| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Flash Screen Video Version 2 encoder | ||
| 3 | * Copyright (C) 2009 Joshua Warner | ||
| 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 | * Flash Screen Video Version 2 encoder | ||
| 25 | * @author Joshua Warner | ||
| 26 | */ | ||
| 27 | |||
| 28 | /* Differences from version 1 stream: | ||
| 29 | * NOTE: Currently, the only player that supports version 2 streams is Adobe Flash Player itself. | ||
| 30 | * * Supports sending only a range of scanlines in a block, | ||
| 31 | * indicating a difference from the corresponding block in the last keyframe. | ||
| 32 | * * Supports initializing the zlib dictionary with data from the corresponding | ||
| 33 | * block in the last keyframe, to improve compression. | ||
| 34 | * * Supports a hybrid 15-bit rgb / 7-bit palette color space. | ||
| 35 | */ | ||
| 36 | |||
| 37 | /* TODO: | ||
| 38 | * Don't keep Block structures for both current frame and keyframe. | ||
| 39 | * Make better heuristics for deciding stream parameters (optimum_* functions). Currently these return constants. | ||
| 40 | * Figure out how to encode palette information in the stream, choose an optimum palette at each keyframe. | ||
| 41 | * Figure out how the zlibPrimeCompressCurrent flag works, implement support. | ||
| 42 | * Find other sample files (that weren't generated here), develop a decoder. | ||
| 43 | */ | ||
| 44 | |||
| 45 | #include <stdio.h> | ||
| 46 | #include <stdlib.h> | ||
| 47 | #include <zlib.h> | ||
| 48 | |||
| 49 | #include "libavutil/imgutils.h" | ||
| 50 | #include "libavutil/mem.h" | ||
| 51 | #include "avcodec.h" | ||
| 52 | #include "codec_internal.h" | ||
| 53 | #include "encode.h" | ||
| 54 | #include "put_bits.h" | ||
| 55 | #include "zlib_wrapper.h" | ||
| 56 | |||
| 57 | #define HAS_IFRAME_IMAGE 0x02 | ||
| 58 | #define HAS_PALLET_INFO 0x01 | ||
| 59 | |||
| 60 | #define COLORSPACE_BGR 0x00 | ||
| 61 | #define COLORSPACE_15_7 0x10 | ||
| 62 | #define HAS_DIFF_BLOCKS 0x04 | ||
| 63 | #define ZLIB_PRIME_COMPRESS_CURRENT 0x02 | ||
| 64 | #define ZLIB_PRIME_COMPRESS_PREVIOUS 0x01 | ||
| 65 | |||
| 66 | // Disables experimental "smart" parameter-choosing code, as well as the statistics that it depends on. | ||
| 67 | // At the moment, the "smart" code is a great example of how the parameters *shouldn't* be chosen. | ||
| 68 | #define FLASHSV2_DUMB | ||
| 69 | |||
| 70 | typedef struct Block { | ||
| 71 | uint8_t *enc; | ||
| 72 | uint8_t *sl_begin, *sl_end; | ||
| 73 | int enc_size; | ||
| 74 | uint8_t *data; | ||
| 75 | unsigned long data_size; | ||
| 76 | |||
| 77 | uint8_t start, len; | ||
| 78 | uint8_t dirty; | ||
| 79 | uint8_t col, row, width, height; | ||
| 80 | uint8_t flags; | ||
| 81 | } Block; | ||
| 82 | |||
| 83 | typedef struct Palette { | ||
| 84 | unsigned colors[128]; | ||
| 85 | uint8_t index[1 << 15]; | ||
| 86 | } Palette; | ||
| 87 | |||
| 88 | typedef struct FlashSV2Context { | ||
| 89 | AVCodecContext *avctx; | ||
| 90 | uint8_t *current_frame; | ||
| 91 | uint8_t *key_frame; | ||
| 92 | uint8_t *encbuffer; | ||
| 93 | uint8_t *keybuffer; | ||
| 94 | uint8_t *databuffer; | ||
| 95 | |||
| 96 | uint8_t *blockbuffer; | ||
| 97 | int blockbuffer_size; | ||
| 98 | |||
| 99 | Block *frame_blocks; | ||
| 100 | Block *key_blocks; | ||
| 101 | int frame_size; | ||
| 102 | int blocks_size; | ||
| 103 | |||
| 104 | int use15_7, dist, comp; | ||
| 105 | |||
| 106 | int rows, cols; | ||
| 107 | |||
| 108 | int64_t last_key_frame; | ||
| 109 | |||
| 110 | int image_width, image_height; | ||
| 111 | int block_width, block_height; | ||
| 112 | uint8_t flags; | ||
| 113 | uint8_t use_custom_palette; | ||
| 114 | uint8_t palette_type; ///< 0=>default, 1=>custom - changed when palette regenerated. | ||
| 115 | Palette palette; | ||
| 116 | FFZStream zstream; | ||
| 117 | #ifndef FLASHSV2_DUMB | ||
| 118 | double tot_blocks; ///< blocks encoded since last keyframe | ||
| 119 | double diff_blocks; ///< blocks that were different since last keyframe | ||
| 120 | double tot_lines; ///< total scanlines in image since last keyframe | ||
| 121 | double diff_lines; ///< scanlines that were different since last keyframe | ||
| 122 | double raw_size; ///< size of raw frames since last keyframe | ||
| 123 | double comp_size; ///< size of compressed data since last keyframe | ||
| 124 | double uncomp_size; ///< size of uncompressed data since last keyframe | ||
| 125 | |||
| 126 | double total_bits; ///< total bits written to stream so far | ||
| 127 | #endif | ||
| 128 | } FlashSV2Context; | ||
| 129 | |||
| 130 | 4 | static av_cold void cleanup(FlashSV2Context * s) | |
| 131 | { | ||
| 132 | 4 | av_freep(&s->encbuffer); | |
| 133 | 4 | av_freep(&s->keybuffer); | |
| 134 | 4 | av_freep(&s->databuffer); | |
| 135 | 4 | av_freep(&s->blockbuffer); | |
| 136 | 4 | av_freep(&s->current_frame); | |
| 137 | 4 | av_freep(&s->key_frame); | |
| 138 | |||
| 139 | 4 | av_freep(&s->frame_blocks); | |
| 140 | 4 | av_freep(&s->key_blocks); | |
| 141 | 4 | ff_deflate_end(&s->zstream); | |
| 142 | 4 | } | |
| 143 | |||
| 144 | 8 | static void init_blocks(FlashSV2Context * s, Block * blocks, | |
