FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/mpegvideo_dec.c
Date: 2023-10-02 11:06:47
Exec Total Coverage
Lines: 375 546 68.7%
Functions: 18 19 94.7%
Branches: 206 366 56.3%
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/emms.h"
29 #include "libavutil/imgutils.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/video_enc_params.h"
32
33 #include "avcodec.h"
34 #include "h264chroma.h"
35 #include "internal.h"
36 #include "mpegutils.h"
37 #include "mpegvideo.h"
38 #include "mpegvideodec.h"
39 #include "mpeg4videodec.h"
40 #include "thread.h"
41 #include "threadframe.h"
42 #include "wmv2dec.h"
43
44 613 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
45 {
46 613 ff_mpv_common_defaults(s);
47
48 613 s->avctx = avctx;
49 613 s->width = avctx->coded_width;
50 613 s->height = avctx->coded_height;
51 613 s->codec_id = avctx->codec->id;
52 613 s->workaround_bugs = avctx->workaround_bugs;
53
54 /* convert fourcc to upper case */
55 613 s->codec_tag = ff_toupper4(avctx->codec_tag);
56
57 613 ff_h264chroma_init(&s->h264chroma, 8); //for lowres
58 613 }
59
60 18 int ff_mpeg_update_thread_context(AVCodecContext *dst,
61 const AVCodecContext *src)
62 {
63 18 MpegEncContext *const s1 = src->priv_data;
64 18 MpegEncContext *const s = dst->priv_data;
65 int ret;
66
67
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 18 if (dst == src)
68 ✗ return 0;
69
70
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 18 av_assert0(s != s1);
71
72 // FIXME can parameters change on I-frames?
73 // in that case dst may need a reinit
74
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 18 if (!s->context_initialized) {
75 8 void *private_ctx = s->private_ctx;
76 int err;
77 8 memcpy(s, s1, sizeof(*s));
78
79 8 s->avctx = dst;
80 8 s->private_ctx = private_ctx;
81 8 s->bitstream_buffer = NULL;
82 8 s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
83
84
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 8 if (s1->context_initialized) {
85 8 ff_mpv_idct_init(s);
86
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 8 if ((err = ff_mpv_common_init(s)) < 0) {
87 ✗ memset(s, 0, sizeof(*s));
88 ✗ s->avctx = dst;
89 ✗ s->private_ctx = private_ctx;
90 ✗ memcpy(&s->h264chroma, &s1->h264chroma, sizeof(s->h264chroma));
91 ✗ return err;
92 }
93 }
94 }
95
96
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 18 if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
97 ✗ s->height = s1->height;
98 ✗ s->width = s1->width;
99 ✗ if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
100 ✗ return ret;
101 }
102
103 18 s->quarter_sample = s1->quarter_sample;
104
105 18 s->coded_picture_number = s1->coded_picture_number;
106 18 s->picture_number = s1->picture_number;
107
108
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 18 av_assert0(!s->picture || s->picture != s1->picture);
109
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 18 if (s->picture)
110
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 666 for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
111 648 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
112
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 683 if (s1->picture && s1->picture[i].f->buf[0] &&
113 35 (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
114 ✗ return ret;
115 }
116
117 #define UPDATE_PICTURE(pic)\
118 do {\
119 ff_mpeg_unref_picture(s->avctx, &s->pic);\
120 if (s1->pic.f && s1->pic.f->buf[0])\
121 ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
122 else\
123 ret = ff_update_picture_tables(&s->pic, &s1->pic);\
124 if (ret < 0)\
125 return ret;\
126 } while (0)
127
128
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 18 UPDATE_PICTURE(current_picture);
129
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 18 UPDATE_PICTURE(last_picture);
130
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 18 UPDATE_PICTURE(next_picture);
131
132 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
133 ((pic && pic >= old_ctx->picture && \
134 pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
135 &new_ctx->picture[pic - old_ctx->picture] : NULL)
136
137
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 18 s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
138
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 18 s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
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 18 s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
140
141 // Error/bug resilience
