diff options
Diffstat (limited to 'media/libvpx/libvpx/vp9/decoder/vp9_decoder.c')
| -rw-r--r-- | media/libvpx/libvpx/vp9/decoder/vp9_decoder.c | 585 |
1 files changed, 585 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/decoder/vp9_decoder.c b/media/libvpx/libvpx/vp9/decoder/vp9_decoder.c new file mode 100644 index 0000000000..5a7e9f9ab3 --- /dev/null +++ b/media/libvpx/libvpx/vp9/decoder/vp9_decoder.c @@ -0,0 +1,585 @@ +/* + * 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 <assert.h> +#include <limits.h> +#include <stdio.h> + +#include "./vp9_rtcd.h" +#include "./vpx_dsp_rtcd.h" +#include "./vpx_scale_rtcd.h" + +#include "vpx_mem/vpx_mem.h" +#include "vpx_ports/system_state.h" +#include "vpx_ports/vpx_once.h" +#include "vpx_ports/vpx_timer.h" +#include "vpx_scale/vpx_scale.h" +#include "vpx_util/vpx_thread.h" + +#include "vp9/common/vp9_alloccommon.h" +#include "vp9/common/vp9_loopfilter.h" +#include "vp9/common/vp9_onyxc_int.h" +#if CONFIG_VP9_POSTPROC +#include "vp9/common/vp9_postproc.h" +#endif +#include "vp9/common/vp9_quant_common.h" +#include "vp9/common/vp9_reconintra.h" + +#include "vp9/decoder/vp9_decodeframe.h" +#include "vp9/decoder/vp9_decoder.h" +#include "vp9/decoder/vp9_detokenize.h" + +static void initialize_dec(void) { + static volatile int init_done = 0; + + if (!init_done) { + vp9_rtcd(); + vpx_dsp_rtcd(); + vpx_scale_rtcd(); + vp9_init_intra_predictors(); + init_done = 1; + } +} + +static void vp9_dec_setup_mi(VP9_COMMON *cm) { + cm->mi = cm->mip + cm->mi_stride + 1; + cm->mi_grid_visible = cm->mi_grid_base + cm->mi_stride + 1; + memset(cm->mi_grid_base, 0, + cm->mi_stride * (cm->mi_rows + 1) * sizeof(*cm->mi_grid_base)); +} + +void vp9_dec_alloc_row_mt_mem(RowMTWorkerData *row_mt_worker_data, + VP9_COMMON *cm, int num_sbs, int max_threads, + int num_jobs) { + int plane; + const size_t dqcoeff_size = (num_sbs << DQCOEFFS_PER_SB_LOG2) * + sizeof(*row_mt_worker_data->dqcoeff[0]); + row_mt_worker_data->num_jobs = num_jobs; +#if CONFIG_MULTITHREAD + { + int i; + CHECK_MEM_ERROR( + &cm->error, row_mt_worker_data->recon_sync_mutex, + vpx_malloc(sizeof(*row_mt_worker_data->recon_sync_mutex) * num_jobs)); + if (row_mt_worker_data->recon_sync_mutex) { + for (i = 0; i < num_jobs; ++i) { + pthread_mutex_init(&row_mt_worker_data->recon_sync_mutex[i], NULL); + } + } + + CHECK_MEM_ERROR( + &cm->error, row_mt_worker_data->recon_sync_cond, + vpx_malloc(sizeof(*row_mt_worker_data->recon_sync_cond) * num_jobs)); + if (row_mt_worker_data->recon_sync_cond) { + for (i = 0; i < num_jobs; ++i) { + pthread_cond_init(&row_mt_worker_data->recon_sync_cond[i], NULL); + } + } + } +#endif + row_mt_worker_data->num_sbs = num_sbs; + for (plane = 0; plane < 3; ++plane) { + CHECK_MEM_ERROR(&cm->error, row_mt_worker_data->dqcoeff[plane], + vpx_memalign(32, dqcoeff_size)); + memset(row_mt_worker_data->dqcoeff[plane], 0, dqcoeff_size); + CHECK_MEM_ERROR(&cm->error, row_mt_worker_data->eob[plane], + vpx_calloc(num_sbs << EOBS_PER_SB_LOG2, + sizeof(*row_mt_worker_data->eob[plane]))); + } + CHECK_MEM_ERROR(&cm->error, row_mt_worker_data->partition, + vpx_calloc(num_sbs * PARTITIONS_PER_SB, + sizeof(*row_mt_worker_data->partition))); + CHECK_MEM_ERROR(&cm->error, row_mt_worker_data->recon_map, + vpx_calloc(num_sbs, sizeof(*row_mt_worker_data->recon_map))); + + // allocate memory for thread_data + if (row_mt_worker_data->thread_data == NULL) { + const size_t thread_size = + max_threads * sizeof(*row_mt_worker_data->thread_data); + CHECK_MEM_ERROR(&cm->error, row_mt_worker_data->thread_data, + vpx_memalign(32, thread_size)); + } +} + +void vp9_dec_free_row_mt_mem(RowMTWorkerData *row_mt_worker_data) { + if (row_mt_worker_data != NULL) { + int plane; +#if CONFIG_MULTITHREAD + int i; + if (row_mt_worker_data->recon_sync_mutex != NULL) { + for (i = 0; i < row_mt_worker_data->num_jobs; ++i) { + pthread_mutex_destroy(&row_mt_worker_data->recon_sync_mutex[i]); + } + vpx_free(row_mt_worker_data->recon_sync_mutex); + row_mt_worker_data->recon_sync_mutex = NULL; + } + if (row_mt_worker_data->recon_sync_cond != NULL) { + for (i = 0; i < row_mt_worker_data->num_jobs; ++i) { + pthread_cond_destroy(&row_mt_worker_data->recon_sync_cond[i]); + } + vpx_free(row_mt_worker_data->recon_sync_cond); + row_mt_worker_data->recon_sync_cond = NULL; + } +#endif + for (plane = 0; plane < 3; ++plane) { + vpx_free(row_mt_worker_data->eob[plane]); + row_mt_worker_data->eob[plane] = NULL; + vpx_free(row_mt_worker_data->dqcoeff[plane]); + row_mt_worker_data->dqcoeff[plane] = NULL; + } + vpx_free(row_mt_worker_data->partition); + row_mt_worker_data->partition = NULL; + vpx_free(row_mt_worker_data->recon_map); + row_mt_worker_data->recon_map = NULL; + vpx_free(row_mt_worker_data->thread_data); + row_mt_worker_data->thread_data = NULL; + } +} + +static int vp9_dec_alloc_mi(VP9_COMMON *cm, int mi_size) { + cm->mip = vpx_calloc(mi_size, sizeof(*cm->mip)); + if (!cm->mip) return 1; + cm->mi_alloc_size = mi_size; + cm->mi_grid_base = (MODE_INFO **)vpx_calloc(mi_size, sizeof(MODE_INFO *)); + if (!cm->mi_grid_base) return 1; + return 0; +} + +static void vp9_dec_free_mi(VP9_COMMON *cm) { +#if CONFIG_VP9_POSTPROC + // MFQE allocates an additional mip and swaps it with cm->mip. + vpx_free(cm->postproc_state.prev_mip); + cm->postproc_state.prev_mip = NULL; +#endif + vpx_free(cm->mip); + cm->mip = NULL; + vpx_free(cm->mi_grid_base); + cm->mi_grid_base = NULL; + cm->mi_alloc_size = 0; +} + +VP9Decoder *vp9_decoder_create(BufferPool *const pool) { + VP9Decoder *volatile const pbi = vpx_memalign(32, sizeof(*pbi)); + VP9_COMMON *volatile const cm = pbi ? &pbi->common : NULL; + + if (!cm) return NULL; + + vp9_zero(*pbi); + + if (setjmp(cm->error.jmp)) { + cm->error.setjmp = 0; + vp9_decoder_remove(pbi); + return NULL; + } + + cm->error.setjmp = 1; + + CHECK_MEM_ERROR(&cm->error, cm->fc, + (FRAME_CONTEXT *)vpx_calloc(1, sizeof(*cm->fc))); + CHECK_MEM_ERROR( + &cm->error, cm->frame_contexts, + (FRAME_CONTEXT *)vpx_calloc(FRAME_CONTEXTS, sizeof(*cm->frame_contexts))); + + pbi->need_resync = 1; + 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)); + + init_frame_indexes(cm); + pbi->ready_for_new_data = 1; + pbi->common.buffer_pool = pool; + + cm->bit_depth = VPX_BITS_8; + cm->dequant_bit_depth = VPX_BITS_8; + + cm->alloc_mi = vp9_dec_alloc_mi; + cm->free_mi = vp9_dec_free_mi; + cm->setup_mi = vp9_dec_setup_mi; + + vp9_loop_filter_init(cm); + + cm->error.setjmp = 