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John Koleszar authored
This patch allows coding frames using references of different resolution, in ZEROMV mode. For compound prediction, either reference may be scaled. To test, I use the resize_test and enable WRITE_RECON_BUFFER in vp9_onyxd_if.c. It's also useful to apply this patch to test/i420_video_source.h: --- a/test/i420_video_source.h +++ b/test/i420_video_source.h @@ -93,6 +93,7 @@ class I420VideoSource : public VideoSource { virtual void FillFrame() { // Read a frame from input_file. + if (frame_ != 3) if (fread(img_->img_data, raw_sz_, 1, input_file_) == 0) { limit_ = frame_; } This forces the frame that the resolution changes on to be coded with no motion, only scaling, and improves the quality of the result. Change-Id: I1ee75d19a437ff801192f767fd02a36bcbd1d496eb939f45
vp9_decodeframe.c 47.50 KiB
/* * 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 "./vp9_rtcd.h"#include "./vpx_scale_rtcd.h"#include "vpx_mem/vpx_mem.h"#include "vpx_scale/vpx_scale.h"#include "vp9/common/vp9_alloccommon.h"#include "vp9/common/vp9_common.h"#include "vp9/common/vp9_entropy.h"#include "vp9/common/vp9_entropymode.h"#include "vp9/common/vp9_idct.h"#include "vp9/common/vp9_pred_common.h"#include "vp9/common/vp9_quant_common.h"#include "vp9/common/vp9_reconintra.h"#include "vp9/common/vp9_reconinter.h"#include "vp9/common/vp9_seg_common.h"#include "vp9/common/vp9_tile_common.h"#include "vp9/decoder/vp9_dboolhuff.h"#include "vp9/decoder/vp9_decodeframe.h"#include "vp9/decoder/vp9_detokenize.h"#include "vp9/decoder/vp9_decodemv.h"#include "vp9/decoder/vp9_dsubexp.h"#include "vp9/decoder/vp9_onyxd_int.h"#include "vp9/decoder/vp9_read_bit_buffer.h"#include "vp9/decoder/vp9_thread.h"typedef struct TileWorkerData { VP9_COMMON *cm; vp9_reader bit_reader; DECLARE_ALIGNED(16, MACROBLOCKD, xd); DECLARE_ALIGNED(16, unsigned char, token_cache[1024]); DECLARE_ALIGNED(16, int16_t, dqcoeff[MAX_MB_PLANE][64 * 64]); DECLARE_ALIGNED(16, uint16_t, eobs[MAX_MB_PLANE][256]);} TileWorkerData;static int read_be32(const uint8_t *p) { return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];}static int is_compound_prediction_allowed(const VP9_COMMON *cm) { int i; for (i = 1; i < ALLOWED_REFS_PER_FRAME; ++i) if (cm->ref_frame_sign_bias[i + 1] != cm->ref_frame_sign_bias[1]) return 1; return 0;}static void setup_compound_prediction(VP9_COMMON *cm) { if (cm->ref_frame_sign_bias[LAST_FRAME] == cm->ref_frame_sign_bias[GOLDEN_FRAME]) { cm->comp_fixed_ref = ALTREF_FRAME; cm->comp_var_ref[0] = LAST_FRAME; cm->comp_var_ref[1] = GOLDEN_FRAME; } else if (cm->ref_frame_sign_bias[LAST_FRAME] == cm->ref_frame_sign_bias[ALTREF_FRAME]) { cm->comp_fixed_ref = GOLDEN_FRAME;