FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/mpegvideo_dec.c
Date: 2023-03-31 03:41:15
Exec Total Coverage
Lines: 373 543 68.7%
Functions: 18 19 94.7%
Branches: 201 356 56.5%
Line Branch Exec Source
1 /*
2 * Common mpeg video decoding code
3 * Copyright (c) 2000,2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This file is part of FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23 #include <limits.h>
24
25 #include "config_components.h"
26
27 #include "libavutil/avassert.h"
28 #include "libavutil/imgutils.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/video_enc_params.h"
31
32 #include "avcodec.h"
33 #include "h264chroma.h"
34 #include "internal.h"
35 #include "mpegutils.h"
36 #include "mpegvideo.h"
37 #include "mpegvideodec.h"
38 #include "mpeg4videodec.h"
39 #include "threadframe.h"
40 #include "wmv2dec.h"
41
42 611 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
43 {
44 611 ff_mpv_common_defaults(s);
45
46 611 s->avctx = avctx;
47 611 s->width = avctx->coded_width;
48 611 s->height = avctx->coded_height;
49 611 s->codec_id = avctx->codec->id;
50 611 s->workaround_bugs = avctx->workaround_bugs;
51
52 /* convert fourcc to upper case */
53 611 s->codec_tag = ff_toupper4(avctx->codec_tag);
54
55 611 ff_h264chroma_init(&s->h264chroma, 8); //for lowres
56 611 }
57
58 18 int ff_mpeg_update_thread_context(AVCodecContext *dst,
59 const AVCodecContext *src)
60 {
61 18 MpegEncContext *const s1 = src->priv_data;
62 18 MpegEncContext *const s = dst->priv_data;
63 int ret;
64
65
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 18 if (dst == src)
66 ✗ return 0;
67
68
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 18 av_assert0(s != s1);
69
70 // FIXME can parameters change on I-frames?
71 // in that case dst may need a reinit
72
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 18 if (!s->context_initialized) {
73 8 void *private_ctx = s->private_ctx;
74 int err;
75 8 memcpy(s, s1, sizeof(*s));
76
77 8 s->avctx = dst;
78 8 s->private_ctx = private_ctx;
79 8 s->bitstream_buffer = NULL;
80 8 s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
81
82
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 8 if (s1->context_initialized) {
83 8 ff_mpv_idct_init(s);
84
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 8 if ((err = ff_mpv_common_init(s)) < 0) {
85 ✗ memset(s, 0, sizeof(*s));
86 ✗ s->avctx = dst;
87 ✗ s->private_ctx = private_ctx;
88 ✗ memcpy(&s->h264chroma, &s1->h264chroma, sizeof(s->h264chroma));
89 ✗ return err;
90 }
91 }
92 }
93
94
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 18 if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
95 ✗ s->height = s1->height;
96 ✗ s->width = s1->width;
97 ✗ if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
98 ✗ return ret;
99 }
100
101 18 s->quarter_sample = s1->quarter_sample;
102
103 18 s->coded_picture_number = s1->coded_picture_number;
104 18 s->picture_number = s1->picture_number;
105
106
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 18 av_assert0(!s->picture || s->picture != s1->picture);
107
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 18 if (s->picture)
108
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 666 for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
109 648 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
110
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 683 if (s1->picture && s1->picture[i].f->buf[0] &&
111 35 (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
112 ✗ return ret;
113 }
114
115 #define UPDATE_PICTURE(pic)\
116 do {\
117 ff_mpeg_unref_picture(s->avctx, &s->pic);\
118 if (s1->pic.f && s1->pic.f->buf[0])\
119 ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
120 else\
121 ret = ff_update_picture_tables(&s->pic, &s1->pic);\
122 if (ret < 0)\
123 return ret;\
124 } while (0)
125
126
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 18 UPDATE_PICTURE(current_picture);
127
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 18 UPDATE_PICTURE(last_picture);
128
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 18 UPDATE_PICTURE(next_picture);
129
130 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
131 ((pic && pic >= old_ctx->picture && \
132 pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
133 &new_ctx->picture[pic - old_ctx->picture] : NULL)
134
135
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 18 s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
136
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 18 s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
137
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 18 s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
138