0; + + vpx_get_worker_interface()->init(&pbi->lf_worker); + + return pbi; +} + +void vp9_decoder_remove(VP9Decoder *pbi) { + int i; + + if (!pbi) return; + + vpx_get_worker_interface()->end(&pbi->lf_worker); + vpx_free(pbi->lf_worker.data1); + + for (i = 0; i < pbi->num_tile_workers; ++i) { + VPxWorker *const worker = &pbi->tile_workers[i]; + vpx_get_worker_interface()->end(worker); + } + + vpx_free(pbi->tile_worker_data); + vpx_free(pbi->tile_workers); + + if (pbi->num_tile_workers > 0) { + vp9_loop_filter_dealloc(&pbi->lf_row_sync); + } + + if (pbi->row_mt == 1) { + vp9_dec_free_row_mt_mem(pbi->row_mt_worker_data); + if (pbi->row_mt_worker_data != NULL) { + vp9_jobq_deinit(&pbi->row_mt_worker_data->jobq); + vpx_free(pbi->row_mt_worker_data->jobq_buf); +#if CONFIG_MULTITHREAD + pthread_mutex_destroy(&pbi->row_mt_worker_data->recon_done_mutex); +#endif + } + vpx_free(pbi->row_mt_worker_data); + } + + vp9_remove_common(&pbi->common); + vpx_free(pbi); +} + +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; +} + +vpx_codec_err_t vp9_copy_reference_dec(VP9Decoder *pbi, + VP9_REFFRAME ref_frame_flag, + YV12_BUFFER_CONFIG *sd) { + VP9_COMMON *cm = &pbi->common; + + /* TODO(jkoleszar): The decoder doesn't have any real knowledge of what the + * encoder is using the frame buffers for. This is just a stub to keep the + * vpxenc --test-decode functionality working, and will be replaced in a + * later commit that adds VP9-specific controls for this functionality. + */ + if (ref_frame_flag == VP9_LAST_FLAG) { + const YV12_BUFFER_CONFIG *const cfg = get_ref_frame(cm, 0); + if (cfg == NULL) { + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, + "No 'last' reference frame"); + return VPX_CODEC_ERROR; + } + if (!equal_dimensions(cfg, sd)) + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, + "Incorrect buffer dimensions"); + else + vpx_yv12_copy_frame(cfg, sd); + } else { + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, "Invalid reference frame"); + } + + return cm->error.error_code; +} + +vpx_codec_err_t vp9_set_reference_dec(VP9_COMMON *cm, + VP9_REFFRAME ref_frame_flag, + YV12_BUFFER_CONFIG *sd) { + int idx; + YV12_BUFFER_CONFIG *ref_buf = NULL; + + // TODO(jkoleszar): The decoder doesn't have any real knowledge of what the + // encoder is using the frame buffers for. This is just a stub to keep the + // vpxenc --test-decode functionality working, and will be replaced in a + // later commit that adds VP9-specific controls for this functionality. + // (Yunqing) The set_reference control depends on the following setting in + // encoder. + // cpi->lst_fb_idx = 0; + // cpi->gld_fb_idx = 1; + // cpi->alt_fb_idx = 2; + if (ref_frame_flag == VP9_LAST_FLAG) { + idx = cm->ref_frame_map[0]; + } else if (ref_frame_flag == VP9_GOLD_FLAG) { + idx = cm->ref_frame_map[1]; + } else if (ref_frame_flag == VP9_ALT_FLAG) { + idx = cm->ref_frame_map[2]; + } else { + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, "Invalid reference frame"); + return cm->error.error_code; + } + + if (idx < 0 || idx >= FRAME_BUFFERS) { + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, + "Invalid reference frame map"); + return cm->error.error_code; + } + + // Get the destination