* Constants for DV codec
* Copyright (c) 2002 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavcodec/dvdata.h
+ * @file
* Constants for DV codec.
*/
#ifndef AVCODEC_DVDATA_H
#define AVCODEC_DVDATA_H
-#include "libavutil/rational.h"
#include "avcodec.h"
+#include "dsputil.h"
+#include "get_bits.h"
+#include "dv_profile.h"
-typedef struct DVwork_chunk {
- uint16_t buf_offset;
- uint16_t mb_coordinates[5];
-} DVwork_chunk;
+typedef struct DVVideoContext {
+ const DVprofile *sys;
+ AVFrame picture;
+ AVCodecContext *avctx;
+ uint8_t *buf;
-/*
- * DVprofile is used to express the differences between various
- * DV flavors. For now it's primarily used for differentiating
- * 525/60 and 625/50, but the plans are to use it for various
- * DV specs as well (e.g. SMPTE314M vs. IEC 61834).
- */
-typedef struct DVprofile {
- int dsf; /* value of the dsf in the DV header */
- int video_stype; /* stype for VAUX source pack */
- int frame_size; /* total size of one frame in bytes */
- int difseg_size; /* number of DIF segments per DIF channel */
- int n_difchan; /* number of DIF channels per frame */
- AVRational time_base; /* 1/framerate */
- int ltc_divisor; /* FPS from the LTS standpoint */
- int height; /* picture height in pixels */
- int width; /* picture width in pixels */
- AVRational sar[2]; /* sample aspect ratios for 4:3 and 16:9 */
- DVwork_chunk *work_chunks; /* each thread gets its own chunk of frame to work on */
- uint32_t *idct_factor; /* set of iDCT factor tables */
- enum PixelFormat pix_fmt; /* picture pixel format */
- int bpm; /* blocks per macroblock */
- const uint8_t *block_sizes; /* AC block sizes, in bits */
- int audio_stride; /* size of audio_shuffle table */
- int audio_min_samples[3]; /* min amount of audio samples */
- /* for 48kHz, 44.1kHz and 32kHz */
- int audio_samples_dist[5]; /* how many samples are supposed to be */
- /* in each frame in a 5 frames window */
- const uint8_t (*audio_shuffle)[9]; /* PCM shuffling table */
-} DVprofile;
-
-/* unquant tables (not used directly) */
-static const uint8_t dv_quant_shifts[22][4] = {
- { 3,3,4,4 },
- { 3,3,4,4 },
- { 2,3,3,4 },
- { 2,3,3,4 },
- { 2,2,3,3 },
- { 2,2,3,3 },
- { 1,2,2,3 },
- { 1,2,2,3 },
- { 1,1,2,2 },
- { 1,1,2,2 },
- { 0,1,1,2 },
- { 0,1,1,2 },
- { 0,0,1,1 },
- { 0,0,1,1 },
- { 0,0,0,1 },
- { 0,0,0,0 },
- { 0,0,0,0 },
- { 0,0,0,0 },
- { 0,0,0,0 },
- { 0,0,0,0 },
- { 0,0,0,0 },
- { 0,0,0,0 },
-};
-
-static const uint8_t dv_quant_offset[4] = { 6, 3, 0, 1 };
-static const uint8_t dv_quant_areas[4] = { 6, 21, 43, 64 };
-
-/* quantization quanta by QNO for DV100 */
-static const uint8_t dv100_qstep[16] = {
- 1, /* QNO = 0 and 1 both have no quantization */
- 1,
- 2, 3, 4, 5, 6, 7, 8, 16, 18, 20, 22, 24, 28, 52
-};
-
-/* DV25/50 DCT coefficient weights and inverse weights */
-/* created by dvtables.py */
-static const int dv_weight_bits = 18;
-static const int dv_weight_88[64] = {
- 131072, 257107, 257107, 242189, 252167, 242189, 235923, 237536,
- 237536, 235923, 229376, 231390, 223754, 231390, 229376, 222935,
- 224969, 217965, 217965, 224969, 222935, 200636, 218652, 211916,
- 212325, 211916, 218652, 200636, 188995, 196781, 205965, 206433,
- 206433, 205965, 196781, 188995, 185364, 185364, 200636, 200704,
- 200636, 185364, 185364, 174609, 180568, 195068, 195068, 180568,
- 174609, 170091, 175557, 189591, 175557, 170091, 165371, 170627,
- 170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,
-};
-static const int dv_weight_248[64] = {
- 131072, 242189, 257107, 237536, 229376, 200636, 242189, 223754,
- 224969, 196781, 262144, 242189, 229376, 200636, 257107, 237536,
- 211916, 185364, 235923, 217965, 229376, 211916, 206433, 180568,
- 242189, 223754, 224969, 196781, 211916, 185364, 235923, 217965,
- 200704, 175557, 222935, 205965, 200636, 185364, 195068, 170627,
- 229376, 211916, 206433, 180568, 200704, 175557, 222935, 205965,
- 175557, 153560, 188995, 174609, 165371, 144651, 200636, 185364,
- 195068, 170627, 175557, 153560, 188995, 174609, 165371, 144651,
-};
-static const int dv_iweight_bits = 14;
-static const int dv_iweight_88[64] = {
- 32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,
- 18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,
- 19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,
- 20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,
- 20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,
- 21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,
- 24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,
- 25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,
-};
-static const int dv_iweight_248[64] = {
- 32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,
- 19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079,
- 20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764,
- 17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692,
- 21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191,
- 18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867,
- 24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173,
- 22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642,
-};
-
-/**
- * The "inverse" DV100 weights are actually just the spec weights (zig-zagged).
- */
-static const int dv_iweight_1080_y[64] = {
- 128, 16, 16, 17, 17, 17, 18, 18,
- 18, 18, 18, 18, 19, 18, 18, 19,
- 19, 19, 19, 19, 19, 42, 38, 40,
- 40, 40, 38, 42, 44, 43, 41, 41,
- 41, 41, 43, 44, 45, 45, 42, 42,
- 42, 45, 45, 48, 46, 43, 43, 46,
- 48, 49, 48, 44, 48, 49, 101, 98,
- 98, 101, 104, 109, 104, 116, 116, 123,
-};
-static const int dv_iweight_1080_c[64] = {
- 128, 16, 16, 17, 17, 17, 25, 25,
- 25, 25, 26, 25, 26, 25, 26, 26,
- 26, 27, 27, 26, 26, 42, 38, 40,
- 40, 40, 38, 42, 44, 43, 41, 41,
- 41, 41, 43, 44, 91, 91, 84, 84,
- 84, 91, 91, 96, 93, 86, 86, 93,
- 96, 197, 191, 177, 191, 197, 203, 197,
- 197, 203, 209, 219, 209, 232, 232, 246,
-};
-static const int dv_iweight_720_y[64] = {
- 128, 16, 16, 17, 17, 17, 18, 18,
- 18, 18, 18, 18, 19, 18, 18, 19,
- 19, 19, 19, 19, 19, 42, 38, 40,
- 40, 40, 38, 42, 44, 43, 41, 41,
- 41, 41, 43, 44, 68, 68, 63, 63,
- 63, 68, 68, 96, 92, 86, 86, 92,
- 96, 98, 96, 88, 96, 98, 202, 196,
- 196, 202, 208, 218, 208, 232, 232, 246,
-};
-static const int dv_iweight_720_c[64] = {
- 128, 24, 24, 26, 26, 26, 36, 36,
- 36, 36, 36, 36, 38, 36, 36, 38,
- 38, 38, 38, 38, 38, 84, 76, 80,
- 80, 80, 76, 84, 88, 86, 82, 82,
- 82, 82, 86, 88, 182, 182, 168, 168,
- 168, 182, 182, 192, 186, 192, 172, 186,
- 192, 394, 382, 354, 382, 394, 406, 394,
- 394, 406, 418, 438, 418, 464, 464, 492,
-};
-
-static const uint8_t dv_audio_shuffle525[10][9] = {
- { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
- { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
- { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
- { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
- { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
-
- { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
- { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
- { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
- { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
- { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
-};
-
-static const uint8_t dv_audio_shuffle625[12][9] = {
- { 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */
- { 6, 42, 78, 32, 68, 104, 22, 58, 94},
- { 12, 48, 84, 2, 38, 74, 28, 64, 100},
- { 18, 54, 90, 8, 44, 80, 34, 70, 106},
- { 24, 60, 96, 14, 50, 86, 4, 40, 76},
- { 30, 66, 102, 20, 56, 92, 10, 46, 82},
-
- { 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */
- { 7, 43, 79, 33, 69, 105, 23, 59, 95},
- { 13, 49, 85, 3, 39, 75, 29, 65, 101},
- { 19, 55, 91, 9, 45, 81, 35, 71, 107},
- { 25, 61, 97, 15, 51, 87, 5, 41, 77},
- { 31, 67, 103, 21, 57, 93, 11, 47, 83},
-};
-
-static const av_unused int dv_audio_frequency[3] = {
- 48000, 44100, 32000,
-};
+ uint8_t dv_zigzag[2][64];
-/* macroblock bit budgets */
-static const uint8_t block_sizes_dv2550[8] = {
- 112, 112, 112, 112, 80, 80, 0, 0,
-};
-
-static const uint8_t block_sizes_dv100[8] = {
- 80, 80, 80, 80, 80, 80, 64, 64,
-};
+ void (*get_pixels)(DCTELEM *block, const uint8_t *pixels, int line_size);
