4 * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 * FF Video Codec 1 (a lossless codec) decoder
28 #include "libavutil/avassert.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/timer.h"
37 #include "rangecoder.h"
42 static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
45 if (get_rac(c, state + 0))
51 while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
54 return AVERROR_INVALIDDATA;
58 for (i = e - 1; i >= 0; i--)
59 a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
61 e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
66 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
68 return get_symbol_inline(c, state, is_signed);
71 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
78 while (i < state->error_sum) { // FIXME: optimize
83 v = get_sr_golomb(gb, k, 12, bits);
84 ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
85 v, state->bias, state->error_sum, state->drift, state->count, k);
87 v ^= ((2 * state->drift + state->count) >> 31);
89 ret = fold(v + state->bias, bits);
91 update_vlc_state(state, v);
97 #define RENAME(name) name
98 #include "ffv1dec_template.c"
103 #define RENAME(name) name ## 32
104 #include "ffv1dec_template.c"
106 static void decode_plane(FFV1Context *s, uint8_t *src,
107 int w, int h, int stride, int plane_index,
112 sample[0] = s->sample_buffer + 3;
113 sample[1] = s->sample_buffer + w + 6 + 3;
117 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
119 for (y = 0; y < h; y++) {
120 int16_t *temp = sample[0]; // FIXME: try a normal buffer
122 sample[0] = sample[1];
125 sample[1][-1] = sample[0][0];
126 sample[0][w] = sample[0][w - 1];
129 if (s->avctx->bits_per_raw_sample <= 8) {
130 decode_line(s, w, sample, plane_index, 8);
131 for (x = 0; x < w; x++)
132 src[x*pixel_stride + stride * y] = sample[1][x];
134 decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
135 if (s->packed_at_lsb) {
136 for (x = 0; x < w; x++) {
137 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
140 for (x = 0; x < w; x++) {
141 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample) | ((uint16_t **)sample)[1][x] >> (2 * s->avctx->bits_per_raw_sample - 16);
145 // STOP_TIMER("decode-line") }
149 static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
151 RangeCoder *c = &fs->c;
152 uint8_t state[CONTEXT_SIZE];
153 unsigned ps, i, context_count;
154 memset(state, 128, sizeof(state));
156 av_assert0(f->version > 2);
158 fs->slice_x = get_symbol(c, state, 0) * f->width ;
159 fs->slice_y = get_symbol(c, state, 0) * f->height;
160 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
161 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
163 fs->slice_x /= f->num_h_slices;
164 fs->slice_y /= f->num_v_slices;
165 fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
166 fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
167 if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
169 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
170 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
173 for (i = 0; i < f->plane_count; i++) {
174 PlaneContext * const p = &fs->plane[i];
175 int idx = get_symbol(c, state, 0);
176 if (idx >= (unsigned)f->quant_table_count) {
177 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
180 p->quant_table_index = idx;
181 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
182 context_count = f->context_count[idx];
184 if (p->context_count < context_count) {
186 av_freep(&p->vlc_state);
188 p->context_count = context_count;
191 ps = get_symbol(c, state, 0);
193 f->cur->interlaced_frame = 1;
194 f->cur->top_field_first = 1;
195 } else if (ps == 2) {
196 f->cur->interlaced_frame = 1;
197 f->cur->top_field_first = 0;
198 } else if (ps == 3) {
199 f->cur->interlaced_frame = 0;
201 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
202 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
204 if (av_image_check_sar(f->width, f->height,
205 f->cur->sample_aspect_ratio) < 0) {
206 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
207 f->cur->sample_aspect_ratio.num,
208 f->cur->sample_aspect_ratio.den);
209 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
212 if (fs->version > 3) {
213 fs->slice_reset_contexts = get_rac(c, state);
214 fs->slice_coding_mode = get_symbol(c, state, 0);
215 if (fs->slice_coding_mode != 1) {
216 fs->slice_rct_by_coef = get_symbol(c, state, 0);
217 fs->slice_rct_ry_coef = get_symbol(c, state, 0);
218 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
219 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
220 return AVERROR_INVALIDDATA;
228 static int decode_slice(AVCodecContext *c, void *arg)
230 FFV1Context *fs = *(void **)arg;
231 FFV1Context *f = fs->avctx->priv_data;
232 int width, height, x, y, ret;
233 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
