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276a65b63d
--HG-- rename : media/libvpx/vp8/decoder/arm/armv6/dequant_idct_v6.asm => media/libvpx/vp8/common/arm/armv6/dequant_idct_v6.asm rename : media/libvpx/vp8/decoder/arm/armv6/dequantize_v6.asm => media/libvpx/vp8/common/arm/armv6/dequantize_v6.asm rename : media/libvpx/vp8/decoder/arm/armv6/idct_blk_v6.c => media/libvpx/vp8/common/arm/armv6/idct_blk_v6.c rename : media/libvpx/vp8/encoder/arm/armv6/vp8_mse16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_mse16x16_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_sad16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_sad16x16_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance16x16_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance16x16_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance8x8_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance8x8_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_h_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_h_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_hv_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_hv_armv6.asm rename : media/libvpx/vp8/encoder/arm/armv6/vp8_variance_halfpixvar16x16_v_armv6.asm => media/libvpx/vp8/common/arm/armv6/vp8_variance_halfpixvar16x16_v_armv6.asm rename : media/libvpx/vp8/decoder/arm/dequantize_arm.c => media/libvpx/vp8/common/arm/dequantize_arm.c rename : media/libvpx/vp8/decoder/arm/dequantize_arm.h => media/libvpx/vp8/common/arm/dequantize_arm.h rename : media/libvpx/vp8/decoder/arm/neon/dequant_idct_neon.asm => media/libvpx/vp8/common/arm/neon/dequant_idct_neon.asm rename : media/libvpx/vp8/decoder/arm/neon/dequantizeb_neon.asm => media/libvpx/vp8/common/arm/neon/dequantizeb_neon.asm rename : media/libvpx/vp8/decoder/arm/neon/idct_blk_neon.c => media/libvpx/vp8/common/arm/neon/idct_blk_neon.c rename : media/libvpx/vp8/decoder/arm/neon/idct_dequant_0_2x_neon.asm => media/libvpx/vp8/common/arm/neon/idct_dequant_0_2x_neon.asm rename : media/libvpx/vp8/decoder/arm/neon/idct_dequant_full_2x_neon.asm => media/libvpx/vp8/common/arm/neon/idct_dequant_full_2x_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/sad16_neon.asm => media/libvpx/vp8/common/arm/neon/sad16_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/sad8_neon.asm => media/libvpx/vp8/common/arm/neon/sad8_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/variance_neon.asm => media/libvpx/vp8/common/arm/neon/variance_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/vp8_mse16x16_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_mse16x16_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance16x16_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance16x16_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance16x16s_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance16x16s_neon.asm rename : media/libvpx/vp8/encoder/arm/neon/vp8_subpixelvariance8x8_neon.asm => media/libvpx/vp8/common/arm/neon/vp8_subpixelvariance8x8_neon.asm rename : media/libvpx/vp8/encoder/arm/variance_arm.c => media/libvpx/vp8/common/arm/variance_arm.c rename : media/libvpx/vp8/encoder/arm/variance_arm.h => media/libvpx/vp8/common/arm/variance_arm.h rename : media/libvpx/vp8/decoder/dequantize.c => media/libvpx/vp8/common/dequantize.c rename : media/libvpx/vp8/decoder/dequantize.h => media/libvpx/vp8/common/dequantize.h rename : media/libvpx/vp8/decoder/idct_blk.c => media/libvpx/vp8/common/idct_blk.c rename : media/libvpx/vp8/encoder/sad_c.c => media/libvpx/vp8/common/sad_c.c rename : media/libvpx/vp8/encoder/variance.h => media/libvpx/vp8/common/variance.h rename : media/libvpx/vp8/encoder/variance_c.c => media/libvpx/vp8/common/variance_c.c rename : media/libvpx/vp8/decoder/x86/dequantize_mmx.asm => media/libvpx/vp8/common/x86/dequantize_mmx.asm rename : media/libvpx/vp8/decoder/x86/dequantize_x86.h => media/libvpx/vp8/common/x86/dequantize_x86.h rename : media/libvpx/vp8/decoder/x86/idct_blk_mmx.c => media/libvpx/vp8/common/x86/idct_blk_mmx.c rename : media/libvpx/vp8/decoder/x86/idct_blk_sse2.c => media/libvpx/vp8/common/x86/idct_blk_sse2.c rename : media/libvpx/vp8/encoder/x86/sad_mmx.asm => media/libvpx/vp8/common/x86/sad_mmx.asm rename : media/libvpx/vp8/encoder/x86/sad_sse2.asm => media/libvpx/vp8/common/x86/sad_sse2.asm rename : media/libvpx/vp8/encoder/x86/sad_sse3.asm => media/libvpx/vp8/common/x86/sad_sse3.asm rename : media/libvpx/vp8/encoder/x86/sad_sse4.asm => media/libvpx/vp8/common/x86/sad_sse4.asm rename : media/libvpx/vp8/encoder/x86/sad_ssse3.asm => media/libvpx/vp8/common/x86/sad_ssse3.asm rename : media/libvpx/vp8/encoder/x86/variance_impl_mmx.asm => media/libvpx/vp8/common/x86/variance_impl_mmx.asm rename : media/libvpx/vp8/encoder/x86/variance_impl_sse2.asm => media/libvpx/vp8/common/x86/variance_impl_sse2.asm rename : media/libvpx/vp8/encoder/x86/variance_impl_ssse3.asm => media/libvpx/vp8/common/x86/variance_impl_ssse3.asm rename : media/libvpx/vp8/encoder/x86/variance_mmx.c => media/libvpx/vp8/common/x86/variance_mmx.c rename : media/libvpx/vp8/encoder/x86/variance_sse2.c => media/libvpx/vp8/common/x86/variance_sse2.c rename : media/libvpx/vp8/encoder/x86/variance_ssse3.c => media/libvpx/vp8/common/x86/variance_ssse3.c rename : media/libvpx/vp8/encoder/x86/variance_x86.h => media/libvpx/vp8/common/x86/variance_x86.h rename : media/libvpx/vp8/encoder/arm/armv6/vp8_fast_fdct4x4_armv6.asm => media/libvpx/vp8/encoder/arm/armv6/vp8_short_fdct4x4_armv6.asm rename : media/libvpx/vp8/common/defaultcoefcounts.c => media/libvpx/vp8/encoder/defaultcoefcounts.h
212 lines
5.4 KiB
C
212 lines
5.4 KiB
C
/*
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* Copyright (c) 2011 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 <stdlib.h>
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#include "vpx_config.h"
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#include "lookahead.h"
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#include "vp8/common/extend.h"
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#define MAX_LAG_BUFFERS (CONFIG_REALTIME_ONLY? 1 : 25)
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struct lookahead_ctx
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{
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unsigned int max_sz; /* Absolute size of the queue */
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unsigned int sz; /* Number of buffers currently in the queue */
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unsigned int read_idx; /* Read index */
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unsigned int write_idx; /* Write index */
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struct lookahead_entry *buf; /* Buffer list */
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};
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/* Return the buffer at the given absolute index and increment the index */
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static struct lookahead_entry *
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pop(struct lookahead_ctx *ctx,
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unsigned int *idx)
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{
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unsigned int index = *idx;
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struct lookahead_entry *buf = ctx->buf + index;
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assert(index < ctx->max_sz);
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if(++index >= ctx->max_sz)
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index -= ctx->max_sz;
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*idx = index;
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return buf;
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}
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void
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vp8_lookahead_destroy(struct lookahead_ctx *ctx)
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{
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if(ctx)
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{
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if(ctx->buf)
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{
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unsigned int i;
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for(i = 0; i < ctx->max_sz; i++)
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vp8_yv12_de_alloc_frame_buffer(&ctx->buf[i].img);
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free(ctx->buf);
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}
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free(ctx);
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}
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}
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struct lookahead_ctx*
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vp8_lookahead_init(unsigned int width,
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unsigned int height,
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unsigned int depth)
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{
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struct lookahead_ctx *ctx = NULL;
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unsigned int i;
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/* Clamp the lookahead queue depth */
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if(depth < 1)
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depth = 1;
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else if(depth > MAX_LAG_BUFFERS)
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depth = MAX_LAG_BUFFERS;
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/* Align the buffer dimensions */
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width = (width + 15) & ~15;
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height = (height + 15) & ~15;
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/* Allocate the lookahead structures */
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ctx = calloc(1, sizeof(*ctx));
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if(ctx)
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{
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ctx->max_sz = depth;
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ctx->buf = calloc(depth, sizeof(*ctx->buf));
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if(!ctx->buf)
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goto bail;
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for(i=0; i<depth; i++)
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if (vp8_yv12_alloc_frame_buffer(&ctx->buf[i].img,
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width, height, VP8BORDERINPIXELS))
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goto bail;
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}
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return ctx;
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bail:
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vp8_lookahead_destroy(ctx);
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return NULL;
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}
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int
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vp8_lookahead_push(struct lookahead_ctx *ctx,
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YV12_BUFFER_CONFIG *src,
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int64_t ts_start,
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int64_t ts_end,
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unsigned int flags,
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unsigned char *active_map)
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{
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struct lookahead_entry* buf;
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int row, col, active_end;
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int mb_rows = (src->y_height + 15) >> 4;
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int mb_cols = (src->y_width + 15) >> 4;
