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#include "onyx_int.h"
12#include "vp8/common/threading.h"
13#include "vp8/common/common.h"
14#include "vp8/common/extend.h"
15#include "bitstream.h"
16#include "encodeframe.h"
17
18#if CONFIG_MULTITHREAD
19
20extern void vp8cx_mb_init_quantizer(VP8_COMP *cpi, MACROBLOCK *x, int ok_to_skip);
21
22static THREAD_FUNCTION thread_loopfilter(void *p_data)
23{
24    VP8_COMP *cpi = (VP8_COMP *)(((LPFTHREAD_DATA *)p_data)->ptr1);
25    VP8_COMMON *cm = &cpi->common;
26
27    while (1)
28    {
29        if (cpi->b_multi_threaded == 0)
30            break;
31
32        if (sem_wait(&cpi->h_event_start_lpf) == 0)
33        {
34            if (cpi->b_multi_threaded == 0) /* we're shutting down */
35                break;
36
37            vp8_loopfilter_frame(cpi, cm);
38
39            sem_post(&cpi->h_event_end_lpf);
40        }
41    }
42
43    return 0;
44}
45
46static
47THREAD_FUNCTION thread_encoding_proc(void *p_data)
48{
49    int ithread = ((ENCODETHREAD_DATA *)p_data)->ithread;
50    VP8_COMP *cpi = (VP8_COMP *)(((ENCODETHREAD_DATA *)p_data)->ptr1);
51    MB_ROW_COMP *mbri = (MB_ROW_COMP *)(((ENCODETHREAD_DATA *)p_data)->ptr2);
52    ENTROPY_CONTEXT_PLANES mb_row_left_context;
53
54    while (1)
55    {
56        if (cpi->b_multi_threaded == 0)
57            break;
58
59        if (sem_wait(&cpi->h_event_start_encoding[ithread]) == 0)
60        {
61            const int nsync = cpi->mt_sync_range;
62            VP8_COMMON *cm = &cpi->common;
63            int mb_row;
64            MACROBLOCK *x = &mbri->mb;
65            MACROBLOCKD *xd = &x->e_mbd;
66            TOKENEXTRA *tp ;
67#if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
68            TOKENEXTRA *tp_start = cpi->tok + (1 + ithread) * (16 * 24);
69            const int num_part = (1 << cm->multi_token_partition);
70#endif
71
72            int *segment_counts = mbri->segment_counts;
73            int *totalrate = &mbri->totalrate;
74
75            if (cpi->b_multi_threaded == 0) /* we're shutting down */
76                break;
77
78            for (mb_row = ithread + 1; mb_row < cm->mb_rows; mb_row += (cpi->encoding_thread_count + 1))
79            {
80
81                int recon_yoffset, recon_uvoffset;
82                int mb_col;
83                int ref_fb_idx = cm->lst_fb_idx;
84                int dst_fb_idx = cm->new_fb_idx;
85                int recon_y_stride = cm->yv12_fb[ref_fb_idx].y_stride;
86                int recon_uv_stride = cm->yv12_fb[ref_fb_idx].uv_stride;
87                int map_index = (mb_row * cm->mb_cols);
88                volatile const int *last_row_current_mb_col;
89                volatile int *current_mb_col = &cpi->mt_current_mb_col[mb_row];
90
91#if  (CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING)
92                vp8_writer *w = &cpi->bc[1 + (mb_row % num_part)];
93#else
94                tp = cpi->tok + (mb_row * (cm->mb_cols * 16 * 24));
95                cpi->tplist[mb_row].start = tp;
96#endif
97
98                last_row_current_mb_col = &cpi->mt_current_mb_col[mb_row - 1];
99
100                /* reset above block coeffs */
101                xd->above_context = cm->above_context;
102                xd->left_context = &mb_row_left_context;
103
104                vp8_zero(mb_row_left_context);
105
106                xd->up_available = (mb_row != 0);
107                recon_yoffset = (mb_row * recon_y_stride * 16);
108                recon_uvoffset = (mb_row * recon_uv_stride * 8);
109
110                /* Set the mb activity pointer to the start of the row. */
111                x->mb_activity_ptr = &cpi->mb_activity_map[map_index];
112
113                /* for each macroblock col in image */
114                for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
115                {
116                    *current_mb_col = mb_col - 1;
117
118                    if ((mb_col & (nsync - 1)) == 0)
119                    {
120                        while (mb_col > (*last_row_current_mb_col - nsync))
121                        {
122                            x86_pause_hint();
123                            thread_sleep(0);
124                        }
125                    }
126
127#if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
128                    tp = tp_start;
129#endif
130
131                    /* Distance of Mb to the various image edges.
132                     * These specified to 8th pel as they are always compared
133                     * to values that are in 1/8th pel units
134                     */
135                    xd->mb_to_left_edge = -((mb_col * 16) << 3);
136                    xd->mb_to_right_edge = ((cm->mb_cols - 1 - mb_col) * 16) << 3;
137                    xd->mb_to_top_edge = -((mb_row * 16) << 3);
138                    xd->mb_to_bottom_edge = ((cm->mb_rows - 1 - mb_row) * 16) << 3;
139
140                    /* Set up limit values for motion vectors used to prevent
141                     * them extending outside the UMV borders
142                     */
143                    x->mv_col_min = -((mb_col * 16) + (VP8BORDERINPIXELS - 16));
144                    x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16) + (VP8BORDERINPIXELS - 16);
145                    x->mv_row_min = -((mb_row * 16) + (VP8BORDERINPIXELS - 16));
146                    x->mv_row_max = ((cm->mb_rows - 1 - mb_row) * 16) + (VP8BORDERINPIXELS - 16);
147
148                    xd->dst.y_buffer = cm->yv12_fb[dst_fb_idx].y_buffer + recon_yoffset;
149                    xd->dst.u_buffer = cm->yv12_fb[dst_fb_idx].u_buffer + recon_uvoffset;
150                    xd->dst.v_buffer = cm->yv12_fb[dst_fb_idx].v_buffer + recon_uvoffset;
151                    xd->left_available = (mb_col != 0);
152
153                    x->rddiv = cpi->RDDIV;
154                    x->rdmult = cpi->RDMULT;
155
156                    /* Copy current mb to a buffer */
157                    vp8_copy_mem16x16(x->src.y_buffer, x->src.y_stride, x->thismb, 16);
158
159                    if (cpi->oxcf.tuning == VP8_TUNE_SSIM)
160                        vp8_activity_masking(cpi, x);
161
162                    /* Is segmentation enabled */
163                    /* MB level adjustment to quantizer */
164                    if (xd->segmentation_enabled)
165                    {
166                        /* Code to set segment id in xd->mbmi.segment_id for
167                         * current MB (with range checking)
168                         */
169                        if (cpi->segmentation_map[map_index + mb_col] <= 3)
170                            xd->mode_info_context->mbmi.segment_id = cpi->segmentation_map[map_index + mb_col];
171                        else
172                            xd->mode_info_context->mbmi.segment_id = 0;
173
174                        vp8cx_mb_init_quantizer(cpi, x, 1);
175                    }
176                    else
177                        /* Set to Segment 0 by default */
178                        xd->mode_info_context->mbmi.segment_id = 0;
179
180                    x->active_ptr = cpi->active_map + map_index + mb_col;
181
182                    if (cm->frame_type == KEY_FRAME)
183                    {
184                        *totalrate += vp8cx_encode_intra_macroblock(cpi, x, &tp);
185#ifdef MODE_STATS
186                        y_modes[xd->mbmi.mode] ++;
187#endif
188                    }
189                    else
190                    {
191                        *totalrate += vp8cx_encode_inter_macroblock(cpi, x, &tp, recon_yoffset, recon_uvoffset, mb_row, mb_col);
192
193#ifdef MODE_STATS
194                        inter_y_modes[xd->mbmi.mode] ++;
195
196                        if (xd->mbmi.mode == SPLITMV)
197                        {
198                            int b;
199
200                            for (b = 0; b < xd->mbmi.partition_count; b++)
201                            {
202                                inter_b_modes[x->partition->bmi[b].mode] ++;
203                            }
204                        }
205
206#endif
207                        // Keep track of how many (consecutive) times a  block
208                        // is coded as ZEROMV_LASTREF, for base layer frames.