142 18 s->workaround_bugs = s1->workaround_bugs;
143 18 s->padding_bug_score = s1->padding_bug_score;
144
145 // MPEG-4 timing info
146 18 memcpy(&s->last_time_base, &s1->last_time_base,
147 18 (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
148 18 (char *) &s1->last_time_base);
149
150 // B-frame info
151 18 s->max_b_frames = s1->max_b_frames;
152 18 s->low_delay = s1->low_delay;
153 18 s->droppable = s1->droppable;
154
155 // DivX handling (doesn't work)
156 18 s->divx_packed = s1->divx_packed;
157
158
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 18 if (s1->bitstream_buffer) {
159 ✗ av_fast_padded_malloc(&s->bitstream_buffer,
160 &s->allocated_bitstream_buffer_size,
161 ✗ s1->bitstream_buffer_size);
162 ✗ if (!s->bitstream_buffer) {
163 ✗ s->bitstream_buffer_size = 0;
164 ✗ return AVERROR(ENOMEM);
165 }
166 ✗ s->bitstream_buffer_size = s1->bitstream_buffer_size;
167 ✗ memcpy(s->bitstream_buffer, s1->bitstream_buffer,
168 ✗ s1->bitstream_buffer_size);
169 }
170
171 // linesize-dependent scratch buffer allocation
172
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 18 if (!s->sc.edge_emu_buffer)
173
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 8 if (s1->linesize) {
174
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 8 if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
175 8 &s->sc, s1->linesize) < 0) {
176 ✗ av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
177 "scratch buffers.\n");
178 ✗ return AVERROR(ENOMEM);
179 }
180 } else {
181 ✗ av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
182 "be allocated due to unknown size.\n");
183 }
184
185 // MPEG-2/interlacing info
186 18 memcpy(&s->progressive_sequence, &s1->progressive_sequence,
187 (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
188
189 18 return 0;
190 }
191
192 42 int ff_mpv_common_frame_size_change(MpegEncContext *s)
193 {
194 42 int err = 0;
195
196
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 42 if (!s->context_initialized)
197 ✗ return AVERROR(EINVAL);
198
199 42 ff_mpv_free_context_frame(s);
200
201
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 42 if (s->picture)
202
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 1554 for (int i = 0; i < MAX_PICTURE_COUNT; i++)
203 1512 s->picture[i].needs_realloc = 1;
204
205 42 s->last_picture_ptr =
206 42 s->next_picture_ptr =
207 42 s->current_picture_ptr = NULL;
208
209
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 84 if ((s->width || s->height) &&
210 42 (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
211 ✗ goto fail;
212
213 /* set chroma shifts */
214 42 err = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
215 &s->chroma_x_shift,
216 &s->chroma_y_shift);
217
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 42 if (err < 0)
218 ✗ goto fail;
219
220
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 42 if ((err = ff_mpv_init_context_frame(s)))
221 ✗ goto fail;
222
223 42 memset(s->thread_context, 0, sizeof(s->thread_context));
224 42 s->thread_context[0] = s;
225
226
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 42 if (s->width && s->height) {
227 42 err = ff_mpv_init_duplicate_contexts(s);
228
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 42 if (err < 0)
229 ✗ goto fail;
230 }
231 42 s->context_reinit = 0;
232
233 42 return 0;
234 ✗ fail:
235 ✗ ff_mpv_free_context_frame(s);
236 ✗ s->context_reinit = 1;
237 ✗ return err;
238 }
239
240 11109 static int alloc_picture(MpegEncContext *s, Picture *pic)
241 {
242 22218 return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, 0, 0,
243 11109 s->chroma_x_shift, s->chroma_y_shift, s->out_format,
244 s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
245 &s->linesize, &s->uvlinesize);
246 }
247
248 ✗ static void gray_frame(AVFrame *frame)
249 {
250 int h_chroma_shift, v_chroma_shift;
251
252 ✗ av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
253
254 ✗ for (int i = 0; i < frame->height; i++)
255 ✗ memset(frame->data[0] + frame->linesize[0] * i, 0x80, frame->width);
256 ✗ for (int i = 0; i < AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
257 ✗ memset(frame->data[1] + frame->linesize[1] * i,
258 ✗ 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
259 ✗ memset(frame->data[2] + frame->linesize[2] * i,
260 ✗ 0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
261 }
262 ✗ }
263
264 /**
265 * generic function called after decoding
266 * the header and before a frame is decoded.
