| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Ut Video encoder | ||
| 3 | * Copyright (c) 2012 Jan Ekstr?m | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * @file | ||
| 24 | * Ut Video encoder | ||
| 25 | */ | ||
| 26 | |||
| 27 | #include "libavutil/avassert.h" | ||
| 28 | #include "libavutil/imgutils.h" | ||
| 29 | #include "libavutil/intreadwrite.h" | ||
| 30 | #include "libavutil/mem.h" | ||
| 31 | #include "libavutil/opt.h" | ||
| 32 | |||
| 33 | #include "avcodec.h" | ||
| 34 | #include "codec_internal.h" | ||
| 35 | #include "encode.h" | ||
| 36 | #include "bswapdsp.h" | ||
| 37 | #include "bytestream.h" | ||
| 38 | #include "lossless_videoencdsp.h" | ||
| 39 | #include "put_bits.h" | ||
| 40 | #include "utvideo.h" | ||
| 41 | #include "huffman.h" | ||
| 42 | |||
| 43 | typedef struct UtvideoContext { | ||
| 44 | const AVClass *class; | ||
| 45 | BswapDSPContext bdsp; | ||
| 46 | LLVidEncDSPContext llvidencdsp; | ||
| 47 | |||
| 48 | uint32_t frame_info_size, flags; | ||
| 49 | int planes; | ||
| 50 | int slices; | ||
| 51 | int compression; | ||
| 52 | int frame_pred; | ||
| 53 | |||
| 54 | ptrdiff_t slice_stride; | ||
| 55 | uint8_t *slice_bits, *slice_buffer[4]; | ||
| 56 | int slice_bits_size; | ||
| 57 | } UtvideoContext; | ||
| 58 | |||
| 59 | typedef struct HuffEntry { | ||
| 60 | uint16_t sym; | ||
| 61 | uint8_t len; | ||
| 62 | uint32_t code; | ||
| 63 | } HuffEntry; | ||
| 64 | |||
| 65 | /* Compare huffman tree nodes */ | ||
| 66 | 3203178 | static int ut_huff_cmp_len(const void *a, const void *b) | |
| 67 | { | ||
| 68 | 3203178 | const HuffEntry *aa = a, *bb = b; | |
| 69 | 3203178 | return (aa->len - bb->len)*256 + aa->sym - bb->sym; | |
| 70 | } | ||
| 71 | |||
| 72 | /* Compare huffentry symbols */ | ||
| 73 | 3158830 | static int huff_cmp_sym(const void *a, const void *b) | |
| 74 | { | ||
| 75 | 3158830 | const HuffEntry *aa = a, *bb = b; | |
| 76 | 3158830 | return aa->sym - bb->sym; | |
| 77 | } | ||
| 78 | |||
| 79 | 136 | static av_cold int utvideo_encode_close(AVCodecContext *avctx) | |
| 80 | { | ||
| 81 | 136 | UtvideoContext *c = avctx->priv_data; | |
| 82 | int i; | ||
| 83 | |||
| 84 | 136 | av_freep(&c->slice_bits); | |
| 85 |
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680 | for (i = 0; i < 4; i++) |
| 86 | 544 | av_freep(&c->slice_buffer[i]); | |
| 87 | |||
| 88 | 136 | return 0; | |
| 89 | } | ||
| 90 | |||
| 91 | 136 | static av_cold int utvideo_encode_init(AVCodecContext *avctx) | |
| 92 | { | ||
| 93 | 136 | UtvideoContext *c = avctx->priv_data; | |
| 94 | int i, subsampled_height; | ||
| 95 | uint32_t original_format; | ||
| 96 | |||
| 97 | 136 | c->frame_info_size = 4; | |
| 98 | 136 | c->slice_stride = FFALIGN(avctx->width, 32); | |
| 99 | |||
| 100 |
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136 | switch (avctx->pix_fmt) { |
| 101 | 27 | case AV_PIX_FMT_GBRP: | |
| 102 | 27 | c->planes = 3; | |
| 103 | 27 | avctx->codec_tag = MKTAG('U', 'L', 'R', 'G'); | |
| 104 | 27 | original_format = UTVIDEO_RGB; | |
| 105 | 27 | break; | |
| 106 | 27 | case AV_PIX_FMT_GBRAP: | |
| 107 | 27 | c->planes = 4; | |
| 108 | 27 | avctx->codec_tag = MKTAG('U', 'L', 'R', 'A'); | |
| 109 | 27 | original_format = UTVIDEO_RGBA; | |
| 110 | 27 | avctx->bits_per_coded_sample = 32; | |
| 111 | 27 | break; | |
| 112 | 28 | case AV_PIX_FMT_YUV420P: | |
| 113 |
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28 | if (avctx->width & 1 || avctx->height & 1) { |
| 114 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 115 | "4:2:0 video requires even width and height.\n"); | ||
| 116 | ✗ | return AVERROR_INVALIDDATA; | |
| 117 | } | ||
| 118 | 28 | c->planes = 3; | |
| 119 |
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28 | if (avctx->colorspace == AVCOL_SPC_BT709) |
| 120 | ✗ | avctx->codec_tag = MKTAG('U', 'L', 'H', '0'); | |
| 121 | else | ||
| 122 | 28 | avctx->codec_tag = MKTAG('U', 'L', 'Y', '0'); | |
| 123 | 28 | original_format = UTVIDEO_420; | |
| 124 | 28 | break; | |
| 125 | 27 | case AV_PIX_FMT_YUV422P: | |
| 126 |
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27 | if (avctx->width & 1) { |
| 127 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 128 | "4:2:2 video requires even width.\n"); | ||
| 129 | ✗ | return AVERROR_INVALIDDATA; | |
| 130 | } | ||
| 131 | 27 | c->planes = 3; | |
| 132 |
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27 | if (avctx->colorspace == AVCOL_SPC_BT709) |
| 133 | ✗ | avctx->codec_tag = MKTAG('U', 'L', 'H', '2'); | |
| 134 | else | ||
| 135 | 27 | avctx->codec_tag = MKTAG('U', 'L', 'Y', '2'); | |
| 136 | 27 | original_format = UTVIDEO_422; | |
| 137 | 27 | break; | |
| 138 | 27 | case AV_PIX_FMT_YUV444P: | |
| 139 | 27 | c->planes = 3; | |
| 140 |
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27 | if (avctx->colorspace == AVCOL_SPC_BT709) |
| 141 | ✗ | avctx->codec_tag = MKTAG('U', 'L', 'H', '4'); | |
| 142 | else | ||
| 143 | 27 | avctx->codec_tag = MKTAG('U', 'L', 'Y', '4'); | |
| 144 | 27 | original_format = UTVIDEO_444; | |
| 145 | 27 | break; | |
| 146 | ✗ | default: | |
| 147 | ✗ | av_unreachable("Already checked via CODEC_PIXFMTS"); | |
| 148 | } | ||
| 149 | |||
| 150 | 136 | ff_bswapdsp_init(&c->bdsp); | |
| 151 | 136 | ff_llvidencdsp_init(&c->llvidencdsp); | |
| 152 | |||
| 153 |
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136 | if (c->frame_pred == PRED_GRADIENT) { |
| 154 | ✗ | av_log(avctx, AV_LOG_ERROR, "Gradient prediction is not supported.\n"); | |
| 155 | ✗ | return AVERROR_PATCHWELCOME; | |
| 156 | } | ||
| 157 | |||
| 158 | /* | ||
| 159 | * Check the asked slice count for obviously invalid | ||
| 160 | * values (> 256 or negative). | ||
| 161 | */ | ||
| 162 |
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136 | if (avctx->slices > 256 || avctx->slices < 0) { |
| 163 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 164 | "Slice count %d is not supported in Ut Video (theoretical range is 0-256).\n", | ||
| 165 | avctx->slices); | ||
| 166 | ✗ | return AVERROR(EINVAL); | |
| 167 | } | ||
| 168 | |||
| 169 | /* Check that the slice count is not larger than the subsampled height */ | ||
| 170 | 136 | subsampled_height = avctx->height >> av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_h; | |
| 171 |
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136 | if (avctx->slices > subsampled_height) { |
| 172 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 173 | "Slice count %d is larger than the subsampling-applied height %d.\n", | ||
| 174 | avctx->slices, subsampled_height); | ||
| 175 | ✗ | return AVERROR(EINVAL); | |
| 176 | } | ||
| 177 | |||
| 178 | /* extradata size is 4 * 32 bits */ | ||
| 179 | 136 | avctx->extradata_size = 16; | |
| 180 | |||
| 181 | 136 | avctx->extradata = av_mallocz(avctx->extradata_size + | |
| 182 | AV_INPUT_BUFFER_PADDING_SIZE); | ||
| 183 | |||
| 184 |
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136 | if (!avctx->extradata) { |
| 185 | ✗ | av_log(avctx, AV_LOG_ERROR, "Could not allocate extradata.\n"); | |
| 186 | ✗ | return AVERROR(ENOMEM); | |
