1/*
2 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
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.
9 */
10
11
12#include "vp8/common/onyxc_int.h"
13#if CONFIG_POSTPROC
14#include "vp8/common/postproc.h"
15#endif
16#include "vp8/common/onyxd.h"
17#include "onyxd_int.h"
18#include "vpx_mem/vpx_mem.h"
19#include "vp8/common/alloccommon.h"
20#include "vp8/common/loopfilter.h"
21#include "vp8/common/swapyv12buffer.h"
22#include "vp8/common/threading.h"
23#include "decoderthreading.h"
24#include <stdio.h>
25#include <assert.h>
26
27#include "vp8/common/quant_common.h"
28#include "./vpx_scale_rtcd.h"
29#include "vpx_scale/vpx_scale.h"
30#include "vp8/common/systemdependent.h"
31#include "vpx_ports/vpx_timer.h"
32#include "detokenize.h"
33#if CONFIG_ERROR_CONCEALMENT
34#include "error_concealment.h"
35#endif
36#if ARCH_ARM
37#include "vpx_ports/arm.h"
38#endif
39
40extern void vp8_init_loop_filter(VP8_COMMON *cm);
41extern void vp8cx_init_de_quantizer(VP8D_COMP *pbi);
42static int get_free_fb (VP8_COMMON *cm);
43static void ref_cnt_fb (int *buf, int *idx, int new_idx);
44
45static void remove_decompressor(VP8D_COMP *pbi)
46{
47#if CONFIG_ERROR_CONCEALMENT
48    vp8_de_alloc_overlap_lists(pbi);
49#endif
50    vp8_remove_common(&pbi->common);
51    vpx_free(pbi);
52}
53
54static struct VP8D_COMP * create_decompressor(VP8D_CONFIG *oxcf)
55{
56    VP8D_COMP *pbi = vpx_memalign(32, sizeof(VP8D_COMP));
57
58    if (!pbi)
59        return NULL;
60
61    vpx_memset(pbi, 0, sizeof(VP8D_COMP));
62
63    if (setjmp(pbi->common.error.jmp))
64    {
65        pbi->common.error.setjmp = 0;
66        remove_decompressor(pbi);
67        return 0;
68    }
69
70    pbi->common.error.setjmp = 1;
71
72    vp8_create_common(&pbi->common);
73
74    pbi->common.current_video_frame = 0;
75    pbi->ready_for_new_data = 1;
76
77    /* vp8cx_init_de_quantizer() is first called here. Add check in frame_init_dequantizer() to avoid
78     *  unnecessary calling of vp8cx_init_de_quantizer() for every frame.
79     */
80    vp8cx_init_de_quantizer(pbi);
81
82    vp8_loop_filter_init(&pbi->common);
83
84    pbi->common.error.setjmp = 0;
85
86#if CONFIG_ERROR_CONCEALMENT
87    pbi->ec_enabled = oxcf->error_concealment;
88    pbi->overlaps = NULL;
89#else
90    pbi->ec_enabled = 0;
91#endif
92    /* Error concealment is activated after a key frame has been
93     * decoded without errors when error concealment is enabled.
94     */
95    pbi->ec_active = 0;
96
97    pbi->decoded_key_frame = 0;
98
99    /* Independent partitions is activated when a frame updates the
100     * token probability table to have equal probabilities over the
101     * PREV_COEF context.