234 AVFrame * const p = f->cur;
237 for( si=0; fs != f->slice_context[si]; si ++)
240 if(f->fsrc && !p->key_frame)
241 ff_thread_await_progress(&f->last_picture, si, 0);
243 if(f->fsrc && !p->key_frame) {
244 FFV1Context *fssrc = f->fsrc->slice_context[si];
245 FFV1Context *fsdst = f->slice_context[si];
246 av_assert1(fsdst->plane_count == fssrc->plane_count);
247 av_assert1(fsdst == fs);
250 fsdst->slice_damaged |= fssrc->slice_damaged;
252 for (i = 0; i < f->plane_count; i++) {
253 PlaneContext *psrc = &fssrc->plane[i];
254 PlaneContext *pdst = &fsdst->plane[i];
256 av_free(pdst->state);
257 av_free(pdst->vlc_state);
258 memcpy(pdst, psrc, sizeof(*pdst));
260 pdst->vlc_state = NULL;
263 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
264 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
266 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
267 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
272 fs->slice_rct_by_coef = 1;
273 fs->slice_rct_ry_coef = 1;
275 if (f->version > 2) {
276 if (ff_ffv1_init_slice_state(f, fs) < 0)
277 return AVERROR(ENOMEM);
278 if (decode_slice_header(f, fs) < 0) {
279 fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
280 fs->slice_damaged = 1;
281 return AVERROR_INVALIDDATA;
284 if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
286 if (f->cur->key_frame || fs->slice_reset_contexts)
287 ff_ffv1_clear_slice_state(f, fs);
289 width = fs->slice_width;
290 height = fs->slice_height;
294 if (fs->ac == AC_GOLOMB_RICE) {
295 if (f->version == 3 && f->micro_version > 1 || f->version > 3)
296 get_rac(&fs->c, (uint8_t[]) { 129 });
297 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
298 init_get_bits(&fs->gb,
299 fs->c.bytestream_start + fs->ac_byte_count,
300 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
303 av_assert1(width && height);
304 if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
305 const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
306 const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
307 const int cx = x >> f->chroma_h_shift;
308 const int cy = y >> f->chroma_v_shift;
309 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
311 if (f->chroma_planes) {
312 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
313 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
315 if (fs->transparency)
316 decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1);
317 } else if (f->colorspace == 0) {
318 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
319 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
320 } else if (f->use32bit) {
321 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
322 p->data[1] + ps * x + y * p->linesize[1],
323 p->data[2] + ps * x + y * p->linesize[2] };
324 decode_rgb_frame32(fs, planes, width, height, p->linesize);
326 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
327 p->data[1] + ps * x + y * p->linesize[1],
328 p->data[2] + ps * x + y * p->linesize[2] };
329 decode_rgb_frame(fs, planes, width, height, p->linesize);
331 if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
333 get_rac(&fs->c, (uint8_t[]) { 129 });
334 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
336 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
337 fs->slice_damaged = 1;
343 ff_thread_report_progress(&f->picture, si, 0);
348 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
352 uint8_t state[CONTEXT_SIZE];
354 memset(state, 128, sizeof(state));
356 for (v = 0; i < 128; v++) {
357 unsigned len = get_symbol(c, state, 0) + 1;
359 if (len > 128 - i || !len)
360 return AVERROR_INVALIDDATA;
363 quant_table[i] = scale * v;
368 for (i = 1; i < 128; i++)
369 quant_table[256 - i] = -quant_table[i];
370 quant_table[128] = -quant_table[127];
375 static int read_quant_tables(RangeCoder *c,
376 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
379 int context_count = 1;
381 for (i = 0; i < 5; i++) {
382 int ret = read_quant_table(c, quant_table[i], context_count);
385 context_count *= ret;
386 if (context_count > 32768U) {
387 return AVERROR_INVALIDDATA;
390 return (context_count + 1) / 2;
393 static int read_extra_header(FFV1Context *f)
395 RangeCoder *const c = &f->c;
396 uint8_t state[CONTEXT_SIZE];
398 uint8_t state2[32][CONTEXT_SIZE];
401 memset(state2, 128, sizeof(state2));
402 memset(state, 128, sizeof(state));
404 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
405 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
407 f->version = get_symbol(c, state, 0);
408 if (f->version < 2) {
409 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
410 return AVERROR_INVALIDDATA;
412 if (f->version > 2) {
413 c->bytestream_end -= 4;
414 f->micro_version = get_symbol(c, state, 0);
415 if (f->micro_version < 0)
416 return AVERROR_INVALIDDATA;