reference buffer. + ref_buf = &cm->buffer_pool->frame_bufs[idx].buf; + + if (!equal_dimensions(ref_buf, sd)) { + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, + "Incorrect buffer dimensions"); + } else { + // Overwrite the reference frame buffer. + vpx_yv12_copy_frame(sd, ref_buf); + } + + return cm->error.error_code; +} + +/* If any buffer updating is signaled it should be done here. */ +static void swap_frame_buffers(VP9Decoder *pbi) { + int ref_index = 0, mask; + VP9_COMMON *const cm = &pbi->common; + BufferPool *const pool = cm->buffer_pool; + RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs; + + 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 in reference map. + 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. + for (; ref_index < REF_FRAMES && !cm->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]; + } + pbi->hold_ref_buf = 0; + cm->frame_to_show = get_frame_new_buffer(cm); + + --frame_bufs[cm->new_fb_idx].ref_count; + + // Invalidate these references until the next frame starts. + for (ref_index = 0; ref_index < 3; ref_index++) + cm->frame_refs[ref_index].idx = -1; +} + +static void release_fb_on_decoder_exit(VP9Decoder *pbi) { + const VPxWorkerInterface *const winterface = vpx_get_worker_interface(); + VP9_COMMON *volatile const cm = &pbi->common; + BufferPool *volatile const pool = cm->buffer_pool; + RefCntBuffer *volatile const frame_bufs = cm->buffer_pool->frame_bufs; + int i; + + // 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_tile_workers; ++i) { + winterface->sync(&pbi->tile_workers[i]); + } + + // 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 in reference map. + if (mask & 1) { + decrease_ref_count(old_idx, frame_bufs, pool); + } + ++ref_index; + } + + // Current thread releases the holding of reference frame. + for (; ref_index < REF_FRAMES && !cm->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; + } +} + +int vp9_receive_compressed_data(VP9Decoder *pbi, size_t size, + const uint8_t **psource) { + VP9_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; + int retcode = 0; + cm->error.error_code = VPX_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; + } + } + + pbi->ready_for_new_data = 0; + + // Check if the previous frame was a frame without any references to it. + if (cm->new_fb_idx >= 0 && frame_bufs[cm->new_fb_idx].ref_count == 0 && + !frame_bufs[cm->new_fb_idx].released) { + pool->release_fb_cb(pool->cb_priv, + &frame_bufs[cm->new_fb_idx].raw_frame_buffer); + frame_bufs[cm->new_fb_idx].released = 1; + } + + // 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) { + pbi->ready_for_new_data = 1; + release_fb_on_decoder_exit(pbi); + vpx_clear_system_state(); + vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, + "Unable to find free frame buffer"); + return cm->error.error_code; + } + + // Assign a MV array to the frame buffer. + cm->cur_frame = &pool->frame_bufs[cm->new_fb_idx]; + + pbi->hold_ref_buf = 0; + pbi->cur_buf = &frame_bufs[cm->new_fb_idx]; + + if (setjmp(cm->error.jmp)) { + cm->error.setjmp = 0; + pbi->ready_for_new_data = 1; + release_fb_on_decoder_exit(pbi); + // Release current frame. + decrease_ref_count(cm->new_fb_idx, frame_bufs, pool); + vpx_clear_system_state(); + return -1; + } + + cm->error.setjmp = 1; + vp9_decode_frame(pbi, source, source + size, psource); + + swap_frame_buffers(pbi); + + vpx_clear_system_state(); + + if (!cm->show_existing_frame) { + cm->last_show_frame = cm->show_frame; + cm->prev_frame = cm->cur_frame; + if (cm->seg.enabled) vp9_swap_current_and_last_seg_map(cm); + } + + if (cm->show_frame) cm->cur_show_frame_fb_idx = cm->new_fb_idx; + + // Update progress in frame parallel decode. + cm->last_width = cm->width; + cm->last_height = cm->height; + if (cm->show_frame) { + cm->current_video_frame++; + } + + cm->error.setjmp = 0; + return retcode; +} + +int vp9_get_raw_frame(VP9Decoder *pbi, YV12_BUFFER_CONFIG *sd, + vp9_ppflags_t *flags) { + VP9_COMMON *const cm = &pbi->common; + int ret = -1; +#if !CONFIG_VP9_POSTPROC + (void)*flags; +#endif + + if (pbi->ready_for_new_data == 1) return ret; + + pbi->ready_for_new_data = 1; + + /* no raw frame to show!!! */ + if (!cm->show_frame) return ret; + + pbi->ready_for_new_data = 1; + +#if CONFIG_VP9_POSTPROC + if (!cm->show_existing_frame) { + ret = vp9_post_proc_frame(cm, sd, flags, cm->width); + } else { + *sd = *cm->frame_to_show; + ret = 0; + } +#else + *sd = *cm->frame_to_show; + ret = 0; +#endif /*!CONFIG_POSTPROC*/ + vpx_clear_system_state(); + return ret; +} + +vpx_codec_err_t vp9_parse_superframe_index(const uint8_t *data, size_t data_sz, + uint32_t sizes[8], int *count, + vpx_decrypt_cb decrypt_cb, + void *decrypt_state) { + // A chunk ending with a byte matching 0xc0 is an invalid chunk unless + // it is a super frame index. If the last byte of real video compression + // data is 0xc0 the encoder must add a 0 byte. If we have the marker but + // not the associated matching marker byte at the front of the index we have + // an invalid bitstream and need to return an error. + + uint8_t marker; + + assert(data_sz); + marker = read_marker(decrypt_cb, decrypt_state, data + data_sz - 1); + *count = 0; + + if ((marker & 0xe0) == 0xc0) { + const uint32_t frames = (marker & 0x7) + 1; + const uint32_t mag = ((marker >> 3) & 0x3) + 1; + const size_t index_sz = 2 + mag * frames; + + // This chunk is marked as having a superframe index but doesn't have + // enough data for it, thus it's an invalid superframe index. + if (data_sz < index_sz) return VPX_CODEC_CORRUPT_FRAME; + + { + const uint8_t marker2 = + read_marker(decrypt_cb, decrypt_state, data + data_sz - index_sz); + + // This chunk is marked as having a superframe index but doesn't have + // the matching marker byte at the front of the index therefore it's an + // invalid chunk. + if (marker != marker2) return VPX_CODEC_CORRUPT_FRAME; + } + + { + // Found a valid superframe index. + uint32_t i, j; + const uint8_t *x = &data[data_sz - index_sz + 1]; + + // Frames has a maximum of 8 and mag has a maximum of 4. + uint8_t clear_buffer[32]; + assert(sizeof(clear_buffer) >= frames * mag); + if (decrypt_cb) { + decrypt_cb(decrypt_state, x, clear_buffer, frames * mag); + x = clear_buffer; + } + + for (i = 0; i < frames; ++i) { + uint32_t this_sz = 0; + + for (j = 0; j < mag; ++j) this_sz |= ((uint32_t)(*x++)) << (j * 8); + sizes[i] = this_sz; + } + *count = frames; + } + } + return VPX_CODEC_OK; +} |