267 */
268 11103 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
269 {
270 Picture *pic;
271 int idx, ret;
272
273 11103 s->mb_skipped = 0;
274
275
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 11103 if (!ff_thread_can_start_frame(avctx)) {
276 ✗ av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
277 ✗ return -1;
278 }
279
280 /* mark & release old frames */
281
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 11103 if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
282
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 7938 s->last_picture_ptr != s->next_picture_ptr &&
283
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 7938 s->last_picture_ptr->f->buf[0]) {
284 7938 ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
285 }
286
287 /* release non reference/forgotten frames */
288
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 410811 for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
289
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 399708 if (!s->picture[i].reference ||
290
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 13476 (&s->picture[i] != s->last_picture_ptr &&
291
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 10828 &s->picture[i] != s->next_picture_ptr &&
292
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 30 !s->picture[i].needs_realloc)) {
293 386232 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
294 }
295 }
296
297 11103 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
298 11103 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
299 11103 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
300
301
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 11103 if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
302 // we already have an unused image
303 // (maybe it was set before reading the header)
304 1153 pic = s->current_picture_ptr;
305 } else {
306 9950 idx = ff_find_unused_picture(s->avctx, s->picture, 0);
307
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 9950 if (idx < 0) {
308 ✗ av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
309 ✗ return idx;
310 }
311 9950 pic = &s->picture[idx];
312 }
313
314 11103 pic->reference = 0;
315
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 11103 if (!s->droppable) {
316
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 11103 if (s->pict_type != AV_PICTURE_TYPE_B)
317 8455 pic->reference = 3;
318 }
319
320 #if FF_API_FRAME_PICTURE_NUMBER
321 FF_DISABLE_DEPRECATION_WARNINGS
322 11103 pic->f->coded_picture_number = s->coded_picture_number++;
323 FF_ENABLE_DEPRECATION_WARNINGS
324 #endif
325
326
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 11103 if (alloc_picture(s, pic) < 0)
327 ✗ return -1;
328
329 11103 s->current_picture_ptr = pic;
330 // FIXME use only the vars from current_pic
331
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 11103 s->current_picture_ptr->f->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST * !!s->top_field_first;
332
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 11103 if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
333
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 10623 s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
334
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 3833 if (s->picture_structure != PICT_FRAME)
335 698 s->current_picture_ptr->f->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST *
336
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 698 ((s->picture_structure == PICT_TOP_FIELD) == s->first_field);
337 }
338
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 13372 s->current_picture_ptr->f->flags |= AV_FRAME_FLAG_INTERLACED * (!s->progressive_frame &&
339
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 2269 !s->progressive_sequence);
340 11103 s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
341
342 11103 s->current_picture_ptr->f->pict_type = s->pict_type;
343
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 11103 if (s->pict_type == AV_PICTURE_TYPE_I)
344 1215 s->current_picture_ptr->f->flags |= AV_FRAME_FLAG_KEY;
345 else
346 9888 s->current_picture_ptr->f->flags &= ~AV_FRAME_FLAG_KEY;
347
348
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 11103 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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 11103 if (s->pict_type != AV_PICTURE_TYPE_B) {
353 8455 s->last_picture_ptr = s->next_picture_ptr;
354
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 8455 if (!s->droppable)