| 187 | } | ||
| 188 | |||
| 189 |
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571 | for (i = 0; i < c->planes; i++) { |
| 190 | 435 | c->slice_buffer[i] = av_malloc(c->slice_stride * (avctx->height + 2) + | |
| 191 | AV_INPUT_BUFFER_PADDING_SIZE); | ||
| 192 |
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435 | if (!c->slice_buffer[i]) { |
| 193 | ✗ | av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer 1.\n"); | |
| 194 | ✗ | return AVERROR(ENOMEM); | |
| 195 | } | ||
| 196 | } | ||
| 197 | |||
| 198 | /* | ||
| 199 | * Set the version of the encoder. | ||
| 200 | * Last byte is "implementation ID", which is | ||
| 201 | * obtained from the creator of the format. | ||
| 202 | * Libavcodec has been assigned with the ID 0xF0. | ||
| 203 | */ | ||
| 204 | 136 | AV_WB32(avctx->extradata, MKTAG(1, 0, 0, 0xF0)); | |
| 205 | |||
| 206 | /* | ||
| 207 | * Set the "original format" | ||
| 208 | * Not used for anything during decoding. | ||
| 209 | */ | ||
| 210 | 136 | AV_WL32(avctx->extradata + 4, original_format); | |
| 211 | |||
| 212 | /* Write 4 as the 'frame info size' */ | ||
| 213 | 136 | AV_WL32(avctx->extradata + 8, c->frame_info_size); | |
| 214 | |||
| 215 | /* | ||
| 216 | * Set how many slices are going to be used. | ||
| 217 | * By default uses multiple slices depending on the subsampled height. | ||
| 218 | * This enables multithreading in the official decoder. | ||
| 219 | */ | ||
| 220 |
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136 | if (!avctx->slices) { |
| 221 | 1 | c->slices = subsampled_height / 120; | |
| 222 | |||
| 223 |
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1 | if (!c->slices) |
| 224 | ✗ | c->slices = 1; | |
| 225 |
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1 | else if (c->slices > 256) |
| 226 | ✗ | c->slices = 256; | |
| 227 | } else { | ||
| 228 | 135 | c->slices = avctx->slices; | |
| 229 | } | ||
| 230 | |||
| 231 | /* Set compression mode */ | ||
| 232 | 136 | c->compression = COMP_HUFF; | |
| 233 | |||
| 234 | /* | ||
| 235 | * Set the encoding flags: | ||
| 236 | * - Slice count minus 1 | ||
| 237 | * - Interlaced encoding mode flag, set to zero for now. | ||
| 238 | * - Compression mode (none/huff) | ||
| 239 | * And write the flags. | ||
| 240 | */ | ||
| 241 | 136 | c->flags = (c->slices - 1U) << 24; | |
| 242 | 136 | c->flags |= 0 << 11; // bit field to signal interlaced encoding mode | |
| 243 | 136 | c->flags |= c->compression; | |
| 244 | |||
| 245 | 136 | AV_WL32(avctx->extradata + 12, c->flags); | |
| 246 | |||
| 247 | 136 | return 0; | |
| 248 | } | ||
| 249 | |||
| 250 | 300 | static void mangle_rgb_planes(uint8_t *dst[4], ptrdiff_t dst_stride, | |
| 251 | uint8_t *const src[4], int planes, const int stride[4], | ||
| 252 | int width, int height) | ||
| 253 | { | ||
| 254 | int i, j; | ||
| 255 | 300 | int k = 2 * dst_stride; | |
| 256 | 300 | const uint8_t *sg = src[0]; | |
| 257 | 300 | const uint8_t *sb = src[1]; | |
| 258 | 300 | const uint8_t *sr = src[2]; | |
| 259 | 300 | const uint8_t *sa = src[3]; | |
| 260 | unsigned int g; | ||
| 261 | |||
| 262 |
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86700 | for (j = 0; j < height; j++) { |
| 263 |
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86400 | if (planes == 3) { |
| 264 |
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15249600 | for (i = 0; i < width; i++) { |
| 265 | 15206400 | g = sg[i]; | |
| 266 | 15206400 | dst[0][k] = g; | |
| 267 | 15206400 | g += 0x80; | |
| 268 | 15206400 | dst[1][k] = sb[i] - g; | |
