2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
15 #include "./vp9_rtcd.h"
16 #include "./vpx_dsp_rtcd.h"
17 #include "./vpx_scale_rtcd.h"
19 #include "vpx_mem/vpx_mem.h"
20 #include "vpx_ports/system_state.h"
21 #include "vpx_ports/vpx_once.h"
22 #include "vpx_ports/vpx_timer.h"
23 #include "vpx_scale/vpx_scale.h"
24 #include "vpx_util/vpx_thread.h"
26 #include "vp9/common/vp9_alloccommon.h"
27 #include "vp9/common/vp9_loopfilter.h"
28 #include "vp9/common/vp9_onyxc_int.h"
29 #if CONFIG_VP9_POSTPROC
30 #include "vp9/common/vp9_postproc.h"
32 #include "vp9/common/vp9_quant_common.h"
33 #include "vp9/common/vp9_reconintra.h"
35 #include "vp9/decoder/vp9_decodeframe.h"
36 #include "vp9/decoder/vp9_decoder.h"
37 #include "vp9/decoder/vp9_detokenize.h"
39 static void initialize_dec(void) {
40 static volatile int init_done = 0;
46 vp9_init_intra_predictors();
51 static void vp9_dec_setup_mi(VP9_COMMON *cm) {
52 cm->mi = cm->mip + cm->mi_stride + 1;
53 cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1;
54 memset(cm->mi_grid_base, 0,
55 cm->mi_stride * (cm->mi_rows + 1) * sizeof(*cm->mi_grid_base));
58 static int vp9_dec_alloc_mi(VP9_COMMON *cm, int mi_size) {
59 cm->mip = vpx_calloc(mi_size, sizeof(*cm->mip));
62 cm->mi_alloc_size = mi_size;
63 cm->mi_grid_base = (MODE_INFO **)vpx_calloc(mi_size, sizeof(MODE_INFO*));
64 if (!cm->mi_grid_base)
69 static void vp9_dec_free_mi(VP9_COMMON *cm) {
72 vpx_free(cm->mi_grid_base);
73 cm->mi_grid_base = NULL;
76 VP9Decoder *vp9_decoder_create(BufferPool *const pool) {
77 VP9Decoder *volatile const pbi = vpx_memalign(32, sizeof(*pbi));
78 VP9_COMMON *volatile const cm = pbi ? &pbi->common : NULL;
85 if (setjmp(cm->error.jmp)) {
87 vp9_decoder_remove(pbi);
93 CHECK_MEM_ERROR(cm, cm->fc,
94 (FRAME_CONTEXT *)vpx_calloc(1, sizeof(*cm->fc)));
95 CHECK_MEM_ERROR(cm, cm->frame_contexts,
96 (FRAME_CONTEXT *)vpx_calloc(FRAME_CONTEXTS,
97 sizeof(*cm->frame_contexts)));
100 once(initialize_dec);
102 // Initialize the references to not point to any frame buffers.
103 memset(&cm->ref_frame_map, -1, sizeof(cm->ref_frame_map));
104 memset(&cm->next_ref_frame_map, -1, sizeof(cm->next_ref_frame_map));
106 cm->current_video_frame = 0;
107 pbi->ready_for_new_data = 1;
108 pbi->common.buffer_pool = pool;
110 cm->bit_depth = VPX_BITS_8;
111 cm->dequant_bit_depth = VPX_BITS_8;
113 cm->alloc_mi = vp9_dec_alloc_mi;
114 cm->free_mi = vp9_dec_free_mi;
115 cm->setup_mi = vp9_dec_setup_mi;
117 vp9_loop_filter_init(cm);
119 cm->error.setjmp = 0;
121 vpx_get_worker_interface()->init(&pbi->lf_worker);
126 void vp9_decoder_remove(VP9Decoder *pbi) {
129 vpx_get_worker_interface()->end(&pbi->lf_worker);
130 vpx_free(pbi->lf_worker.data1);
131 vpx_free(pbi->tile_data);
132 for (i = 0; i < pbi->num_tile_workers; ++i) {
133 VPxWorker *const worker = &pbi->tile_workers[i];
134 vpx_get_worker_interface()->end(worker);
136 vpx_free(pbi->tile_worker_data);
137 vpx_free(pbi->tile_workers);
139 if (pbi->num_tile_workers > 0) {
140 vp9_loop_filter_dealloc(&pbi->lf_row_sync);
146 static int equal_dimensions(const YV12_BUFFER_CONFIG *a,
147 const YV12_BUFFER_CONFIG *b) {
148 return a->y_height == b->y_height && a->y_width == b->y_width &&
149 a->uv_height == b->uv_height && a->uv_width == b->uv_width;
152 vpx_codec_err_t vp9_copy_reference_dec(VP9Decoder *pbi,
153 VP9_REFFRAME ref_frame_flag,
154 YV12_BUFFER_CONFIG *sd) {
155 VP9_COMMON *cm = &pbi->common;
157 /* TODO(jkoleszar): The decoder doesn't have any real knowledge of what the
158 * encoder is using the frame buffers for. This is just a stub to keep the
159 * vpxenc --test-decode functionality working, and will be replaced in a
160 * later commit that adds VP9-specific controls for this functionality.
162 if (ref_frame_flag == VP9_LAST_FLAG) {
163 const YV12_BUFFER_CONFIG *const cfg = get_ref_frame(cm, 0);
165 vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
166 "No 'last' reference frame");
167 return VPX_CODEC_ERROR;
169 if (!equal_dimensions(cfg, sd))
170 vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
171 "Incorrect buffer dimensions");
173 vp8_yv12_copy_frame(cfg, sd);
175 vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
176 "Invalid reference frame");
179 return cm->error.error_code;
183 vpx_codec_err_t vp9_set_reference_dec(VP9_COMMON *cm,
184 VP9_REFFRAME ref_frame_flag,
185 YV12_BUFFER_CONFIG *sd) {
186 RefBuffer *ref_buf = NULL;
187 RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs;
189 // TODO(jkoleszar): The decoder doesn't have any real knowledge of what the
190 // encoder is using the frame buffers for. This is just a stub to keep the
191 // vpxenc --test-decode functionality working, and will be replaced in a
192 // later commit that adds VP9-specific controls for this functionality.
193 if (ref_frame_flag == VP9_LAST_FLAG) {
194 ref_buf = &cm->frame_refs[0];
195 } else if (ref_frame_flag == VP9_GOLD_FLAG) {
196 ref_buf = &cm->frame_refs[1];
197 } else if (ref_frame_flag == VP9_ALT_FLAG) {
198 ref_buf = &cm->frame_refs[2];
200 vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
201 "Invalid reference frame");
202 return cm->error.error_code;
205 if (!equal_dimensions(ref_buf->buf, sd)) {
206 vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
207 "Incorrect buffer dimensions");
209 int *ref_fb_ptr = &ref_buf->idx;
211 // Find an empty frame buffer.
212 const int free_fb = get_free_fb(cm);
213 if (cm->new_fb_idx == INVALID_IDX)
214 return VPX_CODEC_MEM_ERROR;
216 // Decrease ref_count since it will be increased again in
217 // ref_cnt_fb() below.
218 --frame_bufs[free_fb].ref_count;
220 // Manage the reference counters and copy image.
221 ref_cnt_fb(frame_bufs, ref_fb_ptr, free_fb);
222 ref_buf->buf = &frame_bufs[*ref_fb_ptr].buf;
223 vp8_yv12_copy_frame(sd, ref_buf->buf);
226 return cm->error.error_code;
229 /* If any buffer updating is signaled it should be done here. */
230 static void swap_frame_buffers(VP9Decoder *pbi) {
231 int ref_index = 0, mask;
232 VP9_COMMON *const cm = &pbi->common;
233 BufferPool *const pool = cm->buffer_pool;
234 RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs;
236 lock_buffer_pool(pool);
237 for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) {
238 const int old_idx = cm->ref_frame_map[ref_index];
239 // Current thread releases the holding of reference frame.
240 decrease_ref_count(old_idx, frame_bufs, pool);
242 // Release the reference frame in reference map.
243 if ((mask & 1) && old_idx >= 0) {
244 decrease_ref_count(old_idx, frame_bufs, pool);
246 cm->ref_frame_map[ref_index] = cm->next_ref_frame_map[ref_index];
250 // Current thread releases the holding of reference frame.
251 for (; ref_index < REF_FRAMES && !cm->show_existing_frame; ++ref_index) {
252 const int old_idx = cm->ref_frame_map[ref_index];
253 decrease_ref_count(old_idx, frame_bufs, pool);
254 cm->ref_frame_map[ref_index] = cm->next_ref_frame_map[ref_index];
256 unlock_buffer_pool(pool);
257 pbi->hold_ref_buf = 0;
258 cm->frame_to_show = get_frame_new_buffer(cm);
260 if (!pbi->frame_parallel_decode || !cm->show_frame) {
261 lock_buffer_pool(pool);
262 --frame_bufs[cm->new_fb_idx].ref_count;
263 unlock_buffer_pool(pool);
266 // Invalidate these references until the next frame starts.
267 for (ref_index = 0; ref_index < 3; ref_index++)
268 cm->frame_refs[ref_index].idx = -1;
271 int vp9_receive_compressed_data(VP9Decoder *pbi,
272 size_t size, const uint8_t **psource) {
273 VP9_COMMON *volatile const cm = &pbi->common;
274 BufferPool *volatile const pool = cm->buffer_pool;
275 RefCntBuffer *volatile const frame_bufs = cm->buffer_pool->frame_bufs;
276 const uint8_t *source = *psource;
278 cm->error.error_code = VPX_CODEC_OK;
281 // This is used to signal that we are missing frames.
282 // We do not know if the missing frame(s) was supposed to update
283 // any of the reference buffers, but we act conservative and
284 // mark only the last buffer as corrupted.
286 // TODO(jkoleszar): Error concealment is undefined and non-normative
287 // at this point, but if it becomes so, [0] may not always be the correct
289 if (cm->frame_refs[0].idx > 0) {
290 assert(cm->frame_refs[0].buf != NULL);
291 cm->frame_refs[0].buf->corrupted = 1;
295 pbi->ready_for_new_data = 0;
297 // Check if the previous frame was a frame without any references to it.
298 // Release frame buffer if not decoding in frame parallel mode.
299 if (!pbi->frame_parallel_decode && cm->new_fb_idx >= 0
300 && frame_bufs[cm->new_fb_idx].ref_count == 0)
301 pool->release_fb_cb(pool->cb_priv,
302 &frame_bufs[cm->new_fb_idx].raw_frame_buffer);
303 // Find a free frame buffer. Return error if can not find any.
304 cm->new_fb_idx = get_free_fb(cm);
305 if (cm->new_fb_idx == INVALID_IDX)
306 return VPX_CODEC_MEM_ERROR;
308 // Assign a MV array to the frame buffer.
309 cm->cur_frame = &pool->frame_bufs[cm->new_fb_idx];
311 pbi->hold_ref_buf = 0;
312 if (pbi->frame_parallel_decode) {
313 VPxWorker *const worker = pbi->frame_worker_owner;
314 vp9_frameworker_lock_stats(worker);
315 frame_bufs[cm->new_fb_idx].frame_worker_owner = worker;
316 // Reset decoding progress.
317 pbi->cur_buf = &frame_bufs[cm->new_fb_idx];
318 pbi->cur_buf->row = -1;
319 pbi->cur_buf->col = -1;
320 vp9_frameworker_unlock_stats(worker);
322 pbi->cur_buf = &frame_bufs[cm->new_fb_idx];
326 if (setjmp(cm->error.jmp)) {
327 const VPxWorkerInterface *const winterface = vpx_get_worker_interface();
330 cm->error.setjmp = 0;
331 pbi->ready_for_new_data = 1;
333 // Synchronize all threads immediately as a subsequent decode call may
334 // cause a resize invalidating some allocations.
335 winterface->sync(&pbi->lf_worker);
336 for (i = 0; i < pbi->num_tile_workers; ++i) {
337 winterface->sync(&pbi->tile_workers[i]);
340 lock_buffer_pool(pool);
341 // Release all the reference buffers if worker thread is holding them.
342 if (pbi->hold_ref_buf == 1) {
343 int ref_index = 0, mask;
344 for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) {
345 const int old_idx = cm->ref_frame_map[ref_index];
346 // Current thread releases the holding of reference frame.
347 decrease_ref_count(old_idx, frame_bufs, pool);
349 // Release the reference frame in reference map.
350 if ((mask & 1) && old_idx >= 0) {
351 decrease_ref_count(old_idx, frame_bufs, pool);
356 // Current thread releases the holding of reference frame.
357 for (; ref_index < REF_FRAMES && !cm->show_existing_frame; ++ref_index) {
358 const int old_idx = cm->ref_frame_map[ref_index];
359 decrease_ref_count(old_idx, frame_bufs, pool);
361 pbi->hold_ref_buf = 0;
363 // Release current frame.