418 f->ac = get_symbol(c, state, 0);
420 if (f->ac == AC_RANGE_CUSTOM_TAB) {
421 for (i = 1; i < 256; i++)
422 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
425 f->colorspace = get_symbol(c, state, 0); //YUV cs type
426 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
427 f->chroma_planes = get_rac(c, state);
428 f->chroma_h_shift = get_symbol(c, state, 0);
429 f->chroma_v_shift = get_symbol(c, state, 0);
430 f->transparency = get_rac(c, state);
431 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
432 f->num_h_slices = 1 + get_symbol(c, state, 0);
433 f->num_v_slices = 1 + get_symbol(c, state, 0);
435 if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
436 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
437 f->chroma_h_shift, f->chroma_v_shift);
438 return AVERROR_INVALIDDATA;
441 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
442 f->num_v_slices > (unsigned)f->height || !f->num_v_slices
444 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
445 return AVERROR_INVALIDDATA;
448 f->quant_table_count = get_symbol(c, state, 0);
449 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
450 av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
451 f->quant_table_count = 0;
452 return AVERROR_INVALIDDATA;
455 for (i = 0; i < f->quant_table_count; i++) {
456 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
457 if (f->context_count[i] < 0) {
458 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
459 return AVERROR_INVALIDDATA;
462 if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
465 for (i = 0; i < f->quant_table_count; i++)
466 if (get_rac(c, state)) {
467 for (j = 0; j < f->context_count[i]; j++)
468 for (k = 0; k < CONTEXT_SIZE; k++) {
469 int pred = j ? f->initial_states[i][j - 1][k] : 128;
470 f->initial_states[i][j][k] =
471 (pred + get_symbol(c, state2[k], 1)) & 0xFF;
475 if (f->version > 2) {
476 f->ec = get_symbol(c, state, 0);
477 if (f->micro_version > 2)
478 f->intra = get_symbol(c, state, 0);
481 if (f->version > 2) {
483 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
484 f->avctx->extradata, f->avctx->extradata_size);
485 if (v || f->avctx->extradata_size < 4) {
486 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
487 return AVERROR_INVALIDDATA;
489 crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
492 if (f->avctx->debug & FF_DEBUG_PICT_INFO)
493 av_log(f->avctx, AV_LOG_DEBUG,
494 "global: ver:%d.%d, coder:%d, colorspace: %d bpr:%d chroma:%d(%d:%d), alpha:%d slices:%dx%d qtabs:%d ec:%d intra:%d CRC:0x%08X\n",
495 f->version, f->micro_version,
498 f->avctx->bits_per_raw_sample,
499 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
501 f->num_h_slices, f->num_v_slices,
502 f->quant_table_count,
510 static int read_header(FFV1Context *f)
512 uint8_t state[CONTEXT_SIZE];
513 int i, j, context_count = -1; //-1 to avoid warning
514 RangeCoder *const c = &f->slice_context[0]->c;
516 memset(state, 128, sizeof(state));
518 if (f->version < 2) {
519 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
520 unsigned v= get_symbol(c, state, 0);
522 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
523 return AVERROR_INVALIDDATA;
526 f->ac = get_symbol(c, state, 0);
528 if (f->ac == AC_RANGE_CUSTOM_TAB) {
529 for (i = 1; i < 256; i++)
530 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
533 colorspace = get_symbol(c, state, 0); //YUV cs type
534 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
535 chroma_planes = get_rac(c, state);
536 chroma_h_shift = get_symbol(c, state, 0);
537 chroma_v_shift = get_symbol(c, state, 0);
538 transparency = get_rac(c, state);
539 if (colorspace == 0 && f->avctx->skip_alpha)
542 if (f->plane_count) {
543 if (colorspace != f->colorspace ||
544 bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
545 chroma_planes != f->chroma_planes ||
546 chroma_h_shift != f->chroma_h_shift ||
547 chroma_v_shift != f->chroma_v_shift ||
548 transparency != f->transparency) {
549 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
550 return AVERROR_INVALIDDATA;
554 if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
555 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
556 chroma_h_shift, chroma_v_shift);
557 return AVERROR_INVALIDDATA;
560 f->colorspace = colorspace;
561 f->avctx->bits_per_raw_sample = bits_per_raw_sample;
562 f->chroma_planes = chroma_planes;
563 f->chroma_h_shift = chroma_h_shift;
564 f->chroma_v_shift = chroma_v_shift;
565 f->transparency = transparency;
567 f->plane_count = 2 + f->transparency;
570 if (f->colorspace == 0) {
571 if (!f->transparency && !f->chroma_planes) {
572 if (f->avctx->bits_per_raw_sample <= 8)
573 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
574 else if (f->avctx->bits_per_raw_sample == 10) {
575 f->packed_at_lsb = 1;
576 f->avctx->pix_fmt = AV_PIX_FMT_GRAY10;
577 } else if (f->avctx->bits_per_raw_sample == 12) {
578 f->packed_at_lsb = 1;
579 f->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
580 } else if (f->avctx->bits_per_raw_sample == 16) {
581 f->packed_at_lsb = 1;
582 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
583 } else if (f->avctx->bits_per_raw_sample < 16) {
584 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
586 return AVERROR(ENOSYS);
587 } else if (f->transparency && !f->chroma_planes) {
588 if (f->avctx->bits_per_raw_sample <= 8)
589 f->avctx->pix_fmt = AV_PIX_FMT_YA8;
591 return AVERROR(ENOSYS);
592 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
593 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
594 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
595 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
596 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
597 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
598 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
599 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
601 } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
602 switch(16*f->chroma_h_shift + f->chroma_v_shift) {
603 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
604 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
605 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
607 } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
608 f->packed_at_lsb = 1;
609 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
610 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
611 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
612 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
614 } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
615 f->packed_at_lsb = 1;
616 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
617 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
618 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
619 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
621 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
622 f->packed_at_lsb = 1;
623 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
624 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
625 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
626 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
628 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
629 f->packed_at_lsb = 1;
630 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
631 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
632 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
633 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
635 } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
636 f->packed_at_lsb = 1;
637 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
638 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
639 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
640 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
642 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
643 f->packed_at_lsb = 1;
644 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
645 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
646 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
647 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
649 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
650 f->packed_at_lsb = 1;
651 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
652 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
653 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
654 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
657 } else if (f->colorspace == 1) {
658 if (f->chroma_h_shift || f->chroma_v_shift) {
659 av_log(f->avctx, AV_LOG_ERROR,
660 "chroma subsampling not supported in this colorspace\n");
661 return AVERROR(ENOSYS);
663 if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
664 f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
665 else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
666 f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
667 else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
668 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
669 else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
670 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
671 else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
672 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
673 else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
674 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
675 else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
676 f->avctx->pix_fmt = AV_PIX_FMT_GBRP16;
680 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
681 return AVERROR(ENOSYS);
683 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
