mirror of
https://chromium.googlesource.com/libyuv/libyuv
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b61497636a
BUG=none TEST=media_unittests Review URL: http://webrtc-codereview.appspot.com/266003 git-svn-id: http://libyuv.googlecode.com/svn/trunk@61 16f28f9a-4ce2-e073-06de-1de4eb20be90
1068 lines
36 KiB
C++
1068 lines
36 KiB
C++
/*
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* Copyright (c) 2011 The LibYuv 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 "libyuv/convert.h"
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#include "conversion_tables.h"
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#include "libyuv/basic_types.h"
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#include "libyuv/cpu_id.h"
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#include "libyuv/format_conversion.h"
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#include "libyuv/planar_functions.h"
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#include "libyuv/rotate.h"
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#include "row.h"
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#include "video_common.h"
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//#define SCALEOPT //Currently for windows only. June 2010
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#ifdef SCALEOPT
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#include <emmintrin.h>
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#endif
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namespace libyuv {
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static inline uint8 Clip(int32 val) {
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if (val < 0) {
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return (uint8) 0;
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} else if (val > 255){
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return (uint8) 255;
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}
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return (uint8) val;
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}
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int I420ToRGB24(const uint8* src_y, int src_stride_y,
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const uint8* src_u, int src_stride_u,
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const uint8* src_v, int src_stride_v,
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uint8* dst_frame, int dst_stride_frame,
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int width, int height) {
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if (src_y == NULL || src_u == NULL || src_v == NULL || dst_frame == NULL) {
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return -1;
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}
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// RGB orientation - bottom up
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// TODO(fbarchard): support inversion
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uint8* out = dst_frame + dst_stride_frame * height - dst_stride_frame;
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uint8* out2 = out - dst_stride_frame;
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int h, w;
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int tmp_r, tmp_g, tmp_b;
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const uint8 *y1, *y2 ,*u, *v;
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y1 = src_y;
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y2 = y1 + src_stride_y;
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u = src_u;
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v = src_v;
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for (h = ((height + 1) >> 1); h > 0; h--){
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// 2 rows at a time, 2 y's at a time
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for (w = 0; w < ((width + 1) >> 1); w++){
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// Vertical and horizontal sub-sampling
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tmp_r = (int32)((mapYc[y1[0]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y1[0]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y1[0]] + mapUcb[u[0]] + 128) >> 8);
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out[0] = Clip(tmp_b);
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out[1] = Clip(tmp_g);
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out[2] = Clip(tmp_r);
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tmp_r = (int32)((mapYc[y1[1]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y1[1]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y1[1]] + mapUcb[u[0]] + 128) >> 8);
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out[3] = Clip(tmp_b);
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out[4] = Clip(tmp_g);
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out[5] = Clip(tmp_r);
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tmp_r = (int32)((mapYc[y2[0]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y2[0]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y2[0]] + mapUcb[u[0]] + 128) >> 8);
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out2[0] = Clip(tmp_b);
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out2[1] = Clip(tmp_g);
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out2[2] = Clip(tmp_r);
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tmp_r = (int32)((mapYc[y2[1]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y2[1]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y2[1]] + mapUcb[u[0]] + 128) >> 8);
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out2[3] = Clip(tmp_b);
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out2[4] = Clip(tmp_g);
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out2[5] = Clip(tmp_r);
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out += 6;
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out2 += 6;
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y1 += 2;
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y2 += 2;
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u++;
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v++;
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}
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y1 += src_stride_y + src_stride_y - width;
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y2 += src_stride_y + src_stride_y - width;
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u += src_stride_u - ((width + 1) >> 1);
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v += src_stride_v - ((width + 1) >> 1);
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out -= dst_stride_frame * 3;
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out2 -= dst_stride_frame * 3;
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} // end height for
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return 0;
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}
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// Little Endian...
