diff options
Diffstat (limited to 'third_party/aom/av1/decoder/decoder.c')
-rw-r--r-- | third_party/aom/av1/decoder/decoder.c | 538 |
1 files changed, 538 insertions, 0 deletions
diff --git a/third_party/aom/av1/decoder/decoder.c b/third_party/aom/av1/decoder/decoder.c new file mode 100644 index 0000000000..32e94840be --- /dev/null +++ b/third_party/aom/av1/decoder/decoder.c @@ -0,0 +1,538 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include <assert.h> +#include <limits.h> +#include <stdio.h> + +#include "config/av1_rtcd.h" +#include "config/aom_dsp_rtcd.h" +#include "config/aom_scale_rtcd.h" + +#include "aom_dsp/aom_dsp_common.h" +#include "aom_mem/aom_mem.h" +#include "aom_ports/aom_timer.h" +#include "aom_scale/aom_scale.h" +#include "aom_util/aom_thread.h" + +#include "av1/common/alloccommon.h" +#include "av1/common/av1_common_int.h" +#include "av1/common/av1_loopfilter.h" +#include "av1/common/quant_common.h" +#include "av1/common/reconinter.h" +#include "av1/common/reconintra.h" + +#include "av1/decoder/decodeframe.h" +#include "av1/decoder/decoder.h" +#include "av1/decoder/detokenize.h" +#include "av1/decoder/obu.h" + +static void initialize_dec(void) { + av1_rtcd(); + aom_dsp_rtcd(); + aom_scale_rtcd(); + av1_init_intra_predictors(); + av1_init_wedge_masks(); +} + +static void dec_set_mb_mi(CommonModeInfoParams *mi_params, int width, + int height, BLOCK_SIZE min_partition_size) { + (void)min_partition_size; + // Ensure that the decoded width and height are both multiples of + // 8 luma pixels (note: this may only be a multiple of 4 chroma pixels if + // subsampling is used). + // This simplifies the implementation of various experiments, + // eg. cdef, which operates on units of 8x8 luma pixels. + const int aligned_width = ALIGN_POWER_OF_TWO(width, 3); + const int aligned_height = ALIGN_POWER_OF_TWO(height, 3); + + mi_params->mi_cols = aligned_width >> MI_SIZE_LOG2; + mi_params->mi_rows = aligned_height >> MI_SIZE_LOG2; + mi_params->mi_stride = calc_mi_size(mi_params->mi_cols); + + mi_params->mb_cols = ROUND_POWER_OF_TWO(mi_params->mi_cols, 2); + mi_params->mb_rows = ROUND_POWER_OF_TWO(mi_params->mi_rows, 2); + mi_params->MBs = mi_params->mb_rows * mi_params->mb_cols; + + mi_params->mi_alloc_bsize = BLOCK_4X4; + mi_params->mi_alloc_stride = mi_params->mi_stride; + + assert(mi_size_wide[mi_params->mi_alloc_bsize] == + mi_size_high[mi_params->mi_alloc_bsize]); +} + +static void dec_setup_mi(CommonModeInfoParams *mi_params) { + const int mi_grid_size = + mi_params->mi_stride * calc_mi_size(mi_params->mi_rows); + memset(mi_params->mi_grid_base, 0, + mi_grid_size * sizeof(*mi_params->mi_grid_base)); +} + +static void dec_free_mi(CommonModeInfoParams *mi_params) { + aom_free(mi_params->mi_alloc); + mi_params->mi_alloc = NULL; + mi_params->mi_alloc_size = 0; + aom_free(mi_params->mi_grid_base); + mi_params->mi_grid_base = NULL; + mi_params->mi_grid_size = 0; + aom_free(mi_params->tx_type_map); + mi_params->tx_type_map = NULL; +} + +AV1Decoder *av1_decoder_create(BufferPool *const pool) { + AV1Decoder *volatile const pbi = aom_memalign(32, sizeof(*pbi)); + if (!pbi) return NULL; + av1_zero(*pbi); + + AV1_COMMON *volatile const cm = &pbi->common; + cm->seq_params = &pbi->seq_params; + cm->error = &pbi->error; + + // The jmp_buf is valid only for the duration of the function that calls + // setjmp(). Therefore, this function must reset the 'setjmp' field to 0 + // before it returns. + if (setjmp(pbi->error.jmp)) { + pbi->error.setjmp = 0; + av1_decoder_remove(pbi); + return NULL; + } + + pbi->error.setjmp = 1; + + CHECK_MEM_ERROR(cm, cm->fc, + (FRAME_CONTEXT *)aom_memalign(32, sizeof(*cm->fc))); + CHECK_MEM_ERROR( + cm, cm->default_frame_context, + (FRAME_CONTEXT *)aom_memalign(32, sizeof(*cm->default_frame_context))); + memset(cm->fc, 0, sizeof(*cm->fc)); + memset(cm->default_frame_context, 0, sizeof(*cm->default_frame_context)); + + pbi->need_resync = 1; + initialize_dec(); + + // Initialize the references to not point to any frame buffers. + for (int i = 0; i < REF_FRAMES; i++) { + cm->ref_frame_map[i] = NULL; + } + + cm->current_frame.frame_number = 0; + pbi->decoding_first_frame = 1; + pbi->common.buffer_pool = pool; + + cm->seq_params->bit_depth = AOM_BITS_8; + + cm->mi_params.free_mi = dec_free_mi; + cm->mi_params.setup_mi = dec_setup_mi; + cm->mi_params.set_mb_mi = dec_set_mb_mi; + + av1_loop_filter_init(cm); + + av1_qm_init(&cm->quant_params, av1_num_planes(cm)); + av1_loop_restoration_precal(); + +#if CONFIG_ACCOUNTING + pbi->acct_enabled = 1; + aom_accounting_init(&pbi->accounting); +#endif + + pbi->error.setjmp = 0; + + aom_get_worker_interface()->init(&pbi->lf_worker); + pbi->lf_worker.thread_name = "aom lf worker"; + + return pbi; +} + +void av1_dealloc_dec_jobs(struct AV1DecTileMTData *tile_mt_info) { + if (tile_mt_info != NULL) { +#if CONFIG_MULTITHREAD + if (tile_mt_info->job_mutex != NULL) { + pthread_mutex_destroy(tile_mt_info->job_mutex); + aom_free(tile_mt_info->job_mutex); + } +#endif + aom_free(tile_mt_info->job_queue); + // clear the structure as the source of this call may be a resize in which + // case this call will be followed by an _alloc() which may fail. + av1_zero(*tile_mt_info); + } +} + +void av1_dec_free_cb_buf(AV1Decoder *pbi) { + aom_free(pbi->cb_buffer_base); + pbi->cb_buffer_base = NULL; + pbi->cb_buffer_alloc_size = 0; +} + +void av1_decoder_remove(AV1Decoder *pbi) { + int i; + + if (!pbi) return; + + // Free the tile list output buffer. + aom_free_frame_buffer(&pbi->tile_list_outbuf); + + aom_get_worker_interface()->end(&pbi->lf_worker); + aom_free(pbi->lf_worker.data1); + + if (pbi->thread_data) { + for (int worker_idx = 1; worker_idx < pbi->num_workers; worker_idx++) { + DecWorkerData *const thread_data = pbi->thread_data + worker_idx; + if (thread_data->td != NULL) { + av1_free_mc_tmp_buf(thread_data->td); + aom_free(thread_data->td); + } + } + aom_free(pbi->thread_data); + } + aom_free(pbi->dcb.xd.seg_mask); + + for (i = 0; i < pbi->num_workers; ++i) { + AVxWorker *const worker = &pbi->tile_workers[i]; + aom_get_worker_interface()->end(worker); + } +#if CONFIG_MULTITHREAD + if (pbi->row_mt_mutex_ != NULL) { + pthread_mutex_destroy(pbi->row_mt_mutex_); + aom_free(pbi->row_mt_mutex_); + } + if (pbi->row_mt_cond_ != NULL) { + pthread_cond_destroy(pbi->row_mt_cond_); + aom_free(pbi->row_mt_cond_); + } +#endif + for (i = 0; i < pbi->allocated_tiles; i++) { + TileDataDec *const tile_data = pbi->tile_data + i; + av1_dec_row_mt_dealloc(&tile_data->dec_row_mt_sync); + } + aom_free(pbi->tile_data); + aom_free(pbi->tile_workers); + + if (pbi->num_workers > 0) { + av1_loop_filter_dealloc(&pbi->lf_row_sync); + av1_loop_restoration_dealloc(&pbi->lr_row_sync); + av1_dealloc_dec_jobs(&pbi->tile_mt_info); + } + + av1_dec_free_cb_buf(pbi); +#if CONFIG_ACCOUNTING + aom_accounting_clear(&pbi->accounting); +#endif + av1_free_mc_tmp_buf(&pbi->td); + aom_img_metadata_array_free(pbi->metadata); + av1_remove_common(&pbi->common); + aom_free(pbi); +} + +void av1_visit_palette(AV1Decoder *const pbi, MACROBLOCKD *const xd, + aom_reader *r, palette_visitor_fn_t visit) { + if (!is_inter_block(xd->mi[0])) { + for (int plane = 0; plane < AOMMIN(2, av1_num_planes(&pbi->common)); + ++plane) { + if (plane == 0 || xd->is_chroma_ref) { + if (xd->mi[0]->palette_mode_info.palette_size[plane]) + visit(xd, plane, r); + } else { + assert(xd->mi[0]->palette_mode_info.palette_size[plane] == 0); + } + } + } +} + +static int equal_dimensions(const YV12_BUFFER_CONFIG *a, + const YV12_BUFFER_CONFIG *b) { + return a->y_height == b->y_height && a->y_width == b->y_width && + a->uv_height == b->uv_height && a->uv_width == b->uv_width; +} + +aom_codec_err_t av1_copy_reference_dec(AV1Decoder *pbi, int idx, + YV12_BUFFER_CONFIG *sd) { + AV1_COMMON *cm = &pbi->common; + const int num_planes = av1_num_planes(cm); + + const YV12_BUFFER_CONFIG *const cfg = get_ref_frame(cm, idx); + if (cfg == NULL) { + aom_internal_error(&pbi->error, AOM_CODEC_ERROR, "No reference frame"); + return AOM_CODEC_ERROR; + } + if (!equal_dimensions(cfg, sd)) + aom_internal_error(&pbi->error, AOM_CODEC_ERROR, + "Incorrect buffer dimensions"); + else + aom_yv12_copy_frame(cfg, sd, num_planes); + + return pbi->error.error_code; +} + +static int equal_dimensions_and_border(const YV12_BUFFER_CONFIG *a, + const YV12_BUFFER_CONFIG *b) { + return a->y_height == b->y_height && a->y_width == b->y_width && + a->uv_height == b->uv_height && a->uv_width == b->uv_width && + a->y_stride == b->y_stride && a->uv_stride == b->uv_stride && + a->border == b->border && + (a->flags & YV12_FLAG_HIGHBITDEPTH) == + (b->flags & YV12_FLAG_HIGHBITDEPTH); +} + +aom_codec_err_t av1_set_reference_dec(AV1_COMMON *cm, int idx, + int use_external_ref, + YV12_BUFFER_CONFIG *sd) { + const int num_planes = av1_num_planes(cm); + YV12_BUFFER_CONFIG *ref_buf = NULL; + + // Get the destination reference buffer. + ref_buf = get_ref_frame(cm, idx); + + if (ref_buf == NULL) { + aom_internal_error(cm->error, AOM_CODEC_ERROR, "No reference frame"); + return AOM_CODEC_ERROR; + } + + if (!use_external_ref) { + if (!equal_dimensions(ref_buf, sd)) { + aom_internal_error(cm->error, AOM_CODEC_ERROR, + "Incorrect buffer dimensions"); + } else { + // Overwrite the reference frame buffer. + aom_yv12_copy_frame(sd, ref_buf, num_planes); + } + } else { + if (!equal_dimensions_and_border(ref_buf, sd)) { + aom_internal_error(cm->error, AOM_CODEC_ERROR, + "Incorrect buffer dimensions"); + } else { + // Overwrite the reference frame buffer pointers. + // Once we no longer need the external reference buffer, these pointers + // are restored. + ref_buf->store_buf_adr[0] = ref_buf->y_buffer; + ref_buf->store_buf_adr[1] = ref_buf->u_buffer; + ref_buf->store_buf_adr[2] = ref_buf->v_buffer; + ref_buf->y_buffer = sd->y_buffer; + ref_buf->u_buffer = sd->u_buffer; + ref_buf->v_buffer = sd->v_buffer; + ref_buf->use_external_reference_buffers = 1; + } + } + + return cm->error->error_code; +} + +aom_codec_err_t av1_copy_new_frame_dec(AV1_COMMON *cm, + YV12_BUFFER_CONFIG *new_frame, + YV12_BUFFER_CONFIG *sd) { + const int num_planes = av1_num_planes(cm); + + if (!equal_dimensions_and_border(new_frame, sd)) + aom_internal_error(cm->error, AOM_CODEC_ERROR, + "Incorrect buffer dimensions"); + else + aom_yv12_copy_frame(new_frame, sd, num_planes); + + return cm->error->error_code; +} + +static void release_current_frame(AV1Decoder *pbi) { + AV1_COMMON *const cm = &pbi->common; + BufferPool *const pool = cm->buffer_pool; + + cm->cur_frame->buf.corrupted = 1; + lock_buffer_pool(pool); + decrease_ref_count(cm->cur_frame, pool); + unlock_buffer_pool(pool); + cm->cur_frame = NULL; +} + +// If any buffer updating is signaled it should be done here. +// Consumes a reference to cm->cur_frame. +// +// This functions returns void. It reports failure by setting +// pbi->error.error_code. +static void update_frame_buffers(AV1Decoder *pbi, int frame_decoded) { + int ref_index = 0, mask; + AV1_COMMON *const cm = &pbi->common; + BufferPool *const pool = cm->buffer_pool; + + if (frame_decoded) { + lock_buffer_pool(pool); + + // In ext-tile decoding, the camera frame header is only decoded once. So, + // we don't update the references here. + if (!pbi->camera_frame_header_ready) { + // The following for loop needs to release the reference stored in + // cm->ref_frame_map[ref_index] before storing a reference to + // cm->cur_frame in cm->ref_frame_map[ref_index]. + for (mask = cm->current_frame.refresh_frame_flags; mask; mask >>= 1) { + if (mask & 1) { + decrease_ref_count(cm->ref_frame_map[ref_index], pool); + cm->ref_frame_map[ref_index] = cm->cur_frame; + ++cm->cur_frame->ref_count; + } + ++ref_index; + } + } + + if (cm->show_existing_frame || cm->show_frame) { + if (pbi->output_all_layers) { + // Append this frame to the output queue + if (pbi->num_output_frames >= MAX_NUM_SPATIAL_LAYERS) { + // We can't store the new frame anywhere, so drop it and return an + // error + cm->cur_frame->buf.corrupted = 1; + decrease_ref_count(cm->cur_frame, pool); + pbi->error.error_code = AOM_CODEC_UNSUP_BITSTREAM; + } else { + pbi->output_frames[pbi->num_output_frames] = cm->cur_frame; + pbi->num_output_frames++; + } + } else { + // Replace any existing output frame + assert(pbi->num_output_frames == 0 || pbi->num_output_frames == 1); + if (pbi->num_output_frames > 0) { + decrease_ref_count(pbi->output_frames[0], pool); + } + pbi->output_frames[0] = cm->cur_frame; + pbi->num_output_frames = 1; + } + } else { + decrease_ref_count(cm->cur_frame, pool); + } + + unlock_buffer_pool(pool); + } else { + // Nothing was decoded, so just drop this frame buffer + lock_buffer_pool(pool); + decrease_ref_count(cm->cur_frame, pool); + unlock_buffer_pool(pool); + } + cm->cur_frame = NULL; + + if (!pbi->camera_frame_header_ready) { + // Invalidate these references until the next frame starts. + for (ref_index = 0; ref_index < INTER_REFS_PER_FRAME; ref_index++) { + cm->remapped_ref_idx[ref_index] = INVALID_IDX; + } + } +} + +int av1_receive_compressed_data(AV1Decoder *pbi, size_t size, + const uint8_t **psource) { + AV1_COMMON *volatile const cm = &pbi->common; + const uint8_t *source = *psource; + pbi->error.error_code = AOM_CODEC_OK; + pbi->error.has_detail = 0; + + if (size == 0) { + // This is used to signal that we are missing frames. + // We do not know if the missing frame(s) was supposed to update + // any of the reference buffers, but we act conservative and + // mark only the last buffer as corrupted. + // + // TODO(jkoleszar): Error concealment is undefined and non-normative + // at this point, but if it becomes so, [0] may not always be the correct + // thing to do here. + RefCntBuffer *ref_buf = get_ref_frame_buf(cm, LAST_FRAME); + if (ref_buf != NULL) ref_buf->buf.corrupted = 1; + } + + if (assign_cur_frame_new_fb(cm) == NULL) { + pbi->error.error_code = AOM_CODEC_MEM_ERROR; + return 1; + } + + // The jmp_buf is valid only for the duration of the function that calls + // setjmp(). Therefore, this function must reset the 'setjmp' field to 0 + // before it returns. + if (setjmp(pbi->error.jmp)) { + const AVxWorkerInterface *const winterface = aom_get_worker_interface(); + int i; + + pbi->error.setjmp = 0; + + // Synchronize all threads immediately as a subsequent decode call may + // cause a resize invalidating some allocations. + winterface->sync(&pbi->lf_worker); + for (i = 0; i < pbi->num_workers; ++i) { + winterface->sync(&pbi->tile_workers[i]); + } + + release_current_frame(pbi); + return -1; + } + + pbi->error.setjmp = 1; + + int frame_decoded = + aom_decode_frame_from_obus(pbi, source, source + size, psource); + + if (frame_decoded < 0) { + assert(pbi->error.error_code != AOM_CODEC_OK); + release_current_frame(pbi); + pbi->error.setjmp = 0; + return 1; + } + +#if TXCOEFF_TIMER + cm->cum_txcoeff_timer += cm->txcoeff_timer; + fprintf(stderr, + "txb coeff block number: %d, frame time: %ld, cum time %ld in us\n", + cm->txb_count, cm->txcoeff_timer, cm->cum_txcoeff_timer); + cm->txcoeff_timer = 0; + cm->txb_count = 0; +#endif + + // Note: At this point, this function holds a reference to cm->cur_frame + // in the buffer pool. This reference is consumed by update_frame_buffers(). + update_frame_buffers(pbi, frame_decoded); + + if (frame_decoded) { + pbi->decoding_first_frame = 0; + } + + if (pbi->error.error_code != AOM_CODEC_OK) { + pbi->error.setjmp = 0; + return 1; + } + + if (!cm->show_existing_frame) { + if (cm->seg.enabled) { + if (cm->prev_frame && + (cm->mi_params.mi_rows == cm->prev_frame->mi_rows) && + (cm->mi_params.mi_cols == cm->prev_frame->mi_cols)) { + cm->last_frame_seg_map = cm->prev_frame->seg_map; + } else { + cm->last_frame_seg_map = NULL; + } + } + } + + // Update progress in frame parallel decode. + pbi->error.setjmp = 0; + + return 0; +} + +// Get the frame at a particular index in the output queue +int av1_get_raw_frame(AV1Decoder *pbi, size_t index, YV12_BUFFER_CONFIG **sd, + aom_film_grain_t **grain_params) { + if (index >= pbi->num_output_frames) return -1; + *sd = &pbi->output_frames[index]->buf; + *grain_params = &pbi->output_frames[index]->film_grain_params; + return 0; +} + +// Get the highest-spatial-layer output +// TODO(rachelbarker): What should this do? +int av1_get_frame_to_show(AV1Decoder *pbi, YV12_BUFFER_CONFIG *frame) { + if (pbi->num_output_frames == 0) return -1; + + *frame = pbi->output_frames[pbi->num_output_frames - 1]->buf; + return 0; +} |