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);
96 static int is_input_end(FFV1Context *s)
98 if (s->ac != AC_GOLOMB_RICE) {
99 RangeCoder *const c = &s->c;
100 if (c->overread > MAX_OVERREAD)
101 return AVERROR_INVALIDDATA;
103 if (get_bits_left(&s->gb) < 1)
104 return AVERROR_INVALIDDATA;
110 #define RENAME(name) name
111 #include "ffv1dec_template.c"
116 #define RENAME(name) name ## 32
117 #include "ffv1dec_template.c"
119 static int decode_plane(FFV1Context *s, uint8_t *src,
120 int w, int h, int stride, int plane_index,
125 sample[0] = s->sample_buffer + 3;
126 sample[1] = s->sample_buffer + w + 6 + 3;
130 memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
132 for (y = 0; y < h; y++) {
133 int16_t *temp = sample[0]; // FIXME: try a normal buffer
135 sample[0] = sample[1];
138 sample[1][-1] = sample[0][0];
139 sample[0][w] = sample[0][w - 1];
142 if (s->avctx->bits_per_raw_sample <= 8) {
143 int ret = decode_line(s, w, sample, plane_index, 8);
146 for (x = 0; x < w; x++)
147 src[x*pixel_stride + stride * y] = sample[1][x];
149 int ret = decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
152 if (s->packed_at_lsb) {
153 for (x = 0; x < w; x++) {
154 ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
157 for (x = 0; x < w; x++) {
158 ((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);
162 // STOP_TIMER("decode-line") }
167 static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
169 RangeCoder *c = &fs->c;
170 uint8_t state[CONTEXT_SIZE];
171 unsigned ps, i, context_count;
172 memset(state, 128, sizeof(state));
174 av_assert0(f->version > 2);
176 fs->slice_x = get_symbol(c, state, 0) * f->width ;
177 fs->slice_y = get_symbol(c, state, 0) * f->height;
178 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
179 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
181 fs->slice_x /= f->num_h_slices;
182 fs->slice_y /= f->num_v_slices;
183 fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
184 fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
185 if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
187 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
188 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
191 for (i = 0; i < f->plane_count; i++) {
192 PlaneContext * const p = &fs->plane[i];
193 int idx = get_symbol(c, state, 0);
194 if (idx >= (unsigned)f->quant_table_count) {
195 av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
198 p->quant_table_index = idx;
199 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
200 context_count = f->context_count[idx];
202 if (p->context_count < context_count) {
204 av_freep(&p->vlc_state);
206 p->context_count = context_count;
209 ps = get_symbol(c, state, 0);
211 f->cur->interlaced_frame = 1;
212 f->cur->top_field_first = 1;
213 } else if (ps == 2) {
214 f->cur->interlaced_frame = 1;
215 f->cur->top_field_first = 0;
216 } else if (ps == 3) {
217 f->cur->interlaced_frame = 0;
219 f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
220 f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
222 if (av_image_check_sar(f->width, f->height,
223 f->cur->sample_aspect_ratio) < 0) {
224 av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
225 f->cur->sample_aspect_ratio.num,
226 f->cur->sample_aspect_ratio.den);
227 f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
230 if (fs->version > 3) {
231 fs->slice_reset_contexts = get_rac(c, state);
232 fs->slice_coding_mode = get_symbol(c, state, 0);
233 if (fs->slice_coding_mode != 1) {
234 fs->slice_rct_by_coef = get_symbol(c, state, 0);
235 fs->slice_rct_ry_coef = get_symbol(c, state, 0);
236 if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
237 av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
238 return AVERROR_INVALIDDATA;
246 static int decode_slice(AVCodecContext *c, void *arg)
248 FFV1Context *fs = *(void **)arg;
249 FFV1Context *f = fs->avctx->priv_data;
250 int width, height, x, y, ret;
251 const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
252 AVFrame * const p = f->cur;
255 for( si=0; fs != f->slice_context[si]; si ++)
258 if(f->fsrc && !p->key_frame)
259 ff_thread_await_progress(&f->last_picture, si, 0);
261 if(f->fsrc && !p->key_frame) {
262 FFV1Context *fssrc = f->fsrc->slice_context[si];
263 FFV1Context *fsdst = f->slice_context[si];
264 av_assert1(fsdst->plane_count == fssrc->plane_count);
265 av_assert1(fsdst == fs);
268 fsdst->slice_damaged |= fssrc->slice_damaged;
270 for (i = 0; i < f->plane_count; i++) {
271 PlaneContext *psrc = &fssrc->plane[i];
272 PlaneContext *pdst = &fsdst->plane[i];
274 av_free(pdst->state);
275 av_free(pdst->vlc_state);
276 memcpy(pdst, psrc, sizeof(*pdst));