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int I420ToARGB4444(const uint8* src_y, int src_stride_y,
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const uint8* src_u, int src_stride_u,
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const uint8* src_v, int src_stride_v,
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uint8* dst_frame, int dst_stride_frame,
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int width, int height) {
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if (src_y == NULL || src_u == NULL || src_v == NULL || dst_frame == NULL) {
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return -1;
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}
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// RGB orientation - bottom up
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uint8* out = dst_frame + dst_stride_frame * (height - 1);
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uint8* out2 = out - dst_stride_frame;
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int tmp_r, tmp_g, tmp_b;
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const uint8 *y1,*y2, *u, *v;
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y1 = src_y;
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y2 = y1 + src_stride_y;
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u = src_u;
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v = src_v;
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int h, w;
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for (h = ((height + 1) >> 1); h > 0; h--) {
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// 2 rows at a time, 2 y's at a time
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for (w = 0; w < ((width + 1) >> 1); w++) {
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// Vertical and horizontal sub-sampling
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// Convert to RGB888 and re-scale to 4 bits
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tmp_r = (int32)((mapYc[y1[0]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y1[0]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y1[0]] + mapUcb[u[0]] + 128) >> 8);
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out[0] =(uint8)((Clip(tmp_g) & 0xf0) + (Clip(tmp_b) >> 4));
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out[1] = (uint8)(0xf0 + (Clip(tmp_r) >> 4));
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tmp_r = (int32)((mapYc[y1[1]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y1[1]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y1[1]] + mapUcb[u[0]] + 128) >> 8);
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out[2] = (uint8)((Clip(tmp_g) & 0xf0 ) + (Clip(tmp_b) >> 4));
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out[3] = (uint8)(0xf0 + (Clip(tmp_r) >> 4));
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tmp_r = (int32)((mapYc[y2[0]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y2[0]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y2[0]] + mapUcb[u[0]] + 128) >> 8);
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out2[0] = (uint8)((Clip(tmp_g) & 0xf0 ) + (Clip(tmp_b) >> 4));
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out2[1] = (uint8) (0xf0 + (Clip(tmp_r) >> 4));
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tmp_r = (int32)((mapYc[y2[1]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y2[1]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y2[1]] + mapUcb[u[0]] + 128) >> 8);
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out2[2] = (uint8)((Clip(tmp_g) & 0xf0 ) + (Clip(tmp_b) >> 4));
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out2[3] = (uint8)(0xf0 + (Clip(tmp_r) >> 4));
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out += 4;
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out2 += 4;
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y1 += 2;
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y2 += 2;
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u++;
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v++;
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}
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y1 += 2 * src_stride_y - width;
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y2 += 2 * src_stride_y - width;
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u += src_stride_u - ((width + 1) >> 1);
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v += src_stride_v - ((width + 1) >> 1);
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out -= (dst_stride_frame + width) * 2;
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out2 -= (dst_stride_frame + width) * 2;
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} // end height for
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return 0;
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}
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int I420ToRGB565(const uint8* src_y, int src_stride_y,
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const uint8* src_u, int src_stride_u,
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const uint8* src_v, int src_stride_v,
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uint8* dst_frame, int dst_stride_frame,
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int width, int height) {
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if (src_y == NULL || src_u == NULL || src_v == NULL || dst_frame == NULL) {
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return -1;
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}
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// Negative height means invert the image.