| 269 | 15206400 | dst[2][k] = sr[i] - g; | |
| 270 | 15206400 | k++; | |
| 271 | } | ||
| 272 | } else { | ||
| 273 |
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15249600 | for (i = 0; i < width; i++) { |
| 274 | 15206400 | g = sg[i]; | |
| 275 | 15206400 | dst[0][k] = g; | |
| 276 | 15206400 | g += 0x80; | |
| 277 | 15206400 | dst[1][k] = sb[i] - g; | |
| 278 | 15206400 | dst[2][k] = sr[i] - g; | |
| 279 | 15206400 | dst[3][k] = sa[i]; | |
| 280 | 15206400 | k++; | |
| 281 | } | ||
| 282 | 43200 | sa += stride[3]; | |
| 283 | } | ||
| 284 | 86400 | k += dst_stride - width; | |
| 285 | 86400 | sg += stride[0]; | |
| 286 | 86400 | sb += stride[1]; | |
| 287 | 86400 | sr += stride[2]; | |
| 288 | } | ||
| 289 | 300 | } | |
| 290 | |||
| 291 | #undef A | ||
| 292 | #undef B | ||
| 293 | |||
| 294 | /* Write data to a plane with median prediction */ | ||
| 295 | 800 | static void median_predict(UtvideoContext *c, const uint8_t *src, uint8_t *dst, | |
| 296 | ptrdiff_t stride, int width, int height) | ||
| 297 | { | ||
| 298 | int i, j; | ||
| 299 | int A, B; | ||
| 300 | uint8_t prev; | ||
| 301 | |||
| 302 | /* First line uses left neighbour prediction */ | ||
| 303 | 800 | prev = 0x80; /* Set the initial value */ | |
| 304 |
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247200 | for (i = 0; i < width; i++) { |
| 305 | 246400 | *dst++ = src[i] - prev; | |
| 306 | 246400 | prev = src[i]; | |
| 307 | } | ||
| 308 | |||
| 309 |
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800 | if (height == 1) |
| 310 | ✗ | return; | |
| 311 | |||
| 312 | 800 | src += stride; | |
| 313 | |||
| 314 | /* | ||
| 315 | * Second line uses top prediction for the first sample, | ||
| 316 | * and median for the rest. | ||
| 317 | */ | ||
| 318 | 800 | A = B = 0; | |
| 319 | |||
| 320 | /* Rest of the coded part uses median prediction */ | ||
| 321 |
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216000 | for (j = 1; j < height; j++) { |
| 322 | 215200 | c->llvidencdsp.sub_median_pred(dst, src - stride, src, width, &A, &B); | |
| 323 | 215200 | dst += width; | |
| 324 | 215200 | src += stride; | |
| 325 | } | ||
| 326 | } | ||
| 327 | |||
| 328 | /* Count the usage of values in a plane */ | ||
| 329 | 2403 | static void count_usage(uint8_t *src, int width, | |
| 330 | int height, uint64_t *counts) | ||
| 331 | { | ||
| 332 | int i, j; | ||
| 333 | |||
| 334 |
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651683 | for (j = 0; j < height; j++) { |
| 335 |
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206281280 | for (i = 0; i < width; i++) { |
| 336 | 205632000 | counts[src[i]]++; | |
| 337 | } | ||
| 338 | 649280 | src += width; | |
| 339 | } | ||
| 340 | 2403 | } | |
| 341 | |||
| 342 | /* Calculate the actual huffman codes from the code lengths */ | ||
| 343 | 2353 | static void calculate_codes(HuffEntry *he) | |
| 344 | { | ||
| 345 | int last, i; | ||
| 346 | uint32_t code; | ||
| 347 | |||
| 348 | 2353 | qsort(he, 256, sizeof(*he), ut_huff_cmp_len); | |
| 349 | |||
| 350 | 2353 | last = 255; | |
| 351 |
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86484 | while (he[last].len == 255 && last) |
| 352 | 84131 | last--; | |
| 353 | |||
| 354 | 2353 | code = 0; | |
| 355 |
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520590 | for (i = last; i >= 0; i--) { |
| 356 | 518237 | he[i].code = code >> (32 - he[i].len); | |
| 357 | 518237 | code += 0x80000000u >> (he[i].len - 1); | |
| 358 | } | ||
| 359 | |||
| 360 | 2353 | qsort(he, 256, sizeof(*he), huff_cmp_sym); | |