684 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
685 return AVERROR(ENOSYS);
688 ff_dlog(f->avctx, "%d %d %d\n",
689 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
690 if (f->version < 2) {
691 context_count = read_quant_tables(c, f->quant_table);
692 if (context_count < 0) {
693 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
694 return AVERROR_INVALIDDATA;
696 f->slice_count = f->max_slice_count;
697 } else if (f->version < 3) {
698 f->slice_count = get_symbol(c, state, 0);
700 const uint8_t *p = c->bytestream_end;
701 for (f->slice_count = 0;
702 f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
704 int trailer = 3 + 5*!!f->ec;
705 int size = AV_RB24(p-trailer);
706 if (size + trailer > p - c->bytestream_start)
711 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
712 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
713 return AVERROR_INVALIDDATA;
716 for (j = 0; j < f->slice_count; j++) {
717 FFV1Context *fs = f->slice_context[j];
719 fs->packed_at_lsb = f->packed_at_lsb;
721 fs->slice_damaged = 0;
723 if (f->version == 2) {
724 fs->slice_x = get_symbol(c, state, 0) * f->width ;
725 fs->slice_y = get_symbol(c, state, 0) * f->height;
726 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
727 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
729 fs->slice_x /= f->num_h_slices;
730 fs->slice_y /= f->num_v_slices;
731 fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
732 fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
733 if ((unsigned)fs->slice_width > f->width ||
734 (unsigned)fs->slice_height > f->height)
735 return AVERROR_INVALIDDATA;
736 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
737 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
738 return AVERROR_INVALIDDATA;
741 for (i = 0; i < f->plane_count; i++) {
742 PlaneContext *const p = &fs->plane[i];
744 if (f->version == 2) {
745 int idx = get_symbol(c, state, 0);
746 if (idx > (unsigned)f->quant_table_count) {
747 av_log(f->avctx, AV_LOG_ERROR,
748 "quant_table_index out of range\n");
749 return AVERROR_INVALIDDATA;
751 p->quant_table_index = idx;
752 memcpy(p->quant_table, f->quant_tables[idx],
753 sizeof(p->quant_table));
754 context_count = f->context_count[idx];
756 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
759 if (f->version <= 2) {
760 av_assert0(context_count >= 0);
761 if (p->context_count < context_count) {
763 av_freep(&p->vlc_state);
765 p->context_count = context_count;
772 static av_cold int decode_init(AVCodecContext *avctx)
774 FFV1Context *f = avctx->priv_data;
777 if ((ret = ff_ffv1_common_init(avctx)) < 0)
780 if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
783 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
786 avctx->internal->allocate_progress = 1;
791 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
793 uint8_t *buf = avpkt->data;
794 int buf_size = avpkt->size;
795 FFV1Context *f = avctx->priv_data;
796 RangeCoder *const c = &f->slice_context[0]->c;
798 uint8_t keystate = 128;
802 if (f->last_picture.f)
803 ff_thread_release_buffer(avctx, &f->last_picture);
804 FFSWAP(ThreadFrame, f->picture, f->last_picture);
806 f->cur = p = f->picture.f;
808 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
809 /* we have interlaced material flagged in container */
810 p->interlaced_frame = 1;
811 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
812 p->top_field_first = 1;
816 ff_init_range_decoder(c, buf, buf_size);
817 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
819 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
820 if (get_rac(c, &keystate)) {
823 if ((ret = read_header(f)) < 0)
827 if (!f->key_frame_ok) {
828 av_log(avctx, AV_LOG_ERROR,
829 "Cannot decode non-keyframe without valid keyframe\n");
830 return AVERROR_INVALIDDATA;
835 if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
838 if (avctx->debug & FF_DEBUG_PICT_INFO)
839 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
840 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
842 ff_thread_finish_setup(avctx);
844 buf_p = buf + buf_size;
845 for (i = f->slice_count - 1; i >= 0; i--) {
846 FFV1Context *fs = f->slice_context[i];
847 int trailer = 3 + 5*!!f->ec;
850 if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
851 else v = buf_p - c->bytestream_start;
852 if (buf_p - c->bytestream_start < v) {
853 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
854 ff_thread_report_progress(&f->picture, INT_MAX, 0);
855 return AVERROR_INVALIDDATA;
860 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
862 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
863 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
864 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
