1/* 2 * Copyright (c) 2003 Michael Niedermayer 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21/** 22 * @file 23 * ASUS V1/V2 encoder. 24 */ 25 26#include "config_components.h" 27 28#include "libavutil/attributes.h" 29#include "libavutil/mem.h" 30 31#include "aandcttab.h" 32#include "asv.h" 33#include "avcodec.h" 34#include "codec_internal.h" 35#include "dct.h" 36#include "encode.h" 37#include "fdctdsp.h" 38#include "mpeg12data.h" 39 40static inline void asv1_put_level(PutBitContext *pb, int level) 41{ 42 unsigned int index = level + 3; 43 44 if (index <= 6) { 45 put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]); 46 } else { 47 put_bits(pb, 3, 0); /* Escape code */ 48 put_sbits(pb, 8, level); 49 } 50} 51 52static inline void asv2_put_level(ASV1Context *a, PutBitContext *pb, int level) 53{ 54 unsigned int index = level + 31; 55 56 if (index <= 62) { 57 put_bits_le(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]); 58 } else { 59 put_bits_le(pb, 5, 0); /* Escape code */ 60 if (level < -128 || level > 127) { 61 av_log(a->avctx, AV_LOG_WARNING, "Clipping level %d, increase qscale\n", level); 62 level = av_clip_int8(level); 63 } 64 put_bits_le(pb, 8, level & 0xFF); 65 } 66} 67 68static inline void asv1_encode_block(ASV1Context *a, int16_t block[64]) 69{ 70 int i; 71 int nc_count = 0; 72 73 put_bits(&a->pb, 8, (block[0] + 32) >> 6); 74 block[0] = 0; 75 76 for (i = 0; i < 10; i++) { 77 const int index = ff_asv_scantab[4 * i]; 78 int ccp = 0; 79 80 if ((block[index + 0] = (block[index + 0] * 81 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16)) 82 ccp |= 8; 83 if ((block[index + 8] = (block[index + 8] * 84 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16)) 85 ccp |= 4; 86 if ((block[index + 1] = (block[index + 1] * 87 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16)) 88 ccp |= 2; 89 if ((block[index + 9] = (block[index + 9] * 90 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16)) 91 ccp |= 1; 92 93 if (ccp) { 94 for (; nc_count; nc_count--) 95 put_bits(&a->pb, 2, 2); /* Skip */ 96 97 put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]); 98 99 if (ccp & 8) 100 asv1_put_level(&a->pb, block[index + 0]); 101 if (ccp & 4) 102 asv1_put_level(&a->pb, block[index + 8]); 103 if (ccp & 2) 104 asv1_put_level(&a->pb, block[index + 1]); 105 if (ccp & 1) 106 asv1_put_level(&a->pb, block[index + 9]); 107 } else { 108 nc_count++; 109 } 110 } 111 put_bits(&a->pb, 5, 0xF); /* End of block */ 112} 113 114static inline void asv2_encode_block(ASV1Context *a, int16_t block[64]) 115{ 116 int i; 117 int count = 0; 118 119 for (count = 63; count > 3; count--) { 120 const int index = ff_asv_scantab[count]; 121 if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16) 122 break; 123 } 124 125 count >>= 2; 126 127 put_bits_le(&a->pb, 4, count); 128 put_bits_le(&a->pb, 8, (block[0] + 32) >> 6); 129 block[0] = 0; 130 131 for (i = 0; i <= count; i++) { 132 const int index = ff_asv_scantab[4 * i]; 133 int ccp = 0; 134 135 if ((block[index + 0] = (block[index + 0] * 136 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16)) 137 ccp |= 8; 138 if ((block[index + 8] = (block[index + 8] * 139 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16)) 140 ccp |= 4; 141 if ((block[index + 1] = (block[index + 1] * 142 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16)) 