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if(ctx->sz + 1 > ctx->max_sz)
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return 1;
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ctx->sz++;
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buf = pop(ctx, &ctx->write_idx);
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// Only do this partial copy if the following conditions are all met:
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// 1. Lookahead queue has has size of 1.
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// 2. Active map is provided.
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// 3. This is not a key frame, golden nor altref frame.
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if (ctx->max_sz == 1 && active_map && !flags)
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{
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for (row = 0; row < mb_rows; ++row)
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{
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col = 0;
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while (1)
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{
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// Find the first active macroblock in this row.
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for (; col < mb_cols; ++col)
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{
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if (active_map[col])
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break;
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}
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// No more active macroblock in this row.
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if (col == mb_cols)
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break;
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// Find the end of active region in this row.
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active_end = col;
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for (; active_end < mb_cols; ++active_end)
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{
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if (!active_map[active_end])
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break;
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}
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// Only copy this active region.
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vp8_copy_and_extend_frame_with_rect(src, &buf->img,
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row << 4,
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col << 4, 16,
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(active_end - col) << 4);
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// Start again from the end of this active region.
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col = active_end;
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}
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active_map += mb_cols;
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}
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}
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else
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{
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vp8_copy_and_extend_frame(src, &buf->img);
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}
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buf->ts_start = ts_start;
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buf->ts_end = ts_end;
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buf->flags = flags;
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return 0;
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}
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struct lookahead_entry*
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vp8_lookahead_pop(struct lookahead_ctx *ctx,
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int drain)
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{
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struct lookahead_entry* buf = NULL;
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if(ctx->sz && (drain || ctx->sz == ctx->max_sz))
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{
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buf = pop(ctx, &ctx->read_idx);
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ctx->sz--;
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}
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return buf;
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}
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struct lookahead_entry*
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vp8_lookahead_peek(struct lookahead_ctx *ctx,
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unsigned int index)
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{
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struct lookahead_entry* buf = NULL;
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assert(index < ctx->max_sz);
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if(index < ctx->sz)
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{
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index += ctx->read_idx;
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if(index >= ctx->max_sz)
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index -= ctx->max_sz;
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buf = ctx->buf + index;
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}
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return buf;
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}
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unsigned int
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vp8_lookahead_depth(struct lookahead_ctx *ctx)
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{
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return ctx->sz;
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}
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