102     */
103    pbi->independent_partitions = 0;
104
105    vp8_setup_block_dptrs(&pbi->mb);
106
107    return pbi;
108}
109
110vpx_codec_err_t vp8dx_get_reference(VP8D_COMP *pbi, enum vpx_ref_frame_type ref_frame_flag, YV12_BUFFER_CONFIG *sd)
111{
112    VP8_COMMON *cm = &pbi->common;
113    int ref_fb_idx;
114
115    if (ref_frame_flag == VP8_LAST_FRAME)
116        ref_fb_idx = cm->lst_fb_idx;
117    else if (ref_frame_flag == VP8_GOLD_FRAME)
118        ref_fb_idx = cm->gld_fb_idx;
119    else if (ref_frame_flag == VP8_ALTR_FRAME)
120        ref_fb_idx = cm->alt_fb_idx;
121    else{
122        vpx_internal_error(&pbi->common.error, VPX_CODEC_ERROR,
123            "Invalid reference frame");
124        return pbi->common.error.error_code;
125    }
126
127    if(cm->yv12_fb[ref_fb_idx].y_height != sd->y_height ||
128        cm->yv12_fb[ref_fb_idx].y_width != sd->y_width ||
129        cm->yv12_fb[ref_fb_idx].uv_height != sd->uv_height ||
130        cm->yv12_fb[ref_fb_idx].uv_width != sd->uv_width){
131        vpx_internal_error(&pbi->common.error, VPX_CODEC_ERROR,
132            "Incorrect buffer dimensions");
133    }
134    else
135        vp8_yv12_copy_frame(&cm->yv12_fb[ref_fb_idx], sd);
136
137    return pbi->common.error.error_code;
138}
139
140
141vpx_codec_err_t vp8dx_set_reference(VP8D_COMP *pbi, enum vpx_ref_frame_type ref_frame_flag, YV12_BUFFER_CONFIG *sd)
142{
143    VP8_COMMON *cm = &pbi->common;
144    int *ref_fb_ptr = NULL;
145    int free_fb;
146
147    if (ref_frame_flag == VP8_LAST_FRAME)
148        ref_fb_ptr = &cm->lst_fb_idx;
149    else if (ref_frame_flag == VP8_GOLD_FRAME)
150        ref_fb_ptr = &cm->gld_fb_idx;
151    else if (ref_frame_flag == VP8_ALTR_FRAME)
152        ref_fb_ptr = &cm->alt_fb_idx;
153    else{
154        vpx_internal_error(&pbi->common.error, VPX_CODEC_ERROR,
155            "Invalid reference frame");
156        return pbi->common.error.error_code;
157    }
158
159    if(cm->yv12_fb[*ref_fb_ptr].y_height != sd->y_height ||
160        cm->yv12_fb[*ref_fb_ptr].y_width != sd->y_width ||
161        cm->yv12_fb[*ref_fb_ptr].uv_height != sd->uv_height ||
162        cm->yv12_fb[*ref_fb_ptr].uv_width != sd->uv_width){
163        vpx_internal_error(&pbi->common.error, VPX_CODEC_ERROR,
164            "Incorrect buffer dimensions");
165    }
166    else{
167        /* Find an empty frame buffer. */
168        free_fb = get_free_fb(cm);
169        /* Decrease fb_idx_ref_cnt since it will be increased again in
170         * ref_cnt_fb() below. */
171        cm->fb_idx_ref_cnt[free_fb]--;
172
173        /* Manage the reference counters and copy image. */
174        ref_cnt_fb (cm->fb_idx_ref_cnt, ref_fb_ptr, free_fb);
175        vp8_yv12_copy_frame(sd, &cm->yv12_fb[*ref_fb_ptr]);
176    }
177
178   return pbi->common.error.error_code;
179}
180
181static int get_free_fb (VP8_COMMON *cm)
182{
183    int i;
184    for (i = 0; i < NUM_YV12_BUFFERS; i++)
185        if (cm->fb_idx_ref_cnt[i] == 0)
186            break;
187
188    assert(i < NUM_YV12_BUFFERS);
189    cm->fb_idx_ref_cnt[i] = 1;
190    return i;
191}
192
193static void ref_cnt_fb (int *buf, int *idx, int new_idx)
194{
195    if (buf[*idx] > 0)
196        buf[*idx]--;
197
198    *idx = new_idx;
199
200    buf[new_idx]++;
201}
202
203/* If any buffer copy / swapping is signalled it should be done here. */
204static int swap_frame_buffers (VP8_COMMON *cm)
205{
206    int err = 0;
207
208    /* The alternate reference frame or golden frame can be updated
209     *  using the new, last, or golden/alt ref frame.  If it
210     *  is updated using the newly decoded frame it is a refresh.
211     *  An update using the last or golden/alt ref frame is a copy.
212     */
213    if (cm->copy_buffer_to_arf)
214    {
215        int new_fb = 0;
216
217        if (cm->copy_buffer_to_arf == 1)
218            new_fb = cm->lst_fb_idx;
219        else if (cm->copy_buffer_to_arf == 2)
220            new_fb = cm->gld_fb_idx;
221        else
222            err = -1;
223
224        ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->alt_fb_idx, new_fb);
225    }
226
227    if (cm->copy_buffer_to_gf)
228    {
229        int new_fb = 0;
230
231        if (cm->copy_buffer_to_gf == 1)
232            new_fb = cm->lst_fb_idx;
233        else if (cm->copy_buffer_to_gf == 2)
234            new_fb = cm->alt_fb_idx;
235        else
236            err = -1;
237
238        ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->gld_fb_idx, new_fb);
239    }
240
241    if (cm->refresh_golden_frame)
242        ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->gld_fb_idx, cm->new_fb_idx);
243
244    if (cm->refresh_alt_ref_frame)
245        ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->alt_fb_idx, cm->new_fb_idx);
246
247    if (cm->refresh_last_frame)
248    {
249        ref_cnt_fb (cm->fb_idx_ref_cnt, &cm->lst_fb_idx, cm->new_fb_idx);
250
251        cm->frame_to_show = &cm->yv12_fb[cm->lst_fb_idx];
252    }
253    else
254        cm->frame_to_show = &cm->yv12_fb[cm->new_fb_idx];
255
256    cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
257
258    return err;
259}
260
261int check_fragments_for_errors(VP8D_COMP *pbi)
262{
263    if (!pbi->ec_active &&
264        pbi->fragments.count <= 1 && pbi->fragments.sizes[0] == 0)
265    {
266        VP8_COMMON *cm = &pbi->common;
267
268        /* If error concealment is disabled we won't signal missing frames
269         * to the decoder.
270         */
271        if (cm->fb_idx_ref_cnt[cm->lst_fb_idx] > 1)
272        {
273            /* The last reference shares buffer with another reference
274             * buffer. Move it to its own buffer before setting it as
275             * corrupt, otherwise we will make multiple buffers corrupt.
276             */
277            const int prev_idx = cm->lst_fb_idx;
278            cm->fb_idx_ref_cnt[prev_idx]--;
279            cm->lst_fb_idx = get_free_fb(cm);
280            vp8_yv12_copy_frame(&cm->yv12_fb[prev_idx],
281                                    &cm->yv12_fb[cm->lst_fb_idx]);
282        }
283        /* This is used to signal that we are missing frames.
284         * We do not know if the missing frame(s) was supposed to update
285         * any of the reference buffers, but we act conservative and
286         * mark only the last buffer as corrupted.
287         */
288        cm->yv12_fb[cm->lst_fb_idx].corrupted = 1;
289
290        /* Signal that we have no frame to show. */
291        cm->show_frame = 0;
292
293        /* Nothing more to do. */
294        return 0;
295    }
296
297    return 1;
298}
299
300int vp8dx_receive_compressed_data(VP8D_COMP *pbi, size_t size,
301                                  const uint8_t *source,
302                                  int64_t time_stamp)
303{
304    VP8_COMMON *cm = &pbi->common;
305    int retcode = -1;
306
307    pbi->common.error.error_code = VPX_CODEC_OK;
308
309    retcode = check_fragments_for_errors(pbi);
310    if(retcode <= 0)
311        return retcode;
312
313    cm->new_fb_idx = get_free_fb (cm);
314
315    /* setup reference frames for vp8_decode_frame */
316    pbi->dec_fb_ref[INTRA_FRAME]  = &cm->yv12_fb[cm->new_fb_idx];
317    pbi->dec_fb_ref[LAST_FRAME]   = &cm->yv12_fb[cm->lst_fb_idx];
318    pbi->dec_fb_ref[GOLDEN_FRAME] = &cm->yv12_fb[cm->gld_fb_idx];
319    pbi->dec_fb_ref[ALTREF_FRAME] = &cm->yv12_fb[cm->alt_fb_idx];
320
321    if (setjmp(pbi->common.error.jmp))
322    {
323       /* We do not know if the missing frame(s) was supposed to update
324        * any of the reference buffers, but we act conservative and
325        * mark only the last buffer as corrupted.
326        */
327        cm->yv12_fb[cm->lst_fb_idx].corrupted = 1;
328
329        if (cm->fb_idx_ref_cnt[cm->new_fb_idx] > 0)
330          cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
331
332        goto decode_exit;
333    }
334
335    pbi->common.error.setjmp = 1;
336
337    retcode = vp8_decode_frame(pbi);
338
339    if (retcode < 0)
340    {
341        if (cm->fb_idx_ref_cnt[cm->new_fb_idx] > 0)
342          cm->fb_idx_ref_cnt[cm->new_fb_idx]--;
343
344        pbi->common.error.error_code = VPX_CODEC_ERROR;
345        goto decode_exit;
346    }
347
348    if (swap_frame_buffers (cm))
349    {
350        pbi->common.error.error_code = VPX_CODEC_ERROR;
351        goto decode_exit;
352    }
353
354    vp8_clear_system_state();
355
356    if (cm->show_frame)
357    {
358        cm->current_video_frame++;
359        cm->show_frame_mi = cm->mi;
360    }
361
362    #if CONFIG_ERROR_CONCEALMENT
363    /* swap the mode infos to storage for future error concealment */
364    if (pbi->ec_enabled && pbi->common.prev_mi)
365    {
366        MODE_INFO* tmp = pbi->common.prev_mi;
367        int row, col;
368        pbi->common.prev_mi = pbi->common.mi;
369        pbi->common.mi = tmp;
370
371        /* Propagate the segment_ids to the next frame */
372        for (row = 0; row < pbi->common.mb_rows; ++row)
373        {
374            for (col = 0; col < pbi->common.mb_cols; ++col)
375            {
376                const int i = row*pbi->common.mode_info_stride + col;
377                pbi->common.mi[i].mbmi.segment_id =
378                        pbi->common.prev_mi[i].mbmi.segment_id;
379            }
380        }
381    }
382#endif
383
384    pbi->ready_for_new_data = 0;
385    pbi->last_time_stamp = time_stamp;
386
387decode_exit:
388    pbi->common.error.setjmp = 0;
389    vp8_clear_system_state();
390    return retcode;
391}
392int vp8dx_get_raw_frame(VP8D_COMP *pbi, YV12_BUFFER_CONFIG *sd, int64_t *time_stamp, int64_t *time_end_stamp, vp8_ppflags_t *flags)
393{
394    int ret = -1;
395
396    if (pbi->ready_for_new_data == 1)
397        return ret;
398
399    /* ie no raw frame to show!!! */
400    if (pbi->common.show_frame == 0)
401        return ret;
402
403    pbi->ready_for_new_data = 1;
404    *time_stamp = pbi->last_time_stamp;
405    *time_end_stamp = 0;
406
407#if CONFIG_POSTPROC
408    ret = vp8_post_proc_frame(&pbi->common, sd, flags);
409#else
410
411    if (pbi->common.frame_to_show)
412    {
413        *sd = *pbi->common.frame_to_show;
414        sd->y_width = pbi->common.Width;
415        sd->y_height = pbi->common.Height;
416        sd->uv_height = pbi->common.Height / 2;
417        ret = 0;
418    }
419    else
420    {
421        ret = -1;
422    }
423
424#endif /*!CONFIG_POSTPROC*/
425    vp8_clear_system_state();
426    return ret;
427}
428
429
430/* This function as written isn't decoder specific, but the encoder has
431 * much faster ways of computing this, so it's ok for it to live in a
432 * decode specific file.
433 */
434int vp8dx_references_buffer( VP8_COMMON *oci, int ref_frame )
435{
436    const MODE_INFO *mi = oci->mi;
437    int mb_row, mb_col;
438
439    for (mb_row = 0; mb_row < oci->mb_rows; mb_row++)
440    {
441        for (mb_col = 0; mb_col < oci->mb_cols; mb_col++,mi++)
442        {
443            if( mi->mbmi.ref_frame == ref_frame)
444              return 1;
445        }
446        mi++;
447    }
448    return 0;
449
450}
451
452int vp8_create_decoder_instances(struct frame_buffers *fb, VP8D_CONFIG *oxcf)
453{
454    if(!fb->use_frame_threads)
455    {
456        /* decoder instance for single thread mode */
457        fb->pbi[0] = create_decompressor(oxcf);
458        if(!fb->pbi[0])
459            return VPX_CODEC_ERROR;
460
461#if CONFIG_MULTITHREAD
462        /* enable row-based threading only when use_frame_threads
463         * is disabled */
464        fb->pbi[0]->max_threads = oxcf->max_threads;
465        vp8_decoder_create_threads(fb->pbi[0]);
466#endif
467    }
468    else
469    {
470        /* TODO : create frame threads and decoder instances for each
471         * thread here */
472    }
473
474    return VPX_CODEC_OK;
475}
476
477int vp8_remove_decoder_instances(struct frame_buffers *fb)
478{
479    if(!fb->use_frame_threads)
480    {
481        VP8D_COMP *pbi = fb->pbi[0];
482
483        if (!pbi)
484            return VPX_CODEC_ERROR;
485#if CONFIG_MULTITHREAD
486        if (pbi->b_multithreaded_rd)
487            vp8mt_de_alloc_temp_buffers(pbi, pbi->common.mb_rows);
488        vp8_decoder_remove_threads(pbi);
489#endif
490
491        /* decoder instance for single thread mode */
492        remove_decompressor(pbi);
493    }
494    else
495    {
496        /* TODO : remove frame threads and decoder instances for each
497         * thread here */
498    }
499
500    return VPX_CODEC_OK;
501}
502