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if (height < 0) {
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height = -height;
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src_y = src_y + (height - 1) * src_stride_y;
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src_u = src_u + (height - 1) * src_stride_u;
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src_v = src_v + (height - 1) * src_stride_v;
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src_stride_y = -src_stride_y;
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src_stride_u = -src_stride_u;
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src_stride_v = -src_stride_v;
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}
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uint16* out = (uint16*)(dst_frame) + dst_stride_frame * (height - 1);
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uint16* out2 = out - dst_stride_frame;
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int tmp_r, tmp_g, tmp_b;
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const uint8* y1,* y2, * u, * v;
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y1 = src_y;
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y2 = y1 + src_stride_y;
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u = src_u;
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v = src_v;
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int h, w;
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for (h = ((height + 1) >> 1); h > 0; h--){
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// 2 rows at a time, 2 y's at a time
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for (w = 0; w < ((width + 1) >> 1); w++){
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// Vertical and horizontal sub-sampling
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// 1. Convert to RGB888
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// 2. Shift to adequate location (in the 16 bit word) - RGB 565
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tmp_r = (int32)((mapYc[y1[0]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y1[0]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y1[0]] + mapUcb[u[0]] + 128) >> 8);
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out[0] = (uint16)((Clip(tmp_r) & 0xf8) << 8) + ((Clip(tmp_g)
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& 0xfc) << 3) + (Clip(tmp_b) >> 3);
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tmp_r = (int32)((mapYc[y1[1]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y1[1]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y1[1]] + mapUcb[u[0]] + 128) >> 8);
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out[1] = (uint16)((Clip(tmp_r) & 0xf8) << 8) + ((Clip(tmp_g)
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& 0xfc) << 3) + (Clip(tmp_b ) >> 3);
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tmp_r = (int32)((mapYc[y2[0]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y2[0]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y2[0]] + mapUcb[u[0]] + 128) >> 8);
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out2[0] = (uint16)((Clip(tmp_r) & 0xf8) << 8) + ((Clip(tmp_g)
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& 0xfc) << 3) + (Clip(tmp_b) >> 3);
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tmp_r = (int32)((mapYc[y2[1]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y2[1]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y2[1]] + mapUcb[u[0]] + 128) >> 8);
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out2[1] = (uint16)((Clip(tmp_r) & 0xf8) << 8) + ((Clip(tmp_g)
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& 0xfc) << 3) + (Clip(tmp_b) >> 3);
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y1 += 2;
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y2 += 2;
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out += 2;
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out2 += 2;
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u++;
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v++;
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}
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y1 += 2 * src_stride_y - width;
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y2 += 2 * src_stride_y - width;
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u += src_stride_u - ((width + 1) >> 1);
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v += src_stride_v - ((width + 1) >> 1);
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out -= 2 * dst_stride_frame + width;
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out2 -= 2 * dst_stride_frame + width;
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}
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return 0;
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}
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int I420ToARGB1555(const uint8* src_y, int src_stride_y,
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const uint8* src_u, int src_stride_u,
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const uint8* src_v, int src_stride_v,
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uint8* dst_frame, int dst_stride_frame,
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int width, int height) {
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if (src_y == NULL || src_u == NULL || src_v == NULL || dst_frame == NULL) {
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return -1;
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}
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uint16* out = (uint16*)(dst_frame) + dst_stride_frame * (height - 1);
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uint16* out2 = out - dst_stride_frame ;
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int32 tmp_r, tmp_g, tmp_b;
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const uint8 *y1,*y2, *u, *v;
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int h, w;
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y1 = src_y;
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y2 = y1 + src_stride_y;
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u = src_u;
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v = src_v;
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for (h = ((height + 1) >> 1); h > 0; h--){
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// 2 rows at a time, 2 y's at a time
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for (w = 0; w < ((width + 1) >> 1); w++){
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// Vertical and horizontal sub-sampling
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// 1. Convert to RGB888
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// 2. Shift to adequate location (in the 16 bit word) - RGB 555
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// 3. Add 1 for alpha value
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tmp_r = (int32)((mapYc[y1[0]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y1[0]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y1[0]] + mapUcb[u[0]] + 128) >> 8);
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out[0] = (uint16)(0x8000 + ((Clip(tmp_r) & 0xf8) << 10) +
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((Clip(tmp_g) & 0xf8) << 3) + (Clip(tmp_b) >> 3));
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tmp_r = (int32)((mapYc[y1[1]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y1[1]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y1[1]] + mapUcb[u[0]] + 128) >> 8);
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out[1] = (uint16)(0x8000 + ((Clip(tmp_r) & 0xf8) << 10) +
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((Clip(tmp_g) & 0xf8) << 3) + (Clip(tmp_b) >> 3));
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tmp_r = (int32)((mapYc[y2[0]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y2[0]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y2[0]] + mapUcb[u[0]] + 128) >> 8);
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out2[0] = (uint16)(0x8000 + ((Clip(tmp_r) & 0xf8) << 10) +
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((Clip(tmp_g) & 0xf8) << 3) + (Clip(tmp_b) >> 3));
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tmp_r = (int32)((mapYc[y2[1]] + mapVcr[v[0]] + 128) >> 8);
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tmp_g = (int32)((mapYc[y2[1]] + mapUcg[u[0]] + mapVcg[v[0]] + 128) >> 8);
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tmp_b = (int32)((mapYc[y2[1]] + mapUcb[u[0]] + 128) >> 8);
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out2[1] = (uint16)(0x8000 + ((Clip(tmp_r) & 0xf8) << 10) +
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((Clip(tmp_g) & 0xf8) << 3) + (Clip(tmp_b) >> 3));
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y1 += 2;
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y2 += 2;
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out += 2;
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out2 += 2;
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u++;
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v++;
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}
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y1 += 2 * src_stride_y - width;
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y2 += 2 * src_stride_y - width;
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u += src_stride_u - ((width + 1) >> 1);
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v += src_stride_v - ((width + 1) >> 1);
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out -= 2 * dst_stride_frame + width;
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out2 -= 2 * dst_stride_frame + width;
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}
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return 0;
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}
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int I420ToYUY2(const uint8* src_y, int src_stride_y,
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const uint8* src_u, int src_stride_u,
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const uint8* src_v, int src_stride_v,
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uint8* dst_frame, int dst_stride_frame,
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int width, int height) {
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if (src_y == NULL || src_u == NULL || src_v == NULL || dst_frame == NULL) {
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return -1;
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}
