327 lines
9.4 KiB
C
327 lines
9.4 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include <limits.h>
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#include <stdio.h>
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#include "./vpx_scale_rtcd.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vpx_ports/vpx_timer.h"
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#include "vpx_scale/vpx_scale.h"
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#include "vp9/common/vp9_alloccommon.h"
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#include "vp9/common/vp9_loopfilter.h"
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#include "vp9/common/vp9_onyxc_int.h"
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#if CONFIG_VP9_POSTPROC
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#include "vp9/common/vp9_postproc.h"
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#endif
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#include "vp9/common/vp9_quant_common.h"
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#include "vp9/common/vp9_systemdependent.h"
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#include "vp9/decoder/vp9_decodeframe.h"
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#include "vp9/decoder/vp9_decoder.h"
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#include "vp9/decoder/vp9_detokenize.h"
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#include "vp9/decoder/vp9_dthread.h"
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static void initialize_dec() {
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static int init_done = 0;
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if (!init_done) {
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vp9_init_neighbors();
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vp9_init_quant_tables();
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init_done = 1;
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}
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}
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VP9Decoder *vp9_decoder_create() {
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VP9Decoder *const pbi = vpx_memalign(32, sizeof(*pbi));
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VP9_COMMON *const cm = pbi ? &pbi->common : NULL;
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if (!cm)
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return NULL;
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vp9_zero(*pbi);
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if (setjmp(cm->error.jmp)) {
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cm->error.setjmp = 0;
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vp9_decoder_remove(pbi);
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return NULL;
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}
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cm->error.setjmp = 1;
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initialize_dec();
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vp9_rtcd();
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// Initialize the references to not point to any frame buffers.
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vpx_memset(&cm->ref_frame_map, -1, sizeof(cm->ref_frame_map));
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cm->current_video_frame = 0;
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pbi->ready_for_new_data = 1;
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pbi->decoded_key_frame = 0;
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// vp9_init_dequantizer() is first called here. Add check in
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// frame_init_dequantizer() to avoid unnecessary calling of
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// vp9_init_dequantizer() for every frame.
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vp9_init_dequantizer(cm);
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vp9_loop_filter_init(cm);
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cm->error.setjmp = 0;
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vp9_worker_init(&pbi->lf_worker);
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return pbi;
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}
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void vp9_decoder_remove(VP9Decoder *pbi) {
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VP9_COMMON *const cm = &pbi->common;
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int i;
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vp9_remove_common(cm);
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vp9_worker_end(&pbi->lf_worker);
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vpx_free(pbi->lf_worker.data1);
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vpx_free(pbi->tile_data);
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for (i = 0; i < pbi->num_tile_workers; ++i) {
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VP9Worker *const worker = &pbi->tile_workers[i];
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vp9_worker_end(worker);
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vpx_free(worker->data1);
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vpx_free(worker->data2);
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}
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vpx_free(pbi->tile_workers);
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if (pbi->num_tile_workers) {
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const int sb_rows =
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mi_cols_aligned_to_sb(cm->mi_rows) >> MI_BLOCK_SIZE_LOG2;
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vp9_loop_filter_dealloc(&pbi->lf_row_sync, sb_rows);
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}
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vpx_free(pbi);
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}
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static int equal_dimensions(const YV12_BUFFER_CONFIG *a,
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const YV12_BUFFER_CONFIG *b) {
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return a->y_height == b->y_height && a->y_width == b->y_width &&
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a->uv_height == b->uv_height && a->uv_width == b->uv_width;
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}
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vpx_codec_err_t vp9_copy_reference_dec(VP9Decoder *pbi,
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VP9_REFFRAME ref_frame_flag,
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YV12_BUFFER_CONFIG *sd) {
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VP9_COMMON *cm = &pbi->common;
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/* TODO(jkoleszar): The decoder doesn't have any real knowledge of what the
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* encoder is using the frame buffers for. This is just a stub to keep the
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* vpxenc --test-decode functionality working, and will be replaced in a
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* later commit that adds VP9-specific controls for this functionality.
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*/
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if (ref_frame_flag == VP9_LAST_FLAG) {
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const YV12_BUFFER_CONFIG *const cfg =
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&cm->frame_bufs[cm->ref_frame_map[0]].buf;
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if (!equal_dimensions(cfg, sd))
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vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
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"Incorrect buffer dimensions");
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else
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vp8_yv12_copy_frame(cfg, sd);
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} else {
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vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
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"Invalid reference frame");
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}
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return cm->error.error_code;
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}
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vpx_codec_err_t vp9_set_reference_dec(VP9_COMMON *cm,
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VP9_REFFRAME ref_frame_flag,
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YV12_BUFFER_CONFIG *sd) {
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RefBuffer *ref_buf = NULL;
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// TODO(jkoleszar): The decoder doesn't have any real knowledge of what the
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// encoder is using the frame buffers for. This is just a stub to keep the
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// vpxenc --test-decode functionality working, and will be replaced in a
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// later commit that adds VP9-specific controls for this functionality.
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if (ref_frame_flag == VP9_LAST_FLAG) {
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ref_buf = &cm->frame_refs[0];
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} else if (ref_frame_flag == VP9_GOLD_FLAG) {
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ref_buf = &cm->frame_refs[1];
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} else if (ref_frame_flag == VP9_ALT_FLAG) {
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ref_buf = &cm->frame_refs[2];
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} else {
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vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
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"Invalid reference frame");
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return cm->error.error_code;
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}
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if (!equal_dimensions(ref_buf->buf, sd)) {
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vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
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"Incorrect buffer dimensions");
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} else {
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int *ref_fb_ptr = &ref_buf->idx;
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// Find an empty frame buffer.