355 8455 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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 11103 if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
365
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 305 (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->flags &= ~AV_FRAME_FLAG_KEY;
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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 11103 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->flags &= ~AV_FRAME_FLAG_KEY;
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
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 11103 if (s->last_picture_ptr) {
439
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 21608 if (s->last_picture_ptr->f->buf[0] &&
440 10804 (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
441 s->last_picture_ptr)) < 0)
442 ✗ return ret;
443 }
444
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445
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 22206 if (s->next_picture_ptr->f->buf[0] &&
446 11103 (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
447 s->next_picture_ptr)) < 0)
448 ✗ return ret;
449 }
450
451
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 11103 av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
452 s->last_picture_ptr->f->buf[0]));
453
454
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 11103 if (s->picture_structure != PICT_FRAME) {
455
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 3490 for (int i = 0; i < 4; i++) {
456
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 2792 if (s->picture_structure == PICT_BOTTOM_FIELD) {
457
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 2784 s->current_picture.f->data[i] = FF_PTR_ADD(s->current_picture.f->data[i],
458 s->current_picture.f->linesize[i]);
459 }
460 2792 s->current_picture.f->linesize[i] *= 2;
461 2792 s->last_picture.f->linesize[i] *= 2;
462 2792 s->next_picture.f->linesize[i] *= 2;
463 }
464 }
465
466 /* set dequantizer, we can't do it during init as
467 * it might change for MPEG-4 and we can't do it in the header
468 * decode as init is not called for MPEG-4 there yet */
469
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 11103 if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
470 3393 s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
471 3393 s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
472
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 7710 } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
473 7230 s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
474 7230 s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
475 } else {
476 480 s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
477 480 s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
478 }
479
480
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 11103 if (s->avctx->debug & FF_DEBUG_NOMC)
481 ✗ gray_frame(s->current_picture_ptr->f);
482
483 11103 return 0;
484 }
485
486 /* called after a frame has been decoded. */
487 11103 void ff_mpv_frame_end(MpegEncContext *s)
488 {
489 11103 emms_c();
490
491
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 11103 if (s->current_picture.reference)
492 8455 ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
493 11103 }
494
495 10881 void ff_print_debug_info(const MpegEncContext *s, const Picture *p, AVFrame *pict)
496 {
497 10881 ff_print_debug_info2(s->avctx, pict, s->mbskip_table, p->mb_type,
498 10881 p->qscale_table, p->motion_val,
499 10881 s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
500 10881 }
501
502 10148 int ff_mpv_export_qp_table(const MpegEncContext *s, AVFrame *f, const Picture *p, int qp_type)
503 {
504 AVVideoEncParams *par;
505
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 10148 int mult = (qp_type == FF_MPV_QSCALE_TYPE_MPEG1) ? 2 : 1;
506 10148 unsigned int nb_mb = p->alloc_mb_height * p->alloc_mb_width;
507
508
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 10148 if (!(s->avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS))
509 10133 return 0;
510
511 15 par = av_video_enc_params_create_side_data(f, AV_VIDEO_ENC_PARAMS_MPEG2, nb_mb);
512
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 15 if (!par)
513 ✗ return AVERROR(ENOMEM);
514
515
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 285 for (unsigned y = 0; y < p->alloc_mb_height; y++)
516
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 6210 for (unsigned x = 0; x < p->alloc_mb_width; x++) {
517 5940 const unsigned int block_idx = y * p->alloc_mb_width + x;
518 5940 const unsigned int mb_xy = y * p->alloc_mb_stride + x;
