks_dv25pal[0], |
| .idct_factor = &dv_idct_factor_sd[0], |
| .pix_fmt = PIX_FMT_YUV420P, |
| .bpm = 6, |
| .block_sizes = block_sizes_dv2550, |
| .audio_stride = 108, |
| .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */ |
| .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 }, |
| .audio_shuffle = dv_audio_shuffle625, |
| } |
| }; |
| |
| const DVprofile* ff_dv_frame_profile(const DVprofile *sys, |
| const uint8_t* frame, unsigned buf_size) |
| { |
| int i, dsf, stype; |
| |
| if(buf_size < DV_PROFILE_BYTES) |
| return NULL; |
| |
| dsf = (frame[3] & 0x80) >> 7; |
| stype = frame[80*5 + 48 + 3] & 0x1f; |
| |
| /* 576i50 25Mbps 4:1:1 is a special case */ |
| if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) { |
| return &dv_profiles[2]; |
| } |
| |
| for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++) |
| if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype) |
| return &dv_profiles[i]; |
| |
| /* check if old sys matches and assumes corrupted input */ |
| if (sys && buf_size == sys->frame_size) |
| return sys; |
| |
| return NULL; |
| } |
| |
| const DVprofile* ff_dv_codec_profile(AVCodecContext* codec) |
| { |
| int i; |
| |
| for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++) |
| if (codec->height == dv_profiles[i].height && |
| codec->pix_fmt == dv_profiles[i].pix_fmt && |
| codec->width == dv_profiles[i].width) |
| return &dv_profiles[i]; |
| |
| return NULL; |
| } |
| |