| 145 | uint8_t * encbuf, uint8_t * databuf) | ||
| 146 | { | ||
| 147 | int row, col; | ||
| 148 | Block *b; | ||
| 149 | 8 | memset(blocks, 0, s->cols * s->rows * sizeof(*blocks)); | |
| 150 |
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46 | for (col = 0; col < s->cols; col++) { |
| 151 |
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220 | for (row = 0; row < s->rows; row++) { |
| 152 | 182 | b = blocks + (col + row * s->cols); | |
| 153 |
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182 | b->width = (col < s->cols - 1) ? |
| 154 | 150 | s->block_width : | |
| 155 | 32 | s->image_width - col * s->block_width; | |
| 156 | |||
| 157 |
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182 | b->height = (row < s->rows - 1) ? |
| 158 | 144 | s->block_height : | |
| 159 | 38 | s->image_height - row * s->block_height; | |
| 160 | |||
| 161 | 182 | b->row = row; | |
| 162 | 182 | b->col = col; | |
| 163 | 182 | b->enc = encbuf; | |
| 164 | 182 | b->data = databuf; | |
| 165 | 182 | encbuf += b->width * b->height * 3; | |
| 166 |
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182 | databuf = databuf ? databuf + b->width * b->height * 6 : NULL; |
| 167 | } | ||
| 168 | } | ||
| 169 | 8 | } | |
| 170 | |||
| 171 | 24 | static void reset_stats(FlashSV2Context * s) | |
| 172 | { | ||
| 173 | #ifndef FLASHSV2_DUMB | ||
| 174 | s->diff_blocks = 0.1; | ||
| 175 | s->tot_blocks = 1; | ||
| 176 | s->diff_lines = 0.1; | ||
| 177 | s->tot_lines = 1; | ||
| 178 | s->raw_size = s->comp_size = s->uncomp_size = 10; | ||
| 179 | #endif | ||
| 180 | 24 | } | |
| 181 | |||
| 182 | 4 | static int update_block_dimensions(FlashSV2Context *s, int block_width, int block_height) | |
| 183 | { | ||
| 184 | 4 | s->block_width = block_width; | |
| 185 | 4 | s->block_height = block_height; | |
| 186 | 4 | s->rows = (s->image_height + s->block_height - 1) / s->block_height; | |
| 187 | 4 | s->cols = (s->image_width + s->block_width - 1) / s->block_width; | |
| 188 |
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4 | if (s->rows * s->cols > s->blocks_size / sizeof(Block)) { |
| 189 | 4 | s->frame_blocks = av_realloc_array(s->frame_blocks, s->rows, s->cols * sizeof(Block)); | |
| 190 | 4 | s->key_blocks = av_realloc_array(s->key_blocks, s->cols, s->rows * sizeof(Block)); | |
| 191 |
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4 | if (!s->frame_blocks || !s->key_blocks) { |
| 192 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "Memory allocation failed.\n"); | |
| 193 | ✗ | return AVERROR(ENOMEM); | |
| 194 | } | ||
| 195 | 4 | s->blocks_size = s->rows * s->cols * sizeof(Block); | |
| 196 | } | ||
| 197 | 4 | init_blocks(s, s->frame_blocks, s->encbuffer, s->databuffer); | |
| 198 | 4 | init_blocks(s, s->key_blocks, s->keybuffer, 0); | |
| 199 | |||
| 200 | 4 | av_fast_malloc(&s->blockbuffer, &s->blockbuffer_size, block_width * block_height * 6); | |
| 201 |
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4 | if (!s->blockbuffer) { |
| 202 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "Could not allocate block buffer.\n"); | |
| 203 | ✗ | return AVERROR(ENOMEM); | |
| 204 | } | ||
| 205 | 4 | return 0; | |
| 206 | } | ||
| 207 | |||
| 208 | |||
| 209 | 4 | static av_cold int flashsv2_encode_init(AVCodecContext * avctx) | |
| 210 | { | ||
| 211 | 4 | FlashSV2Context *s = avctx->priv_data; | |
| 212 | int ret; | ||
| 213 | |||
| 214 | 4 | s->avctx = avctx; | |
| 215 | |||
| 216 | 4 | s->comp = avctx->compression_level; | |
| 217 |
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4 | if (s->comp == -1) |
| 218 | ✗ | s->comp = 9; | |
| 219 |
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4 | if (s->comp < 0 || s->comp > 9) { |
| 220 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 221 | "Compression level should be 0-9, not %d\n", s->comp); | ||
| 222 | ✗ | return AVERROR(EINVAL); | |
| 223 | } | ||
| 224 | |||
| 225 | |||
| 226 |
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4 | if ((avctx->width > 4095) || (avctx->height > 4095)) { |
| 227 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 228 | "Input dimensions too large, input must be max 4095x4095 !\n"); | ||
| 229 | ✗ | return AVERROR(EINVAL); | |
| 230 | } | ||
| 231 |
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4 | if ((avctx->width < 16) || (avctx->height < 16)) { |
| 232 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
| 233 | "Input dimensions too small, input must be at least 16x16 !\n"); | ||
| 234 | ✗ | return AVERROR(EINVAL); | |
| 235 | } | ||
| 236 | |||
| 237 |
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4 | if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0) |
| 238 | ✗ | return ret; | |
| 239 | |||
| 240 | 4 | ret = ff_deflate_init(&s->zstream, s->comp, avctx); | |
| 241 |
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4 | if (ret < 0) |
| 242 | ✗ | return ret; | |
| 243 | 4 | s->last_key_frame = 0; | |
| 244 | |||
| 245 | 4 | s->image_width = avctx->width; | |
| 246 | 4 | s->image_height = avctx->height; | |
| 247 | |||
| 248 | 4 | s->frame_size = s->image_width * s->image_height * 3; | |
| 249 | |||
| 250 | 4 | s->encbuffer = av_mallocz(s->frame_size); | |
| 251 | 4 | s->keybuffer = av_mallocz(s->frame_size); | |
| 252 | 4 | s->databuffer = av_mallocz(s->frame_size * 6); | |
| 253 | 4 | s->current_frame = av_mallocz(s->frame_size); | |
| 254 | 4 | s->key_frame = av_mallocz(s->frame_size); | |
| 255 |
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4 | if (!s->encbuffer || !s->keybuffer || !s->databuffer |
| 256 |
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4 | || !s->current_frame || !s->key_frame) { |
| 257 | ✗ | av_log(avctx, AV_LOG_ERROR, "Memory allocation failed.\n"); | |
| 258 | ✗ | return AVERROR(ENOMEM); | |
| 259 | } | ||
| 260 | |||
| 261 | 4 | reset_stats(s); | |
| 262 | #ifndef FLASHSV2_DUMB | ||
| 263 | s->total_bits = 1; | ||
| 264 | #endif | ||
| 265 | |||
| 266 | 4 | s->use_custom_palette = 0; | |
| 267 | 4 | s->palette_type = -1; // so that the palette will be generated in reconfigure_at_keyframe | |
| 268 | |||
| 269 | 4 | return update_block_dimensions(s, 64, 64); | |
| 270 | } | ||
| 271 | |||
| 272 | 20 | static int new_key_frame(FlashSV2Context * s) | |
| 273 | { | ||
| 274 | int i; | ||
| 275 | 20 | memcpy(s->key_blocks, s->frame_blocks, s->blocks_size); | |
| 276 | 20 | memcpy(s->key_frame, s->current_frame, s->frame_size); | |
| 277 | |||
| 278 |
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475 | for (i = 0; i < s->rows * s->cols; i++) { |
| 279 | 455 | s->key_blocks[i].enc += (s->keybuffer - s->encbuffer); | |
| 280 | 455 | s->key_blocks[i].sl_begin = 0; | |
| 281 | 455 | s->key_blocks[i].sl_end = 0; | |
| 282 | 455 | s->key_blocks[i].data = 0; | |
| 283 | } | ||
| 284 | 20 | memcpy(s->keybuffer, s->encbuffer, s->frame_size); | |
| 285 | |||
| 286 | 20 | return 0; | |
| 287 | } | ||
| 288 | |||
| 289 | ✗ | static int write_palette(FlashSV2Context * s, uint8_t * buf, int buf_size) | |
| 290 | { | ||
| 291 | //this isn't implemented yet! Default palette only! | ||
| 292 | ✗ | return -1; | |
| 293 | } | ||
| 294 | |||
| 295 | 200 | static int write_header(FlashSV2Context * s, uint8_t * buf, int buf_size) | |
| 296 | { | ||
| 297 | PutBitContext pb; | ||
| 298 | int buf_pos, len; | ||
| 299 | |||
| 300 |
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200 | if (buf_size < 5) |
| 301 | ✗ | return -1; | |
| 302 | |||
| 303 | 200 | init_put_bits(&pb, buf, buf_size); | |
| 304 | |||
| 305 | 200 | put_bits(&pb, 4, (s->block_width >> 4) - 1); | |
| 306 | 200 | put_bits(&pb, 12, s->image_width); | |
| 307 | 200 | put_bits(&pb, 4, (s->block_height >> 4) - 1); | |
| 308 | 200 | put_bits(&pb, 12, s->image_height); | |
| 309 | |||
| 310 | 200 | flush_put_bits(&pb); | |
| 311 | 200 | buf_pos = 4; | |
| 312 | |||
| 313 | 200 | buf[buf_pos++] = s->flags; | |
| 314 | |||
| 315 |
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200 | if (s->flags & HAS_PALLET_INFO) { |
| 316 | ✗ | len = write_palette(s, buf + buf_pos, buf_size - buf_pos); | |
| 317 | ✗ | if (len < 0) | |
| 318 | ✗ | return -1; | |
| 319 | ✗ | buf_pos += len; | |
| 320 | } | ||
| 321 | |||
| 322 | 200 | return buf_pos; | |
| 323 | } | ||
| 324 | |||
| 325 | 4550 | static int write_block(Block * b, uint8_t * buf, int buf_size) | |
| 326 | { | ||
| 327 | 4550 | int buf_pos = 0; | |
| 328 | 4550 | unsigned block_size = b->data_size; | |
| 329 | |||
| 330 |
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4550 | if (b->flags & HAS_DIFF_BLOCKS) |
| 331 | ✗ | block_size += 2; | |
| 332 |
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4550 | if (b->flags & ZLIB_PRIME_COMPRESS_CURRENT) |
| 333 | ✗ | block_size += 2; | |
| 334 |
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4550 | if (block_size > 0) |
| 335 | 4550 | block_size += 1; | |
| 336 |
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4550 | if (buf_size < block_size + 2) |
| 337 | ✗ | return -1; | |
| 338 | |||
| 339 | 4550 | buf[buf_pos++] = block_size >> 8; | |
| 340 | 4550 | buf[buf_pos++] = block_size; | |
| 341 | |||
| 342 |
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4550 | if (block_size == 0) |
| 343 | ✗ | return buf_pos; | |
| 344 | |||
| 345 | 4550 | buf[buf_pos++] = b->flags; | |
| 346 | |||
| 347 |
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4550 | if (b->flags & HAS_DIFF_BLOCKS) { |
| 348 | ✗ | buf[buf_pos++] = (b->start); | |
| 349 | ✗ | buf[buf_pos++] = (b->len); | |
| 350 | } | ||
| 351 | |||
| 352 |
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4550 | if (b->flags & ZLIB_PRIME_COMPRESS_CURRENT) { |
| 353 | //This feature of the format is poorly understood, and as of now, unused. | ||
| 354 | ✗ | buf[buf_pos++] = (b->col); | |
| 355 | ✗ | buf[buf_pos++] = (b->row); | |
| 356 | } | ||
| 357 | |||
| 358 | 4550 | memcpy(buf + buf_pos, b->data, b->data_size); | |
| 359 | |||
| 360 | 4550 | buf_pos += b->data_size; | |
| 361 | |||
| 362 | 4550 | return buf_pos; | |
| 363 | } | ||
| 364 | |||
| 365 | 4550 | static int encode_zlib(Block *b, uint8_t *buf, unsigned long *buf_size, | |
| 366 | z_stream *zstream) | ||
| 367 | { | ||
| 368 | int res; | ||
| 369 | |||
| 370 |
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4550 | if (deflateReset(zstream) != Z_OK) |
| 371 | ✗ | return AVERROR_EXTERNAL; | |
| 372 | 4550 | zstream->next_out = buf; | |
| 373 | 4550 | zstream->avail_out = *buf_size; | |
| 374 | 4550 | zstream->next_in = b->sl_begin; | |
| 375 | 4550 | zstream->avail_in = b->sl_end - b->sl_begin; | |
| 376 | 4550 | res = deflate(zstream, Z_FINISH); | |
| 377 |
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4550 | if (res != Z_STREAM_END) |
| 378 | ✗ | return AVERROR_EXTERNAL; | |
| 379 | 4550 | *buf_size -= zstream->avail_out; | |
| 380 | 4550 | return 0; | |
| 381 | } | ||
| 382 | |||
| 383 | 4095 | static int encode_zlibprime(Block * b, Block * prime, uint8_t * buf, | |
| 384 | int *buf_size, z_stream *zstream) | ||
| 385 | { | ||
| 386 | int res; | ||
| 387 | |||
| 388 |
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4095 | if (deflateReset(zstream) != Z_OK) |
| 389 | ✗ | return AVERROR_EXTERNAL; | |
| 390 | 4095 | zstream->next_in = prime->enc; | |
| 391 | 4095 | zstream->avail_in = prime->enc_size; | |
| 392 |
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8190 | while (zstream->avail_in > 0) { |
| 393 | 4095 | zstream->next_out = buf; | |
| 394 | 4095 | zstream->avail_out = *buf_size; | |
| 395 | 4095 | res = deflate(zstream, Z_SYNC_FLUSH); | |
| 396 |
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4095 | if (res < 0) |
| 397 | ✗ | return -1; | |
| 398 | } | ||
| 399 | |||
| 400 | 4095 | zstream->next_in = b->sl_begin; | |
| 401 | 4095 | zstream->avail_in = b->sl_end - b->sl_begin; | |
| 402 | 4095 | zstream->next_out = buf; | |
| 403 | 4095 | zstream->avail_out = *buf_size; | |
| 404 | 4095 | res = deflate(zstream, Z_FINISH); | |
| 405 | 4095 | *buf_size -= zstream->avail_out; | |
| 406 |
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4095 | if (res != Z_STREAM_END) |
| 407 | ✗ | return -1; | |
| 408 | 4095 | return 0; | |
| 409 | } | ||
| 410 | |||
| 411 | ✗ | static int encode_bgr(Block * b, const uint8_t * src, int stride) | |
| 412 | { | ||
| 413 | int i; | ||
| 414 | ✗ | uint8_t *ptr = b->enc; | |
| 415 | ✗ | for (i = 0; i < b->start; i++) | |
| 416 | ✗ | memcpy(ptr + i * b->width * 3, src + i * stride, b->width * 3); | |
| 417 | ✗ | b->sl_begin = ptr + i * b->width * 3; | |
| 418 | ✗ | for (; i < b->start + b->len; i++) | |
| 419 | ✗ | memcpy(ptr + i * b->width * 3, src + i * stride, b->width * 3); | |
| 420 | ✗ | b->sl_end = ptr + i * b->width * 3; | |
| 421 | ✗ | for (; i < b->height; i++) | |
| 422 | ✗ | memcpy(ptr + i * b->width * 3, src + i * stride, b->width * 3); | |
| 423 | ✗ | b->enc_size = ptr + i * b->width * 3 - b->enc; | |
| 424 | ✗ | return b->enc_size; | |
| 425 | } | ||
| 426 | |||
| 427 | 15264200 | static inline unsigned pixel_color15(const uint8_t * src) | |
| 428 | { | ||
| 429 | 15264200 | return (src[0] >> 3) | ((src[1] & 0xf8) << 2) | ((src[2] & 0xf8) << 7); | |
| 430 | } | ||
| 431 | |||
| 432 | 47305616 | static inline unsigned int chroma_diff(unsigned int c1, unsigned int c2) | |
| 433 | { | ||
| 434 | #define ABSDIFF(a,b) (abs((int)(a)-(int)(b))) | ||
| 435 | |||
| 436 | 47305616 | unsigned int t1 = (c1 & 0x000000ff) + ((c1 & 0x0000ff00) >> 8) + ((c1 & 0x00ff0000) >> 16); | |
| 437 | 47305616 | unsigned int t2 = (c2 & 0x000000ff) + ((c2 & 0x0000ff00) >> 8) + ((c2 & 0x00ff0000) >> 16); | |
| 438 | |||
| 439 | 47305616 | return ABSDIFF(t1, t2) + ABSDIFF(c1 & 0x000000ff, c2 & 0x000000ff) + | |
| 440 | 94611232 | ABSDIFF((c1 & 0x0000ff00) >> 8 , (c2 & 0x0000ff00) >> 8) + | |
| 441 | 47305616 | ABSDIFF((c1 & 0x00ff0000) >> 16, (c2 & 0x00ff0000) >> 16); | |
| 442 | } | ||
| 443 | |||
| 444 | 15264200 | static inline int pixel_color7_fast(Palette * palette, unsigned c15) | |
| 445 | { | ||
| 446 | 15264200 | return palette->index[c15]; | |
| 447 | } | ||
| 448 | |||
| 449 | 131072 | static int pixel_color7_slow(Palette * palette, unsigned color) | |
| 450 | { | ||
| 451 | 131072 | int i, min = 0x7fffffff; | |
| 452 | 131072 | int minc = -1; | |
| 453 |
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16908288 | for (i = 0; i < 128; i++) { |
| 454 | 16777216 | int c1 = palette->colors[i]; | |
| 455 | 16777216 | int diff = chroma_diff(c1, color); | |
| 456 |
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16777216 | if (diff < min) { |
| 457 | 813324 | min = diff; | |
| 458 | 813324 | minc = i; | |
| 459 | } | ||
| 460 | } | ||
| 461 | 131072 | return minc; | |
| 462 | } | ||
| 463 | |||
| 464 | 15264200 | static inline unsigned pixel_bgr(const uint8_t * src) | |
| 465 | { | ||
| 466 | 15264200 | return (src[0]) | (src[1] << 8) | (src[2] << 16); | |
| 467 | } | ||
| 468 | |||
| 469 | 15264200 | static int write_pixel_15_7(Palette * palette, uint8_t * dest, const uint8_t * src, | |
| 470 | int dist) | ||
| 471 | { | ||
| 472 | 15264200 | unsigned c15 = pixel_color15(src); | |
| 473 | 15264200 | unsigned color = pixel_bgr(src); | |
| 474 | 15264200 | int d15 = chroma_diff(color, color & 0x00f8f8f8); | |
| 475 | 15264200 | int c7 = pixel_color7_fast(palette, c15); | |
| 476 | 15264200 | int d7 = chroma_diff(color, palette->colors[c7]); | |
| 477 |
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15264200 | if (dist + d15 >= d7) { |
| 478 | 3161177 | dest[0] = c7; | |
| 479 | 3161177 | return 1; | |
| 480 | } else { | ||
| 481 | 12103023 | dest[0] = 0x80 | (c15 >> 8); | |
| 482 | 12103023 | dest[1] = c15 & 0xff; | |
| 483 | 12103023 | return 2; | |
| 484 | } | ||
| 485 | } | ||
| 486 | |||
| 487 | 4 | static int update_palette_index(Palette * palette) | |
| 488 | { | ||
| 489 | int r, g, b; | ||
| 490 | unsigned int bgr, c15, index; | ||
| 491 |
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132 | for (r = 4; r < 256; r += 8) { |
| 492 |
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4224 | for (g = 4; g < 256; g += 8) { |
| 493 |
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135168 | for (b = 4; b < 256; b += 8) { |
| 494 | 131072 | bgr = b | (g << 8) | (r << 16); | |
| 495 | 131072 | c15 = (b >> 3) | ((g & 0xf8) << 2) | ((r & 0xf8) << 7); | |
| 496 | 131072 | index = pixel_color7_slow(palette, bgr); | |
| 497 | |||
| 498 | 131072 | palette->index[c15] = index; | |
| 499 | } | ||
| 500 | } | ||
| 501 | } | ||
| 502 | 4 | return 0; | |
| 503 | } | ||
| 504 | |||
| 505 | static const unsigned int default_screen_video_v2_palette[128] = { | ||
| 506 | 0x00000000, 0x00333333, 0x00666666, 0x00999999, 0x00CCCCCC, 0x00FFFFFF, | ||
| 507 | 0x00330000, 0x00660000, 0x00990000, 0x00CC0000, 0x00FF0000, 0x00003300, | ||
| 508 | 0x00006600, 0x00009900, 0x0000CC00, 0x0000FF00, 0x00000033, 0x00000066, | ||
| 509 | 0x00000099, 0x000000CC, 0x000000FF, 0x00333300, 0x00666600, 0x00999900, | ||
| 510 | 0x00CCCC00, 0x00FFFF00, 0x00003333, 0x00006666, 0x00009999, 0x0000CCCC, | ||
| 511 | 0x0000FFFF, 0x00330033, 0x00660066, 0x00990099, 0x00CC00CC, 0x00FF00FF, | ||
| 512 | 0x00FFFF33, 0x00FFFF66, 0x00FFFF99, 0x00FFFFCC, 0x00FF33FF, 0x00FF66FF, | ||
| 513 | 0x00FF99FF, 0x00FFCCFF, 0x0033FFFF, 0x0066FFFF, 0x0099FFFF, 0x00CCFFFF, | ||
| 514 | 0x00CCCC33, 0x00CCCC66, 0x00CCCC99, 0x00CCCCFF, 0x00CC33CC, 0x00CC66CC, | ||
| 515 | 0x00CC99CC, 0x00CCFFCC, 0x0033CCCC, 0x0066CCCC, 0x0099CCCC, 0x00FFCCCC, | ||
| 516 | 0x00999933, 0x00999966, 0x009999CC, 0x009999FF, 0x00993399, 0x00996699, | ||
| 517 | 0x0099CC99, 0x0099FF99, 0x00339999, 0x00669999, 0x00CC9999, 0x00FF9999, | ||
| 518 | 0x00666633, 0x00666699, 0x006666CC, 0x006666FF, 0x00663366, 0x00669966, | ||
| 519 | 0x0066CC66, 0x0066FF66, 0x00336666, 0x00996666, 0x00CC6666, 0x00FF6666, | ||
| 520 | 0x00333366, 0x00333399, 0x003333CC, 0x003333FF, 0x00336633, 0x00339933, | ||
| 521 | 0x0033CC33, 0x0033FF33, 0x00663333, 0x00993333, 0x00CC3333, 0x00FF3333, | ||
| 522 | 0x00003366, 0x00336600, 0x00660033, 0x00006633, 0x00330066, 0x00663300, | ||
| 523 | 0x00336699, 0x00669933, 0x00993366, 0x00339966, 0x00663399, 0x00996633, | ||
| 524 | 0x006699CC, 0x0099CC66, 0x00CC6699, 0x0066CC99, 0x009966CC, 0x00CC9966, | ||
| 525 | 0x0099CCFF, 0x00CCFF99, 0x00FF99CC, 0x0099FFCC, 0x00CC99FF, 0x00FFCC99, | ||
| 526 | 0x00111111, 0x00222222, 0x00444444, 0x00555555, 0x00AAAAAA, 0x00BBBBBB, | ||
| 527 | 0x00DDDDDD, 0x00EEEEEE | ||
| 528 | }; | ||
| 529 | |||
| 530 | 4 | static int generate_default_palette(Palette * palette) | |
| 531 | { | ||
| 532 | 4 | memcpy(palette->colors, default_screen_video_v2_palette, | |
| 533 | sizeof(default_screen_video_v2_palette)); | ||
| 534 | |||
| 535 | 4 | return update_palette_index(palette); | |
| 536 | } | ||
| 537 | |||
| 538 | ✗ | static int generate_optimum_palette(Palette * palette, const uint8_t * image, | |
| 539 | int width, int height, int stride) | ||
| 540 | { | ||
| 541 | //this isn't implemented yet! Default palette only! | ||
| 542 | ✗ | return -1; | |
| 543 | } | ||
| 544 | |||
| 545 | 260900 | static inline int encode_15_7_sl(Palette * palette, uint8_t * dest, | |
| 546 | const uint8_t * src, int width, int dist) | ||
| 547 | { | ||
| 548 | 260900 | int len = 0, x; | |
| 549 |
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15525100 | for (x = 0; x < width; x++) { |
| 550 | 15264200 | len += write_pixel_15_7(palette, dest + len, src + 3 * x, dist); | |
| 551 | } | ||
| 552 | 260900 | return len; | |
| 553 | } | ||
| 554 | |||
| 555 | 4550 | static int encode_15_7(Palette * palette, Block * b, const uint8_t * src, | |
| 556 | int stride, int dist) | ||
| 557 | { | ||
| 558 | int i; | ||
| 559 | 4550 | uint8_t *ptr = b->enc; | |
| 560 |
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4550 | for (i = 0; i < b->start; i++) |
| 561 | ✗ | ptr += encode_15_7_sl(palette, ptr, src + i * stride, b->width, dist); | |
| 562 | 4550 | b->sl_begin = ptr; | |
| 563 |
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265450 | for (; i < b->start + b->len; i++) |
| 564 | 260900 | ptr += encode_15_7_sl(palette, ptr, src + i * stride, b->width, dist); | |
| 565 | 4550 | b->sl_end = ptr; | |
| 566 |
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4550 | for (; i < b->height; i++) |
| 567 | ✗ | ptr += encode_15_7_sl(palette, ptr, src + i * stride, b->width, dist); | |
| 568 | 4550 | b->enc_size = ptr - b->enc; | |
| 569 | 4550 | return b->enc_size; | |
| 570 | } | ||
| 571 | |||
| 572 | 4550 | static int encode_block(FlashSV2Context *s, Palette * palette, Block * b, | |
| 573 | Block *prev, const uint8_t *src, int stride, | ||
| 574 | int dist, int keyframe) | ||
| 575 | { | ||
| 576 | 4550 | unsigned buf_size = b->width * b->height * 6; | |
| 577 | 4550 | uint8_t *buf = s->blockbuffer; | |
| 578 | int res; | ||
| 579 | |||
| 580 |
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4550 | if (b->flags & COLORSPACE_15_7) { |
| 581 | 4550 | encode_15_7(palette, b, src, stride, dist); | |
| 582 | } else { | ||
| 583 | ✗ | encode_bgr(b, src, stride); | |
| 584 | } | ||
| 585 | |||
| 586 |
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4550 | if (b->len > 0) { |
| 587 | 4550 | b->data_size = buf_size; | |
| 588 | 4550 | res = encode_zlib(b, b->data, &b->data_size, &s->zstream.zstream); | |
| 589 |
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4550 | if (res) |
| 590 | ✗ | return res; | |
| 591 | |||
| 592 |
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4550 | if (!keyframe) { |
| 593 | 4095 | res = encode_zlibprime(b, prev, buf, &buf_size, &s->zstream.zstream); | |
| 594 |
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4095 | if (res) |
| 595 | ✗ | return res; | |
| 596 | |||
| 597 |
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4095 | if (buf_size < b->data_size) { |
| 598 | 4095 | b->data_size = buf_size; | |
| 599 | 4095 | memcpy(b->data, buf, buf_size); | |
| 600 | 4095 | b->flags |= ZLIB_PRIME_COMPRESS_PREVIOUS; | |
| 601 | } | ||
| 602 | } | ||
| 603 | } else { | ||
| 604 | ✗ | b->data_size = 0; | |
| 605 | } | ||
| 606 | 4550 | return 0; | |
| 607 | } | ||
| 608 | |||
| 609 | 260900 | static int compare_sl(FlashSV2Context * s, Block * b, const uint8_t * src, | |
| 610 | uint8_t * frame, uint8_t * key, int y, int keyframe) | ||
| 611 | { | ||
| 612 |
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260900 | if (memcmp(src, frame, b->width * 3) != 0) { |
| 613 | 260900 | b->dirty = 1; | |
| 614 | 260900 | memcpy(frame, src, b->width * 3); | |
| 615 | #ifndef FLASHSV2_DUMB | ||
| 616 | s->diff_lines++; | ||
| 617 | #endif | ||
| 618 | } | ||
| 619 |
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260900 | if (memcmp(src, key, b->width * 3) != 0) { |
| 620 |
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260900 | if (b->len == 0) |
| 621 | 4550 | b->start = y; | |
| 622 | 260900 | b->len = y + 1 - b->start; | |
| 623 | } | ||
| 624 | 260900 | return 0; | |
| 625 | } | ||
| 626 | |||
| 627 | 200 | static int mark_all_blocks(FlashSV2Context * s, const uint8_t * src, int stride, | |
| 628 | int keyframe) | ||
| 629 | { | ||
| 630 | int sl, rsl, col, pos, possl; | ||
| 631 | Block *b; | ||
| 632 |
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45100 | for (sl = s->image_height - 1; sl >= 0; sl--) { |
| 633 |
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305800 | for (col = 0; col < s->cols; col++) { |
| 634 | 260900 | rsl = s->image_height - sl - 1; | |
| 635 | 260900 | b = s->frame_blocks + col + rsl / s->block_height * s->cols; | |
| 636 | 260900 | possl = stride * sl + col * s->block_width * 3; | |
| 637 | 260900 | pos = s->image_width * rsl * 3 + col * s->block_width * 3; | |
| 638 | 260900 | compare_sl(s, b, src + possl, s->current_frame + pos, | |
| 639 | 260900 | s->key_frame + pos, rsl % s->block_height, keyframe); | |
| 640 | } | ||
| 641 | } | ||
| 642 | #ifndef FLASHSV2_DUMB | ||
| 643 | s->tot_lines += s->image_height * s->cols; | ||
| 644 | #endif | ||
| 645 | 200 | return 0; | |
| 646 | } | ||
| 647 | |||
| 648 | 200 | static int encode_all_blocks(FlashSV2Context * s, int keyframe) | |
| 649 | { | ||
| 650 | int row, col, res; | ||
| 651 | uint8_t *data; | ||
| 652 | Block *b, *prev; | ||
| 653 |
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1000 | for (row = 0; row < s->rows; row++) { |
| 654 |
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5350 | for (col = 0; col < s->cols; col++) { |
| 655 | 4550 | b = s->frame_blocks + (row * s->cols + col); | |
| 656 | 4550 | prev = s->key_blocks + (row * s->cols + col); | |
| 657 |
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4550 | b->flags = s->use15_7 ? COLORSPACE_15_7 : 0; |
| 658 |
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4550 | if (keyframe) { |
| 659 | 455 | b->start = 0; | |
| 660 | 455 | b->len = b->height; | |
| 661 |
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4095 | } else if (!b->dirty) { |
| 662 | ✗ | b->start = 0; | |
| 663 | ✗ | b->len = 0; | |
| 664 | ✗ | b->data_size = 0; | |
| 665 | ✗ | continue; | |
| 666 |
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4095 | } else if (b->start != 0 || b->len != b->height) { |
| 667 | ✗ | b->flags |= HAS_DIFF_BLOCKS; | |
| 668 | } | ||
| 669 | 4550 | data = s->current_frame + s->image_width * 3 * s->block_height * row + s->block_width * col * 3; | |
| 670 | 4550 | res = encode_block(s, &s->palette, b, prev, data, | |
| 671 | 4550 | s->image_width * 3, s->dist, keyframe); | |
| 672 | #ifndef FLASHSV2_DUMB | ||
| 673 | if (b->dirty) | ||
| 674 | s->diff_blocks++; | ||
| 675 | s->comp_size += b->data_size; | ||
| 676 | s->uncomp_size += b->enc_size; | ||
| 677 | #endif | ||
| 678 |
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4550 | if (res) |
| 679 | ✗ | return res; | |
| 680 | } | ||
| 681 | } | ||
| 682 | #ifndef FLASHSV2_DUMB | ||
| 683 | s->raw_size += s->image_width * s->image_height * 3; | ||
| 684 | s->tot_blocks += s->rows * s->cols; | ||
| 685 | #endif | ||
| 686 | 200 | return 0; | |
| 687 | } | ||
| 688 | |||
| 689 | 200 | static int write_all_blocks(FlashSV2Context * s, uint8_t * buf, | |
| 690 | int buf_size) | ||
| 691 | { | ||
| 692 | 200 | int row, col, buf_pos = 0, len; | |
| 693 | Block *b; | ||
| 694 |
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1000 | for (row = 0; row < s->rows; row++) { |
| 695 |
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5350 | for (col = 0; col < s->cols; col++) { |
| 696 | 4550 | b = s->frame_blocks + row * s->cols + col; | |
| 697 | 4550 | len = write_block(b, buf + buf_pos, buf_size - buf_pos); | |
| 698 | 4550 | b->start = b->len = b->dirty = 0; | |
| 699 |
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4550 | if (len < 0) |
| 700 | ✗ | return len; | |
| 701 | 4550 | buf_pos += len; | |
| 702 | } | ||
| 703 | } | ||
| 704 | 200 | return buf_pos; | |
| 705 | } | ||
| 706 | |||
| 707 | 200 | static int write_bitstream(FlashSV2Context * s, const uint8_t * src, int stride, | |
| 708 | uint8_t * buf, int buf_size, int keyframe) | ||
| 709 | { | ||
| 710 | int buf_pos, res; | ||
| 711 | |||
| 712 | 200 | res = mark_all_blocks(s, src, stride, keyframe); | |
| 713 |
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200 | if (res) |
| 714 | ✗ | return res; | |
| 715 | 200 | res = encode_all_blocks(s, keyframe); | |
| 716 |
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200 | if (res) |
| 717 | ✗ | return res; | |
| 718 | |||
| 719 | 200 | res = write_header(s, buf, buf_size); | |
| 720 |
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200 | if (res < 0) { |
| 721 | ✗ | return res; | |
| 722 | } else { | ||
| 723 | 200 | buf_pos = res; | |
| 724 | } | ||
| 725 | 200 | res = write_all_blocks(s, buf + buf_pos, buf_size - buf_pos); | |
| 726 |
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200 | if (res < 0) |
| 727 | ✗ | return res; | |
| 728 | 200 | buf_pos += res; | |
| 729 | #ifndef FLASHSV2_DUMB | ||
| 730 | s->total_bits += ((double) buf_pos) * 8.0; | ||
| 731 | #endif | ||
| 732 | |||
| 733 | 200 | return buf_pos; | |
| 734 | } | ||
| 735 | |||
| 736 | ✗ | static void recommend_keyframe(FlashSV2Context * s, int *keyframe) | |
| 737 | { | ||
| 738 | #ifndef FLASHSV2_DUMB | ||
| 739 | double block_ratio, line_ratio, enc_ratio, comp_ratio, data_ratio; | ||
| 740 | if (s->avctx->gop_size > 0) { | ||
| 741 | block_ratio = s->diff_blocks / s->tot_blocks; | ||
| 742 | line_ratio = s->diff_lines / s->tot_lines; | ||
| 743 | enc_ratio = s->uncomp_size / s->raw_size; | ||
| 744 | comp_ratio = s->comp_size / s->uncomp_size; | ||
| 745 | data_ratio = s->comp_size / s->raw_size; | ||
| 746 | |||
| 747 | if ((block_ratio >= 0.5 && line_ratio / block_ratio <= 0.5) || line_ratio >= 0.95) { | ||
| 748 | *keyframe = 1; | ||
| 749 | return; | ||
| 750 | } | ||
| 751 | } | ||
| 752 | #else | ||
| 753 | ✗ | return; | |
| 754 | #endif | ||
| 755 | } | ||
| 756 | |||
| 757 | #ifndef FLASHSV2_DUMB | ||
| 758 | static const double block_size_fraction = 1.0 / 300; | ||
| 759 | static const double use15_7_threshold = 8192; | ||
| 760 | static const double color15_7_factor = 100; | ||
| 761 | #endif | ||
| 762 | 20 | static int optimum_block_width(FlashSV2Context * s) | |
| 763 | { | ||
| 764 | #ifndef FLASHSV2_DUMB | ||
| 765 | double save = (1-pow(s->diff_lines/s->diff_blocks/s->block_height, 0.5)) * s->comp_size/s->tot_blocks; | ||
| 766 | double width = block_size_fraction * sqrt(0.5 * save * s->rows * s->cols) * s->image_width; | ||
| 767 | int pwidth = ((int) width); | ||
| 768 | return FFCLIP(pwidth & ~15, 256, 16); | ||
| 769 | #else | ||
| 770 | 20 | return 64; | |
| 771 | #endif | ||
| 772 | } | ||
| 773 | |||
| 774 | 20 | static int optimum_block_height(FlashSV2Context * s) | |
| 775 | { | ||
| 776 | #ifndef FLASHSV2_DUMB | ||
| 777 | double save = (1-pow(s->diff_lines/s->diff_blocks/s->block_height, 0.5)) * s->comp_size/s->tot_blocks; | ||
| 778 | double height = block_size_fraction * sqrt(0.5 * save * s->rows * s->cols) * s->image_height; | ||
| 779 | int pheight = ((int) height); | ||
| 780 | return FFCLIP(pheight & ~15, 256, 16); | ||
| 781 | #else | ||
| 782 | 20 | return 64; | |
| 783 | #endif | ||
| 784 | } | ||
| 785 | |||
| 786 | 20 | static int optimum_use15_7(FlashSV2Context * s) | |
| 787 | { | ||
| 788 | #ifndef FLASHSV2_DUMB | ||
| 789 | double ideal = ((double)(s->avctx->bit_rate * s->avctx->time_base.den)) / | ||
| 790 | ((double) s->avctx->time_base.num) * s->avctx->frame_num; | ||
| 791 | if (ideal + use15_7_threshold < s->total_bits) { | ||
| 792 | return 1; | ||
| 793 | } else { | ||
| 794 | return 0; | ||
| 795 | } | ||
| 796 | #else | ||
| 797 | 20 | return s->avctx->global_quality == 0; | |
| 798 | #endif | ||
| 799 | } | ||
| 800 | |||
| 801 | 200 | static int optimum_dist(FlashSV2Context * s) | |
| 802 | { | ||
| 803 | #ifndef FLASHSV2_DUMB | ||
| 804 | double ideal = | ||
| 805 | s->avctx->bit_rate * s->avctx->time_base.den; | ||
| 806 | int dist = pow((s->total_bits / ideal) * color15_7_factor, 3); | ||
| 807 | av_log(s->avctx, AV_LOG_DEBUG, "dist: %d\n", dist); | ||
| 808 | return dist; | ||
| 809 | #else | ||
| 810 | 200 | return 15; | |
| 811 | #endif | ||
| 812 | } | ||
| 813 | |||
| 814 | |||
| 815 | 20 | static int reconfigure_at_keyframe(FlashSV2Context * s, const uint8_t * image, | |
| 816 | int stride) | ||
| 817 | { | ||
| 818 | 20 | int update_palette = 0; | |
| 819 | int res; | ||
| 820 | 20 | int block_width = optimum_block_width (s); | |
| 821 | 20 | int block_height = optimum_block_height(s); | |
| 822 | |||
| 823 |
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20 | if (block_width != s->block_width || block_height != s->block_height) { |
| 824 | ✗ | res = update_block_dimensions(s, block_width, block_height); | |
| 825 | ✗ | if (res < 0) | |
| 826 | ✗ | return res; | |
| 827 | } | ||
| 828 | |||
| 829 | 20 | s->use15_7 = optimum_use15_7(s); | |
| 830 |
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20 | if (s->use15_7) { |
| 831 |
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20 | if ((s->use_custom_palette && s->palette_type != 1) || update_palette) { |
| 832 | ✗ | res = generate_optimum_palette(&s->palette, image, s->image_width, s->image_height, stride); | |
| 833 | ✗ | if (res) | |
| 834 | ✗ | return res; | |
| 835 | ✗ | s->palette_type = 1; | |
| 836 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, "Generated optimum palette\n"); | |
| 837 |
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20 | } else if (!s->use_custom_palette && s->palette_type != 0) { |
| 838 | 4 | res = generate_default_palette(&s->palette); | |
| 839 |
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4 | if (res) |
| 840 | ✗ | return res; | |
| 841 | 4 | s->palette_type = 0; | |
| 842 | 4 | av_log(s->avctx, AV_LOG_DEBUG, "Generated default palette\n"); | |
| 843 | } | ||
| 844 | } | ||
| 845 | |||
| 846 | |||
| 847 | 20 | reset_stats(s); | |
| 848 | |||
| 849 | 20 | return 0; | |
| 850 | } | ||
| 851 | |||
| 852 | 200 | static int flashsv2_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| 853 | const AVFrame *p, int *got_packet) | ||
| 854 | { | ||
| 855 | 200 | FlashSV2Context *const s = avctx->priv_data; | |
| 856 | int res; | ||
| 857 | 200 | int keyframe = 0; | |
| 858 | |||
| 859 |
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200 | if ((res = ff_alloc_packet(avctx, pkt, s->frame_size + FF_INPUT_BUFFER_MIN_SIZE)) < 0) |
| 860 | ✗ | return res; | |
| 861 | |||
| 862 | /* First frame needs to be a keyframe */ | ||
| 863 |
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200 | if (avctx->frame_num == 0) |
| 864 | 4 | keyframe = 1; | |
| 865 | |||
| 866 | /* Check the placement of keyframes */ | ||
| 867 |
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200 | if (avctx->gop_size > 0) { |
| 868 |
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200 | if (avctx->frame_num >= s->last_key_frame + avctx->gop_size) |
| 869 | 16 | keyframe = 1; | |
| 870 | } | ||
| 871 | |||
| 872 |
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200 | if (!keyframe |
| 873 |
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180 | && avctx->frame_num > s->last_key_frame + avctx->keyint_min) { |
| 874 | ✗ | recommend_keyframe(s, &keyframe); | |
| 875 | ✗ | if (keyframe) | |
| 876 | ✗ | av_log(avctx, AV_LOG_DEBUG, "Recommending key frame at frame %"PRId64"\n", avctx->frame_num); | |
| 877 | } | ||
| 878 | |||
| 879 |
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200 | if (keyframe) { |
| 880 | 20 | res = reconfigure_at_keyframe(s, p->data[0], p->linesize[0]); | |
| 881 |
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20 | if (res) |
| 882 | ✗ | return res; | |
| 883 | } | ||
| 884 | |||
| 885 |
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200 | if (s->use15_7) |
| 886 | 200 | s->dist = optimum_dist(s); | |
| 887 | |||
| 888 | 200 | res = write_bitstream(s, p->data[0], p->linesize[0], pkt->data, pkt->size, keyframe); | |
| 889 | |||
| 890 |
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200 | if (keyframe) { |
| 891 | 20 | new_key_frame(s); | |
| 892 | 20 | s->last_key_frame = avctx->frame_num; | |
| 893 | 20 | pkt->flags |= AV_PKT_FLAG_KEY; | |
| 894 | 20 | av_log(avctx, AV_LOG_DEBUG, "Inserting key frame at frame %"PRId64"\n", avctx->frame_num); | |
| 895 | } | ||
| 896 | |||
| 897 | 200 | pkt->size = res; | |
| 898 | 200 | *got_packet = 1; | |
| 899 | |||
| 900 | 200 | return 0; | |
| 901 | } | ||
| 902 | |||
| 903 | 4 | static av_cold int flashsv2_encode_end(AVCodecContext * avctx) | |
| 904 | { | ||
| 905 | 4 | FlashSV2Context *s = avctx->priv_data; | |
| 906 | |||
| 907 | 4 | cleanup(s); | |
| 908 | |||
| 909 | 4 | return 0; | |
| 910 | } | ||
| 911 | |||
| 912 | const FFCodec ff_flashsv2_encoder = { | ||
| 913 | .p.name = "flashsv2", | ||
| 914 | CODEC_LONG_NAME("Flash Screen Video Version 2"), | ||
| 915 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 916 | .p.id = AV_CODEC_ID_FLASHSV2, | ||
| 917 | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | ||
| 918 | .priv_data_size = sizeof(FlashSV2Context), | ||
| 919 | .init = flashsv2_encode_init, | ||
| 920 | FF_CODEC_ENCODE_CB(flashsv2_encode_frame), | ||
| 921 | .close = flashsv2_encode_end, | ||
| 922 | CODEC_PIXFMTS(AV_PIX_FMT_BGR24), | ||
| 923 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
| 924 | }; | ||
| 925 |