865 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
866 } else if (ts != AV_NOPTS_VALUE) {
867 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
869 av_log(f->avctx, AV_LOG_ERROR, "\n");
871 fs->slice_damaged = 1;
873 if (avctx->debug & FF_DEBUG_PICT_INFO) {
874 av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
879 ff_init_range_decoder(&fs->c, buf_p, v);
881 fs->c.bytestream_end = buf_p + v;
887 avctx->execute(avctx,
889 &f->slice_context[0],
894 for (i = f->slice_count - 1; i >= 0; i--) {
895 FFV1Context *fs = f->slice_context[i];
897 if (fs->slice_damaged && f->last_picture.f->data[0]) {
898 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
899 const uint8_t *src[4];
901 ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
902 for (j = 0; j < desc->nb_components; j++) {
903 int pixshift = desc->comp[j].depth > 8;
904 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
905 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
906 dst[j] = p->data[j] + p->linesize[j] *
907 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
908 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
909 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
912 if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
913 desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) {
915 src[1] = f->last_picture.f->data[1];
917 av_image_copy(dst, p->linesize, src,
918 f->last_picture.f->linesize,
924 ff_thread_report_progress(&f->picture, INT_MAX, 0);
928 if (f->last_picture.f)
929 ff_thread_release_buffer(avctx, &f->last_picture);
931 if ((ret = av_frame_ref(data, f->picture.f)) < 0)
940 static int init_thread_copy(AVCodecContext *avctx)
942 FFV1Context *f = avctx->priv_data;
946 f->last_picture.f = NULL;
947 f->sample_buffer = NULL;
948 f->max_slice_count = 0;
951 for (i = 0; i < f->quant_table_count; i++) {
952 av_assert0(f->version > 1);
953 f->initial_states[i] = av_memdup(f->initial_states[i],
954 f->context_count[i] * sizeof(*f->initial_states[i]));
957 f->picture.f = av_frame_alloc();
958 f->last_picture.f = av_frame_alloc();
960 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
967 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
969 fsdst->version = fsrc->version;
970 fsdst->micro_version = fsrc->micro_version;
971 fsdst->chroma_planes = fsrc->chroma_planes;
972 fsdst->chroma_h_shift = fsrc->chroma_h_shift;
973 fsdst->chroma_v_shift = fsrc->chroma_v_shift;
974 fsdst->transparency = fsrc->transparency;
975 fsdst->plane_count = fsrc->plane_count;
976 fsdst->ac = fsrc->ac;
977 fsdst->colorspace = fsrc->colorspace;
979 fsdst->ec = fsrc->ec;
980 fsdst->intra = fsrc->intra;
981 fsdst->slice_damaged = fssrc->slice_damaged;
982 fsdst->key_frame_ok = fsrc->key_frame_ok;
984 fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample;
985 fsdst->packed_at_lsb = fsrc->packed_at_lsb;
986 fsdst->slice_count = fsrc->slice_count;
987 if (fsrc->version<3){
988 fsdst->slice_x = fssrc->slice_x;
989 fsdst->slice_y = fssrc->slice_y;
990 fsdst->slice_width = fssrc->slice_width;
991 fsdst->slice_height = fssrc->slice_height;
996 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
998 FFV1Context *fsrc = src->priv_data;
999 FFV1Context *fdst = dst->priv_data;
1006 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
1007 uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1008 struct FFV1Context *slice_context[MAX_SLICES];
1009 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1010 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1012 memcpy(fdst, fsrc, sizeof(*fdst));
1013 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1014 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1015 fdst->picture = picture;
1016 fdst->last_picture = last_picture;
1017 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1018 FFV1Context *fssrc = fsrc->slice_context[i];
1019 FFV1Context *fsdst = fdst->slice_context[i];
1020 copy_fields(fsdst, fssrc, fsrc);
1022 av_assert0(!fdst->plane[0].state);
1023 av_assert0(!fdst->sample_buffer);
1026 av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1029 ff_thread_release_buffer(dst, &fdst->picture);
1030 if (fsrc->picture.f->data[0]) {
1031 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1041 AVCodec ff_ffv1_decoder = {
1043 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1044 .type = AVMEDIA_TYPE_VIDEO,
1045 .id = AV_CODEC_ID_FFV1,
1046 .priv_data_size = sizeof(FFV1Context),
1047 .init = decode_init,
1048 .close = ff_ffv1_close,
1049 .decode = decode_frame,
1050 .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
1051 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1052 .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1053 AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,
1054 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP