diff options
Diffstat (limited to 'media/libaom/src/av1/decoder/decoder.c')
| -rw-r--r-- | media/libaom/src/av1/decoder/decoder.c | 575 |
1 files changed, 575 insertions, 0 deletions
diff --git a/media/libaom/src/av1/decoder/decoder.c b/media/libaom/src/av1/decoder/decoder.c new file mode 100644 index 000000000..a5f4fd67f --- /dev/null +++ b/media/libaom/src/av1/decoder/decoder.c @@ -0,0 +1,575 @@ +/* + * 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_mem/aom_mem.h" +#include "aom_ports/system_state.h" +#include "aom_ports/aom_once.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_loopfilter.h" +#include "av1/common/onyxc_int.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_setup_mi(AV1_COMMON *cm) { + cm->mi = cm->mip; + cm->mi_grid_visible = cm->mi_grid_base; + memset(cm->mi_grid_base, 0, + cm->mi_stride * cm->mi_rows * sizeof(*cm->mi_grid_base)); +} + +static int av1_dec_alloc_mi(AV1_COMMON *cm, int mi_size) { + cm->mip = aom_calloc(mi_size, sizeof(*cm->mip)); + if (!cm->mip) return 1; + cm->mi_alloc_size = mi_size; + cm->mi_grid_base = + (MB_MODE_INFO **)aom_calloc(mi_size, sizeof(MB_MODE_INFO *)); + if (!cm->mi_grid_base) return 1; + return 0; +} + +static void dec_free_mi(AV1_COMMON *cm) { + aom_free(cm->mip); + cm->mip = NULL; + aom_free(cm->mi_grid_base); + cm->mi_grid_base = NULL; + cm->mi_alloc_size = 0; +} + +AV1Decoder *av1_decoder_create(BufferPool *const pool) { + AV1Decoder *volatile const pbi = aom_memalign(32, sizeof(*pbi)); + AV1_COMMON *volatile const cm = pbi ? &pbi->common : NULL; + + if (!cm) return NULL; + + av1_zero(*pbi); + + // 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(cm->error.jmp)) { + cm->error.setjmp = 0; + av1_decoder_remove(pbi); + return NULL; + } + + cm->error.setjmp = 1; + + CHECK_MEM_ERROR(cm, cm->fc, + (FRAME_CONTEXT *)aom_memalign(32, sizeof(*cm->fc))); + CHECK_MEM_ERROR(cm, cm->frame_contexts, + (FRAME_CONTEXT *)aom_memalign( + 32, FRAME_CONTEXTS * sizeof(*cm->frame_contexts))); + memset(cm->fc, 0, sizeof(*cm->fc)); + memset(cm->frame_contexts, 0, FRAME_CONTEXTS * sizeof(*cm->frame_contexts)); + + pbi->need_resync = 1; + aom_once(initialize_dec); + + // Initialize the references to not point to any frame buffers. + memset(&cm->ref_frame_map, -1, sizeof(cm->ref_frame_map)); + memset(&cm->next_ref_frame_map, -1, sizeof(cm->next_ref_frame_map)); + + cm->current_video_frame = 0; + pbi->decoding_first_frame = 1; + pbi->common.buffer_pool = pool; + + cm->seq_params.bit_depth = AOM_BITS_8; + cm->dequant_bit_depth = AOM_BITS_8; + + cm->alloc_mi = av1_dec_alloc_mi; + cm->free_mi = dec_free_mi; + cm->setup_mi = dec_setup_mi; + + av1_loop_filter_init(cm); + + av1_qm_init(cm); + av1_loop_restoration_precal(); +#if CONFIG_ACCOUNTING + pbi->acct_enabled = 1; + aom_accounting_init(&pbi->accounting); +#endif + + cm->error.setjmp = 0; + + aom_get_worker_interface()->init(&pbi->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. + if (pbi->tile_list_output != NULL) aom_free(pbi->tile_list_output); + pbi->tile_list_output = NULL; + + aom_get_worker_interface()->end(&pbi->lf_worker); + aom_free(pbi->lf_worker.data1); + + if (pbi->thread_data) { + for (int worker_idx = 0; worker_idx < pbi->max_threads - 1; worker_idx++) { + DecWorkerData *const thread_data = pbi->thread_data + worker_idx; + av1_free_mc_tmp_buf(thread_data->td); + aom_free(thread_data->td); + } + aom_free(pbi->thread_data); + } + + 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, pbi->num_workers); + 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_free(pbi); +} + +void av1_visit_palette(AV1Decoder *const pbi, MACROBLOCKD *const xd, int mi_row, + int mi_col, aom_reader *r, BLOCK_SIZE bsize, + 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) { + const struct macroblockd_plane *const pd = &xd->plane[plane]; + if (is_chroma_reference(mi_row, mi_col, bsize, pd->subsampling_x, + pd->subsampling_y)) { + 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(&cm->error, AOM_CODEC_ERROR, "No reference frame"); + return AOM_CODEC_ERROR; + } + if (!equal_dimensions(cfg, sd)) + aom_internal_error(&cm->error, AOM_CODEC_ERROR, + "Incorrect buffer dimensions"); + else + aom_yv12_copy_frame(cfg, sd, num_planes); + + return cm->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; +} + +/* If any buffer updating is signaled it should be done here. + Consumes a reference to cm->new_fb_idx. +*/ +static void swap_frame_buffers(AV1Decoder *pbi, int frame_decoded) { + int ref_index = 0, mask; + AV1_COMMON *const cm = &pbi->common; + BufferPool *const pool = cm->buffer_pool; + RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs; + + if (frame_decoded) { + lock_buffer_pool(pool); + + // In ext-tile decoding, the camera frame header is only decoded once. So, + // we don't release the references here. + if (!pbi->camera_frame_header_ready) { + for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) { + const int old_idx = cm->ref_frame_map[ref_index]; + // Current thread releases the holding of reference frame. + decrease_ref_count(old_idx, frame_bufs, pool); + + // Release the reference frame holding in the reference map for the + // decoding of the next frame. + if (mask & 1) decrease_ref_count(old_idx, frame_bufs, pool); + cm->ref_frame_map[ref_index] = cm->next_ref_frame_map[ref_index]; + ++ref_index; + } + + // Current thread releases the holding of reference frame. + const int check_on_show_existing_frame = + !cm->show_existing_frame || cm->reset_decoder_state; + for (; ref_index < REF_FRAMES && check_on_show_existing_frame; + ++ref_index) { + const int old_idx = cm->ref_frame_map[ref_index]; + decrease_ref_count(old_idx, frame_bufs, pool); + cm->ref_frame_map[ref_index] = cm->next_ref_frame_map[ref_index]; + } + } + + YV12_BUFFER_CONFIG *cur_frame = get_frame_new_buffer(cm); + + 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 + decrease_ref_count(cm->new_fb_idx, frame_bufs, pool); + cm->error.error_code = AOM_CODEC_UNSUP_BITSTREAM; + } else { + pbi->output_frames[pbi->num_output_frames] = cur_frame; + pbi->output_frame_index[pbi->num_output_frames] = cm->new_fb_idx; + 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((int)pbi->output_frame_index[0], frame_bufs, pool); + } + pbi->output_frames[0] = cur_frame; + pbi->output_frame_index[0] = cm->new_fb_idx; + pbi->num_output_frames = 1; + } + } else { + decrease_ref_count(cm->new_fb_idx, frame_bufs, pool); + } + + unlock_buffer_pool(pool); + } else { + // Nothing was decoded, so just drop this frame buffer + lock_buffer_pool(pool); + decrease_ref_count(cm->new_fb_idx, frame_bufs, pool); + unlock_buffer_pool(pool); + } + + if (!pbi->camera_frame_header_ready) { + pbi->hold_ref_buf = 0; + + // Invalidate these references until the next frame starts. + for (ref_index = 0; ref_index < INTER_REFS_PER_FRAME; ref_index++) { + cm->frame_refs[ref_index].idx = INVALID_IDX; + cm->frame_refs[ref_index].buf = NULL; + } + } +} + +int av1_receive_compressed_data(AV1Decoder *pbi, size_t size, + const uint8_t **psource) { + AV1_COMMON *volatile const cm = &pbi->common; + BufferPool *volatile const pool = cm->buffer_pool; + RefCntBuffer *volatile const frame_bufs = cm->buffer_pool->frame_bufs; + const uint8_t *source = *psource; + cm->error.error_code = AOM_CODEC_OK; + + 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. + if (cm->frame_refs[0].idx > 0) { + assert(cm->frame_refs[0].buf != NULL); + cm->frame_refs[0].buf->corrupted = 1; + } + } + + // Find a free buffer for the new frame, releasing the reference previously + // held. + + // Find a free frame buffer. Return error if can not find any. + cm->new_fb_idx = get_free_fb(cm); + if (cm->new_fb_idx == INVALID_IDX) { + cm->error.error_code = AOM_CODEC_MEM_ERROR; + return 1; + } + + // Assign a MV array to the frame buffer. + cm->cur_frame = &pool->frame_bufs[cm->new_fb_idx]; + + if (!pbi->camera_frame_header_ready) pbi->hold_ref_buf = 0; + + pbi->cur_buf = &frame_bufs[cm->new_fb_idx]; + + // 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(cm->error.jmp)) { + const AVxWorkerInterface *const winterface = aom_get_worker_interface(); + int i; + + cm->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]); + } + + lock_buffer_pool(pool); + // Release all the reference buffers if worker thread is holding them. + if (pbi->hold_ref_buf == 1) { + int ref_index = 0, mask; + for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) { + const int old_idx = cm->ref_frame_map[ref_index]; + // Current thread releases the holding of reference frame. + decrease_ref_count(old_idx, frame_bufs, pool); + + // Release the reference frame holding in the reference map for the + // decoding of the next frame. + if (mask & 1) decrease_ref_count(old_idx, frame_bufs, pool); + ++ref_index; + } + + // Current thread releases the holding of reference frame. + const int check_on_show_existing_frame = + !cm->show_existing_frame || cm->reset_decoder_state; + for (; ref_index < REF_FRAMES && check_on_show_existing_frame; + ++ref_index) { + const int old_idx = cm->ref_frame_map[ref_index]; + decrease_ref_count(old_idx, frame_bufs, pool); + } + pbi->hold_ref_buf = 0; + } + // Release current frame. + decrease_ref_count(cm->new_fb_idx, frame_bufs, pool); + unlock_buffer_pool(pool); + + aom_clear_system_state(); + return -1; + } + + cm->error.setjmp = 1; + + int frame_decoded = + aom_decode_frame_from_obus(pbi, source, source + size, psource); + + if (cm->error.error_code != AOM_CODEC_OK) { + lock_buffer_pool(pool); + decrease_ref_count(cm->new_fb_idx, frame_bufs, pool); + unlock_buffer_pool(pool); + cm->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->new_fb_idx + // in the buffer pool. This reference is consumed by swap_frame_buffers(). + swap_frame_buffers(pbi, frame_decoded); + + if (frame_decoded) { + pbi->decoding_first_frame = 0; + } + + if (cm->error.error_code != AOM_CODEC_OK) { + cm->error.setjmp = 0; + return 1; + } + + aom_clear_system_state(); + + if (!cm->show_existing_frame) { + cm->last_show_frame = cm->show_frame; + + if (cm->seg.enabled) { + if (cm->prev_frame && (cm->mi_rows == cm->prev_frame->mi_rows) && + (cm->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. + cm->last_width = cm->width; + cm->last_height = cm->height; + cm->last_tile_cols = cm->tile_cols; + cm->last_tile_rows = cm->tile_rows; + cm->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) { + RefCntBuffer *const frame_bufs = pbi->common.buffer_pool->frame_bufs; + + if (index >= pbi->num_output_frames) return -1; + *sd = pbi->output_frames[index]; + *grain_params = &frame_bufs[pbi->output_frame_index[index]].film_grain_params; + aom_clear_system_state(); + return 0; +} + +// Get the highest-spatial-layer output +// TODO(david.barker): 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]; + return 0; +} |