139 // Error/bug resilience
140 18 s->workaround_bugs = s1->workaround_bugs;
141 18 s->padding_bug_score = s1->padding_bug_score;
142
143 // MPEG-4 timing info
144 18 memcpy(&s->last_time_base, &s1->last_time_base,
145 18 (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
146 18 (char *) &s1->last_time_base);
147
148 // B-frame info
149 18 s->max_b_frames = s1->max_b_frames;
150 18 s->low_delay = s1->low_delay;
151 18 s->droppable = s1->droppable;
152
153 // DivX handling (doesn't work)
154 18 s->divx_packed = s1->divx_packed;
155
156
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 18 if (s1->bitstream_buffer) {
157 ✗ if (s1->bitstream_buffer_size +
158 ✗ AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) {
159 ✗ av_fast_malloc(&s->bitstream_buffer,
160 &s->allocated_bitstream_buffer_size,
161 ✗ s1->allocated_bitstream_buffer_size);
162 ✗ if (!s->bitstream_buffer) {
163 ✗ s->bitstream_buffer_size = 0;
164 ✗ return AVERROR(ENOMEM);
165 }
166 }
167 ✗ s->bitstream_buffer_size = s1->bitstream_buffer_size;
168 ✗ memcpy(s->bitstream_buffer, s1->bitstream_buffer,
169 ✗ s1->bitstream_buffer_size);
170 ✗ memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
171 AV_INPUT_BUFFER_PADDING_SIZE);
172 }
173
174 // linesize-dependent scratch buffer allocation
175
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 18 if (!s->sc.edge_emu_buffer)
176
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 8 if (s1->linesize) {
177
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 8 if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
178 8 &s->sc, s1->linesize) < 0) {
179 ✗ av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
180 "scratch buffers.\n");
181 ✗ return AVERROR(ENOMEM);
182 }
183 } else {
184 ✗ av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
185 "be allocated due to unknown size.\n");
186 }
187
188 // MPEG-2/interlacing info
189 18 memcpy(&s->progressive_sequence, &s1->progressive_sequence,
190 (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
191
192 18 return 0;
193 }
194
195 42 int ff_mpv_common_frame_size_change(MpegEncContext *s)
196 {
197 42 int err = 0;
198
199
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 42 if (!s->context_initialized)
200 ✗ return AVERROR(EINVAL);
201
202 42 ff_mpv_free_context_frame(s);
203
204
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 42 if (s->picture)
205
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 1554 for (int i = 0; i < MAX_PICTURE_COUNT; i++)
206 1512 s->picture[i].needs_realloc = 1;
207
208 42 s->last_picture_ptr =
209 42 s->next_picture_ptr =
210 42 s->current_picture_ptr = NULL;
211
212
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 84 if ((s->width || s->height) &&
213 42 (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
214 ✗ goto fail;
215
216 /* set chroma shifts */
217 42 err = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
218 &s->chroma_x_shift,
219 &s->chroma_y_shift);
220
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 42 if (err < 0)
221 ✗ goto fail;
222
223
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 42 if ((err = ff_mpv_init_context_frame(s)))
224 ✗ goto fail;
225
226 42 memset(s->thread_context, 0, sizeof(s->thread_context));
227 42 s->thread_context[0] = s;
228
229
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 42 if (s->width && s->height) {
230 42 err = ff_mpv_init_duplicate_contexts(s);
231
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 42 if (err < 0)
232 ✗ goto fail;
233 }
234 42 s->context_reinit = 0;
235
236 42 return 0;
237 ✗ fail:
238 ✗ ff_mpv_free_context_frame(s);
239 ✗ s->context_reinit = 1;
240 ✗ return err;
241 }
242
243 11102 static int alloc_picture(MpegEncContext *s, Picture *pic)
244 {
245 22204 return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, 0, 0,
246 11102 s->chroma_x_shift, s->chroma_y_shift, s->out_format,
247 s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
248 &s->linesize, &s->uvlinesize);
249 }
250
251 ✗ static void gray_frame(AVFrame *frame)
252 {
253 int h_chroma_shift, v_chroma_shift;
254
255 ✗ av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
256
257 ✗ for (int i = 0; i < frame->height; i++)
258 ✗ memset(frame->data[0] + frame->linesize[0] * i, 0x80, frame->width);
259 ✗ for (int i = 0; i < AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
260 ✗ memset(frame->data[1] + frame->linesize[1] * i,
261 ✗ 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
262 ✗ memset(frame->data[2] + frame->linesize[2] * i,
263 ✗ 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
264 }
265 }
266
267 /**
268 * generic function called after decoding
269 * the header and before a frame is decoded.