278 pdst->vlc_state = NULL;
281 pdst->state = av_malloc_array(CONTEXT_SIZE, psrc->context_count);
282 memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
284 pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
285 memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
290 fs->slice_rct_by_coef = 1;
291 fs->slice_rct_ry_coef = 1;
293 if (f->version > 2) {
294 if (ff_ffv1_init_slice_state(f, fs) < 0)
295 return AVERROR(ENOMEM);
296 if (decode_slice_header(f, fs) < 0) {
297 fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
298 fs->slice_damaged = 1;
299 return AVERROR_INVALIDDATA;
302 if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
304 if (f->cur->key_frame || fs->slice_reset_contexts)
305 ff_ffv1_clear_slice_state(f, fs);
307 width = fs->slice_width;
308 height = fs->slice_height;
312 if (fs->ac == AC_GOLOMB_RICE) {
313 if (f->version == 3 && f->micro_version > 1 || f->version > 3)
314 get_rac(&fs->c, (uint8_t[]) { 129 });
315 fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
316 init_get_bits(&fs->gb,
317 fs->c.bytestream_start + fs->ac_byte_count,
318 (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
321 av_assert1(width && height);
322 if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
323 const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
324 const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
325 const int cx = x >> f->chroma_h_shift;
326 const int cy = y >> f->chroma_v_shift;
327 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
329 if (f->chroma_planes) {
330 decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
331 decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
333 if (fs->transparency)
334 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);
335 } else if (f->colorspace == 0) {
336 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
337 decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
338 } else if (f->use32bit) {
339 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
340 p->data[1] + ps * x + y * p->linesize[1],
341 p->data[2] + ps * x + y * p->linesize[2] };
342 decode_rgb_frame32(fs, planes, width, height, p->linesize);
344 uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
345 p->data[1] + ps * x + y * p->linesize[1],
346 p->data[2] + ps * x + y * p->linesize[2] };
347 decode_rgb_frame(fs, planes, width, height, p->linesize);
349 if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
351 get_rac(&fs->c, (uint8_t[]) { 129 });
352 v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
354 av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
355 fs->slice_damaged = 1;
361 ff_thread_report_progress(&f->picture, si, 0);
366 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
370 uint8_t state[CONTEXT_SIZE];
372 memset(state, 128, sizeof(state));
374 for (v = 0; i < 128; v++) {
375 unsigned len = get_symbol(c, state, 0) + 1U;
377 if (len > 128 - i || !len)
378 return AVERROR_INVALIDDATA;
381 quant_table[i] = scale * v;
386 for (i = 1; i < 128; i++)
387 quant_table[256 - i] = -quant_table[i];
388 quant_table[128] = -quant_table[127];
393 static int read_quant_tables(RangeCoder *c,
394 int16_t quant_table[MAX_CONTEXT_INPUTS][256])
397 int context_count = 1;
399 for (i = 0; i < 5; i++) {
400 int ret = read_quant_table(c, quant_table[i], context_count);
403 context_count *= ret;
404 if (context_count > 32768U) {
405 return AVERROR_INVALIDDATA;
408 return (context_count + 1) / 2;
411 static int read_extra_header(FFV1Context *f)
413 RangeCoder *const c = &f->c;
414 uint8_t state[CONTEXT_SIZE];
416 uint8_t state2[32][CONTEXT_SIZE];
419 memset(state2, 128, sizeof(state2));
420 memset(state, 128, sizeof(state));
422 ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
423 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
425 f->version = get_symbol(c, state, 0);
426 if (f->version < 2) {
427 av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
428 return AVERROR_INVALIDDATA;
430 if (f->version > 2) {
431 c->bytestream_end -= 4;
432 f->micro_version = get_symbol(c, state, 0);
433 if (f->micro_version < 0)
434 return AVERROR_INVALIDDATA;
436 f->ac = get_symbol(c, state, 0);
438 if (f->ac == AC_RANGE_CUSTOM_TAB) {
439 for (i = 1; i < 256; i++)
440 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
443 f->colorspace = get_symbol(c, state, 0); //YUV cs type
444 f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
445 f->chroma_planes = get_rac(c, state);
446 f->chroma_h_shift = get_symbol(c, state, 0);
447 f->chroma_v_shift = get_symbol(c, state, 0);
448 f->transparency = get_rac(c, state);
449 f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
450 f->num_h_slices = 1 + get_symbol(c, state, 0);
451 f->num_v_slices = 1 + get_symbol(c, state, 0);
453 if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
454 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
455 f->chroma_h_shift, f->chroma_v_shift);
456 return AVERROR_INVALIDDATA;
459 if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
460 f->num_v_slices > (unsigned)f->height || !f->num_v_slices
462 av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
463 return AVERROR_INVALIDDATA;
466 f->quant_table_count = get_symbol(c, state, 0);
467 if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
468 av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
469 f->quant_table_count = 0;
470 return AVERROR_INVALIDDATA;
473 for (i = 0; i < f->quant_table_count; i++) {
474 f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
475 if (f->context_count[i] < 0) {
476 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
477 return AVERROR_INVALIDDATA;
480 if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
483 for (i = 0; i < f->quant_table_count; i++)
484 if (get_rac(c, state)) {
485 for (j = 0; j < f->context_count[i]; j++)
486 for (k = 0; k < CONTEXT_SIZE; k++) {
487 int pred = j ? f->initial_states[i][j - 1][k] : 128;
488 f->initial_states[i][j][k] =
489 (pred + get_symbol(c, state2[k], 1)) & 0xFF;
493 if (f->version > 2) {
494 f->ec = get_symbol(c, state, 0);
495 if (f->micro_version > 2)
496 f->intra = get_symbol(c, state, 0);
499 if (f->version > 2) {
501 v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
502 f->avctx->extradata, f->avctx->extradata_size);
503 if (v || f->avctx->extradata_size < 4) {
504 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
505 return AVERROR_INVALIDDATA;
507 crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
510 if (f->avctx->debug & FF_DEBUG_PICT_INFO)
511 av_log(f->avctx, AV_LOG_DEBUG,
512 "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",
513 f->version, f->micro_version,
516 f->avctx->bits_per_raw_sample,
517 f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
519 f->num_h_slices, f->num_v_slices,
520 f->quant_table_count,
528 static int read_header(FFV1Context *f)
530 uint8_t state[CONTEXT_SIZE];
531 int i, j, context_count = -1; //-1 to avoid warning
532 RangeCoder *const c = &f->slice_context[0]->c;
534 memset(state, 128, sizeof(state));
536 if (f->version < 2) {
537 int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample;
538 unsigned v= get_symbol(c, state, 0);
540 av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
541 return AVERROR_INVALIDDATA;
544 f->ac = get_symbol(c, state, 0);
546 if (f->ac == AC_RANGE_CUSTOM_TAB) {
547 for (i = 1; i < 256; i++)
548 f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
551 colorspace = get_symbol(c, state, 0); //YUV cs type
552 bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
553 chroma_planes = get_rac(c, state);
554 chroma_h_shift = get_symbol(c, state, 0);
555 chroma_v_shift = get_symbol(c, state, 0);
556 transparency = get_rac(c, state);
557 if (colorspace == 0 && f->avctx->skip_alpha)
560 if (f->plane_count) {
561 if (colorspace != f->colorspace ||
562 bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
563 chroma_planes != f->chroma_planes ||
564 chroma_h_shift != f->chroma_h_shift ||
565 chroma_v_shift != f->chroma_v_shift ||
566 transparency != f->transparency) {
567 av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
568 return AVERROR_INVALIDDATA;
572 if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
573 av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
574 chroma_h_shift, chroma_v_shift);
575 return AVERROR_INVALIDDATA;
578 f->colorspace = colorspace;
579 f->avctx->bits_per_raw_sample = bits_per_raw_sample;
580 f->chroma_planes = chroma_planes;
581 f->chroma_h_shift = chroma_h_shift;
582 f->chroma_v_shift = chroma_v_shift;
583 f->transparency = transparency;
585 f->plane_count = 2 + f->transparency;
588 if (f->colorspace == 0) {
589 if (!f->transparency && !f->chroma_planes) {
590 if (f->avctx->bits_per_raw_sample <= 8)
591 f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
592 else if (f->avctx->bits_per_raw_sample == 10) {
593 f->packed_at_lsb = 1;
594 f->avctx->pix_fmt = AV_PIX_FMT_GRAY10;
595 } else if (f->avctx->bits_per_raw_sample == 12) {
596 f->packed_at_lsb = 1;
597 f->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
598 } else if (f->avctx->bits_per_raw_sample == 16) {
599 f->packed_at_lsb = 1;
600 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
601 } else if (f->avctx->bits_per_raw_sample < 16) {
602 f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
604 return AVERROR(ENOSYS);
605 } else if (f->transparency && !f->chroma_planes) {
606 if (f->avctx->bits_per_raw_sample <= 8)
607 f->avctx->pix_fmt = AV_PIX_FMT_YA8;
609 return AVERROR(ENOSYS);
610 } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
611 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
612 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
613 case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
614 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
615 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
616 case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
617 case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
619 } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
620 switch(16*f->chroma_h_shift + f->chroma_v_shift) {
621 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
622 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
623 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
625 } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
626 f->packed_at_lsb = 1;
627 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
628 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
629 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
630 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
632 } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
633 f->packed_at_lsb = 1;
634 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
635 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
636 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
637 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
639 } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
640 f->packed_at_lsb = 1;
641 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
642 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
643 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
644 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
646 } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
647 f->packed_at_lsb = 1;
648 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
649 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
650 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
651 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
653 } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
654 f->packed_at_lsb = 1;
655 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
656 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
657 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
658 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
660 } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
661 f->packed_at_lsb = 1;
662 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
663 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
664 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
665 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
667 } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
668 f->packed_at_lsb = 1;
669 switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
670 case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
671 case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
672 case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
675 } else if (f->colorspace == 1) {
676 if (f->chroma_h_shift || f->chroma_v_shift) {
677 av_log(f->avctx, AV_LOG_ERROR,
678 "chroma subsampling not supported in this colorspace\n");
679 return AVERROR(ENOSYS);
681 if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
682 f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
683 else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
684 f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
685 else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
686 f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
687 else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
688 f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
689 else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
690 f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
691 else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
692 f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
693 else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
694 f->avctx->pix_fmt = AV_PIX_FMT_GBRP16;
698 av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
699 return AVERROR(ENOSYS);
701 if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
702 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
703 return AVERROR(ENOSYS);
706 ff_dlog(f->avctx, "%d %d %d\n",
707 f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
708 if (f->version < 2) {
709 context_count = read_quant_tables(c, f->quant_table);
710 if (context_count < 0) {
711 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
712 return AVERROR_INVALIDDATA;
714 f->slice_count = f->max_slice_count;
715 } else if (f->version < 3) {
716 f->slice_count = get_symbol(c, state, 0);
718 const uint8_t *p = c->bytestream_end;
719 for (f->slice_count = 0;
720 f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
722 int trailer = 3 + 5*!!f->ec;
723 int size = AV_RB24(p-trailer);
724 if (size + trailer > p - c->bytestream_start)
729 if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
730 av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
731 return AVERROR_INVALIDDATA;
734 for (j = 0; j < f->slice_count; j++) {
735 FFV1Context *fs = f->slice_context[j];
737 fs->packed_at_lsb = f->packed_at_lsb;
739 fs->slice_damaged = 0;
741 if (f->version == 2) {
742 fs->slice_x = get_symbol(c, state, 0) * f->width ;
743 fs->slice_y = get_symbol(c, state, 0) * f->height;
744 fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
745 fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
747 fs->slice_x /= f->num_h_slices;
748 fs->slice_y /= f->num_v_slices;
749 fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
750 fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
751 if ((unsigned)fs->slice_width > f->width ||
752 (unsigned)fs->slice_height > f->height)
753 return AVERROR_INVALIDDATA;
754 if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
755 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
756 return AVERROR_INVALIDDATA;
759 for (i = 0; i < f->plane_count; i++) {
760 PlaneContext *const p = &fs->plane[i];
762 if (f->version == 2) {
763 int idx = get_symbol(c, state, 0);
764 if (idx > (unsigned)f->quant_table_count) {
765 av_log(f->avctx, AV_LOG_ERROR,
766 "quant_table_index out of range\n");
767 return AVERROR_INVALIDDATA;
769 p->quant_table_index = idx;
770 memcpy(p->quant_table, f->quant_tables[idx],
771 sizeof(p->quant_table));
772 context_count = f->context_count[idx];
774 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
777 if (f->version <= 2) {
778 av_assert0(context_count >= 0);
779 if (p->context_count < context_count) {
781 av_freep(&p->vlc_state);
783 p->context_count = context_count;
790 static av_cold int decode_init(AVCodecContext *avctx)
792 FFV1Context *f = avctx->priv_data;
795 if ((ret = ff_ffv1_common_init(avctx)) < 0)
798 if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
801 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
804 avctx->internal->allocate_progress = 1;
809 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
811 uint8_t *buf = avpkt->data;
812 int buf_size = avpkt->size;
813 FFV1Context *f = avctx->priv_data;
814 RangeCoder *const c = &f->slice_context[0]->c;
816 uint8_t keystate = 128;
820 if (f->last_picture.f)
821 ff_thread_release_buffer(avctx, &f->last_picture);
822 FFSWAP(ThreadFrame, f->picture, f->last_picture);
824 f->cur = p = f->picture.f;
826 if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
827 /* we have interlaced material flagged in container */
828 p->interlaced_frame = 1;
829 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
830 p->top_field_first = 1;
834 ff_init_range_decoder(c, buf, buf_size);
835 ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
837 p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
838 if (get_rac(c, &keystate)) {
841 if ((ret = read_header(f)) < 0)
845 if (!f->key_frame_ok) {
846 av_log(avctx, AV_LOG_ERROR,
847 "Cannot decode non-keyframe without valid keyframe\n");
848 return AVERROR_INVALIDDATA;
853 if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
856 if (avctx->debug & FF_DEBUG_PICT_INFO)
857 av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
858 f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
860 ff_thread_finish_setup(avctx);
862 buf_p = buf + buf_size;
863 for (i = f->slice_count - 1; i >= 0; i--) {
864 FFV1Context *fs = f->slice_context[i];
865 int trailer = 3 + 5*!!f->ec;
868 if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
869 else v = buf_p - c->bytestream_start;
870 if (buf_p - c->bytestream_start < v) {
871 av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
872 ff_thread_report_progress(&f->picture, INT_MAX, 0);
873 return AVERROR_INVALIDDATA;
878 unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
880 int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
881 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
882 if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
883 av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
884 } else if (ts != AV_NOPTS_VALUE) {
885 av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
887 av_log(f->avctx, AV_LOG_ERROR, "\n");
889 fs->slice_damaged = 1;
891 if (avctx->debug & FF_DEBUG_PICT_INFO) {
892 av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
897 ff_init_range_decoder(&fs->c, buf_p, v);
899 fs->c.bytestream_end = buf_p + v;
905 avctx->execute(avctx,
907 &f->slice_context[0],
912 for (i = f->slice_count - 1; i >= 0; i--) {
913 FFV1Context *fs = f->slice_context[i];
915 if (fs->slice_damaged && f->last_picture.f->data[0]) {
916 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
917 const uint8_t *src[4];
919 ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
920 for (j = 0; j < desc->nb_components; j++) {
921 int pixshift = desc->comp[j].depth > 8;
922 int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
923 int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
924 dst[j] = p->data[j] + p->linesize[j] *
925 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
926 src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
927 (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
930 if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
931 desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) {
933 src[1] = f->last_picture.f->data[1];
935 av_image_copy(dst, p->linesize, src,
936 f->last_picture.f->linesize,
942 ff_thread_report_progress(&f->picture, INT_MAX, 0);
946 if (f->last_picture.f)
947 ff_thread_release_buffer(avctx, &f->last_picture);
949 if ((ret = av_frame_ref(data, f->picture.f)) < 0)
958 static int init_thread_copy(AVCodecContext *avctx)
960 FFV1Context *f = avctx->priv_data;
964 f->last_picture.f = NULL;
965 f->sample_buffer = NULL;
966 f->max_slice_count = 0;
969 for (i = 0; i < f->quant_table_count; i++) {
970 av_assert0(f->version > 1);
971 f->initial_states[i] = av_memdup(f->initial_states[i],
972 f->context_count[i] * sizeof(*f->initial_states[i]));
975 f->picture.f = av_frame_alloc();
976 f->last_picture.f = av_frame_alloc();
978 if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
985 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
987 fsdst->version = fsrc->version;
988 fsdst->micro_version = fsrc->micro_version;
989 fsdst->chroma_planes = fsrc->chroma_planes;
990 fsdst->chroma_h_shift = fsrc->chroma_h_shift;
991 fsdst->chroma_v_shift = fsrc->chroma_v_shift;
992 fsdst->transparency = fsrc->transparency;
993 fsdst->plane_count = fsrc->plane_count;
994 fsdst->ac = fsrc->ac;
995 fsdst->colorspace = fsrc->colorspace;
997 fsdst->ec = fsrc->ec;
998 fsdst->intra = fsrc->intra;
999 fsdst->slice_damaged = fssrc->slice_damaged;
1000 fsdst->key_frame_ok = fsrc->key_frame_ok;
1002 fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample;
1003 fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1004 fsdst->slice_count = fsrc->slice_count;
1005 if (fsrc->version<3){
1006 fsdst->slice_x = fssrc->slice_x;
1007 fsdst->slice_y = fssrc->slice_y;
1008 fsdst->slice_width = fssrc->slice_width;
1009 fsdst->slice_height = fssrc->slice_height;
1014 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1016 FFV1Context *fsrc = src->priv_data;
1017 FFV1Context *fdst = dst->priv_data;
1024 ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture;
1025 uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1026 struct FFV1Context *slice_context[MAX_SLICES];
1027 memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1028 memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1030 memcpy(fdst, fsrc, sizeof(*fdst));
1031 memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1032 memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1033 fdst->picture = picture;
1034 fdst->last_picture = last_picture;
1035 for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1036 FFV1Context *fssrc = fsrc->slice_context[i];
1037 FFV1Context *fsdst = fdst->slice_context[i];
1038 copy_fields(fsdst, fssrc, fsrc);
1040 av_assert0(!fdst->plane[0].state);
1041 av_assert0(!fdst->sample_buffer);
1044 av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1047 ff_thread_release_buffer(dst, &fdst->picture);
1048 if (fsrc->picture.f->data[0]) {
1049 if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1059 AVCodec ff_ffv1_decoder = {
1061 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1062 .type = AVMEDIA_TYPE_VIDEO,
1063 .id = AV_CODEC_ID_FFV1,
1064 .priv_data_size = sizeof(FFV1Context),
1065 .init = decode_init,
1066 .close = ff_ffv1_close,
1067 .decode = decode_frame,
1068 .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
1069 .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1070 .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1071 AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,
1072 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP