1233d2500723e5594f3e7c70896ffeeef32b9c950ywan/* 2233d2500723e5594f3e7c70896ffeeef32b9c950ywan * Copyright (c) 2011 The WebM project authors. All Rights Reserved. 3233d2500723e5594f3e7c70896ffeeef32b9c950ywan * 4233d2500723e5594f3e7c70896ffeeef32b9c950ywan * Use of this source code is governed by a BSD-style license 5233d2500723e5594f3e7c70896ffeeef32b9c950ywan * that can be found in the LICENSE file in the root of the source 6233d2500723e5594f3e7c70896ffeeef32b9c950ywan * tree. An additional intellectual property rights grant can be found 7233d2500723e5594f3e7c70896ffeeef32b9c950ywan * in the file PATENTS. All contributing project authors may 8233d2500723e5594f3e7c70896ffeeef32b9c950ywan * be found in the AUTHORS file in the root of the source tree. 9233d2500723e5594f3e7c70896ffeeef32b9c950ywan */ 10233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include <assert.h> 11233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include <stdlib.h> 12233d2500723e5594f3e7c70896ffeeef32b9c950ywan 13233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "./vpx_config.h" 14233d2500723e5594f3e7c70896ffeeef32b9c950ywan 15233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vp9/common/vp9_common.h" 16233d2500723e5594f3e7c70896ffeeef32b9c950ywan 17233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vp9/encoder/vp9_extend.h" 18233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vp9/encoder/vp9_lookahead.h" 19233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vp9/encoder/vp9_onyx_int.h" 20233d2500723e5594f3e7c70896ffeeef32b9c950ywan 21233d2500723e5594f3e7c70896ffeeef32b9c950ywanstruct lookahead_ctx { 22233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int max_sz; /* Absolute size of the queue */ 23233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int sz; /* Number of buffers currently in the queue */ 24233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int read_idx; /* Read index */ 25233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int write_idx; /* Write index */ 26233d2500723e5594f3e7c70896ffeeef32b9c950ywan struct lookahead_entry *buf; /* Buffer list */ 27233d2500723e5594f3e7c70896ffeeef32b9c950ywan}; 28233d2500723e5594f3e7c70896ffeeef32b9c950ywan 29233d2500723e5594f3e7c70896ffeeef32b9c950ywan 30233d2500723e5594f3e7c70896ffeeef32b9c950ywan/* Return the buffer at the given absolute index and increment the index */ 31233d2500723e5594f3e7c70896ffeeef32b9c950ywanstatic struct lookahead_entry *pop(struct lookahead_ctx *ctx, 32233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int *idx) { 33233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int index = *idx; 34233d2500723e5594f3e7c70896ffeeef32b9c950ywan struct lookahead_entry *buf = ctx->buf + index; 35233d2500723e5594f3e7c70896ffeeef32b9c950ywan 36233d2500723e5594f3e7c70896ffeeef32b9c950ywan assert(index < ctx->max_sz); 37233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (++index >= ctx->max_sz) 38233d2500723e5594f3e7c70896ffeeef32b9c950ywan index -= ctx->max_sz; 39233d2500723e5594f3e7c70896ffeeef32b9c950ywan *idx = index; 40233d2500723e5594f3e7c70896ffeeef32b9c950ywan return buf; 41233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 42233d2500723e5594f3e7c70896ffeeef32b9c950ywan 43233d2500723e5594f3e7c70896ffeeef32b9c950ywan 44233d2500723e5594f3e7c70896ffeeef32b9c950ywanvoid vp9_lookahead_destroy(struct lookahead_ctx *ctx) { 45233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (ctx) { 46233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (ctx->buf) { 47233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int i; 48233d2500723e5594f3e7c70896ffeeef32b9c950ywan 49233d2500723e5594f3e7c70896ffeeef32b9c950ywan for (i = 0; i < ctx->max_sz; i++) 50233d2500723e5594f3e7c70896ffeeef32b9c950ywan vp9_free_frame_buffer(&ctx->buf[i].img); 51233d2500723e5594f3e7c70896ffeeef32b9c950ywan free(ctx->buf); 52233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 53233d2500723e5594f3e7c70896ffeeef32b9c950ywan free(ctx); 54233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 55233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 56233d2500723e5594f3e7c70896ffeeef32b9c950ywan 57233d2500723e5594f3e7c70896ffeeef32b9c950ywan 58233d2500723e5594f3e7c70896ffeeef32b9c950ywanstruct lookahead_ctx *vp9_lookahead_init(unsigned int width, 59233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int height, 60233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int subsampling_x, 61233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int subsampling_y, 62233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int depth) { 63233d2500723e5594f3e7c70896ffeeef32b9c950ywan struct lookahead_ctx *ctx = NULL; 64233d2500723e5594f3e7c70896ffeeef32b9c950ywan 65233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Clamp the lookahead queue depth 66233d2500723e5594f3e7c70896ffeeef32b9c950ywan depth = clamp(depth, 1, MAX_LAG_BUFFERS); 67233d2500723e5594f3e7c70896ffeeef32b9c950ywan 68233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Allocate memory to keep previous source frames available. 69233d2500723e5594f3e7c70896ffeeef32b9c950ywan depth += MAX_PRE_FRAMES; 70233d2500723e5594f3e7c70896ffeeef32b9c950ywan 71233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Allocate the lookahead structures 72233d2500723e5594f3e7c70896ffeeef32b9c950ywan ctx = calloc(1, sizeof(*ctx)); 73233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (ctx) { 74233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int i; 75233d2500723e5594f3e7c70896ffeeef32b9c950ywan ctx->max_sz = depth; 76233d2500723e5594f3e7c70896ffeeef32b9c950ywan ctx->buf = calloc(depth, sizeof(*ctx->buf)); 77233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!ctx->buf) 78233d2500723e5594f3e7c70896ffeeef32b9c950ywan goto bail; 79233d2500723e5594f3e7c70896ffeeef32b9c950ywan for (i = 0; i < depth; i++) 80233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (vp9_alloc_frame_buffer(&ctx->buf[i].img, 81233d2500723e5594f3e7c70896ffeeef32b9c950ywan width, height, subsampling_x, subsampling_y, 82233d2500723e5594f3e7c70896ffeeef32b9c950ywan VP9_ENC_BORDER_IN_PIXELS)) 83233d2500723e5594f3e7c70896ffeeef32b9c950ywan goto bail; 84233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 85233d2500723e5594f3e7c70896ffeeef32b9c950ywan return ctx; 86233d2500723e5594f3e7c70896ffeeef32b9c950ywan bail: 87233d2500723e5594f3e7c70896ffeeef32b9c950ywan vp9_lookahead_destroy(ctx); 88233d2500723e5594f3e7c70896ffeeef32b9c950ywan return NULL; 89233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 90233d2500723e5594f3e7c70896ffeeef32b9c950ywan 91233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define USE_PARTIAL_COPY 0 92233d2500723e5594f3e7c70896ffeeef32b9c950ywan 93233d2500723e5594f3e7c70896ffeeef32b9c950ywanint vp9_lookahead_push(struct lookahead_ctx *ctx, YV12_BUFFER_CONFIG *src, 94233d2500723e5594f3e7c70896ffeeef32b9c950ywan int64_t ts_start, int64_t ts_end, unsigned int flags) { 95233d2500723e5594f3e7c70896ffeeef32b9c950ywan struct lookahead_entry *buf; 96233d2500723e5594f3e7c70896ffeeef32b9c950ywan#if USE_PARTIAL_COPY 97233d2500723e5594f3e7c70896ffeeef32b9c950ywan int row, col, active_end; 98233d2500723e5594f3e7c70896ffeeef32b9c950ywan int mb_rows = (src->y_height + 15) >> 4; 99233d2500723e5594f3e7c70896ffeeef32b9c950ywan int mb_cols = (src->y_width + 15) >> 4; 100233d2500723e5594f3e7c70896ffeeef32b9c950ywan#endif 101233d2500723e5594f3e7c70896ffeeef32b9c950ywan 102233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (ctx->sz + 1 + MAX_PRE_FRAMES > ctx->max_sz) 103233d2500723e5594f3e7c70896ffeeef32b9c950ywan return 1; 104233d2500723e5594f3e7c70896ffeeef32b9c950ywan ctx->sz++; 105233d2500723e5594f3e7c70896ffeeef32b9c950ywan buf = pop(ctx, &ctx->write_idx); 106233d2500723e5594f3e7c70896ffeeef32b9c950ywan 107233d2500723e5594f3e7c70896ffeeef32b9c950ywan#if USE_PARTIAL_COPY 108233d2500723e5594f3e7c70896ffeeef32b9c950ywan // TODO(jkoleszar): This is disabled for now, as 109233d2500723e5594f3e7c70896ffeeef32b9c950ywan // vp9_copy_and_extend_frame_with_rect is not subsampling/alpha aware. 110233d2500723e5594f3e7c70896ffeeef32b9c950ywan 111233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Only do this partial copy if the following conditions are all met: 112233d2500723e5594f3e7c70896ffeeef32b9c950ywan // 1. Lookahead queue has has size of 1. 113233d2500723e5594f3e7c70896ffeeef32b9c950ywan // 2. Active map is provided. 114233d2500723e5594f3e7c70896ffeeef32b9c950ywan // 3. This is not a key frame, golden nor altref frame. 115233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (ctx->max_sz == 1 && active_map && !flags) { 116233d2500723e5594f3e7c70896ffeeef32b9c950ywan for (row = 0; row < mb_rows; ++row) { 117233d2500723e5594f3e7c70896ffeeef32b9c950ywan col = 0; 118233d2500723e5594f3e7c70896ffeeef32b9c950ywan 119233d2500723e5594f3e7c70896ffeeef32b9c950ywan while (1) { 120233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Find the first active macroblock in this row. 121233d2500723e5594f3e7c70896ffeeef32b9c950ywan for (; col < mb_cols; ++col) { 122233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (active_map[col]) 123233d2500723e5594f3e7c70896ffeeef32b9c950ywan break; 124233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 125233d2500723e5594f3e7c70896ffeeef32b9c950ywan 126233d2500723e5594f3e7c70896ffeeef32b9c950ywan // No more active macroblock in this row. 127233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (col == mb_cols) 128233d2500723e5594f3e7c70896ffeeef32b9c950ywan break; 129233d2500723e5594f3e7c70896ffeeef32b9c950ywan 130233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Find the end of active region in this row. 131233d2500723e5594f3e7c70896ffeeef32b9c950ywan active_end = col; 132233d2500723e5594f3e7c70896ffeeef32b9c950ywan 133233d2500723e5594f3e7c70896ffeeef32b9c950ywan for (; active_end < mb_cols; ++active_end) { 134233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!active_map[active_end]) 135233d2500723e5594f3e7c70896ffeeef32b9c950ywan break; 136233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 137233d2500723e5594f3e7c70896ffeeef32b9c950ywan 138233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Only copy this active region. 139233d2500723e5594f3e7c70896ffeeef32b9c950ywan vp9_copy_and_extend_frame_with_rect(src, &buf->img, 140233d2500723e5594f3e7c70896ffeeef32b9c950ywan row << 4, 141233d2500723e5594f3e7c70896ffeeef32b9c950ywan col << 4, 16, 142233d2500723e5594f3e7c70896ffeeef32b9c950ywan (active_end - col) << 4); 143233d2500723e5594f3e7c70896ffeeef32b9c950ywan 144233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Start again from the end of this active region. 145233d2500723e5594f3e7c70896ffeeef32b9c950ywan col = active_end; 146233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 147233d2500723e5594f3e7c70896ffeeef32b9c950ywan 148233d2500723e5594f3e7c70896ffeeef32b9c950ywan active_map += mb_cols; 149233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 150233d2500723e5594f3e7c70896ffeeef32b9c950ywan } else { 151233d2500723e5594f3e7c70896ffeeef32b9c950ywan vp9_copy_and_extend_frame(src, &buf->img); 152233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 153233d2500723e5594f3e7c70896ffeeef32b9c950ywan#else 154233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Partial copy not implemented yet 155233d2500723e5594f3e7c70896ffeeef32b9c950ywan vp9_copy_and_extend_frame(src, &buf->img); 156233d2500723e5594f3e7c70896ffeeef32b9c950ywan#endif 157233d2500723e5594f3e7c70896ffeeef32b9c950ywan 158233d2500723e5594f3e7c70896ffeeef32b9c950ywan buf->ts_start = ts_start; 159233d2500723e5594f3e7c70896ffeeef32b9c950ywan buf->ts_end = ts_end; 160233d2500723e5594f3e7c70896ffeeef32b9c950ywan buf->flags = flags; 161233d2500723e5594f3e7c70896ffeeef32b9c950ywan return 0; 162233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 163233d2500723e5594f3e7c70896ffeeef32b9c950ywan 164233d2500723e5594f3e7c70896ffeeef32b9c950ywan 165233d2500723e5594f3e7c70896ffeeef32b9c950ywanstruct lookahead_entry *vp9_lookahead_pop(struct lookahead_ctx *ctx, 166233d2500723e5594f3e7c70896ffeeef32b9c950ywan int drain) { 167233d2500723e5594f3e7c70896ffeeef32b9c950ywan struct lookahead_entry *buf = NULL; 168233d2500723e5594f3e7c70896ffeeef32b9c950ywan 169233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (ctx->sz && (drain || ctx->sz == ctx->max_sz - MAX_PRE_FRAMES)) { 170233d2500723e5594f3e7c70896ffeeef32b9c950ywan buf = pop(ctx, &ctx->read_idx); 171233d2500723e5594f3e7c70896ffeeef32b9c950ywan ctx->sz--; 172233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 173233d2500723e5594f3e7c70896ffeeef32b9c950ywan return buf; 174233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 175233d2500723e5594f3e7c70896ffeeef32b9c950ywan 176233d2500723e5594f3e7c70896ffeeef32b9c950ywan 177233d2500723e5594f3e7c70896ffeeef32b9c950ywanstruct lookahead_entry *vp9_lookahead_peek(struct lookahead_ctx *ctx, 178233d2500723e5594f3e7c70896ffeeef32b9c950ywan int index) { 179233d2500723e5594f3e7c70896ffeeef32b9c950ywan struct lookahead_entry *buf = NULL; 180233d2500723e5594f3e7c70896ffeeef32b9c950ywan 181233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (index >= 0) { 182233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Forward peek 183233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (index < (int)ctx->sz) { 184233d2500723e5594f3e7c70896ffeeef32b9c950ywan index += ctx->read_idx; 185233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (index >= (int)ctx->max_sz) 186233d2500723e5594f3e7c70896ffeeef32b9c950ywan index -= ctx->max_sz; 187233d2500723e5594f3e7c70896ffeeef32b9c950ywan buf = ctx->buf + index; 188233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 189233d2500723e5594f3e7c70896ffeeef32b9c950ywan } else if (index < 0) { 190233d2500723e5594f3e7c70896ffeeef32b9c950ywan // Backward peek 191233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (-index <= MAX_PRE_FRAMES) { 192233d2500723e5594f3e7c70896ffeeef32b9c950ywan index += ctx->read_idx; 193233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (index < 0) 194233d2500723e5594f3e7c70896ffeeef32b9c950ywan index += ctx->max_sz; 195233d2500723e5594f3e7c70896ffeeef32b9c950ywan buf = ctx->buf + index; 196233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 197233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 198233d2500723e5594f3e7c70896ffeeef32b9c950ywan 199233d2500723e5594f3e7c70896ffeeef32b9c950ywan return buf; 200233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 201233d2500723e5594f3e7c70896ffeeef32b9c950ywan 202233d2500723e5594f3e7c70896ffeeef32b9c950ywanunsigned int vp9_lookahead_depth(struct lookahead_ctx *ctx) { 203233d2500723e5594f3e7c70896ffeeef32b9c950ywan return ctx->sz; 204233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 205