364 decrease_ref_count(cm->new_fb_idx, frame_bufs, pool);
365 unlock_buffer_pool(pool);
367 vpx_clear_system_state();
371 cm->error.setjmp = 1;
372 vp9_decode_frame(pbi, source, source + size, psource);
374 swap_frame_buffers(pbi);
376 vpx_clear_system_state();
378 if (!cm->show_existing_frame) {
379 cm->last_show_frame = cm->show_frame;
380 cm->prev_frame = cm->cur_frame;
381 if (cm->seg.enabled && !pbi->frame_parallel_decode)
382 vp9_swap_current_and_last_seg_map(cm);
385 // Update progress in frame parallel decode.
386 if (pbi->frame_parallel_decode) {
387 // Need to lock the mutex here as another thread may
388 // be accessing this buffer.
389 VPxWorker *const worker = pbi->frame_worker_owner;
390 FrameWorkerData *const frame_worker_data = worker->data1;
391 vp9_frameworker_lock_stats(worker);
393 if (cm->show_frame) {
394 cm->current_video_frame++;
396 frame_worker_data->frame_decoded = 1;
397 frame_worker_data->frame_context_ready = 1;
398 vp9_frameworker_signal_stats(worker);
399 vp9_frameworker_unlock_stats(worker);
401 cm->last_width = cm->width;
402 cm->last_height = cm->height;
403 if (cm->show_frame) {
404 cm->current_video_frame++;
408 cm->error.setjmp = 0;
412 int vp9_get_raw_frame(VP9Decoder *pbi, YV12_BUFFER_CONFIG *sd,
413 vp9_ppflags_t *flags) {
414 VP9_COMMON *const cm = &pbi->common;
416 #if !CONFIG_VP9_POSTPROC
420 if (pbi->ready_for_new_data == 1)
423 pbi->ready_for_new_data = 1;
425 /* no raw frame to show!!! */
429 pbi->ready_for_new_data = 1;
431 #if CONFIG_VP9_POSTPROC
432 if (!cm->show_existing_frame) {
433 ret = vp9_post_proc_frame(cm, sd, flags);
435 *sd = *cm->frame_to_show;
439 *sd = *cm->frame_to_show;
441 #endif /*!CONFIG_POSTPROC*/
442 vpx_clear_system_state();
446 vpx_codec_err_t vp9_parse_superframe_index(const uint8_t *data,
448 uint32_t sizes[8], int *count,
449 vpx_decrypt_cb decrypt_cb,
450 void *decrypt_state) {
451 // A chunk ending with a byte matching 0xc0 is an invalid chunk unless
452 // it is a super frame index. If the last byte of real video compression
453 // data is 0xc0 the encoder must add a 0 byte. If we have the marker but
454 // not the associated matching marker byte at the front of the index we have
455 // an invalid bitstream and need to return an error.
460 marker = read_marker(decrypt_cb, decrypt_state, data + data_sz - 1);
463 if ((marker & 0xe0) == 0xc0) {
464 const uint32_t frames = (marker & 0x7) + 1;
465 const uint32_t mag = ((marker >> 3) & 0x3) + 1;
466 const size_t index_sz = 2 + mag * frames;
468 // This chunk is marked as having a superframe index but doesn't have
469 // enough data for it, thus it's an invalid superframe index.
470 if (data_sz < index_sz)
471 return VPX_CODEC_CORRUPT_FRAME;
474 const uint8_t marker2 = read_marker(decrypt_cb, decrypt_state,
475 data + data_sz - index_sz);
477 // This chunk is marked as having a superframe index but doesn't have
478 // the matching marker byte at the front of the index therefore it's an
480 if (marker != marker2)
481 return VPX_CODEC_CORRUPT_FRAME;
485 // Found a valid superframe index.
487 const uint8_t *x = &data[data_sz - index_sz + 1];
489 // Frames has a maximum of 8 and mag has a maximum of 4.
490 uint8_t clear_buffer[32];
491 assert(sizeof(clear_buffer) >= frames * mag);
493 decrypt_cb(decrypt_state, x, clear_buffer, frames * mag);
497 for (i = 0; i < frames; ++i) {
498 uint32_t this_sz = 0;
500 for (j = 0; j < mag; ++j)
501 this_sz |= (*x++) << (j * 8);