519 5940 AVVideoBlockParams *const b = av_video_enc_params_block(par, block_idx);
520
521 5940 b->src_x = x * 16;
522 5940 b->src_y = y * 16;
523 5940 b->w = 16;
524 5940 b->h = 16;
525
526 5940 b->delta_qp = p->qscale_table[mb_xy] * mult;
527 }
528
529 15 return 0;
530 }
531
532 168023 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
533 {
534 168023 ff_draw_horiz_band(s->avctx, s->current_picture_ptr->f,
535
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 168023 s->last_picture_ptr ? s->last_picture_ptr->f : NULL,
536 y, h, s->picture_structure,
537 s->first_field, s->low_delay);
538 168023 }
539
540 81 void ff_mpeg_flush(AVCodecContext *avctx)
541 {
542 81 MpegEncContext *const s = avctx->priv_data;
543
544
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 81 if (!s->picture)
545 ✗ return;
546
547
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 2997 for (int i = 0; i < MAX_PICTURE_COUNT; i++)
548 2916 ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
549 81 s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
550
551 81 ff_mpeg_unref_picture(s->avctx, &s->current_picture);
552 81 ff_mpeg_unref_picture(s->avctx, &s->last_picture);
553 81 ff_mpeg_unref_picture(s->avctx, &s->next_picture);
554
555 81 s->mb_x = s->mb_y = 0;
556
557 81 s->bitstream_buffer_size = 0;
558 81 s->pp_time = 0;
559 }
560
561 168023 void ff_mpv_report_decode_progress(MpegEncContext *s)
562 {
563
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 168023 if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
564 122136 ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
565 168023 }
566
567
568 126300 static inline int hpel_motion_lowres(MpegEncContext *s,
569 uint8_t *dest, const uint8_t *src,
570 int field_based, int field_select,
571 int src_x, int src_y,
572 int width, int height, ptrdiff_t stride,
573 int h_edge_pos, int v_edge_pos,
574 int w, int h, const h264_chroma_mc_func *pix_op,
575 int motion_x, int motion_y)
576 {
577 126300 const int lowres = s->avctx->lowres;
578 126300 const int op_index = FFMIN(lowres, 3);
579 126300 const int s_mask = (2 << lowres) - 1;
580 126300 int emu = 0;
581 int sx, sy;
582
583
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 126300 if (s->quarter_sample) {
584 ✗ motion_x /= 2;
585 ✗ motion_y /= 2;
586 }
587
588 126300 sx = motion_x & s_mask;
589 126300 sy = motion_y & s_mask;
590 126300 src_x += motion_x >> lowres + 1;
591 126300 src_y += motion_y >> lowres + 1;
592
593 126300 src += src_y * stride + src_x;
594
595
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 126300 if ((unsigned)src_x > FFMAX( h_edge_pos - (!!sx) - w, 0) ||
596
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 126300 (unsigned)src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
597 298 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
598 s->linesize, s->linesize,
599 298 w + 1, (h + 1) << field_based,
600 src_x, src_y * (1 << field_based),
601 h_edge_pos, v_edge_pos);
602 298 src = s->sc.edge_emu_buffer;
603 298 emu = 1;
604 }
605
606 126300 sx = (sx << 2) >> lowres;
607 126300 sy = (sy << 2) >> lowres;
608
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 126300 if (field_select)
609 ✗ src += s->linesize;
610 126300 pix_op[op_index](dest, src, stride, h, sx, sy);
611 126300 return emu;
612 }
613
614 /* apply one mpeg motion vector to the three components */
615 24814 static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
616 uint8_t *dest_y,
617 uint8_t *dest_cb,
618 uint8_t *dest_cr,
619 int field_based,
620 int bottom_field,
621 int field_select,
622 uint8_t *const *ref_picture,
623 const h264_chroma_mc_func *pix_op,
624 int motion_x, int motion_y,
625 int h, int mb_y)
626 {
627 const uint8_t *ptr_y, *ptr_cb, *ptr_cr;
628 int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, sx, sy, uvsx, uvsy;
629 ptrdiff_t uvlinesize, linesize;
630 24814 const int lowres = s->avctx->lowres;
631 24814 const int op_index = FFMIN(lowres - 1 + s->chroma_x_shift, 3);
632 24814 const int block_s = 8 >> lowres;
633 24814 const int s_mask = (2 << lowres) - 1;
634 24814 const int h_edge_pos = s->h_edge_pos >> lowres;
635 24814 const int v_edge_pos = s->v_edge_pos >> lowres;
636
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 24814 int hc = s->chroma_y_shift ? (h+1-bottom_field)>>1 : h;
637 24814 linesize = s->current_picture.f->linesize[0] << field_based;
638 24814 uvlinesize = s->current_picture.f->linesize[1] << field_based;
639
640 // FIXME obviously not perfect but qpel will not work in lowres anyway
641
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 24814 if (s->quarter_sample) {
642 ✗ motion_x /= 2;