209                        // Reset to 0 if its coded as anything else.
210                        if (cpi->current_layer == 0) {
211                          if (xd->mode_info_context->mbmi.mode == ZEROMV &&
212                              xd->mode_info_context->mbmi.ref_frame ==
213                                  LAST_FRAME) {
214                            // Increment, check for wrap-around.
215                            if (cpi->consec_zero_last[map_index+mb_col] < 255)
216                              cpi->consec_zero_last[map_index+mb_col] += 1;
217                            if (cpi->consec_zero_last_mvbias[map_index+mb_col] < 255)
218                              cpi->consec_zero_last_mvbias[map_index+mb_col] += 1;
219                          } else {
220                            cpi->consec_zero_last[map_index+mb_col] = 0;
221                            cpi->consec_zero_last_mvbias[map_index+mb_col] = 0;
222                          }
223                          if (x->zero_last_dot_suppress)
224                            cpi->consec_zero_last_mvbias[map_index+mb_col] = 0;
225                        }
226
227                        /* Special case code for cyclic refresh
228                         * If cyclic update enabled then copy
229                         * xd->mbmi.segment_id; (which may have been updated
230                         * based on mode during
231                         * vp8cx_encode_inter_macroblock()) back into the
232                         * global segmentation map
233                         */
234                        if ((cpi->current_layer == 0) &&
235                            (cpi->cyclic_refresh_mode_enabled &&
236                             xd->segmentation_enabled))
237                        {
238                            const MB_MODE_INFO * mbmi = &xd->mode_info_context->mbmi;
239                            cpi->segmentation_map[map_index + mb_col] = mbmi->segment_id;
240
241                            /* If the block has been refreshed mark it as clean
242                             * (the magnitude of the -ve influences how long it
243                             * will be before we consider another refresh):
244                             * Else if it was coded (last frame 0,0) and has
245                             * not already been refreshed then mark it as a
246                             * candidate for cleanup next time (marked 0) else
247                             * mark it as dirty (1).
248                             */
249                            if (mbmi->segment_id)
250                                cpi->cyclic_refresh_map[map_index + mb_col] = -1;
251                            else if ((mbmi->mode == ZEROMV) && (mbmi->ref_frame == LAST_FRAME))
252                            {
253                                if (cpi->cyclic_refresh_map[map_index + mb_col] == 1)
254                                    cpi->cyclic_refresh_map[map_index + mb_col] = 0;
255                            }
256                            else
257                                cpi->cyclic_refresh_map[map_index + mb_col] = 1;
258
259                        }
260                    }
261
262#if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING
263                    /* pack tokens for this MB */
264                    {
265                        int tok_count = tp - tp_start;
266                        vp8_pack_tokens(w, tp_start, tok_count);
267                    }
268#else
269                    cpi->tplist[mb_row].stop = tp;
270#endif
271                    /* Increment pointer into gf usage flags structure. */
272                    x->gf_active_ptr++;
273
274                    /* Increment the activity mask pointers. */