270 */
271 11096 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
272 {
273 Picture *pic;
274 int idx, ret;
275
276 11096 s->mb_skipped = 0;
277
278
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 11096 if (!ff_thread_can_start_frame(avctx)) {
279 ✗ av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
280 ✗ return -1;
281 }
282
283 /* mark & release old frames */
284
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 11096 if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
285
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 7936 s->last_picture_ptr != s->next_picture_ptr &&
286
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 7936 s->last_picture_ptr->f->buf[0]) {
287 7936 ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
288 }
289
290 /* release non reference/forgotten frames */
291
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 410552 for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
292
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 399456 if (!s->picture[i].reference ||
293
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 13467 (&s->picture[i] != s->last_picture_ptr &&
294
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 10822 &s->picture[i] != s->next_picture_ptr &&
295
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 30 !s->picture[i].needs_realloc)) {
296 385989 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
297 }
298 }
299
300 11096 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
301 11096 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
302 11096 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
303
304
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 11096 if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
305 // we already have an unused image
306 // (maybe it was set before reading the header)
307 1153 pic = s->current_picture_ptr;
308 } else {
309 9943 idx = ff_find_unused_picture(s->avctx, s->picture, 0);
310
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 9943 if (idx < 0) {
311 ✗ av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
312 ✗ return idx;
313 }
314 9943 pic = &s->picture[idx];
315 }
316
317 11096 pic->reference = 0;
318
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 11096 if (!s->droppable) {
319
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 11096 if (s->pict_type != AV_PICTURE_TYPE_B)
320 8451 pic->reference = 3;
321 }
322
323 #if FF_API_FRAME_PICTURE_NUMBER
324 FF_DISABLE_DEPRECATION_WARNINGS
325 11096 pic->f->coded_picture_number = s->coded_picture_number++;
326 FF_ENABLE_DEPRECATION_WARNINGS
327 #endif
328
329
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 11096 if (alloc_picture(s, pic) < 0)
330 ✗ return -1;
331
332 11096 s->current_picture_ptr = pic;
333 // FIXME use only the vars from current_pic
334 11096 s->current_picture_ptr->f->top_field_first = s->top_field_first;
335
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 11096 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
336
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 10616 s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
337
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 3826 if (s->picture_structure != PICT_FRAME)
338 695 s->current_picture_ptr->f->top_field_first =
339 695 (s->picture_structure == PICT_TOP_FIELD) == s->first_field;
340 }
341
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 13361 s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame &&
342
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 2265 !s->progressive_sequence;
343 11096 s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
344
345 11096 s->current_picture_ptr->f->pict_type = s->pict_type;
346 11096 s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
347
348
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 11096 if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
349 s->current_picture_ptr)) < 0)
350 ✗ return ret;
351
352
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 11096 if (s->pict_type != AV_PICTURE_TYPE_B) {
353 8451 s->last_picture_ptr = s->next_picture_ptr;
354
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 8451 if (!s->droppable)
355 8451 s->next_picture_ptr = s->current_picture_ptr;
356 }
357 ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
358 s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
359 s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
360 s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
361 s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL,
362 s->pict_type, s->droppable);
363
364
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 11096 if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
365
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 304 (s->pict_type != AV_PICTURE_TYPE_I)) {
366 int h_chroma_shift, v_chroma_shift;
367 6 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
368 &h_chroma_shift, &v_chroma_shift);
369
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 6 if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f->buf[0])