143 ccp |= 2; 144 if ((block[index + 9] = (block[index + 9] * 145 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16)) 146 ccp |= 1; 147 148 av_assert2(i || ccp < 8); 149 if (i) 150 put_bits_le(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]); 151 else 152 put_bits_le(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]); 153 154 if (ccp) { 155 if (ccp & 8) 156 asv2_put_level(a, &a->pb, block[index + 0]); 157 if (ccp & 4) 158 asv2_put_level(a, &a->pb, block[index + 8]); 159 if (ccp & 2) 160 asv2_put_level(a, &a->pb, block[index + 1]); 161 if (ccp & 1) 162 asv2_put_level(a, &a->pb, block[index + 9]); 163 } 164 } 165} 166 167#define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8) 168 169static inline int encode_mb(ASV1Context *a, int16_t block[6][64]) 170{ 171 int i; 172 173 av_assert0(put_bytes_left(&a->pb, 0) >= MAX_MB_SIZE); 174 175 if (a->avctx->codec_id == AV_CODEC_ID_ASV1) { 176 for (i = 0; i < 6; i++) 177 asv1_encode_block(a, block[i]); 178 } else { 179 for (i = 0; i < 6; i++) { 180 asv2_encode_block(a, block[i]); 181 } 182 } 183 return 0; 184} 185 186static inline void dct_get(ASV1Context *a, const AVFrame *frame, 187 int mb_x, int mb_y) 188{ 189 int16_t (*block)[64] = a->block; 190 int linesize = frame->linesize[0]; 191 int i; 192 193 uint8_t *ptr_y = frame->data[0] + (mb_y * 16 * linesize) + mb_x * 16; 194 uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8; 195 uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8; 196 197 a->pdsp.get_pixels(block[0], ptr_y, linesize); 198 a->pdsp.get_pixels(block[1], ptr_y + 8, linesize); 199 a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize); 200 a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize); 201 for (i = 0; i < 4; i++) 202 a->fdsp.fdct(block[i]); 203 204 if (!(a->avctx->flags & AV_CODEC_FLAG_GRAY)) { 205 a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]); 206 a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]); 207 for (i = 4; i < 6; i++) 208 a->fdsp.fdct(block[i]); 209 } 210} 211 212static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, 213 const AVFrame *pict, int *got_packet) 214{ 215 ASV1Context *const a = avctx->priv_data; 216 int size, ret; 217 int mb_x, mb_y; 218 219 if (pict->width % 16 || pict->height % 16) { 220 AVFrame *clone = av_frame_alloc(); 221 int i; 222 223 if (!clone) 224 return AVERROR(ENOMEM); 225 clone->format = pict->format; 226 clone->width = FFALIGN(pict->width, 16); 227 clone->height = FFALIGN(pict->height, 16); 228 ret = av_frame_get_buffer(clone, 0); 229 if (ret < 0) { 230 av_frame_free(&clone); 231 return ret; 232 } 233 234 ret = av_frame_copy(clone, pict); 235 if (ret < 0) { 236 av_frame_free(&clone); 237 return ret; 238 } 239 240 for (i = 0; i<3; i++) { 241 int x, y; 242 int w = AV_CEIL_RSHIFT(pict->width, !!i); 243 int h = AV_CEIL_RSHIFT(pict->height, !!i); 244 int w2 = AV_CEIL_RSHIFT(clone->width, !!i); 245 int h2 = AV_CEIL_RSHIFT(clone->height, !!i); 246 for (y=0; y<h; y++) 247 for (x=w; x<w2; x++) 248 clone->data[i][x + y*clone->linesize[i]] = 249 clone->data[i][w - 1 + y*clone->linesize[i]]; 250 for (y=h; y<h2; y++) 251 for (x=0; x<w2; x++) 252 clone->data[i][x + y*clone->linesize[i]] = 253 clone->data[i][x + (h-1)*clone->linesize[i]]; 254 } 255 ret = encode_frame(avctx, pkt, clone, got_packet); 256 257 