275                    x->mb_activity_ptr++;
276
277                    /* adjust to the next column of macroblocks */
278                    x->src.y_buffer += 16;
279                    x->src.u_buffer += 8;
280                    x->src.v_buffer += 8;
281
282                    recon_yoffset += 16;
283                    recon_uvoffset += 8;
284
285                    /* Keep track of segment usage */
286                    segment_counts[xd->mode_info_context->mbmi.segment_id]++;
287
288                    /* skip to next mb */
289                    xd->mode_info_context++;
290                    x->partition_info++;
291                    xd->above_context++;
292                }
293
294                vp8_extend_mb_row( &cm->yv12_fb[dst_fb_idx],
295                                    xd->dst.y_buffer + 16,
296                                    xd->dst.u_buffer + 8,
297                                    xd->dst.v_buffer + 8);
298
299                *current_mb_col = mb_col + nsync;
300
301                /* this is to account for the border */
302                xd->mode_info_context++;
303                x->partition_info++;
304
305                x->src.y_buffer += 16 * x->src.y_stride * (cpi->encoding_thread_count + 1) - 16 * cm->mb_cols;
306                x->src.u_buffer += 8 * x->src.uv_stride * (cpi->encoding_thread_count + 1) - 8 * cm->mb_cols;
307                x->src.v_buffer += 8 * x->src.uv_stride * (cpi->encoding_thread_count + 1) - 8 * cm->mb_cols;
308
309                xd->mode_info_context += xd->mode_info_stride * cpi->encoding_thread_count;
310                x->partition_info += xd->mode_info_stride * cpi->encoding_thread_count;
311                x->gf_active_ptr   += cm->mb_cols * cpi->encoding_thread_count;
312
313                if (mb_row == cm->mb_rows - 1)
314                {
315                    sem_post(&cpi->h_event_end_encoding); /* signal frame encoding end */
316                }
317            }
318        }
319    }
320
321    /* printf("exit thread %d\n", ithread); */
322    return 0;
323}
324
325static void setup_mbby_copy(MACROBLOCK *mbdst, MACROBLOCK *mbsrc)
326{
327
328    MACROBLOCK *x = mbsrc;
329    MACROBLOCK *z = mbdst;
330    int i;
331
332    z->ss               = x->ss;
333    z->ss_count          = x->ss_count;
334    z->searches_per_step  = x->searches_per_step;
335    z->errorperbit      = x->errorperbit;
336
337    z->sadperbit16      = x->sadperbit16;
338    z->sadperbit4       = x->sadperbit4;
339
340    /*
341    z->mv_col_min    = x->mv_col_min;
342    z->mv_col_max    = x->mv_col_max;
343    z->mv_row_min    = x->mv_row_min;
344    z->mv_row_max    = x->mv_row_max;
345    */
346
347    z->short_fdct4x4     = x->short_fdct4x4;
348    z->short_fdct8x4     = x->short_fdct8x4;
349    z->short_walsh4x4    = x->short_walsh4x4;
350    z->quantize_b        = x->quantize_b;
351    z->optimize          = x->optimize;
352
353    /*
354    z->mvc              = x->mvc;
355    z->src.y_buffer      = x->src.y_buffer;
356    z->src.u_buffer      = x->src.u_buffer;
357    z->src.v_buffer      = x->src.v_buffer;
358    */
359
360    z->mvcost[0] =  x->mvcost[0];
361    z->mvcost[1] =  x->mvcost[1];
362    z->mvsadcost[0] =  x->mvsadcost[0];
363    z->mvsadcost[1] =  x->mvsadcost[1];
364
365    z->token_costs = x->token_costs;
366    z->inter_bmode_costs = x->inter_bmode_costs;
367    z->mbmode_cost = x->mbmode_cost;
368    z->intra_uv_mode_cost = x->intra_uv_mode_cost;
369    z->bmode_costs = x->bmode_costs;
370
371    for (i = 0; i < 25; i++)
372    {
373        z->block[i].quant           = x->block[i].quant;
374        z->block[i].quant_fast      = x->block[i].quant_fast;
375        z->block[i].quant_shift     = x->block[i].quant_shift;