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const uint8* in1 = src_y;
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const uint8* in2 = src_y + src_stride_y;
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uint8* out1 = dst_frame;
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uint8* out2 = dst_frame + dst_stride_frame;
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// YUY2 - Macro-pixel = 2 image pixels
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// Y0U0Y1V0....Y2U2Y3V2...Y4U4Y5V4....
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#ifndef SCALEOPT
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for (int i = 0; i < ((height + 1) >> 1); i++){
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for (int j = 0; j < ((width + 1) >> 1); j++){
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out1[0] = in1[0];
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out1[1] = *src_u;
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out1[2] = in1[1];
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out1[3] = *src_v;
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out2[0] = in2[0];
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out2[1] = *src_u;
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out2[2] = in2[1];
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out2[3] = *src_v;
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out1 += 4;
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out2 += 4;
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src_u++;
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src_v++;
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in1 += 2;
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in2 += 2;
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}
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in1 += 2 * src_stride_y - width;
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in2 += 2 * src_stride_y - width;
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src_u += src_stride_u - ((width + 1) >> 1);
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src_v += src_stride_v - ((width + 1) >> 1);
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out1 += dst_stride_frame + dst_stride_frame - 2 * width;
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out2 += dst_stride_frame + dst_stride_frame - 2 * width;
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}
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#else
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for (WebRtc_UWord32 i = 0; i < ((height + 1) >> 1);i++) {
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int32 width__ = (width >> 4);
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_asm
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{
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;pusha
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mov eax, DWORD PTR [in1] ;1939.33
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mov ecx, DWORD PTR [in2] ;1939.33
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mov ebx, DWORD PTR [src_u] ;1939.33
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|
mov edx, DWORD PTR [src_v] ;1939.33
|
|
loop0:
|
|
movq xmm6, QWORD PTR [ebx] ;src_u
|
|
movq xmm0, QWORD PTR [edx] ;src_v
|
|
punpcklbw xmm6, xmm0 ;src_u, src_v mix
|
|
;movdqa xmm1, xmm6
|
|
;movdqa xmm2, xmm6
|
|
;movdqa xmm4, xmm6
|
|
|
|
movdqu xmm3, XMMWORD PTR [eax] ;in1
|
|
movdqa xmm1, xmm3
|
|
punpcklbw xmm1, xmm6 ;in1, src_u, in1, src_v
|
|
mov esi, DWORD PTR [out1]
|
|
movdqu XMMWORD PTR [esi], xmm1 ;write to out1
|
|
|
|
movdqu xmm5, XMMWORD PTR [ecx] ;in2
|
|
movdqa xmm2, xmm5
|
|
punpcklbw xmm2, xmm6 ;in2, src_u, in2, src_v
|
|
mov edi, DWORD PTR [out2]
|
|
movdqu XMMWORD PTR [edi], xmm2 ;write to out2
|
|
|
|
punpckhbw xmm3, xmm6 ;in1, src_u, in1, src_v again
|
|
movdqu XMMWORD PTR [esi+16], xmm3 ;write to out1 again
|
|
add esi, 32
|
|
mov DWORD PTR [out1], esi
|
|
|
|
punpckhbw xmm5, xmm6 ;src_u, in2, src_v again
|
|
movdqu XMMWORD PTR [edi+16], xmm5 ;write to out2 again
|
|
add edi, 32
|
|
mov DWORD PTR [out2], edi
|
|
|
|
add ebx, 8
|
|
add edx, 8
|
|
add eax, 16
|
|
add ecx, 16
|
|
|
|
mov esi, DWORD PTR [width__]
|
|
sub esi, 1
|
|
mov DWORD PTR [width__], esi
|
|
jg loop0
|
|
|
|
mov DWORD PTR [in1], eax ;1939.33
|
|
mov DWORD PTR [in2], ecx ;1939.33
|
|
mov DWORD PTR [src_u], ebx ;1939.33
|
|
mov DWORD PTR [src_v], edx ;1939.33
|
|
|
|
;popa
|
|
emms
|
|
}
|
|
in1 += 2 * src_stride_y - width;
|
|
in2 += 2 * src_stride_y - width;
|
|
out1 += dst_stride_frame + dst_stride_frame - 2 * width;
|
|
out2 += dst_stride_frame + dst_stride_frame - 2 * width;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
int I420ToUYVY(const uint8* src_y, int src_stride_y,
|
|
const uint8* src_u, int src_stride_u,
|
|
const uint8* src_v, int src_stride_v,
|
|
uint8* dst_frame, int dst_stride_frame,
|
|
int width, int height) {
|
|
if (src_y == NULL || src_u == NULL || src_v == NULL || dst_frame == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
int i = 0;
|
|
const uint8* y1 = src_y;
|
|
const uint8* y2 = y1 + src_stride_y;
|
|
const uint8* u = src_u;
|
|
const uint8* v = src_v;
|
|
|
|
uint8* out1 = dst_frame;
|
|
uint8* out2 = dst_frame + dst_stride_frame;
|
|
|
|
// Macro-pixel = 2 image pixels
|
|
// U0Y0V0Y1....U2Y2V2Y3...U4Y4V4Y5.....
|
|
|
|
#ifndef SCALEOPT
|
|
for (; i < ((height + 1) >> 1); i++) {
|
|
for (int j = 0; j < ((width + 1) >> 1); j++) {
|
|
out1[0] = *u;
|
|
out1[1] = y1[0];
|
|
out1[2] = *v;
|
|
out1[3] = y1[1];
|
|
|
|
out2[0] = *u;
|
|
out2[1] = y2[0];
|
|
out2[2] = *v;
|
|
out2[3] = y2[1];
|
|
out1 += 4;
|
|
out2 += 4;
|
|
u++;
|
|
v++;
|
|
y1 += 2;
|
|
y2 += 2;
|
|
}
|
|
y1 += 2 * src_stride_y - width;
|
|
y2 += 2 * src_stride_y - width;
|
|
u += src_stride_u - ((width + 1) >> 1);
|
|
v += src_stride_v - ((width + 1) >> 1);
|
|
out1 += 2 * (dst_stride_frame - width);
|
|
out2 += 2 * (dst_stride_frame - width);
|
|
}
|
|
#else
|
|
for (; i < (height >> 1);i++) {
|
|
int32 width__ = (width >> 4);
|
|
_asm
|
|
{
|
|
;pusha
|
|
mov eax, DWORD PTR [in1] ;1939.33
|
|
mov ecx, DWORD PTR [in2] ;1939.33
|
|
mov ebx, DWORD PTR [src_u] ;1939.33
|
|
mov edx, DWORD PTR [src_v] ;1939.33
|
|
loop0:
|
|
movq xmm6, QWORD PTR [ebx] ;src_u
|
|
movq xmm0, QWORD PTR [edx] ;src_v
|
|
punpcklbw xmm6, xmm0 ;src_u, src_v mix
|
|
movdqa xmm1, xmm6
|
|
movdqa xmm2, xmm6
|
|
movdqa xmm4, xmm6
|
|
|
|
movdqu xmm3, XMMWORD PTR [eax] ;in1
|
|
punpcklbw xmm1, xmm3 ;src_u, in1, src_v
|
|
mov esi, DWORD PTR [out1]
|
|
movdqu XMMWORD PTR [esi], xmm1 ;write to out1
|
|
|
|
movdqu xmm5, XMMWORD PTR [ecx] ;in2
|
|
punpcklbw xmm2, xmm5 ;src_u, in2, src_v
|
|
mov edi, DWORD PTR [out2]
|
|
movdqu XMMWORD PTR [edi], xmm2 ;write to out2
|
|
|
|
punpckhbw xmm4, xmm3 ;src_u, in1, src_v again
|
|
movdqu XMMWORD PTR [esi+16], xmm4 ;write to out1 again
|
|
add esi, 32
|
|
mov DWORD PTR [out1], esi
|
|
|
|
punpckhbw xmm6, xmm5 ;src_u, in2, src_v again
|
|
movdqu XMMWORD PTR [edi+16], xmm6 ;write to out2 again
|
|
add edi, 32
|
|
mov DWORD PTR [out2], edi
|
|
|
|
add ebx, 8
|
|
add edx, 8
|
|
add eax, 16
|
|
add ecx, 16
|
|
|
|
mov esi, DWORD PTR [width__]
|
|
sub esi, 1
|
|
mov DWORD PTR [width__], esi
|
|
jg loop0
|
|
|
|
mov DWORD PTR [in1], eax ;1939.33
|
|
mov DWORD PTR [in2], ecx ;1939.33
|
|
mov DWORD PTR [src_u], ebx ;1939.33
|
|
mov DWORD PTR [src_v], edx ;1939.33
|
|
|
|
;popa
|
|
emms
|
|
}
|
|
in1 += width;
|
|
in2 += width;
|
|
out1 += 2 * (dst_stride_frame - width);
|
|
out2 += 2 * (dst_stride_frame - width);
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
int NV12ToRGB565(const uint8* src_y, int src_stride_y,
|
|
const uint8* src_uv, int src_stride_uv,
|
|
uint8* dst_frame, int dst_stride_frame,
|
|
int width, int height) {
|
|
if (src_y == NULL || src_uv == NULL || dst_frame == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
// Bi-Planar: Y plane followed by an interlaced U and V plane
|
|
const uint8* interlacedSrc = src_uv;
|
|
uint16* out = (uint16*)(src_y) + dst_stride_frame * (height - 1);
|
|
uint16* out2 = out - dst_stride_frame;