av_frame_free(&clone); 258 return ret; 259 } 260 261 if ((ret = ff_alloc_packet(avctx, pkt, a->mb_height * a->mb_width * MAX_MB_SIZE + 262 AV_INPUT_BUFFER_MIN_SIZE)) < 0) 263 return ret; 264 265 init_put_bits(&a->pb, pkt->data, pkt->size); 266 267 for (mb_y = 0; mb_y < a->mb_height2; mb_y++) { 268 for (mb_x = 0; mb_x < a->mb_width2; mb_x++) { 269 dct_get(a, pict, mb_x, mb_y); 270 encode_mb(a, a->block); 271 } 272 } 273 274 if (a->mb_width2 != a->mb_width) { 275 mb_x = a->mb_width2; 276 for (mb_y = 0; mb_y < a->mb_height2; mb_y++) { 277 dct_get(a, pict, mb_x, mb_y); 278 encode_mb(a, a->block); 279 } 280 } 281 282 if (a->mb_height2 != a->mb_height) { 283 mb_y = a->mb_height2; 284 for (mb_x = 0; mb_x < a->mb_width; mb_x++) { 285 dct_get(a, pict, mb_x, mb_y); 286 encode_mb(a, a->block); 287 } 288 } 289 emms_c(); 290 291 if (avctx->codec_id == AV_CODEC_ID_ASV1) 292 flush_put_bits(&a->pb); 293 else 294 flush_put_bits_le(&a->pb); 295 AV_WN32(put_bits_ptr(&a->pb), 0); 296 size = (put_bytes_output(&a->pb) + 3) / 4; 297 298 if (avctx->codec_id == AV_CODEC_ID_ASV1) { 299 a->bbdsp.bswap_buf((uint32_t *) pkt->data, 300 (uint32_t *) pkt->data, size); 301 } 302 303 pkt->size = size * 4; 304 *got_packet = 1; 305 306 return 0; 307} 308 309static av_cold int encode_init(AVCodecContext *avctx) 310{ 311 ASV1Context *const a = avctx->priv_data; 312 int i; 313 const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2; 314 315 ff_asv_common_init(avctx); 316 ff_fdctdsp_init(&a->fdsp, avctx); 317 ff_pixblockdsp_init(&a->pdsp, avctx); 318 319 if (avctx->global_quality <= 0) 320 avctx->global_quality = 4 * FF_QUALITY_SCALE; 321 322 a->inv_qscale = (32 * scale * FF_QUALITY_SCALE + 323 avctx->global_quality / 2) / avctx->global_quality; 324 325 avctx->extradata = av_mallocz(8); 326 if (!avctx->extradata) 327 return AVERROR(ENOMEM); 328 avctx->extradata_size = 8; 329 ((uint32_t *) avctx->extradata)[0] = av_le2ne32(a->inv_qscale); 330 ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS")); 331 332 for (i = 0; i < 64; i++) { 333 if (a->fdsp.fdct == ff_fdct_ifast) { 334 int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i]; 335 a->q_intra_matrix[i] = (((int64_t)a->inv_qscale << 30) + q / 2) / q; 336 } else { 337 int q = 32 * scale * ff_mpeg1_default_intra_matrix[i]; 338 a->q_intra_matrix[i] = ((a->inv_qscale << 16) + q / 2) / q; 339 } 340 } 341 342 return 0; 343} 344 345#if CONFIG_ASV1_ENCODER 346const FFCodec ff_asv1_encoder = { 347 .p.name = "asv1", 348 .p.long_name = NULL_IF_CONFIG_SMALL("ASUS V1"), 349 .p.type = AVMEDIA_TYPE_VIDEO, 350 .p.id = AV_CODEC_ID_ASV1, 351 .priv_data_size = sizeof(ASV1Context), 352 .init = encode_init, 353 FF_CODEC_ENCODE_CB(encode_frame), 354 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, 355 AV_PIX_FMT_NONE }, 356 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, 357}; 358#endif 359 360#if CONFIG_ASV2_ENCODER 361const FFCodec ff_asv2_encoder = { 362 .p.name = "asv2", 363 .p.long_name = NULL_IF_CONFIG_SMALL("ASUS V2"), 364 .p.type = AVMEDIA_TYPE_VIDEO, 365 .p.id = AV_CODEC_ID_ASV2, 366 .priv_data_size = sizeof(ASV1Context), 367 .init = encode_init, 368 FF_CODEC_ENCODE_CB(encode_frame), 369 .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, 370 AV_PIX_FMT_NONE }, 371 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, 372}; 373#endif 374