376        z->block[i].zbin            = x->block[i].zbin;
377        z->block[i].zrun_zbin_boost = x->block[i].zrun_zbin_boost;
378        z->block[i].round           = x->block[i].round;
379        z->block[i].src_stride      = x->block[i].src_stride;
380    }
381
382    z->q_index           = x->q_index;
383    z->act_zbin_adj      = x->act_zbin_adj;
384    z->last_act_zbin_adj = x->last_act_zbin_adj;
385
386    {
387        MACROBLOCKD *xd = &x->e_mbd;
388        MACROBLOCKD *zd = &z->e_mbd;
389
390        /*
391        zd->mode_info_context = xd->mode_info_context;
392        zd->mode_info        = xd->mode_info;
393
394        zd->mode_info_stride  = xd->mode_info_stride;
395        zd->frame_type       = xd->frame_type;
396        zd->up_available     = xd->up_available   ;
397        zd->left_available   = xd->left_available;
398        zd->left_context     = xd->left_context;
399        zd->last_frame_dc     = xd->last_frame_dc;
400        zd->last_frame_dccons = xd->last_frame_dccons;
401        zd->gold_frame_dc     = xd->gold_frame_dc;
402        zd->gold_frame_dccons = xd->gold_frame_dccons;
403        zd->mb_to_left_edge    = xd->mb_to_left_edge;
404        zd->mb_to_right_edge   = xd->mb_to_right_edge;
405        zd->mb_to_top_edge     = xd->mb_to_top_edge   ;
406        zd->mb_to_bottom_edge  = xd->mb_to_bottom_edge;
407        zd->gf_active_ptr     = xd->gf_active_ptr;
408        zd->frames_since_golden       = xd->frames_since_golden;
409        zd->frames_till_alt_ref_frame   = xd->frames_till_alt_ref_frame;
410        */
411        zd->subpixel_predict         = xd->subpixel_predict;
412        zd->subpixel_predict8x4      = xd->subpixel_predict8x4;
413        zd->subpixel_predict8x8      = xd->subpixel_predict8x8;
414        zd->subpixel_predict16x16    = xd->subpixel_predict16x16;
415        zd->segmentation_enabled     = xd->segmentation_enabled;
416        zd->mb_segement_abs_delta      = xd->mb_segement_abs_delta;
417        memcpy(zd->segment_feature_data, xd->segment_feature_data,
418               sizeof(xd->segment_feature_data));
419
420        memcpy(zd->dequant_y1_dc, xd->dequant_y1_dc, sizeof(xd->dequant_y1_dc));
421        memcpy(zd->dequant_y1, xd->dequant_y1, sizeof(xd->dequant_y1));
422        memcpy(zd->dequant_y2, xd->dequant_y2, sizeof(xd->dequant_y2));
423        memcpy(zd->dequant_uv, xd->dequant_uv, sizeof(xd->dequant_uv));
424
425#if 1
426        /*TODO:  Remove dequant from BLOCKD.  This is a temporary solution until
427         * the quantizer code uses a passed in pointer to the dequant constants.
428         * This will also require modifications to the x86 and neon assembly.
429         * */
430        for (i = 0; i < 16; i++)
431            zd->block[i].dequant = zd->dequant_y1;
432        for (i = 16; i < 24; i++)
433            zd->block[i].dequant = zd->dequant_uv;
434        zd->block[24].dequant = zd->dequant_y2;
435#endif
436
437
438        memcpy(z->rd_threshes, x->rd_threshes, sizeof(x->rd_threshes));
439        memcpy(z->rd_thresh_mult, x->rd_thresh_mult, sizeof(x->rd_thresh_mult));
440
441        z->zbin_over_quant = x->zbin_over_quant;
442        z->zbin_mode_boost_enabled = x->zbin_mode_boost_enabled;
443        z->zbin_mode_boost = x->zbin_mode_boost;
444
445        memset(z->error_bins, 0, sizeof(z->error_bins));
446    }
447}
448
449void vp8cx_init_mbrthread_data(VP8_COMP *cpi,
450                               MACROBLOCK *x,
451                               MB_ROW_COMP *mbr_ei,
452                               int count
453                              )
454{
455
456    VP8_COMMON *const cm = & cpi->common;
457    MACROBLOCKD *const xd = & x->e_mbd;
458    int i;
459
460    for (i = 0; i < count; i++)
461    {
462        MACROBLOCK *mb = & mbr_ei[i].mb;
463        MACROBLOCKD *mbd = &mb->e_mbd;
464
465        mbd->subpixel_predict        = xd->subpixel_predict;
466        mbd->subpixel_predict8x4     = xd->subpixel_predict8x4;
467        mbd->subpixel_predict8x8     = xd->subpixel_predict8x8;
468        mbd->subpixel_predict16x16   = xd->subpixel_predict16x16;
469        mb->gf_active_ptr            = x->gf_active_ptr;
470
471        memset(mbr_ei[i].segment_counts, 0, sizeof(mbr_ei[i].segment_counts));
472        mbr_ei[i].totalrate = 0;
473
474        mb->partition_info = x->pi + x->e_mbd.mode_info_stride * (i + 1);
475
476        mbd->mode_info_context = cm->mi   + x->e_mbd.mode_info_stride * (i + 1);
477        mbd->mode_info_stride  = cm->mode_info_stride;
478
479        mbd->frame_type = cm->frame_type;
480
481        mb->src = * cpi->Source;
482        mbd->pre = cm->yv12_fb[cm->lst_fb_idx];
483        mbd->dst = cm->yv12_fb[cm->new_fb_idx];
484
485        mb->src.y_buffer += 16 * x->src.y_stride * (i + 1);
486        mb->src.u_buffer +=  8 * x->src.uv_stride * (i + 1);
487        mb->src.v_buffer +=  8 * x->src.uv_stride * (i + 1);
488
489        vp8_build_block_offsets(mb);
490
491        mbd->left_context = &cm->left_context;
492        mb->mvc = cm->fc.mvc;
493
494        setup_mbby_copy(&mbr_ei[i].mb, x);
495
496        mbd->fullpixel_mask = 0xffffffff;
497        if(cm->full_pixel)
498            mbd->fullpixel_mask = 0xfffffff8;
499
500        vp8_zero(mb->coef_counts);
501        vp8_zero(x->ymode_count);
502        mb->skip_true_count = 0;
503        vp8_zero(mb->MVcount);
504        mb->prediction_error = 0;
505        mb->intra_error = 0;
506        vp8_zero(mb->count_mb_ref_frame_usage);
507        mb->mbs_tested_so_far = 0;
508        mb->mbs_zero_last_dot_suppress = 0;
509    }
510}
511
512int vp8cx_create_encoder_threads(VP8_COMP *cpi)
513{
514    const VP8_COMMON * cm = &cpi->common;
515
516    cpi->b_multi_threaded = 0;
517    cpi->encoding_thread_count = 0;
518    cpi->b_lpf_running = 0;
519
520    if (cm->processor_core_count > 1 && cpi->oxcf.multi_threaded > 1)
521    {
522        int ithread;
523        int th_count = cpi->oxcf.multi_threaded - 1;
524        int rc = 0;
525
526        /* don't allocate more threads than cores available */
527        if (cpi->oxcf.multi_threaded > cm->processor_core_count)
528            th_count = cm->processor_core_count - 1;
529
530        /* we have th_count + 1 (main) threads processing one row each */
531        /* no point to have more threads than the sync range allows */
532        if(th_count > ((cm->mb_cols / cpi->mt_sync_range) - 1))
533        {
534            th_count = (cm->mb_cols / cpi->mt_sync_range) - 1;
535        }
536
537        if(th_count == 0)
538            return 0;
539
540        CHECK_MEM_ERROR(cpi->h_encoding_thread,
541                        vpx_malloc(sizeof(pthread_t) * th_count));
542        CHECK_MEM_ERROR(cpi->h_event_start_encoding,
543                        vpx_malloc(sizeof(sem_t) * th_count));
544        CHECK_MEM_ERROR(cpi->mb_row_ei,
545                        vpx_memalign(32, sizeof(MB_ROW_COMP) * th_count));
546        memset(cpi->mb_row_ei, 0, sizeof(MB_ROW_COMP) * th_count);
547        CHECK_MEM_ERROR(cpi->en_thread_data,
548                        vpx_malloc(sizeof(ENCODETHREAD_DATA) * th_count));
549
550        sem_init(&cpi->h_event_end_encoding, 0, 0);
551
552        cpi->b_multi_threaded = 1;
553        cpi->encoding_thread_count = th_count;
554
555        /*
556        printf("[VP8:] multi_threaded encoding is enabled with %d threads\n\n",
557               (cpi->encoding_thread_count +1));
558        */
559
560        for (ithread = 0; ithread < th_count; ithread++)
561        {
