diff options
Diffstat (limited to 'media/libvpx/libvpx/vp8/decoder/threading.c')
| -rw-r--r-- | media/libvpx/libvpx/vp8/decoder/threading.c | 907 |
1 files changed, 907 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp8/decoder/threading.c b/media/libvpx/libvpx/vp8/decoder/threading.c new file mode 100644 index 0000000000..6ccb080cf9 --- /dev/null +++ b/media/libvpx/libvpx/vp8/decoder/threading.c @@ -0,0 +1,907 @@ +/* + * Copyright (c) 2010 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "vpx_config.h" +#include "vp8_rtcd.h" +#if !defined(_WIN32) && CONFIG_OS_SUPPORT == 1 +#include <unistd.h> +#endif +#include "onyxd_int.h" +#include "vpx_mem/vpx_mem.h" +#include "vp8/common/common.h" +#include "vp8/common/threading.h" +#include "vp8/common/loopfilter.h" +#include "vp8/common/extend.h" +#include "vpx_ports/vpx_timer.h" +#include "decoderthreading.h" +#include "detokenize.h" +#include "vp8/common/reconintra4x4.h" +#include "vp8/common/reconinter.h" +#include "vp8/common/reconintra.h" +#include "vp8/common/setupintrarecon.h" +#if CONFIG_ERROR_CONCEALMENT +#include "error_concealment.h" +#endif + +#define CALLOC_ARRAY(p, n) \ + CHECK_MEM_ERROR(&pbi->common.error, (p), vpx_calloc(sizeof(*(p)), (n))) +#define CALLOC_ARRAY_ALIGNED(p, n, algn) \ + do { \ + CHECK_MEM_ERROR(&pbi->common.error, (p), \ + vpx_memalign((algn), sizeof(*(p)) * (n))); \ + memset((p), 0, (n) * sizeof(*(p))); \ + } while (0) + +static void setup_decoding_thread_data(VP8D_COMP *pbi, MACROBLOCKD *xd, + MB_ROW_DEC *mbrd, int count) { + VP8_COMMON *const pc = &pbi->common; + int i; + + for (i = 0; i < count; ++i) { + MACROBLOCKD *mbd = &mbrd[i].mbd; + mbd->subpixel_predict = xd->subpixel_predict; + mbd->subpixel_predict8x4 = xd->subpixel_predict8x4; + mbd->subpixel_predict8x8 = xd->subpixel_predict8x8; + mbd->subpixel_predict16x16 = xd->subpixel_predict16x16; + + mbd->frame_type = pc->frame_type; + mbd->pre = xd->pre; + mbd->dst = xd->dst; + + mbd->segmentation_enabled = xd->segmentation_enabled; + mbd->mb_segment_abs_delta = xd->mb_segment_abs_delta; + memcpy(mbd->segment_feature_data, xd->segment_feature_data, + sizeof(xd->segment_feature_data)); + + /*signed char ref_lf_deltas[MAX_REF_LF_DELTAS];*/ + memcpy(mbd->ref_lf_deltas, xd->ref_lf_deltas, sizeof(xd->ref_lf_deltas)); + /*signed char mode_lf_deltas[MAX_MODE_LF_DELTAS];*/ + memcpy(mbd->mode_lf_deltas, xd->mode_lf_deltas, sizeof(xd->mode_lf_deltas)); + /*unsigned char mode_ref_lf_delta_enabled; + unsigned char mode_ref_lf_delta_update;*/ + mbd->mode_ref_lf_delta_enabled = xd->mode_ref_lf_delta_enabled; + mbd->mode_ref_lf_delta_update = xd->mode_ref_lf_delta_update; + + mbd->current_bc = &pbi->mbc[0]; + + memcpy(mbd->dequant_y1_dc, xd->dequant_y1_dc, sizeof(xd->dequant_y1_dc)); + memcpy(mbd->dequant_y1, xd->dequant_y1, sizeof(xd->dequant_y1)); + memcpy(mbd->dequant_y2, xd->dequant_y2, sizeof(xd->dequant_y2)); + memcpy(mbd->dequant_uv, xd->dequant_uv, sizeof(xd->dequant_uv)); + + mbd->fullpixel_mask = ~0; + + if (pc->full_pixel) mbd->fullpixel_mask = ~7; + } + + for (i = 0; i < pc->mb_rows; ++i) + vpx_atomic_store_release(&pbi->mt_current_mb_col[i], -1); +} + +static void mt_decode_macroblock(VP8D_COMP *pbi, MACROBLOCKD *xd, + unsigned int mb_idx) { + MB_PREDICTION_MODE mode; + int i; +#if CONFIG_ERROR_CONCEALMENT + int corruption_detected = 0; +#else + (void)mb_idx; +#endif + + if (xd->mode_info_context->mbmi.mb_skip_coeff) { + vp8_reset_mb_tokens_context(xd); + } else if (!vp8dx_bool_error(xd->current_bc)) { + int eobtotal; + eobtotal = vp8_decode_mb_tokens(pbi, xd); + + /* Special case: Force the loopfilter to skip when eobtotal is zero */ + xd->mode_info_context->mbmi.mb_skip_coeff = (eobtotal == 0); + } + + mode = xd->mode_info_context->mbmi.mode; + + if (xd->segmentation_enabled) vp8_mb_init_dequantizer(pbi, xd); + +#if CONFIG_ERROR_CONCEALMENT + + if (pbi->ec_active) { + int throw_residual; + /* When we have independent partitions we can apply residual even + * though other partitions within the frame are corrupt. + */ + throw_residual = + (!pbi->independent_partitions && pbi->frame_corrupt_residual); + throw_residual = (throw_residual || vp8dx_bool_error(xd->current_bc)); + + if ((mb_idx >= pbi->mvs_corrupt_from_mb || throw_residual)) { + /* MB with corrupt residuals or corrupt mode/motion vectors. + * Better to use the predictor as reconstruction. + */ + pbi->frame_corrupt_residual = 1; + memset(xd->qcoeff, 0, sizeof(xd->qcoeff)); + + corruption_detected = 1; + + /* force idct to be skipped for B_PRED and use the + * prediction only for reconstruction + * */ + memset(xd->eobs, 0, 25); + } + } +#endif + + /* do prediction */ + if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME) { + vp8_build_intra_predictors_mbuv_s( + xd, xd->recon_above[1], xd->recon_above[2], xd->recon_left[1], + xd->recon_left[2], xd->recon_left_stride[1], xd->dst.u_buffer, + xd->dst.v_buffer, xd->dst.uv_stride); + + if (mode != B_PRED) { + vp8_build_intra_predictors_mby_s( + xd, xd->recon_above[0], xd->recon_left[0], xd->recon_left_stride[0], + xd->dst.y_buffer, xd->dst.y_stride); + } else { + short *DQC = xd->dequant_y1; + int dst_stride = xd->dst.y_stride; + + /* clear out residual eob info */ + if (xd->mode_info_context->mbmi.mb_skip_coeff) memset(xd->eobs, 0, 25); + + intra_prediction_down_copy(xd, xd->recon_above[0] + 16); + + for (i = 0; i < 16; ++i) { + BLOCKD *b = &xd->block[i]; + unsigned char *dst = xd->dst.y_buffer + b->offset; + B_PREDICTION_MODE b_mode = xd->mode_info_context->bmi[i].as_mode; + unsigned char *Above; + unsigned char *yleft; + int left_stride; + unsigned char top_left; + + /*Caution: For some b_mode, it needs 8 pixels (4 above + 4 + * above-right).*/ + if (i < 4 && pbi->common.filter_level) { + Above = xd->recon_above[0] + b->offset; + } else { + Above = dst - dst_stride; + } + + if (i % 4 == 0 && pbi->common.filter_level) { + yleft = xd->recon_left[0] + i; + left_stride = 1; + } else { + yleft = dst - 1; + left_stride = dst_stride; + } + + if ((i == 4 || i == 8 || i == 12) && pbi->common.filter_level) { + top_left = *(xd->recon_left[0] + i - 1); + } else { + top_left = Above[-1]; + } + + vp8_intra4x4_predict(Above, yleft, left_stride, b_mode, dst, dst_stride, + top_left); + + if (xd->eobs[i]) { + if (xd->eobs[i] > 1) { + vp8_dequant_idct_add(b->qcoeff, DQC, dst, dst_stride); + } else { + vp8_dc_only_idct_add(b->qcoeff[0] * DQC[0], dst, dst_stride, dst, + dst_stride); + memset(b->qcoeff, 0, 2 * sizeof(b->qcoeff[0])); + } + } + } + } + } else { + vp8_build_inter_predictors_mb(xd); + } + +#if CONFIG_ERROR_CONCEALMENT + if (corruption_detected) { + return; + } +#endif + + if (!xd->mode_info_context->mbmi.mb_skip_coeff) { + /* dequantization and idct */ + if (mode != B_PRED) { + short *DQC = xd->dequant_y1; + + if (mode != SPLITMV) { + BLOCKD *b = &xd->block[24]; + + /* do 2nd order transform on the dc block */ + if (xd->eobs[24] > 1) { + vp8_dequantize_b(b, xd->dequant_y2); + + vp8_short_inv_walsh4x4(&b->dqcoeff[0], xd->qcoeff); + memset(b->qcoeff, 0, 16 * sizeof(b->qcoeff[0])); + } else { + b->dqcoeff[0] = b->qcoeff[0] * xd->dequant_y2[0]; + vp8_short_inv_walsh4x4_1(&b->dqcoeff[0], xd->qcoeff); + memset(b->qcoeff, 0, 2 * sizeof(b->qcoeff[0])); + } + + /* override the dc dequant constant in order to preserve the + * dc components + */ + DQC = xd->dequant_y1_dc; + } + + vp8_dequant_idct_add_y_block(xd->qcoeff, DQC, xd->dst.y_buffer, + xd->dst.y_stride, xd->eobs); + } + + vp8_dequant_idct_add_uv_block(xd->qcoeff + 16 * 16, xd->dequant_uv, + xd->dst.u_buffer, xd->dst.v_buffer, + xd->dst.uv_stride, xd->eobs + 16); + } +} + +static void mt_decode_mb_rows(VP8D_COMP *pbi, MACROBLOCKD *xd, + int start_mb_row) { + const vpx_atomic_int *last_row_current_mb_col; + vpx_atomic_int *current_mb_col; + int mb_row; + VP8_COMMON *pc = &pbi->common; + const int nsync = pbi->sync_range; + const vpx_atomic_int first_row_no_sync_above = + VPX_ATOMIC_INIT(pc->mb_cols + nsync); + int num_part = 1 << pbi->common.multi_token_partition; + int last_mb_row = start_mb_row; + + YV12_BUFFER_CONFIG *yv12_fb_new = pbi->dec_fb_ref[INTRA_FRAME]; + YV12_BUFFER_CONFIG *yv12_fb_lst = pbi->dec_fb_ref[LAST_FRAME]; + + int recon_y_stride = yv12_fb_new->y_stride; + int recon_uv_stride = yv12_fb_new->uv_stride; + + unsigned char *ref_buffer[MAX_REF_FRAMES][3]; + unsigned char *dst_buffer[3]; + int i; + int ref_fb_corrupted[MAX_REF_FRAMES]; + + ref_fb_corrupted[INTRA_FRAME] = 0; + + for (i = 1; i < MAX_REF_FRAMES; ++i) { + YV12_BUFFER_CONFIG *this_fb = pbi->dec_fb_ref[i]; + + ref_buffer[i][0] = this_fb->y_buffer; + ref_buffer[i][1] = this_fb->u_buffer; + ref_buffer[i][2] = this_fb->v_buffer; + + ref_fb_corrupted[i] = this_fb->corrupted; + } + + dst_buffer[0] = yv12_fb_new->y_buffer; + dst_buffer[1] = yv12_fb_new->u_buffer; + dst_buffer[2] = yv12_fb_new->v_buffer; + + xd->up_available = (start_mb_row != 0); + + xd->mode_info_context = pc->mi + pc->mode_info_stride * start_mb_row; + xd->mode_info_stride = pc->mode_info_stride; + + for (mb_row = start_mb_row; mb_row < pc->mb_rows; + mb_row += (pbi->decoding_thread_count + 1)) { + int recon_yoffset, recon_uvoffset; + int mb_col; + int filter_level; + loop_filter_info_n *lfi_n = &pc->lf_info; + + /* save last row processed by this thread */ + last_mb_row = mb_row; + /* select bool coder for current partition */ + xd->current_bc = &pbi->mbc[mb_row % num_part]; + + if (mb_row > 0) { + last_row_current_mb_col = &pbi->mt_current_mb_col[mb_row - 1]; + } else { + last_row_current_mb_col = &first_row_no_sync_above; + } + + current_mb_col = &pbi->mt_current_mb_col[mb_row]; + + recon_yoffset = mb_row * recon_y_stride * 16; + recon_uvoffset = mb_row * recon_uv_stride * 8; + + /* reset contexts */ + xd->above_context = pc->above_context; + memset(xd->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES)); + + xd->left_available = 0; + + xd->mb_to_top_edge = -((mb_row * 16) << 3); + xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3; + + if (pbi->common.filter_level) { + xd->recon_above[0] = pbi->mt_yabove_row[mb_row] + 0 * 16 + 32; + xd->recon_above[1] = pbi->mt_uabove_row[mb_row] + 0 * 8 + 16; + xd->recon_above[2] = pbi->mt_vabove_row[mb_row] + 0 * 8 + 16; + + xd->recon_left[0] = pbi->mt_yleft_col[mb_row]; + xd->recon_left[1] = pbi->mt_uleft_col[mb_row]; + xd->recon_left[2] = pbi->mt_vleft_col[mb_row]; + + /* TODO: move to outside row loop */ + xd->recon_left_stride[0] = 1; + xd->recon_left_stride[1] = 1; + } else { + xd->recon_above[0] = dst_buffer[0] + recon_yoffset; + xd->recon_above[1] = dst_buffer[1] + recon_uvoffset; + xd->recon_above[2] = dst_buffer[2] + recon_uvoffset; + + xd->recon_left[0] = xd->recon_above[0] - 1; + xd->recon_left[1] = xd->recon_above[1] - 1; + xd->recon_left[2] = xd->recon_above[2] - 1; + + xd->recon_above[0] -= xd->dst.y_stride; + xd->recon_above[1] -= xd->dst.uv_stride; + xd->recon_above[2] -= xd->dst.uv_stride; + + /* TODO: move to outside row loop */ + xd->recon_left_stride[0] = xd->dst.y_stride; + xd->recon_left_stride[1] = xd->dst.uv_stride; + + setup_intra_recon_left(xd->recon_left[0], xd->recon_left[1], + xd->recon_left[2], xd->dst.y_stride, + xd->dst.uv_stride); + } + + for (mb_col = 0; mb_col < pc->mb_cols; ++mb_col) { + if (((mb_col - 1) % nsync) == 0) { + vpx_atomic_store_release(current_mb_col, mb_col - 1); + } + + if (mb_row && !(mb_col & (nsync - 1))) { + vp8_atomic_spin_wait(mb_col, last_row_current_mb_col, nsync); + } + + /* Distance of MB to the various image edges. + * These are specified to 8th pel as they are always + * compared to values that are in 1/8th pel units. + */ + xd->mb_to_left_edge = -((mb_col * 16) << 3); + xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3; + +#if CONFIG_ERROR_CONCEALMENT + { + int corrupt_residual = + (!pbi->independent_partitions && pbi->frame_corrupt_residual) || + vp8dx_bool_error(xd->current_bc); + if (pbi->ec_active && + (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME) && + corrupt_residual) { + /* We have an intra block with corrupt + * coefficients, better to conceal with an inter + * block. + * Interpolate MVs from neighboring MBs + * + * Note that for the first mb with corrupt + * residual in a frame, we might not discover + * that before decoding the residual. That + * happens after this check, and therefore no + * inter concealment will be done. + */ + vp8_interpolate_motion(xd, mb_row, mb_col, pc->mb_rows, pc->mb_cols); + } + } +#endif + + xd->dst.y_buffer = dst_buffer[0] + recon_yoffset; + xd->dst.u_buffer = dst_buffer[1] + recon_uvoffset; + xd->dst.v_buffer = dst_buffer[2] + recon_uvoffset; + + /* propagate errors from reference frames */ + xd->corrupted |= ref_fb_corrupted[xd->mode_info_context->mbmi.ref_frame]; + + if (xd->corrupted) { + // Move current decoding marcoblock to the end of row for all rows + // assigned to this thread, such that other threads won't be waiting. + for (; mb_row < pc->mb_rows; + mb_row += (pbi->decoding_thread_count + 1)) { + current_mb_col = &pbi->mt_current_mb_col[mb_row]; + vpx_atomic_store_release(current_mb_col, pc->mb_cols + nsync); + } + vpx_internal_error(&xd->error_info, VPX_CODEC_CORRUPT_FRAME, + "Corrupted reference frame"); + } + + if (xd->mode_info_context->mbmi.ref_frame >= LAST_FRAME) { + const MV_REFERENCE_FRAME ref = xd->mode_info_context->mbmi.ref_frame; + xd->pre.y_buffer = ref_buffer[ref][0] + recon_yoffset; + xd->pre.u_buffer = ref_buffer[ref][1] + recon_uvoffset; + xd->pre.v_buffer = ref_buffer[ref][2] + recon_uvoffset; + } else { + // ref_frame is INTRA_FRAME, pre buffer should not be used. + xd->pre.y_buffer = 0; + xd->pre.u_buffer = 0; + xd->pre.v_buffer = 0; + } + mt_decode_macroblock(pbi, xd, 0); + + xd->left_available = 1; + + /* check if the boolean decoder has suffered an error */ + xd->corrupted |= vp8dx_bool_error(xd->current_bc); + + xd->recon_above[0] += 16; + xd->recon_above[1] += 8; + xd->recon_above[2] += 8; + + if (!pbi->common.filter_level) { + xd->recon_left[0] += 16; + xd->recon_left[1] += 8; + xd->recon_left[2] += 8; + } + + if (pbi->common.filter_level) { + int skip_lf = (xd->mode_info_context->mbmi.mode != B_PRED && + xd->mode_info_context->mbmi.mode != SPLITMV && + xd->mode_info_context->mbmi.mb_skip_coeff); + + const int mode_index = + lfi_n->mode_lf_lut[xd->mode_info_context->mbmi.mode]; + const int seg = xd->mode_info_context->mbmi.segment_id; + const int ref_frame = xd->mode_info_context->mbmi.ref_frame; + + filter_level = lfi_n->lvl[seg][ref_frame][mode_index]; + + if (mb_row != pc->mb_rows - 1) { + /* Save decoded MB last row data for next-row decoding */ + memcpy((pbi->mt_yabove_row[mb_row + 1] + 32 + mb_col * 16), + (xd->dst.y_buffer + 15 * recon_y_stride), 16); + memcpy((pbi->mt_uabove_row[mb_row + 1] + 16 + mb_col * 8), + (xd->dst.u_buffer + 7 * recon_uv_stride), 8); + memcpy((pbi->mt_vabove_row[mb_row + 1] + 16 + mb_col * 8), + (xd->dst.v_buffer + 7 * recon_uv_stride), 8); + } + + /* save left_col for next MB decoding */ + if (mb_col != pc->mb_cols - 1) { + MODE_INFO *next = xd->mode_info_context + 1; + + if (next->mbmi.ref_frame == INTRA_FRAME) { + for (i = 0; i < 16; ++i) { + pbi->mt_yleft_col[mb_row][i] = + xd->dst.y_buffer[i * recon_y_stride + 15]; + } + for (i = 0; i < 8; ++i) { + pbi->mt_uleft_col[mb_row][i] = + xd->dst.u_buffer[i * recon_uv_stride + 7]; + pbi->mt_vleft_col[mb_row][i] = + xd->dst.v_buffer[i * recon_uv_stride + 7]; + } + } + } + + /* loopfilter on this macroblock. */ + if (filter_level) { + if (pc->filter_type == NORMAL_LOOPFILTER) { + loop_filter_info lfi; + FRAME_TYPE frame_type = pc->frame_type; + const int hev_index = lfi_n->hev_thr_lut[frame_type][filter_level]; + lfi.mblim = lfi_n->mblim[filter_level]; + lfi.blim = lfi_n->blim[filter_level]; + lfi.lim = lfi_n->lim[filter_level]; + lfi.hev_thr = lfi_n->hev_thr[hev_index]; + + if (mb_col > 0) + vp8_loop_filter_mbv(xd->dst.y_buffer, xd->dst.u_buffer, + xd->dst.v_buffer, recon_y_stride, + recon_uv_stride, &lfi); + + if (!skip_lf) + vp8_loop_filter_bv(xd->dst.y_buffer, xd->dst.u_buffer, + xd->dst.v_buffer, recon_y_stride, + recon_uv_stride, &lfi); + + /* don't apply across umv border */ + if (mb_row > 0) + vp8_loop_filter_mbh(xd->dst.y_buffer, xd->dst.u_buffer, + xd->dst.v_buffer, recon_y_stride, + recon_uv_stride, &lfi); + + if (!skip_lf) + vp8_loop_filter_bh(xd->dst.y_buffer, xd->dst.u_buffer, + xd->dst.v_buffer, recon_y_stride, + recon_uv_stride, &lfi); + } else { + if (mb_col > 0) + vp8_loop_filter_simple_mbv(xd->dst.y_buffer, recon_y_stride, + lfi_n->mblim[filter_level]); + + if (!skip_lf) + vp8_loop_filter_simple_bv(xd->dst.y_buffer, recon_y_stride, + lfi_n->blim[filter_level]); + + /* don't apply across umv border */ + if (mb_row > 0) + vp8_loop_filter_simple_mbh(xd->dst.y_buffer, recon_y_stride, + lfi_n->mblim[filter_level]); + + if (!skip_lf) + vp8_loop_filter_simple_bh(xd->dst.y_buffer, recon_y_stride, + lfi_n->blim[filter_level]); + } + } + } + + recon_yoffset += 16; + recon_uvoffset += 8; + + ++xd->mode_info_context; /* next mb */ + + xd->above_context++; + } + + /* adjust to the next row of mbs */ + if (pbi->common.filter_level) { + if (mb_row != pc->mb_rows - 1) { + int lasty = yv12_fb_lst->y_width + VP8BORDERINPIXELS; + int lastuv = (yv12_fb_lst->y_width >> 1) + (VP8BORDERINPIXELS >> 1); + + for (i = 0; i < 4; ++i) { + pbi->mt_yabove_row[mb_row + 1][lasty + i] = + pbi->mt_yabove_row[mb_row + 1][lasty - 1]; + pbi->mt_uabove_row[mb_row + 1][lastuv + i] = + pbi->mt_uabove_row[mb_row + 1][lastuv - 1]; + pbi->mt_vabove_row[mb_row + 1][lastuv + i] = + pbi->mt_vabove_row[mb_row + 1][lastuv - 1]; + } + } + } else { + vp8_extend_mb_row(yv12_fb_new, xd->dst.y_buffer + 16, + xd->dst.u_buffer + 8, xd->dst.v_buffer + 8); + } + + /* last MB of row is ready just after extension is done */ + vpx_atomic_store_release(current_mb_col, mb_col + nsync); + + ++xd->mode_info_context; /* skip prediction column */ + xd->up_available = 1; + + /* since we have multithread */ + xd->mode_info_context += xd->mode_info_stride * pbi->decoding_thread_count; + } + + /* signal end of decoding of current thread for current frame */ + if (last_mb_row + (int)pbi->decoding_thread_count + 1 >= pc->mb_rows) + sem_post(&pbi->h_event_end_decoding); +} + +static THREAD_FUNCTION thread_decoding_proc(void *p_data) { + int ithread = ((DECODETHREAD_DATA *)p_data)->ithread; + VP8D_COMP *pbi = (VP8D_COMP *)(((DECODETHREAD_DATA *)p_data)->ptr1); + MB_ROW_DEC *mbrd = (MB_ROW_DEC *)(((DECODETHREAD_DATA *)p_data)->ptr2); + ENTROPY_CONTEXT_PLANES mb_row_left_context; + + while (1) { + if (vpx_atomic_load_acquire(&pbi->b_multithreaded_rd) == 0) break; + + if (sem_wait(&pbi->h_event_start_decoding[ithread]) == 0) { + if (vpx_atomic_load_acquire(&pbi->b_multithreaded_rd) == 0) { + break; + } else { + MACROBLOCKD *xd = &mbrd->mbd; + xd->left_context = &mb_row_left_context; + if (setjmp(xd->error_info.jmp)) { + xd->error_info.setjmp = 0; + // Signal the end of decoding for current thread. + sem_post(&pbi->h_event_end_decoding); + continue; + } + xd->error_info.setjmp = 1; + mt_decode_mb_rows(pbi, xd, ithread + 1); + } + } + } + + return 0; +} + +void vp8_decoder_create_threads(VP8D_COMP *pbi) { + int core_count = 0; + unsigned int ithread; + + vpx_atomic_init(&pbi->b_multithreaded_rd, 0); + pbi->allocated_decoding_thread_count = 0; + + /* limit decoding threads to the max number of token partitions */ + core_count = (pbi->max_threads > 8) ? 8 : pbi->max_threads; + + /* limit decoding threads to the available cores */ + if (core_count > pbi->common.processor_core_count) { + core_count = pbi->common.processor_core_count; + } + + if (core_count > 1) { + vpx_atomic_init(&pbi->b_multithreaded_rd, 1); + pbi->decoding_thread_count = core_count - 1; + + CALLOC_ARRAY(pbi->h_decoding_thread, pbi->decoding_thread_count); + CALLOC_ARRAY(pbi->h_event_start_decoding, pbi->decoding_thread_count); + CALLOC_ARRAY_ALIGNED(pbi->mb_row_di, pbi->decoding_thread_count, 32); + CALLOC_ARRAY(pbi->de_thread_data, pbi->decoding_thread_count); + + if (sem_init(&pbi->h_event_end_decoding, 0, 0)) { + vpx_internal_error(&pbi->common.error, VPX_CODEC_MEM_ERROR, + "Failed to initialize semaphore"); + } + + for (ithread = 0; ithread < pbi->decoding_thread_count; ++ithread) { + if (sem_init(&pbi->h_event_start_decoding[ithread], 0, 0)) break; + + vp8_setup_block_dptrs(&pbi->mb_row_di[ithread].mbd); + + pbi->de_thread_data[ithread].ithread = ithread; + pbi->de_thread_data[ithread].ptr1 = (void *)pbi; + pbi->de_thread_data[ithread].ptr2 = (void *)&pbi->mb_row_di[ithread]; + + if (pthread_create(&pbi->h_decoding_thread[ithread], 0, + thread_decoding_proc, &pbi->de_thread_data[ithread])) { + sem_destroy(&pbi->h_event_start_decoding[ithread]); + break; + } + } + + pbi->allocated_decoding_thread_count = ithread; + if (pbi->allocated_decoding_thread_count != + (int)pbi->decoding_thread_count) { + /* the remainder of cleanup cases will be handled in + * vp8_decoder_remove_threads(). */ + if (pbi->allocated_decoding_thread_count == 0) { + sem_destroy(&pbi->h_event_end_decoding); + } + vpx_internal_error(&pbi->common.error, VPX_CODEC_MEM_ERROR, + "Failed to create threads"); + } + } +} + +void vp8mt_de_alloc_temp_buffers(VP8D_COMP *pbi, int mb_rows) { + int i; + + vpx_free(pbi->mt_current_mb_col); + pbi->mt_current_mb_col = NULL; + + /* Free above_row buffers. */ + if (pbi->mt_yabove_row) { + for (i = 0; i < mb_rows; ++i) { + vpx_free(pbi->mt_yabove_row[i]); + pbi->mt_yabove_row[i] = NULL; + } + vpx_free(pbi->mt_yabove_row); + pbi->mt_yabove_row = NULL; + } + + if (pbi->mt_uabove_row) { + for (i = 0; i < mb_rows; ++i) { + vpx_free(pbi->mt_uabove_row[i]); + pbi->mt_uabove_row[i] = NULL; + } + vpx_free(pbi->mt_uabove_row); + pbi->mt_uabove_row = NULL; + } + + if (pbi->mt_vabove_row) { + for (i = 0; i < mb_rows; ++i) { + vpx_free(pbi->mt_vabove_row[i]); + pbi->mt_vabove_row[i] = NULL; + } + vpx_free(pbi->mt_vabove_row); + pbi->mt_vabove_row = NULL; + } + + /* Free left_col buffers. */ + if (pbi->mt_yleft_col) { + for (i = 0; i < mb_rows; ++i) { + vpx_free(pbi->mt_yleft_col[i]); + pbi->mt_yleft_col[i] = NULL; + } + vpx_free(pbi->mt_yleft_col); + pbi->mt_yleft_col = NULL; + } + + if (pbi->mt_uleft_col) { + for (i = 0; i < mb_rows; ++i) { + vpx_free(pbi->mt_uleft_col[i]); + pbi->mt_uleft_col[i] = NULL; + } + vpx_free(pbi->mt_uleft_col); + pbi->mt_uleft_col = NULL; + } + + if (pbi->mt_vleft_col) { + for (i = 0; i < mb_rows; ++i) { + vpx_free(pbi->mt_vleft_col[i]); + pbi->mt_vleft_col[i] = NULL; + } + vpx_free(pbi->mt_vleft_col); + pbi->mt_vleft_col = NULL; + } +} + +void vp8mt_alloc_temp_buffers(VP8D_COMP *pbi, int width, int prev_mb_rows) { + VP8_COMMON *const pc = &pbi->common; + int i; + int uv_width; + + if (vpx_atomic_load_acquire(&pbi->b_multithreaded_rd)) { + vp8mt_de_alloc_temp_buffers(pbi, prev_mb_rows); + + /* our internal buffers are always multiples of 16 */ + if ((width & 0xf) != 0) width += 16 - (width & 0xf); + + if (width < 640) { + pbi->sync_range = 1; + } else if (width <= 1280) { + pbi->sync_range = 8; + } else if (width <= 2560) { + pbi->sync_range = 16; + } else { + pbi->sync_range = 32; + } + + uv_width = width >> 1; + + /* Allocate a vpx_atomic_int for each mb row. */ + CHECK_MEM_ERROR(&pc->error, pbi->mt_current_mb_col, + vpx_malloc(sizeof(*pbi->mt_current_mb_col) * pc->mb_rows)); + for (i = 0; i < pc->mb_rows; ++i) + vpx_atomic_init(&pbi->mt_current_mb_col[i], 0); + + /* Allocate memory for above_row buffers. */ + CALLOC_ARRAY(pbi->mt_yabove_row, pc->mb_rows); + for (i = 0; i < pc->mb_rows; ++i) { + CHECK_MEM_ERROR(&pc->error, pbi->mt_yabove_row[i], + vpx_memalign(16, sizeof(unsigned char) * + (width + (VP8BORDERINPIXELS << 1)))); + vp8_zero_array(pbi->mt_yabove_row[i], width + (VP8BORDERINPIXELS << 1)); + } + + CALLOC_ARRAY(pbi->mt_uabove_row, pc->mb_rows); + for (i = 0; i < pc->mb_rows; ++i) { + CHECK_MEM_ERROR(&pc->error, pbi->mt_uabove_row[i], + vpx_memalign(16, sizeof(unsigned char) * + (uv_width + VP8BORDERINPIXELS))); + vp8_zero_array(pbi->mt_uabove_row[i], uv_width + VP8BORDERINPIXELS); + } + + CALLOC_ARRAY(pbi->mt_vabove_row, pc->mb_rows); + for (i = 0; i < pc->mb_rows; ++i) { + CHECK_MEM_ERROR(&pc->error, pbi->mt_vabove_row[i], + vpx_memalign(16, sizeof(unsigned char) * + (uv_width + VP8BORDERINPIXELS))); + vp8_zero_array(pbi->mt_vabove_row[i], uv_width + VP8BORDERINPIXELS); + } + + /* Allocate memory for left_col buffers. */ + CALLOC_ARRAY(pbi->mt_yleft_col, pc->mb_rows); + for (i = 0; i < pc->mb_rows; ++i) + CHECK_MEM_ERROR(&pc->error, pbi->mt_yleft_col[i], + vpx_calloc(sizeof(unsigned char) * 16, 1)); + + CALLOC_ARRAY(pbi->mt_uleft_col, pc->mb_rows); + for (i = 0; i < pc->mb_rows; ++i) + CHECK_MEM_ERROR(&pc->error, pbi->mt_uleft_col[i], + vpx_calloc(sizeof(unsigned char) * 8, 1)); + + CALLOC_ARRAY(pbi->mt_vleft_col, pc->mb_rows); + for (i = 0; i < pc->mb_rows; ++i) + CHECK_MEM_ERROR(&pc->error, pbi->mt_vleft_col[i], + vpx_calloc(sizeof(unsigned char) * 8, 1)); + } +} + +void vp8_decoder_remove_threads(VP8D_COMP *pbi) { + /* shutdown MB Decoding thread; */ + if (vpx_atomic_load_acquire(&pbi->b_multithreaded_rd)) { + int i; + vpx_atomic_store_release(&pbi->b_multithreaded_rd, 0); + + /* allow all threads to exit */ + for (i = 0; i < pbi->allocated_decoding_thread_count; ++i) { + sem_post(&pbi->h_event_start_decoding[i]); + pthread_join(pbi->h_decoding_thread[i], NULL); + } + + for (i = 0; i < pbi->allocated_decoding_thread_count; ++i) { + sem_destroy(&pbi->h_event_start_decoding[i]); + } + + if (pbi->allocated_decoding_thread_count) { + sem_destroy(&pbi->h_event_end_decoding); + } + + vpx_free(pbi->h_decoding_thread); + pbi->h_decoding_thread = NULL; + + vpx_free(pbi->h_event_start_decoding); + pbi->h_event_start_decoding = NULL; + + vpx_free(pbi->mb_row_di); + pbi->mb_row_di = NULL; + + vpx_free(pbi->de_thread_data); + pbi->de_thread_data = NULL; + + vp8mt_de_alloc_temp_buffers(pbi, pbi->common.mb_rows); + } +} + +int vp8mt_decode_mb_rows(VP8D_COMP *pbi, MACROBLOCKD *xd) { + VP8_COMMON *pc = &pbi->common; + unsigned int i; + int j; + + int filter_level = pc->filter_level; + YV12_BUFFER_CONFIG *yv12_fb_new = pbi->dec_fb_ref[INTRA_FRAME]; + + if (filter_level) { + /* Set above_row buffer to 127 for decoding first MB row */ + memset(pbi->mt_yabove_row[0] + VP8BORDERINPIXELS - 1, 127, + yv12_fb_new->y_width + 5); + memset(pbi->mt_uabove_row[0] + (VP8BORDERINPIXELS >> 1) - 1, 127, + (yv12_fb_new->y_width >> 1) + 5); + memset(pbi->mt_vabove_row[0] + (VP8BORDERINPIXELS >> 1) - 1, 127, + (yv12_fb_new->y_width >> 1) + 5); + + for (j = 1; j < pc->mb_rows; ++j) { + memset(pbi->mt_yabove_row[j] + VP8BORDERINPIXELS - 1, (unsigned char)129, + 1); + memset(pbi->mt_uabove_row[j] + (VP8BORDERINPIXELS >> 1) - 1, + (unsigned char)129, 1); + memset(pbi->mt_vabove_row[j] + (VP8BORDERINPIXELS >> 1) - 1, + (unsigned char)129, 1); + } + + /* Set left_col to 129 initially */ + for (j = 0; j < pc->mb_rows; ++j) { + memset(pbi->mt_yleft_col[j], (unsigned char)129, 16); + memset(pbi->mt_uleft_col[j], (unsigned char)129, 8); + memset(pbi->mt_vleft_col[j], (unsigned char)129, 8); + } + + /* Initialize the loop filter for this frame. */ + vp8_loop_filter_frame_init(pc, &pbi->mb, filter_level); + } else { + vp8_setup_intra_recon_top_line(yv12_fb_new); + } + + setup_decoding_thread_data(pbi, xd, pbi->mb_row_di, + pbi->decoding_thread_count); + + for (i = 0; i < pbi->decoding_thread_count; ++i) { + sem_post(&pbi->h_event_start_decoding[i]); + } + + if (setjmp(xd->error_info.jmp)) { + xd->error_info.setjmp = 0; + xd->corrupted = 1; + // Wait for other threads to finish. This prevents other threads decoding + // the current frame while the main thread starts decoding the next frame, + // which causes a data race. + for (i = 0; i < pbi->decoding_thread_count; ++i) + sem_wait(&pbi->h_event_end_decoding); + return -1; + } + + xd->error_info.setjmp = 1; + mt_decode_mb_rows(pbi, xd, 0); + + for (i = 0; i < pbi->decoding_thread_count + 1; ++i) + sem_wait(&pbi->h_event_end_decoding); /* add back for each frame */ + + return 0; +} |