370 ✗ av_log(avctx, AV_LOG_DEBUG,
371 "allocating dummy last picture for B frame\n");
372
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 6 else if (s->pict_type != AV_PICTURE_TYPE_I)
373 6 av_log(avctx, AV_LOG_ERROR,
374 "warning: first frame is no keyframe\n");
375
376 /* Allocate a dummy frame */
377 6 idx = ff_find_unused_picture(s->avctx, s->picture, 0);
378
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 6 if (idx < 0) {
379 ✗ av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
380 ✗ return idx;
381 }
382 6 s->last_picture_ptr = &s->picture[idx];
383
384 6 s->last_picture_ptr->reference = 3;
385 6 s->last_picture_ptr->f->key_frame = 0;
386 6 s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
387
388
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 6 if (alloc_picture(s, s->last_picture_ptr) < 0) {
389 ✗ s->last_picture_ptr = NULL;
390 ✗ return -1;
391 }
392
393
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 6 if (!avctx->hwaccel) {
394
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 1734 for (int i = 0; i < avctx->height; i++)
395 1728 memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
396 1728 0x80, avctx->width);
397
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 6 if (s->last_picture_ptr->f->data[2]) {
398
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 870 for (int i = 0; i < AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
399 864 memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
400 864 0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
401 864 memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
402 864 0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
403 }
404 }
405
406
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 6 if (s->codec_id == AV_CODEC_ID_FLV1 || s->codec_id == AV_CODEC_ID_H263) {
407 ✗ for (int i = 0; i < avctx->height; i++)
408 ✗ memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0] * i,
409 ✗ 16, avctx->width);
410 }
411 }
412
413 6 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
414 6 ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
415 }
416
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 11096 if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
417 ✗ s->pict_type == AV_PICTURE_TYPE_B) {
418 /* Allocate a dummy frame */
419 ✗ idx = ff_find_unused_picture(s->avctx, s->picture, 0);
420 ✗ if (idx < 0) {
421 ✗ av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
422 ✗ return idx;
423 }
424 ✗ s->next_picture_ptr = &s->picture[idx];
425
426 ✗ s->next_picture_ptr->reference = 3;
427 ✗ s->next_picture_ptr->f->key_frame = 0;
428 ✗ s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
429
430 ✗ if (alloc_picture(s, s->next_picture_ptr) < 0) {
431 ✗ s->next_picture_ptr = NULL;
432 ✗ return -1;
433 }
434 ✗ ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
435 ✗ ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
436 }
437
438 #if 0 // BUFREF-FIXME
439 memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
440 memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
441 #endif
442
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 11096 if (s->last_picture_ptr) {
443
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 21596 if (s->last_picture_ptr->f->buf[0] &&
444 10798 (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
445 s->last_picture_ptr)) < 0)
446 ✗ return ret;
447 }
448
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449
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 22192 if (s->next_picture_ptr->f->buf[0] &&
450 11096 (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
451 s->next_picture_ptr)) < 0)
452 ✗ return ret;
453 }
454
455
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 11096 av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
456 s->last_picture_ptr->f->buf[0]));
457
458
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 11096 if (s->picture_structure != PICT_FRAME) {
459
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 3475 for (int i = 0; i < 4; i++) {
460
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 2780 if (s->picture_structure == PICT_BOTTOM_FIELD) {
461
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 2776 s->current_picture.f->data[i] = FF_PTR_ADD(s->current_picture.f->data[i],
462 s->current_picture.f->linesize[i]);
463 }
464 2780 s->current_picture.f->linesize[i] *= 2;
465 2780 s->last_picture.f->linesize[i] *= 2;
466 2780 s->next_picture.f->linesize[i] *= 2;
467 }
468 }
469
470 /* set dequantizer, we can't do it during init as
471 * it might change for MPEG-4 and we can't do it in the header
472 * decode as init is not called for MPEG-4 there yet */
473
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 11096 if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
474 3386 s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
475 3386 s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
476
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 7710 } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