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const int free_fb = get_free_fb(cm);
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// Decrease ref_count since it will be increased again in
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// ref_cnt_fb() below.
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cm->frame_bufs[free_fb].ref_count--;
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// Manage the reference counters and copy image.
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ref_cnt_fb(cm->frame_bufs, ref_fb_ptr, free_fb);
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ref_buf->buf = &cm->frame_bufs[*ref_fb_ptr].buf;
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vp8_yv12_copy_frame(sd, ref_buf->buf);
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}
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return cm->error.error_code;
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}
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int vp9_get_reference_dec(VP9Decoder *pbi, int index, YV12_BUFFER_CONFIG **fb) {
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VP9_COMMON *cm = &pbi->common;
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if (index < 0 || index >= REF_FRAMES)
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return -1;
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*fb = &cm->frame_bufs[cm->ref_frame_map[index]].buf;
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return 0;
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}
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/* If any buffer updating is signaled it should be done here. */
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static void swap_frame_buffers(VP9Decoder *pbi) {
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int ref_index = 0, mask;
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VP9_COMMON *const cm = &pbi->common;
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for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) {
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if (mask & 1) {
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const int old_idx = cm->ref_frame_map[ref_index];
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ref_cnt_fb(cm->frame_bufs, &cm->ref_frame_map[ref_index],
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cm->new_fb_idx);
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if (old_idx >= 0 && cm->frame_bufs[old_idx].ref_count == 0)
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cm->release_fb_cb(cm->cb_priv,
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&cm->frame_bufs[old_idx].raw_frame_buffer);
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}
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++ref_index;
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}
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cm->frame_to_show = get_frame_new_buffer(cm);
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cm->frame_bufs[cm->new_fb_idx].ref_count--;
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// Invalidate these references until the next frame starts.
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for (ref_index = 0; ref_index < 3; ref_index++)
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cm->frame_refs[ref_index].idx = INT_MAX;
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}
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int vp9_receive_compressed_data(VP9Decoder *pbi,
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size_t size, const uint8_t **psource) {
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VP9_COMMON *const cm = &pbi->common;
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const uint8_t *source = *psource;
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int retcode = 0;
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cm->error.error_code = VPX_CODEC_OK;
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if (size == 0) {
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// This is used to signal that we are missing frames.
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// We do not know if the missing frame(s) was supposed to update
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// any of the reference buffers, but we act conservative and
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// mark only the last buffer as corrupted.
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//
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// TODO(jkoleszar): Error concealment is undefined and non-normative
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// at this point, but if it becomes so, [0] may not always be the correct
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// thing to do here.
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if (cm->frame_refs[0].idx != INT_MAX)
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cm->frame_refs[0].buf->corrupted = 1;
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}
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// Check if the previous frame was a frame without any references to it.
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if (cm->new_fb_idx >= 0 && cm->frame_bufs[cm->new_fb_idx].ref_count == 0)
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cm->release_fb_cb(cm->cb_priv,
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&cm->frame_bufs[cm->new_fb_idx].raw_frame_buffer);
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cm->new_fb_idx = get_free_fb(cm);
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if (setjmp(cm->error.jmp)) {
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cm->error.setjmp = 0;
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// We do not know if the missing frame(s) was supposed to update
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// any of the reference buffers, but we act conservative and
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// mark only the last buffer as corrupted.
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//
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// TODO(jkoleszar): Error concealment is undefined and non-normative
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// at this point, but if it becomes so, [0] may not always be the correct
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// thing to do here.
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if (cm->frame_refs[0].idx != INT_MAX)
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cm->frame_refs[0].buf->corrupted = 1;
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if (cm->frame_bufs[cm->new_fb_idx].ref_count > 0)
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cm->frame_bufs[cm->new_fb_idx].ref_count--;
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return -1;
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}
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cm->error.setjmp = 1;
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retcode = vp9_decode_frame(pbi, source, source + size, psource);
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if (retcode < 0) {
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cm->error.error_code = VPX_CODEC_ERROR;
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cm->error.setjmp = 0;
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if (cm->frame_bufs[cm->new_fb_idx].ref_count > 0)
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cm->frame_bufs[cm->new_fb_idx].ref_count--;
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return retcode;
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}
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swap_frame_buffers(pbi);
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vp9_clear_system_state();
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cm->last_width = cm->width;
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cm->last_height = cm->height;
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if (!cm->show_existing_frame)
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cm->last_show_frame = cm->show_frame;
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if (cm->show_frame) {
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if (!cm->show_existing_frame)
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vp9_swap_mi_and_prev_mi(cm);
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cm->current_video_frame++;
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}
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pbi->ready_for_new_data = 0;
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cm->error.setjmp = 0;
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return retcode;
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}
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int vp9_get_raw_frame(VP9Decoder *pbi, YV12_BUFFER_CONFIG *sd,
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vp9_ppflags_t *flags) {
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int ret = -1;
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#if !CONFIG_VP9_POSTPROC
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(void)*flags;
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#endif
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if (pbi->ready_for_new_data == 1)
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return ret;
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/* no raw frame to show!!! */
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if (pbi->common.show_frame == 0)
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return ret;
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pbi->ready_for_new_data = 1;
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#if CONFIG_VP9_POSTPROC
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ret = vp9_post_proc_frame(&pbi->common, sd, flags);
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#else
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*sd = *pbi->common.frame_to_show;
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ret = 0;
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#endif /*!CONFIG_POSTPROC*/
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vp9_clear_system_state();
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return ret;
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}
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