| 361 | 2353 | } | |
| 362 | |||
| 363 | /* Write huffman bit codes to a memory block */ | ||
| 364 | 2356 | static int write_huff_codes(uint8_t *src, uint8_t *dst, int dst_size, | |
| 365 | int width, int height, HuffEntry *he) | ||
| 366 | { | ||
| 367 | PutBitContext pb; | ||
| 368 | int i, j; | ||
| 369 | int count; | ||
| 370 | |||
| 371 | 2356 | init_put_bits(&pb, dst, dst_size); | |
| 372 | |||
| 373 | /* Write the codes */ | ||
| 374 |
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637236 | for (j = 0; j < height; j++) { |
| 375 |
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201198080 | for (i = 0; i < width; i++) |
| 376 | 200563200 | put_bits(&pb, he[src[i]].len, he[src[i]].code); | |
| 377 | |||
| 378 | 634880 | src += width; | |
| 379 | } | ||
| 380 | |||
| 381 | /* Pad output to a 32-bit boundary */ | ||
| 382 | 2356 | count = put_bits_count(&pb) & 0x1F; | |
| 383 | |||
| 384 |
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2356 | if (count) |
| 385 | 2176 | put_bits(&pb, 32 - count, 0); | |
| 386 | |||
| 387 | /* Flush the rest with zeroes */ | ||
| 388 | 2356 | flush_put_bits(&pb); | |
| 389 | |||
| 390 | /* Return the amount of bytes written */ | ||
| 391 | 2356 | return put_bytes_output(&pb); | |
| 392 | } | ||
| 393 | |||
| 394 | 2403 | static int encode_plane(AVCodecContext *avctx, const uint8_t *src, | |
| 395 | uint8_t *dst, ptrdiff_t stride, int plane_no, | ||
| 396 | int width, int height, PutByteContext *pb) | ||
| 397 | { | ||
| 398 | 2403 | UtvideoContext *c = avctx->priv_data; | |
| 399 | uint8_t lengths[256]; | ||
| 400 | 2403 | uint64_t counts[256] = { 0 }; | |
| 401 | |||
| 402 | HuffEntry he[256]; | ||
| 403 | |||
| 404 | 2403 | uint32_t offset = 0, slice_len = 0; | |
| 405 |
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2403 | const int cmask = ~(!plane_no && avctx->pix_fmt == AV_PIX_FMT_YUV420P); |
| 406 | 2403 | int i, sstart, send = 0; | |
| 407 | int symbol; | ||
| 408 | int ret; | ||
| 409 | |||
| 410 | /* Do prediction / make planes */ | ||
| 411 |
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2403 | switch (c->frame_pred) { |
| 412 | 800 | case PRED_NONE: | |
| 413 |
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1600 | for (i = 0; i < c->slices; i++) { |
| 414 | 800 | sstart = send; | |
| 415 | 800 | send = height * (i + 1) / c->slices & cmask; | |
| 416 | 800 | av_image_copy_plane(dst + sstart * width, width, | |
| 417 | 800 | src + sstart * stride, stride, | |
| 418 | width, send - sstart); | ||
| 419 | } | ||
| 420 | 800 | break; | |
| 421 | 803 | case PRED_LEFT: | |
| 422 |
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1609 | for (i = 0; i < c->slices; i++) { |
| 423 | 806 | sstart = send; | |
| 424 | 806 | send = height * (i + 1) / c->slices & cmask; | |
| 425 | 806 | c->llvidencdsp.sub_left_predict(dst + sstart * width, src + sstart * stride, stride, width, send - sstart); | |
| 426 | } | ||
| 427 | 803 | break; | |
| 428 | 800 | case PRED_MEDIAN: | |
| 429 |
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1600 | for (i = 0; i < c->slices; i++) { |
| 430 | 800 | sstart = send; | |
| 431 | 800 | send = height * (i + 1) / c->slices & cmask; | |
| 432 | 800 | median_predict(c, src + sstart * stride, dst + sstart * width, | |
| 433 | stride, width, send - sstart); | ||
| 434 | } | ||
| 435 | 800 | break; | |
| 436 | ✗ | default: | |
| 437 | ✗ | av_log(avctx, AV_LOG_ERROR, "Unknown prediction mode: %d\n", | |
| 438 | c->frame_pred); | ||
| 439 | ✗ | return AVERROR_OPTION_NOT_FOUND; | |