+ void (*fdct[2])(DCTELEM *block);
+ void (*idct_put[2])(uint8_t *dest, int line_size, DCTELEM *block);
+ me_cmp_func ildct_cmp;
+} DVVideoContext;
enum dv_section_type {
dv_sect_header = 0x1f,
dv_unknown_pack = 0xff,
};
+extern const uint8_t ff_dv_quant_shifts[22][4];
+extern const uint8_t ff_dv_quant_offset[4];
+
+extern const int ff_dv_iweight_88[64];
+extern const int ff_dv_iweight_248[64];
+extern const int ff_dv_iweight_1080_y[64];
+extern const int ff_dv_iweight_1080_c[64];
+extern const int ff_dv_iweight_720_y[64];
+extern const int ff_dv_iweight_720_c[64];
+
#define DV_PROFILE_IS_HD(p) ((p)->video_stype & 0x10)
#define DV_PROFILE_IS_1080i50(p) (((p)->video_stype == 0x14) && ((p)->dsf == 1))
#define DV_PROFILE_IS_720p50(p) (((p)->video_stype == 0x18) && ((p)->dsf == 1))
*/
#define DV_MAX_BPM 8
-const DVprofile* ff_dv_frame_profile(const DVprofile *sys,
- const uint8_t* frame, unsigned buf_size);
-const DVprofile* ff_dv_codec_profile(AVCodecContext* codec);
+#define TEX_VLC_BITS 9
-static inline int dv_write_dif_id(enum dv_section_type t, uint8_t chan_num,
- uint8_t seq_num, uint8_t dif_num,
- uint8_t* buf)
+extern RL_VLC_ELEM ff_dv_rl_vlc[1184];
+
+int ff_dv_init_dynamic_tables(const DVprofile *d);
+int ff_dvvideo_init(AVCodecContext *avctx);
+
+static inline int dv_work_pool_size(const DVprofile *d)
{
- buf[0] = (uint8_t)t; /* Section type */
- buf[1] = (seq_num << 4) | /* DIF seq number 0-9 for 525/60; 0-11 for 625/50 */
- (chan_num << 3) | /* FSC: for 50Mb/s 0 - first channel; 1 - second */
- 7; /* reserved -- always 1 */
- buf[2] = dif_num; /* DIF block number Video: 0-134, Audio: 0-8 */
- return 3;
+ int size = d->n_difchan*d->difseg_size*27;
+ if (DV_PROFILE_IS_1080i50(d))
+ size -= 3*27;
+ if (DV_PROFILE_IS_720p50(d))
+ size -= 4*27;
+ return size;
}
-
-static inline int dv_write_ssyb_id(uint8_t syb_num, uint8_t fr, uint8_t* buf)
+static inline void dv_calculate_mb_xy(DVVideoContext *s, DVwork_chunk *work_chunk, int m, int *mb_x, int *mb_y)
{
- if (syb_num == 0 || syb_num == 6) {
- buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */
- (0 << 4) | /* AP3 (Subcode application ID) */
- 0x0f; /* reserved -- always 1 */
- }
- else if (syb_num == 11) {
- buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */
- 0x7f; /* reserved -- always 1 */
- }
- else {
- buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */
- (0 << 4) | /* APT (Track application ID) */
- 0x0f; /* reserved -- always 1 */
- }
- buf[1] = 0xf0 | /* reserved -- always 1 */
- (syb_num & 0x0f); /* SSYB number 0 - 11 */
- buf[2] = 0xff; /* reserved -- always 1 */
- return 3;
+ *mb_x = work_chunk->mb_coordinates[m] & 0xff;
+ *mb_y = work_chunk->mb_coordinates[m] >> 8;
+
+ /* We work with 720p frames split in half. The odd half-frame (chan==2,3) is displaced :-( */
+ if (s->sys->height == 720 && !(s->buf[1]&0x0C)) {
+ *mb_y -= (*mb_y>17)?18:-72; /* shifting the Y coordinate down by 72/2 macro blocks */
+ }
}
#endif /* AVCODEC_DVDATA_H */