562            ENCODETHREAD_DATA *ethd = &cpi->en_thread_data[ithread];
563
564            /* Setup block ptrs and offsets */
565            vp8_setup_block_ptrs(&cpi->mb_row_ei[ithread].mb);
566            vp8_setup_block_dptrs(&cpi->mb_row_ei[ithread].mb.e_mbd);
567
568            sem_init(&cpi->h_event_start_encoding[ithread], 0, 0);
569
570            ethd->ithread = ithread;
571            ethd->ptr1 = (void *)cpi;
572            ethd->ptr2 = (void *)&cpi->mb_row_ei[ithread];
573
574            rc = pthread_create(&cpi->h_encoding_thread[ithread], 0,
575                                thread_encoding_proc, ethd);
576            if(rc)
577                break;
578        }
579
580        if(rc)
581        {
582            /* shutdown other threads */
583            cpi->b_multi_threaded = 0;
584            for(--ithread; ithread >= 0; ithread--)
585            {
586                pthread_join(cpi->h_encoding_thread[ithread], 0);
587                sem_destroy(&cpi->h_event_start_encoding[ithread]);
588            }
589            sem_destroy(&cpi->h_event_end_encoding);
590
591            /* free thread related resources */
592            vpx_free(cpi->h_event_start_encoding);
593            vpx_free(cpi->h_encoding_thread);
594            vpx_free(cpi->mb_row_ei);
595            vpx_free(cpi->en_thread_data);
596
597            return -1;
598        }
599
600
601        {
602            LPFTHREAD_DATA * lpfthd = &cpi->lpf_thread_data;
603
604            sem_init(&cpi->h_event_start_lpf, 0, 0);
605            sem_init(&cpi->h_event_end_lpf, 0, 0);
606
607            lpfthd->ptr1 = (void *)cpi;
608            rc = pthread_create(&cpi->h_filter_thread, 0, thread_loopfilter,
609                                lpfthd);
610
611            if(rc)
612            {
613                /* shutdown other threads */
614                cpi->b_multi_threaded = 0;
615                for(--ithread; ithread >= 0; ithread--)
616                {
617                    sem_post(&cpi->h_event_start_encoding[ithread]);
618                    pthread_join(cpi->h_encoding_thread[ithread], 0);
619                    sem_destroy(&cpi->h_event_start_encoding[ithread]);
620                }
621                sem_destroy(&cpi->h_event_end_encoding);
622                sem_destroy(&cpi->h_event_end_lpf);
623                sem_destroy(&cpi->h_event_start_lpf);
624
625                /* free thread related resources */
626                vpx_free(cpi->h_event_start_encoding);
627                vpx_free(cpi->h_encoding_thread);
628                vpx_free(cpi->mb_row_ei);
629                vpx_free(cpi->en_thread_data);
630
631                return -2;
632            }
633        }
634    }
635    return 0;
636}
637
638void vp8cx_remove_encoder_threads(VP8_COMP *cpi)
639{
640    if (cpi->b_multi_threaded)
641    {
642        /* shutdown other threads */
643        cpi->b_multi_threaded = 0;
644        {
645            int i;
646
647            for (i = 0; i < cpi->encoding_thread_count; i++)
648            {
649                sem_post(&cpi->h_event_start_encoding[i]);
650                pthread_join(cpi->h_encoding_thread[i], 0);
651
652                sem_destroy(&cpi->h_event_start_encoding[i]);
653            }
654
655            sem_post(&cpi->h_event_start_lpf);
656            pthread_join(cpi->h_filter_thread, 0);
657        }
658
659        sem_destroy(&cpi->h_event_end_encoding);
660        sem_destroy(&cpi->h_event_end_lpf);
661        sem_destroy(&cpi->h_event_start_lpf);
662
663        /* free thread related resources */
664        vpx_free(cpi->h_event_start_encoding);
665        vpx_free(cpi->h_encoding_thread);
666        vpx_free(cpi->mb_row_ei);
667        vpx_free(cpi->en_thread_data);
668    }
669}
670#endif
671