| 440 | } | ||
| 441 | |||
| 442 | /* Count the usage of values */ | ||
| 443 | 2403 | count_usage(dst, width, height, counts); | |
| 444 | |||
| 445 | /* Check for a special case where only one symbol was used */ | ||
| 446 |
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16843 | for (symbol = 0; symbol < 256; symbol++) { |
| 447 | /* If non-zero count is found, see if it matches width * height */ | ||
| 448 |
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16843 | if (counts[symbol]) { |
| 449 | /* Special case if only one symbol was used */ | ||
| 450 |
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2403 | if (counts[symbol] == width * (int64_t)height) { |
| 451 | /* | ||
| 452 | * Write a zero for the single symbol | ||
| 453 | * used in the plane, else 0xFF. | ||
| 454 | */ | ||
| 455 |
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12850 | for (i = 0; i < 256; i++) { |
| 456 |
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12800 | if (i == symbol) |
| 457 | 50 | bytestream2_put_byte(pb, 0); | |
| 458 | else | ||
| 459 | 12750 | bytestream2_put_byte(pb, 0xFF); | |
| 460 | } | ||
| 461 | |||
| 462 | /* Write zeroes for lengths */ | ||
| 463 |
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100 | for (i = 0; i < c->slices; i++) |
| 464 | 50 | bytestream2_put_le32(pb, 0); | |
| 465 | |||
| 466 | /* And that's all for that plane folks */ | ||
| 467 | 50 | return 0; | |
| 468 | } | ||
| 469 | 2353 | break; | |
| 470 | } | ||
| 471 | } | ||
| 472 | |||
| 473 | /* Calculate huffman lengths */ | ||
| 474 |
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2353 | if ((ret = ff_huff_gen_len_table(lengths, counts, 256, 1)) < 0) |
| 475 | ✗ | return ret; | |
| 476 | |||
| 477 | /* | ||
| 478 | * Write the plane's header into the output packet: | ||
| 479 | * - huffman code lengths (256 bytes) | ||
| 480 | * - slice end offsets (gotten from the slice lengths) | ||
| 481 | */ | ||
| 482 |
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604721 | for (i = 0; i < 256; i++) { |
| 483 | 602368 | bytestream2_put_byte(pb, lengths[i]); | |
| 484 | |||
| 485 | 602368 | he[i].len = lengths[i]; | |
| 486 | 602368 | he[i].sym = i; | |
| 487 | } | ||
| 488 | |||
| 489 | /* Calculate the huffman codes themselves */ | ||
| 490 | 2353 | calculate_codes(he); | |
| 491 | |||
| 492 | 2353 | send = 0; | |
| 493 |
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4709 | for (i = 0; i < c->slices; i++) { |
| 494 | 2356 | sstart = send; | |
| 495 | 2356 | send = height * (i + 1) / c->slices & cmask; | |
| 496 | |||
| 497 | /* | ||
| 498 | * Write the huffman codes to a buffer, | ||
| 499 | * get the offset in bytes. | ||
| 500 | */ | ||
| 501 | 4712 | offset += write_huff_codes(dst + sstart * width, c->slice_bits, | |
| 502 | 2356 | width * height + 4, width, | |
| 503 | send - sstart, he); | ||
| 504 | |||
| 505 | 2356 | slice_len = offset - slice_len; | |
| 506 | |||
| 507 | /* Byteswap the written huffman codes */ | ||
| 508 | 2356 | c->bdsp.bswap_buf((uint32_t *) c->slice_bits, | |
| 509 | 2356 | (uint32_t *) c->slice_bits, | |
| 510 | 2356 | slice_len >> 2); | |
| 511 | |||
| 512 | /* Write the offset to the stream */ | ||
| 513 | 2356 | bytestream2_put_le32(pb, offset); | |
| 514 | |||
| 515 | /* Seek to the data part of the packet */ | ||
| 516 | 2356 | bytestream2_seek_p(pb, 4 * (c->slices - i - 1) + | |
| 517 | 2356 | offset - slice_len, SEEK_CUR); | |
| 518 | |||
| 519 | /* Write the slices' data into the output packet */ | ||