643 ✗ motion_y /= 2;
644 }
645
646
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 24814 if (field_based) {
647 ✗ motion_y += (bottom_field - field_select)*((1 << lowres)-1);
648 }
649
650 24814 sx = motion_x & s_mask;
651 24814 sy = motion_y & s_mask;
652 24814 src_x = s->mb_x * 2 * block_s + (motion_x >> lowres + 1);
653 24814 src_y = (mb_y * 2 * block_s >> field_based) + (motion_y >> lowres + 1);
654
655
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 24814 if (s->out_format == FMT_H263) {
656 24814 uvsx = ((motion_x >> 1) & s_mask) | (sx & 1);
657 24814 uvsy = ((motion_y >> 1) & s_mask) | (sy & 1);
658 24814 uvsrc_x = src_x >> 1;
659 24814 uvsrc_y = src_y >> 1;
660 ✗ } else if (s->out_format == FMT_H261) {
661 // even chroma mv's are full pel in H261
662 ✗ mx = motion_x / 4;
663 ✗ my = motion_y / 4;
664 ✗ uvsx = (2 * mx) & s_mask;
665 ✗ uvsy = (2 * my) & s_mask;
666 ✗ uvsrc_x = s->mb_x * block_s + (mx >> lowres);
667 ✗ uvsrc_y = mb_y * block_s + (my >> lowres);
668 } else {
669 ✗ if (s->chroma_y_shift) {
670 ✗ mx = motion_x / 2;
671 ✗ my = motion_y / 2;
672 ✗ uvsx = mx & s_mask;
673 ✗ uvsy = my & s_mask;
674 ✗ uvsrc_x = s->mb_x * block_s + (mx >> lowres + 1);
675 ✗ uvsrc_y = (mb_y * block_s >> field_based) + (my >> lowres + 1);
676 } else {
677 ✗ if (s->chroma_x_shift) {
678 //Chroma422
679 ✗ mx = motion_x / 2;
680 ✗ uvsx = mx & s_mask;
681 ✗ uvsy = motion_y & s_mask;
682 ✗ uvsrc_y = src_y;
683 ✗ uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
684 } else {
685 //Chroma444
686 ✗ uvsx = motion_x & s_mask;
687 ✗ uvsy = motion_y & s_mask;
688 ✗ uvsrc_x = src_x;
689 ✗ uvsrc_y = src_y;
690 }
691 }
692 }
693
694 24814 ptr_y = ref_picture[0] + src_y * linesize + src_x;
695 24814 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
696 24814 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
697
698
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 24814 if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
699
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 24712 (unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - FFMAX(h, hc<<s->chroma_y_shift), 0)) {
700 197 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
701 linesize >> field_based, linesize >> field_based,
702 17, 17 + field_based,
703 src_x, src_y * (1 << field_based), h_edge_pos,
704 v_edge_pos);
705 197 ptr_y = s->sc.edge_emu_buffer;
706 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
707 197 uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
708 197 uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
709
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 197 if (s->workaround_bugs & FF_BUG_IEDGE)
710 ✗ vbuf -= s->uvlinesize;
711 197 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
712 uvlinesize >> field_based, uvlinesize >> field_based,
713 9, 9 + field_based,
714 uvsrc_x, uvsrc_y * (1 << field_based),
715 h_edge_pos >> 1, v_edge_pos >> 1);
716 197 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
717 uvlinesize >> field_based,uvlinesize >> field_based,
718 9, 9 + field_based,
719 uvsrc_x, uvsrc_y * (1 << field_based),
720 h_edge_pos >> 1, v_edge_pos >> 1);
721 197 ptr_cb = ubuf;
722 197 ptr_cr = vbuf;
723 }
724 }
725
726 // FIXME use this for field pix too instead of the obnoxious hack which changes picture.f->data
727
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 24814 if (bottom_field) {
728 ✗ dest_y += s->linesize;
729 ✗ dest_cb += s->uvlinesize;
730 ✗ dest_cr += s->uvlinesize;
731 }
732
733
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 24814 if (field_select) {
734 ✗ ptr_y += s->linesize;
735 ✗ ptr_cb += s->uvlinesize;
736 ✗ ptr_cr += s->uvlinesize;
737 }
738
739 24814 sx = (sx << 2) >> lowres;
740 24814 sy = (sy << 2) >> lowres;
741 24814 pix_op[lowres - 1](dest_y, ptr_y, linesize, h, sx, sy);
742
743 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
744 24814 uvsx = (uvsx << 2) >> lowres;
745 24814 uvsy = (uvsy << 2) >> lowres;
746
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 24814 if (hc) {
747 24814 pix_op[op_index](dest_cb, ptr_cb, uvlinesize, hc, uvsx, uvsy);
748 24814 pix_op[op_index](dest_cr, ptr_cr, uvlinesize, hc, uvsx, uvsy);
749 }
750 }
751 // FIXME h261 lowres loop filter
752 24814 }
753
754 31575 static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
755 uint8_t *dest_cb, uint8_t *dest_cr,
756 uint8_t *const *ref_picture,
757 const h264_chroma_mc_func * pix_op,
758 int mx, int my)
759 {
760 31575 const int lowres = s->avctx->lowres;
761 31575 const int op_index = FFMIN(lowres, 3);
762 31575 const int block_s = 8 >> lowres;