477 7230 s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
478 7230 s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
479 } else {
480 480 s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
481 480 s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
482 }
483
484
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 11096 if (s->avctx->debug & FF_DEBUG_NOMC)
485 ✗ gray_frame(s->current_picture_ptr->f);
486
487 11096 return 0;
488 }
489
490 /* called after a frame has been decoded. */
491 11096 void ff_mpv_frame_end(MpegEncContext *s)
492 {
493 11096 emms_c();
494
495
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 11096 if (s->current_picture.reference)
496 8451 ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
497 11096 }
498
499 10875 void ff_print_debug_info(const MpegEncContext *s, const Picture *p, AVFrame *pict)
500 {
501 10875 ff_print_debug_info2(s->avctx, pict, s->mbskip_table, p->mb_type,
502 10875 p->qscale_table, p->motion_val,
503 10875 s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
504 10875 }
505
506 10142 int ff_mpv_export_qp_table(const MpegEncContext *s, AVFrame *f, const Picture *p, int qp_type)
507 {
508 AVVideoEncParams *par;
509
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 10142 int mult = (qp_type == FF_MPV_QSCALE_TYPE_MPEG1) ? 2 : 1;
510 10142 unsigned int nb_mb = p->alloc_mb_height * p->alloc_mb_width;
511
512
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 10142 if (!(s->avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS))
513 10127 return 0;
514
515 15 par = av_video_enc_params_create_side_data(f, AV_VIDEO_ENC_PARAMS_MPEG2, nb_mb);
516
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 15 if (!par)
517 ✗ return AVERROR(ENOMEM);
518
519
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 285 for (unsigned y = 0; y < p->alloc_mb_height; y++)
520
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 6210 for (unsigned x = 0; x < p->alloc_mb_width; x++) {
521 5940 const unsigned int block_idx = y * p->alloc_mb_width + x;
522 5940 const unsigned int mb_xy = y * p->alloc_mb_stride + x;
523 5940 AVVideoBlockParams *const b = av_video_enc_params_block(par, block_idx);
524
525 5940 b->src_x = x * 16;
526 5940 b->src_y = y * 16;
527 5940 b->w = 16;
528 5940 b->h = 16;
529
530 5940 b->delta_qp = p->qscale_table[mb_xy] * mult;
531 }
532
533 15 return 0;
534 }
535
536 167813 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
537 {
538 167813 ff_draw_horiz_band(s->avctx, s->current_picture_ptr->f,
539
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 167813 s->last_picture_ptr ? s->last_picture_ptr->f : NULL,
540 y, h, s->picture_structure,
541 s->first_field, s->low_delay);
542 167813 }
543
544 81 void ff_mpeg_flush(AVCodecContext *avctx)
545 {
546 81 MpegEncContext *const s = avctx->priv_data;
547
548
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 81 if (!s->picture)
549 ✗ return;
550
551
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 2997 for (int i = 0; i < MAX_PICTURE_COUNT; i++)
552 2916 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
553 81 s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
554
555 81 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
556 81 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
557 81 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
558
559 81 s->mb_x = s->mb_y = 0;
560
561 81 s->bitstream_buffer_size = 0;
562 81 s->pp_time = 0;
563 }
564
565 167813 void ff_mpv_report_decode_progress(MpegEncContext *s)
566 {
567
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 167813 if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
568 114737 ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
569 167813 }
570
571
572 126300 static inline int hpel_motion_lowres(MpegEncContext *s,
573 uint8_t *dest, const uint8_t *src,
574 int field_based, int field_select,
575 int src_x, int src_y,
576 int width, int height, ptrdiff_t stride,
577 int h_edge_pos, int v_edge_pos,
578 int w, int h, const h264_chroma_mc_func *pix_op,
579 int motion_x, int motion_y)
580 {
581 126300 const int lowres = s->avctx->lowres;
582 126300 const int op_index = FFMIN(lowres, 3);
583 126300 const int s_mask = (2 << lowres) - 1;
584 126300 int emu = 0;
585 int sx, sy;
586
587
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 126300 if (s->quarter_sample) {
588 ✗ motion_x /= 2;
589 ✗ motion_y /= 2;
590 }
591
592 126300 sx = motion_x & s_mask;
593 126300 sy = motion_y & s_mask;
594 126300 src_x += motion_x >> lowres + 1;
595 126300 src_y += motion_y >> lowres + 1;
596
597 126300 src += src_y * stride + src_x;
598
599
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 126300 if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
600
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 126300 (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
601 298 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
602 s->linesize, s->linesize,
603 298 w + 1, (h + 1) << field_based,
604 src_x, src_y * (1 << field_based),
605 h_edge_pos, v_edge_pos);
606 298 src = s->sc.edge_emu_buffer;
607 298 emu = 1;
608 }
609
610 126300 sx = (sx << 2) >> lowres;
611 126300 sy = (sy << 2) >> lowres;
612
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 126300 if (field_select)
613 ✗ src += s->linesize;
614 126300 pix_op[op_index](dest, src, stride, h, sx, sy);
615 126300 return emu;
616 }
617
618 /* apply one mpeg motion vector to the three components */
619 24814 static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
620 uint8_t *dest_y,
621 uint8_t *dest_cb,
622 uint8_t *dest_cr,
623 int field_based,
624 int bottom_field,
625 int field_select,
626 uint8_t *const *ref_picture,
627 const h264_chroma_mc_func *pix_op,
628 int motion_x, int motion_y,
629 int h, int mb_y)
630 {
631 const uint8_t *ptr_y, *ptr_cb, *ptr_cr;
632 int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
633 ptrdiff_t uvlinesize, linesize;
634 24814 const int lowres = s->avctx->lowres;
635 24814 const int op_index = FFMIN(lowres - 1 + s->chroma_x_shift, 3);
636 24814 const int block_s = 8 >> lowres;
637 24814 const int s_mask = (2 << lowres) - 1;
638 24814 const int h_edge_pos = s->h_edge_pos >> lowres;
639 24814 const int v_edge_pos = s->v_edge_pos >> lowres;
640 24814 linesize = s->current_picture.f->linesize[0] << field_based;
641 24814 uvlinesize = s->current_picture.f->linesize[1] << field_based;
642
643 // FIXME obviously not perfect but qpel will not work in lowres anyway
644
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 24814 if (s->quarter_sample) {
645 ✗ motion_x /= 2;
646 ✗ motion_y /= 2;
647 }
648
649
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 24814 if (field_based) {
650 ✗ motion_y += (bottom_field - field_select)*((1 << lowres)-1);
651 }
652
653 24814 sx = motion_x & s_mask;
654 24814 sy = motion_y & s_mask;
655 24814 src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
656 24814 src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
657
658
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 24814 if (s->out_format == FMT_H263) {
659 24814 uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
660 24814 uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
661 24814 uvsrc_x = src_x >> 1;
662 24814 uvsrc_y = src_y >> 1;
663 ✗ } else if (s->out_format == FMT_H261) {
664 // even chroma mv's are full pel in H261
665 ✗ mx = motion_x / 4;
666 ✗ my = motion_y / 4;
667 ✗ uvsx = (2 * mx) & s_mask;
668 ✗ uvsy = (2 * my) & s_mask;
669 ✗ uvsrc_x = s->mb_x * block_s + (mx >> lowres);
670 ✗ uvsrc_y = mb_y * block_s + (my >> lowres);
671 } else {
672 ✗ if (s->chroma_y_shift) {
673 ✗ mx = motion_x / 2;
674 ✗ my = motion_y / 2;
675 ✗ uvsx = mx & s_mask;
676 ✗ uvsy = my & s_mask;
677 ✗ uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
678 ✗ uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
679 } else {
680 ✗ if (s->chroma_x_shift) {
681 //Chroma422
682 ✗ mx = motion_x / 2;
683 ✗ uvsx = mx & s_mask;
684 ✗ uvsy = motion_y & s_mask;
685 ✗ uvsrc_y = src_y;
686 ✗ uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
687 } else {
688 //Chroma444
689 ✗ uvsx = motion_x & s_mask;
690 ✗ uvsy = motion_y & s_mask;
691 ✗ uvsrc_x = src_x;
692 ✗ uvsrc_y = src_y;
693 }
694 }
695 }
696
697 24814 ptr_y = ref_picture[0] + src_y * linesize + src_x;
698 24814 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
699 24814 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
700
701
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 24814 if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
702
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 24712 (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
703 197 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
704 linesize >> field_based, linesize >> field_based,
705 17, 17 + field_based,
706 src_x, src_y * (1 << field_based), h_edge_pos,
707 v_edge_pos);
708 197 ptr_y = s->sc.edge_emu_buffer;
709 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
710 197 uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
711 197 uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
712
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 197 if (s->workaround_bugs & FF_BUG_IEDGE)
713 ✗ vbuf -= s->uvlinesize;
714 197 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
715 uvlinesize >> field_based, uvlinesize >> field_based,
716 9, 9 + field_based,
717 uvsrc_x, uvsrc_y * (1 << field_based),
718 h_edge_pos >> 1, v_edge_pos >> 1);
719 197 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
720 uvlinesize >> field_based,uvlinesize >> field_based,
721 9, 9 + field_based,
722 uvsrc_x, uvsrc_y * (1 << field_based),
723 h_edge_pos >> 1, v_edge_pos >> 1);
724 197 ptr_cb = ubuf;
725 197 ptr_cr = vbuf;
726 }
727 }
728
729 // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
730
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 24814 if (bottom_field) {
731 ✗ dest_y += s->linesize;
732 ✗ dest_cb += s->uvlinesize;
733 ✗ dest_cr += s->uvlinesize;
734 }
735
736
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 24814 if (field_select) {
737 ✗ ptr_y += s->linesize;
738 ✗ ptr_cb += s->uvlinesize;
739 ✗ ptr_cr += s->uvlinesize;
740 }
741
742 24814 sx = (sx << 2) >> lowres;
743 24814 sy = (sy << 2) >> lowres;
744 24814 pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
745
746 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
747
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 24814 int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
748 24814 uvsx = (uvsx << 2) >> lowres;
749 24814 uvsy = (uvsy << 2) >> lowres;
750
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 24814 if (hc) {
751 24814 pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
752 24814 pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
753 }
754 }
755 // FIXME h261 lowres loop filter
756 24814 }
757
758 31575 static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
759 uint8_t *dest_cb, uint8_t *dest_cr,
760 uint8_t *const *ref_picture,
761 const h264_chroma_mc_func * pix_op,
762 int mx, int my)
763 {
764 31575 const int lowres = s->avctx->lowres;
765 31575 const int op_index = FFMIN(lowres, 3);
766 31575 const int block_s = 8 >> lowres;
767 31575 const int s_mask = (2 << lowres) - 1;
768 31575 const int h_edge_pos = s->h_edge_pos >> lowres + 1;
769 31575 const int v_edge_pos = s->v_edge_pos >> lowres + 1;
770 31575 int emu = 0, src_x, src_y, sx, sy;
771 ptrdiff_t offset;
772 const uint8_t *ptr;
773
774
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 31575 if (s->quarter_sample) {
775 ✗ mx /= 2;
776 ✗ my /= 2;
777 }
778
779 /* In case of 8X8, we construct a single chroma motion vector
780 with a special rounding */
781 31575 mx = ff_h263_round_chroma(mx);
782 31575 my = ff_h263_round_chroma(my);
783
784 31575 sx = mx & s_mask;
785 31575 sy = my & s_mask;
786 31575 src_x = s->mb_x * block_s + (mx >> lowres + 1);
787 31575 src_y = s->mb_y * block_s + (my >> lowres + 1);
788
789 31575 offset = src_y * s->uvlinesize + src_x;
790 31575 ptr = ref_picture[1] + offset;
791
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 31575 if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
792
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 31575 (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
793 144 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
794 s->uvlinesize, s->uvlinesize,
795 9, 9,
796 src_x, src_y, h_edge_pos, v_edge_pos);
797 144 ptr = s->sc.edge_emu_buffer;
798 144 emu = 1;
799 }
800 31575 sx = (sx << 2) >> lowres;
801 31575 sy = (sy << 2) >> lowres;
802 31575 pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
803
804 31575 ptr = ref_picture[2] + offset;
805
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 31575 if (emu) {
806 144 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
807 s->uvlinesize, s->uvlinesize,
808 9, 9,
809 src_x, src_y, h_edge_pos, v_edge_pos);
810 144 ptr = s->sc.edge_emu_buffer;
811 }
812 31575 pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
813 31575 }
814
815 /**
816 * motion compensation of a single macroblock
817 * @param s context
818 * @param dest_y luma destination pointer
819 * @param dest_cb chroma cb/u destination pointer
820 * @param dest_cr chroma cr/v destination pointer
821 * @param dir direction (0->forward, 1->backward)
822 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
823 * @param pix_op halfpel motion compensation function (average or put normally)
824 * the motion vectors are taken from s->mv and the MV type from s->mv_type
825 */
826 56389 static inline void MPV_motion_lowres(MpegEncContext *s,
827 uint8_t *dest_y, uint8_t *dest_cb,
828 uint8_t *dest_cr,
829 int dir, uint8_t *const *ref_picture,
830 const h264_chroma_mc_func *pix_op)
831 {
832 int mx, my;
833 int mb_x, mb_y;
834 56389 const int lowres = s->avctx->lowres;
835 56389 const int block_s = 8 >>lowres;
836
837 56389 mb_x = s->mb_x;
838 56389 mb_y = s->mb_y;
839
840
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 56389 switch (s->mv_type) {
841 24814 case MV_TYPE_16X16:
842 24814 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
843 0, 0, 0,
844 ref_picture, pix_op,
845 s->mv[dir][0][0], s->mv[dir][0][1],
846 2 * block_s, mb_y);
847 24814 break;
848 31575 case MV_TYPE_8X8:
849 31575 mx = 0;
850 31575 my = 0;
851
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 157875 for (int i = 0; i < 4; i++) {
852 126300 hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
853 126300 s->linesize) * block_s,
854 ref_picture[0], 0, 0,
855 126300 (2 * mb_x + (i & 1)) * block_s,
856 126300 (2 * mb_y + (i >> 1)) * block_s,
857 s->width, s->height, s->linesize,
858 126300 s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
859 block_s, block_s, pix_op,
860 s->mv[dir][i][0], s->mv[dir][i][1]);
861
862 126300 mx += s->mv[dir][i][0];
863 126300 my += s->mv[dir][i][1];
864 }
865
866 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
867 31575 chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
868 pix_op, mx, my);
869 31575 break;
870 ✗ case MV_TYPE_FIELD:
871 ✗ if (s->picture_structure == PICT_FRAME) {
872 /* top field */
873 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
874 1, 0, s->field_select[dir][0],
875 ref_picture, pix_op,
876 s->mv[dir][0][0], s->mv[dir][0][1],
877 block_s, mb_y);
878 /* bottom field */
879 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
880 1, 1, s->field_select[dir][1],
881 ref_picture, pix_op,
882 s->mv[dir][1][0], s->mv[dir][1][1],
883 block_s, mb_y);
884 } else {
885 ✗ if (s->picture_structure != s->field_select[dir][0] + 1 &&
886 ✗ s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
887 ✗ ref_picture = s->current_picture_ptr->f->data;
888
889 }
890 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
891 0, 0, s->field_select[dir][0],
892 ref_picture, pix_op,
893 s->mv[dir][0][0],
894 s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
895 }
896 ✗ break;
897 ✗ case MV_TYPE_16X8:
898 ✗ for (int i = 0; i < 2; i++) {
899 uint8_t *const *ref2picture;
900
901 ✗ if (s->picture_structure == s->field_select[dir][i] + 1 ||
902 ✗ s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
903 ✗ ref2picture = ref_picture;
904 } else {
905 ✗ ref2picture = s->current_picture_ptr->f->data;
906 }
907
908 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
909 0, 0, s->field_select[dir][i],
910 ref2picture, pix_op,
911 ✗ s->mv[dir][i][0], s->mv[dir][i][1] +
912 ✗ 2 * block_s * i, block_s, mb_y >> 1);
913
914 ✗ dest_y += 2 * block_s * s->linesize;
915 ✗ dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
916 ✗ dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
917 }
918 ✗ break;
919 ✗ case MV_TYPE_DMV:
920 ✗ if (s->picture_structure == PICT_FRAME) {
921 ✗ for (int i = 0; i < 2; i++) {
922 ✗ for (int j = 0; j < 2; j++) {
923 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
924 1, j, j ^ i,
925 ref_picture, pix_op,
926 ✗ s->mv[dir][2 * i + j][0],
927 ✗ s->mv[dir][2 * i + j][1],
928 block_s, mb_y);
929 }
930 ✗ pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
931 }
932 } else {
933 ✗ for (int i = 0; i < 2; i++) {
934 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
935 ✗ 0, 0, s->picture_structure != i + 1,
936 ref_picture, pix_op,
937 ✗ s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
938 2 * block_s, mb_y >> 1);
939
940 // after put we make avg of the same block
941 ✗ pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
942
943 // opposite parity is always in the same
944 // frame if this is second field
945 ✗ if (!s->first_field) {
946 ✗ ref_picture = s->current_picture_ptr->f->data;
947 }
948 }
949 }
950 ✗ break;
951 56389 default:
952 av_assert2(0);
953 }
954 56389 }
955
956 /**
957 * find the lowest MB row referenced in the MVs
958 */
959 60133 static int lowest_referenced_row(MpegEncContext *s, int dir)
960 {
961 60133 int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
962 int off, mvs;
963
964
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 60133 if (s->picture_structure != PICT_FRAME || s->mcsel)
965 ✗ goto unhandled;
966
967
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 60133 switch (s->mv_type) {
968 60133 case MV_TYPE_16X16:
969 60133 mvs = 1;
970 60133 break;
971 ✗ case MV_TYPE_16X8:
972 ✗ mvs = 2;
973 ✗ break;
974 ✗ case MV_TYPE_8X8:
975 ✗ mvs = 4;
976 ✗ break;
977 ✗ default:
978 ✗ goto unhandled;
979 }
980
981
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 120266 for (int i = 0; i < mvs; i++) {
982 60133 int my = s->mv[dir][i][1];
983 60133 my_max = FFMAX(my_max, my);
984 60133 my_min = FFMIN(my_min, my);
985 }
986
987 60133 off = ((FFMAX(-my_min, my_max) << qpel_shift) + 63) >> 6;
988
989 60133 return av_clip(s->mb_y + off, 0, s->mb_height - 1);
990 ✗ unhandled:
991 ✗ return s->mb_height - 1;
992 }
993
994 /* add block[] to dest[] */
995 22441896 static inline void add_dct(MpegEncContext *s,
996 int16_t *block, int i, uint8_t *dest, int line_size)
997 {
998
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 22441896 if (s->block_last_index[i] >= 0) {
999 8244919 s->idsp.idct_add(dest, line_size, block);
1000 }
1001 22441896 }
1002
1003 #define IS_ENCODER 0
1004 #include "mpv_reconstruct_mb_template.c"
1005
1006 5071059 void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
1007 {
1008
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 5071059 if (s->avctx->debug & FF_DEBUG_DCT_COEFF) {
1009 /* print DCT coefficients */
1010 ✗ av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
1011 ✗ for (int i = 0; i < 6; i++) {
1012 ✗ for (int j = 0; j < 64; j++) {
1013 ✗ av_log(s->avctx, AV_LOG_DEBUG, "%5d",
1014 ✗ block[i][s->idsp.idct_permutation[j]]);
1015 }
1016 ✗ av_log(s->avctx, AV_LOG_DEBUG, "\n");
1017 }
1018 }
1019
1020
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 5071059 if (!s->avctx->lowres) {
1021 #if !CONFIG_SMALL
1022
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 5027559 if (s->out_format == FMT_MPEG1)
1023 2549289 mpv_reconstruct_mb_internal(s, block, 0, DEFINITELY_MPEG12);
1024 else
1025 2478270 mpv_reconstruct_mb_internal(s, block, 0, NOT_MPEG12);
1026 #else
1027 mpv_reconstruct_mb_internal(s, block, 0, MAY_BE_MPEG12);
1028 #endif
1029 } else
1030 43500 mpv_reconstruct_mb_internal(s, block, 1, MAY_BE_MPEG12);
1031 5071059 }
1032