| 520 | 2356 | bytestream2_put_buffer(pb, c->slice_bits, slice_len); | |
| 521 | |||
| 522 | /* Seek back to the slice offsets */ | ||
| 523 | 2356 | bytestream2_seek_p(pb, -4 * (c->slices - i - 1) - offset, | |
| 524 | SEEK_CUR); | ||
| 525 | |||
| 526 | 2356 | slice_len = offset; | |
| 527 | } | ||
| 528 | |||
| 529 | /* And at the end seek to the end of written slice(s) */ | ||
| 530 | 2353 | bytestream2_seek_p(pb, offset, SEEK_CUR); | |
| 531 | |||
| 532 | 2353 | return 0; | |
| 533 | } | ||
| 534 | |||
| 535 | 751 | static int utvideo_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| 536 | const AVFrame *pic, int *got_packet) | ||
| 537 | { | ||
| 538 | 751 | UtvideoContext *c = avctx->priv_data; | |
| 539 | PutByteContext pb; | ||
| 540 | |||
| 541 | uint32_t frame_info; | ||
| 542 | |||
| 543 | uint8_t *dst; | ||
| 544 | |||
| 545 | 751 | int width = avctx->width, height = avctx->height; | |
| 546 | 751 | int i, ret = 0; | |
| 547 | |||
| 548 | /* Allocate a new packet if needed, and set it to the pointer dst */ | ||
| 549 | 751 | ret = ff_alloc_packet(avctx, pkt, (256 + 4 * c->slices + width * height) | |
| 550 | 751 | * c->planes + 4); | |
| 551 | |||
| 552 |
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751 | if (ret < 0) |
| 553 | ✗ | return ret; | |
| 554 | |||
| 555 | 751 | dst = pkt->data; | |
| 556 | |||
| 557 | 751 | bytestream2_init_writer(&pb, dst, pkt->size); | |
| 558 | |||
| 559 | 751 | av_fast_padded_malloc(&c->slice_bits, &c->slice_bits_size, width * height + 4); | |
| 560 | |||
| 561 |
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751 | if (!c->slice_bits) { |
| 562 | ✗ | av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer 2.\n"); | |
| 563 | ✗ | return AVERROR(ENOMEM); | |
| 564 | } | ||
| 565 | |||
| 566 | /* In case of RGB, mangle the planes to Ut Video's format */ | ||
| 567 |
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751 | if (avctx->pix_fmt == AV_PIX_FMT_GBRAP || avctx->pix_fmt == AV_PIX_FMT_GBRP) |
| 568 | 300 | mangle_rgb_planes(c->slice_buffer, c->slice_stride, pic->data, | |
| 569 | 300 | c->planes, pic->linesize, width, height); | |
| 570 | |||
| 571 | /* Deal with the planes */ | ||
| 572 |
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751 | switch (avctx->pix_fmt) { |
| 573 | 300 | case AV_PIX_FMT_GBRP: | |
| 574 | case AV_PIX_FMT_GBRAP: | ||
| 575 |
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1350 | for (i = 0; i < c->planes; i++) { |
| 576 | 1050 | ret = encode_plane(avctx, c->slice_buffer[i] + 2 * c->slice_stride, | |
| 577 | c->slice_buffer[i], c->slice_stride, i, | ||
| 578 | width, height, &pb); | ||
| 579 | |||
| 580 |
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1050 | if (ret) { |
| 581 | ✗ | av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i); | |
| 582 | ✗ | return ret; | |
| 583 | } | ||
| 584 | } | ||
| 585 | 300 | break; | |
| 586 | 150 | case AV_PIX_FMT_YUV444P: | |
| 587 |
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600 | for (i = 0; i < c->planes; i++) { |
| 588 | 450 | ret = encode_plane(avctx, pic->data[i], c->slice_buffer[0], | |
| 589 | 450 | pic->linesize[i], i, width, height, &pb); | |
| 590 | |||
| 591 |
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450 | if (ret) { |
| 592 | ✗ | av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i); | |
| 593 | ✗ | return ret; | |
| 594 | } | ||
| 595 | } | ||
| 596 | 150 | break; | |
| 597 | 150 | case AV_PIX_FMT_YUV422P: | |
| 598 |
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600 | for (i = 0; i < c->planes; i++) { |
| 599 | 450 | ret = encode_plane(avctx, pic->data[i], c->slice_buffer[0], | |
| 600 | 450 | pic->linesize[i], i, width >> !!i, height, &pb); | |
| 601 | |||
| 602 |
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450 | if (ret) { |
| 603 | ✗ | av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i); | |
| 604 | ✗ | return ret; | |
| 605 | } | ||
| 606 | } | ||
| 607 | 150 | break; | |
| 608 | 151 | case AV_PIX_FMT_YUV420P: | |
| 609 |
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604 | for (i = 0; i < c->planes; i++) { |
| 610 | 453 | ret = encode_plane(avctx, pic->data[i], c->slice_buffer[0], | |
| 611 | 453 | pic->linesize[i], i, width >> !!i, height >> !!i, | |
| 612 | &pb); | ||
| 613 | |||
| 614 |
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453 | if (ret) { |
| 615 | ✗ | av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i); | |
| 616 | ✗ | return ret; | |
| 617 | } | ||
| 618 | } | ||
| 619 | 151 | break; | |
| 620 | ✗ | default: | |
| 621 | ✗ | av_log(avctx, AV_LOG_ERROR, "Unknown pixel format: %d\n", | |
| 622 | ✗ | avctx->pix_fmt); | |
| 623 | ✗ | return AVERROR_INVALIDDATA; | |
| 624 | } | ||
| 625 | |||
| 626 | /* | ||
| 627 | * Write frame information (LE 32-bit unsigned) | ||
| 628 | * into the output packet. | ||
| 629 | * Contains the prediction method. | ||
| 630 | */ | ||
| 631 | 751 | frame_info = c->frame_pred << 8; | |
| 632 | 751 | bytestream2_put_le32(&pb, frame_info); | |
| 633 | |||
| 634 | 751 | pkt->size = bytestream2_tell_p(&pb); | |
| 635 | |||
| 636 | /* Packet should be done */ | ||
| 637 | 751 | *got_packet = 1; | |
| 638 | |||
| 639 | 751 | return 0; | |
| 640 | } | ||
| 641 | |||
| 642 | #define OFFSET(x) offsetof(UtvideoContext, x) | ||
| 643 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM | ||
| 644 | static const AVOption options[] = { | ||
| 645 | { "pred", "Prediction method", OFFSET(frame_pred), AV_OPT_TYPE_INT, { .i64 = PRED_LEFT }, PRED_NONE, PRED_MEDIAN, VE, .unit = "pred" }, | ||
| 646 | { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_NONE }, INT_MIN, INT_MAX, VE, .unit = "pred" }, | ||
| 647 | { "left", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_LEFT }, INT_MIN, INT_MAX, VE, .unit = "pred" }, | ||
| 648 | { "median", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_MEDIAN }, INT_MIN, INT_MAX, VE, .unit = "pred" }, | ||
| 649 | |||
| 650 | { NULL}, | ||
| 651 | }; | ||
| 652 | |||
| 653 | static const AVClass utvideo_class = { | ||
| 654 | .class_name = "utvideo", | ||
| 655 | .item_name = av_default_item_name, | ||
| 656 | .option = options, | ||
| 657 | .version = LIBAVUTIL_VERSION_INT, | ||
| 658 | }; | ||
| 659 | |||
| 660 | const FFCodec ff_utvideo_encoder = { | ||
| 661 | .p.name = "utvideo", | ||
| 662 | CODEC_LONG_NAME("Ut Video"), | ||
| 663 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 664 | .p.id = AV_CODEC_ID_UTVIDEO, | ||
| 665 | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS | | ||
| 666 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | ||
| 667 | .priv_data_size = sizeof(UtvideoContext), | ||
| 668 | .p.priv_class = &utvideo_class, | ||
| 669 | .init = utvideo_encode_init, | ||
| 670 | FF_CODEC_ENCODE_CB(utvideo_encode_frame), | ||
| 671 | .close = utvideo_encode_close, | ||
| 672 | CODEC_PIXFMTS(AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, | ||
| 673 | AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P), | ||
| 674 | .color_ranges = AVCOL_RANGE_MPEG, | ||
| 675 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
| 676 | }; | ||
| 677 |