763 31575 const int s_mask = (2 << lowres) - 1;
764 31575 const int h_edge_pos = s->h_edge_pos >> lowres + 1;
765 31575 const int v_edge_pos = s->v_edge_pos >> lowres + 1;
766 31575 int emu = 0, src_x, src_y, sx, sy;
767 ptrdiff_t offset;
768 const uint8_t *ptr;
769
770
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 31575 if (s->quarter_sample) {
771 ✗ mx /= 2;
772 ✗ my /= 2;
773 }
774
775 /* In case of 8X8, we construct a single chroma motion vector
776 with a special rounding */
777 31575 mx = ff_h263_round_chroma(mx);
778 31575 my = ff_h263_round_chroma(my);
779
780 31575 sx = mx & s_mask;
781 31575 sy = my & s_mask;
782 31575 src_x = s->mb_x * block_s + (mx >> lowres + 1);
783 31575 src_y = s->mb_y * block_s + (my >> lowres + 1);
784
785 31575 offset = src_y * s->uvlinesize + src_x;
786 31575 ptr = ref_picture[1] + offset;
787
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 31575 if ((unsigned) src_x > FFMAX(h_edge_pos - (!!sx) - block_s, 0) ||
788
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 31575 (unsigned) src_y > FFMAX(v_edge_pos - (!!sy) - block_s, 0)) {
789 144 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
790 s->uvlinesize, s->uvlinesize,
791 9, 9,
792 src_x, src_y, h_edge_pos, v_edge_pos);
793 144 ptr = s->sc.edge_emu_buffer;
794 144 emu = 1;
795 }
796 31575 sx = (sx << 2) >> lowres;
797 31575 sy = (sy << 2) >> lowres;
798 31575 pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
799
800 31575 ptr = ref_picture[2] + offset;
801
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 31575 if (emu) {
802 144 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
803 s->uvlinesize, s->uvlinesize,
804 9, 9,
805 src_x, src_y, h_edge_pos, v_edge_pos);
806 144 ptr = s->sc.edge_emu_buffer;
807 }
808 31575 pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
809 31575 }
810
811 /**
812 * motion compensation of a single macroblock
813 * @param s context
814 * @param dest_y luma destination pointer
815 * @param dest_cb chroma cb/u destination pointer
816 * @param dest_cr chroma cr/v destination pointer
817 * @param dir direction (0->forward, 1->backward)
818 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
819 * @param pix_op halfpel motion compensation function (average or put normally)
820 * the motion vectors are taken from s->mv and the MV type from s->mv_type
821 */
822 56389 static inline void MPV_motion_lowres(MpegEncContext *s,
823 uint8_t *dest_y, uint8_t *dest_cb,
824 uint8_t *dest_cr,
825 int dir, uint8_t *const *ref_picture,
826 const h264_chroma_mc_func *pix_op)
827 {
828 int mx, my;
829 int mb_x, mb_y;
830 56389 const int lowres = s->avctx->lowres;
831 56389 const int block_s = 8 >>lowres;
832
833 56389 mb_x = s->mb_x;
834 56389 mb_y = s->mb_y;
835
836
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 56389 switch (s->mv_type) {
837 24814 case MV_TYPE_16X16:
838 24814 mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
839 0, 0, 0,
840 ref_picture, pix_op,
841 s->mv[dir][0][0], s->mv[dir][0][1],
842 2 * block_s, mb_y);
843 24814 break;
844 31575 case MV_TYPE_8X8:
845 31575 mx = 0;
846 31575 my = 0;
847
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 157875 for (int i = 0; i < 4; i++) {
848 126300 hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) *
849 126300 s->linesize) * block_s,
850 ref_picture[0], 0, 0,
851 126300 (2 * mb_x + (i & 1)) * block_s,
852 126300 (2 * mb_y + (i >> 1)) * block_s,
853 s->width, s->height, s->linesize,
854 126300 s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
855 block_s, block_s, pix_op,
856 s->mv[dir][i][0], s->mv[dir][i][1]);
857
858 126300 mx += s->mv[dir][i][0];
859 126300 my += s->mv[dir][i][1];
860 }
861
862 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
863 31575 chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture,
864 pix_op, mx, my);
865 31575 break;
866 ✗ case MV_TYPE_FIELD:
867 ✗ if (s->picture_structure == PICT_FRAME) {
868 /* top field */
869 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
870 1, 0, s->field_select[dir][0],
871 ref_picture, pix_op,
872 s->mv[dir][0][0], s->mv[dir][0][1],
873 block_s, mb_y);
874 /* bottom field */
875 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
876 1, 1, s->field_select[dir][1],
877 ref_picture, pix_op,
878 s->mv[dir][1][0], s->mv[dir][1][1],
879 block_s, mb_y);
880 } else {
881 ✗ if ( s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != AV_PICTURE_TYPE_B && !s->first_field
882 ✗ || !ref_picture[0]) {
883 ✗ ref_picture = s->current_picture_ptr->f->data;
884 }
885 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
886 0, 0, s->field_select[dir][0],
887 ref_picture, pix_op,
888 s->mv[dir][0][0],
889 s->mv[dir][0][1], 2 * block_s, mb_y >> 1);
890 }
891 ✗ break;
892 ✗ case MV_TYPE_16X8:
893 ✗ for (int i = 0; i < 2; i++) {
894 uint8_t *const *ref2picture;
895
896 ✗ if ((s->picture_structure == s->field_select[dir][i] + 1 ||
897 ✗ s->pict_type == AV_PICTURE_TYPE_B || s->first_field) &&
898 ✗ ref_picture[0]) {
899 ✗ ref2picture = ref_picture;
900 } else {
901 ✗ ref2picture = s->current_picture_ptr->f->data;
902 }
903
904 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
905 0, 0, s->field_select[dir][i],
906 ref2picture, pix_op,
907 ✗ s->mv[dir][i][0], s->mv[dir][i][1] +
908 ✗ 2 * block_s * i, block_s, mb_y >> 1);
909
910 ✗ dest_y += 2 * block_s * s->linesize;
911 ✗ dest_cb += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
912 ✗ dest_cr += (2 * block_s >> s->chroma_y_shift) * s->uvlinesize;
913 }
914 ✗ break;
915 ✗ case MV_TYPE_DMV:
916 ✗ if (s->picture_structure == PICT_FRAME) {
917 ✗ for (int i = 0; i < 2; i++) {
918 ✗ for (int j = 0; j < 2; j++) {
919 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
920 1, j, j ^ i,
921 ref_picture, pix_op,
922 ✗ s->mv[dir][2 * i + j][0],
923 ✗ s->mv[dir][2 * i + j][1],
924 block_s, mb_y);
925 }
926 ✗ pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
927 }
928 } else {
929 ✗ if (!ref_picture[0]) {
930 ✗ ref_picture = s->current_picture_ptr->f->data;
931 }
932 ✗ for (int i = 0; i < 2; i++) {
933 ✗ mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
934 ✗ 0, 0, s->picture_structure != i + 1,
935 ref_picture, pix_op,
936 ✗ s->mv[dir][2 * i][0],s->mv[dir][2 * i][1],
937 2 * block_s, mb_y >> 1);
938
939 // after put we make avg of the same block
940 ✗ pix_op = s->h264chroma.avg_h264_chroma_pixels_tab;
941
942 // opposite parity is always in the same
943 // frame if this is second field
944 ✗ if (!s->first_field) {
945 ✗ ref_picture = s->current_picture_ptr->f->data;
946 }
947 }
948 }
949 ✗ break;
950 56389 default:
951 av_assert2(0);
952 }
953 56389 }
954
955 /**
956 * find the lowest MB row referenced in the MVs
957 */
958 60133 static int lowest_referenced_row(MpegEncContext *s, int dir)
959 {
960 60133 int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample;
961 int off, mvs;
962
963
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 60133 if (s->picture_structure != PICT_FRAME || s->mcsel)
964 ✗ goto unhandled;
965
966
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 60133 switch (s->mv_type) {
967 60133 case MV_TYPE_16X16:
968 60133 mvs = 1;
969 60133 break;
970 ✗ case MV_TYPE_16X8:
971 ✗ mvs = 2;
972 ✗ break;
973 ✗ case MV_TYPE_8X8:
974 ✗ mvs = 4;
975 ✗ break;
976 ✗ default:
977 ✗ goto unhandled;
978 }
979
980
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 120266 for (int i = 0; i < mvs; i++) {
981 60133 int my = s->mv[dir][i][1];
982 60133 my_max = FFMAX(my_max, my);
983 60133 my_min = FFMIN(my_min, my);
984 }
985
986 60133 off = ((FFMAX(-my_min, my_max) << qpel_shift) + 63) >> 6;
987
988 60133 return av_clip(s->mb_y + off, 0, s->mb_height - 1);
989 ✗ unhandled:
990 ✗ return s->mb_height - 1;
991 }
992
993 /* add block[] to dest[] */
994 22490334 static inline void add_dct(MpegEncContext *s,
995 int16_t *block, int i, uint8_t *dest, int line_size)
996 {
997
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 22490334 if (s->block_last_index[i] >= 0) {
998 8260711 s->idsp.idct_add(dest, line_size, block);
999 }
1000 22490334 }
1001
1002 #define IS_ENCODER 0
1003 #include "mpv_reconstruct_mb_template.c"
1004
1005 5080509 void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
1006 {
1007
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 5080509 if (s->avctx->debug & FF_DEBUG_DCT_COEFF) {
1008 /* print DCT coefficients */
1009 ✗ av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
1010 ✗ for (int i = 0; i < 6; i++) {
1011 ✗ for (int j = 0; j < 64; j++) {
1012 ✗ av_log(s->avctx, AV_LOG_DEBUG, "%5d",
1013 ✗ block[i][s->idsp.idct_permutation[j]]);
1014 }
1015 ✗ av_log(s->avctx, AV_LOG_DEBUG, "\n");
1016 }
1017 }
1018
1019
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 5080509 if (!s->avctx->lowres) {
1020 #if !CONFIG_SMALL
1021
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 5037009 if (s->out_format == FMT_MPEG1)
1022 2558739 mpv_reconstruct_mb_internal(s, block, 0, DEFINITELY_MPEG12);
1023 else
1024 2478270 mpv_reconstruct_mb_internal(s, block, 0, NOT_MPEG12);
1025 #else
1026 mpv_reconstruct_mb_internal(s, block, 0, MAY_BE_MPEG12);
1027 #endif
1028 } else
1029 43500 mpv_reconstruct_mb_internal(s, block, 1, MAY_BE_MPEG12);
1030 5080509 }
1031