|
|
int32 tmp_r, tmp_g, tmp_b;
|
|
const uint8 *y1,*y2;
|
|
y1 = src_y;
|
|
y2 = y1 + src_stride_y;
|
|
int h, w;
|
|
|
|
for (h = ((height + 1) >> 1); h > 0; h--) {
|
|
// 2 rows at a time, 2 y's at a time
|
|
for (w = 0; w < ((width + 1) >> 1); w++) {
|
|
// Vertical and horizontal sub-sampling
|
|
// 1. Convert to RGB888
|
|
// 2. Shift to adequate location (in the 16 bit word) - RGB 565
|
|
|
|
tmp_r = (int32)((mapYc[y1[0]] + mapVcr[interlacedSrc[1]] + 128) >> 8);
|
|
tmp_g = (int32)((mapYc[y1[0]] + mapUcg[interlacedSrc[0]]
|
|
+ mapVcg[interlacedSrc[1]] + 128) >> 8);
|
|
tmp_b = (int32)((mapYc[y1[0]] + mapUcb[interlacedSrc[0]] + 128) >> 8);
|
|
out[0] = (uint16)((Clip(tmp_r) & 0xf8) << 8) + ((Clip(tmp_g)
|
|
& 0xfc) << 3) + (Clip(tmp_b) >> 3);
|
|
|
|
tmp_r = (int32)((mapYc[y1[1]] + mapVcr[interlacedSrc[1]] + 128) >> 8);
|
|
tmp_g = (int32)((mapYc[y1[1]] + mapUcg[interlacedSrc[0]]
|
|
+ mapVcg[interlacedSrc[1]] + 128) >> 8);
|
|
tmp_b = (int32)((mapYc[y1[1]] + mapUcb[interlacedSrc[0]] + 128) >> 8);
|
|
out[1] = (uint16)((Clip(tmp_r) & 0xf8) << 8) + ((Clip(tmp_g)
|
|
& 0xfc) << 3) + (Clip(tmp_b ) >> 3);
|
|
|
|
tmp_r = (int32)((mapYc[y2[0]] + mapVcr[interlacedSrc[1]] + 128) >> 8);
|
|
tmp_g = (int32)((mapYc[y2[0]] + mapUcg[interlacedSrc[0]]
|
|
+ mapVcg[interlacedSrc[1]] + 128) >> 8);
|
|
tmp_b = (int32)((mapYc[y2[0]] + mapUcb[interlacedSrc[0]] + 128) >> 8);
|
|
out2[0] = (uint16)((Clip(tmp_r) & 0xf8) << 8) + ((Clip(tmp_g)
|
|
& 0xfc) << 3) + (Clip(tmp_b) >> 3);
|
|
|
|
tmp_r = (int32)((mapYc[y2[1]] + mapVcr[interlacedSrc[1]]
|
|
+ 128) >> 8);
|
|
tmp_g = (int32)((mapYc[y2[1]] + mapUcg[interlacedSrc[0]]
|
|
+ mapVcg[interlacedSrc[1]] + 128) >> 8);
|
|
tmp_b = (int32)((mapYc[y2[1]] + mapUcb[interlacedSrc[0]] + 128) >> 8);
|
|
out2[1] = (uint16)((Clip(tmp_r) & 0xf8) << 8) + ((Clip(tmp_g)
|
|
& 0xfc) << 3) + (Clip(tmp_b) >> 3);
|
|
|
|
y1 += 2;
|
|
y2 += 2;
|
|
out += 2;
|
|
out2 += 2;
|
|
interlacedSrc += 2;
|
|
}
|
|
y1 += 2 * src_stride_y - width;
|
|
y2 += 2 * src_stride_y - width;
|
|
interlacedSrc += src_stride_uv - ((width + 1) >> 1);
|
|
out -= 3 * dst_stride_frame + dst_stride_frame - width;
|
|
out2 -= 3 * dst_stride_frame + dst_stride_frame - width;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// TODO(fbarchard): Deprecated - this is same as BG24ToARGB with -height
|
|
int RGB24ToARGB(const uint8* src_frame, int src_stride_frame,
|
|
uint8* dst_frame, int dst_stride_frame,
|
|
int width, int height) {
|
|
if (src_frame == NULL || dst_frame == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
int i, j, offset;
|
|
uint8* outFrame = dst_frame;
|
|
const uint8* inFrame = src_frame;
|
|
|
|
outFrame += dst_stride_frame * (height - 1) * 4;
|
|
for (i = 0; i < height; i++) {
|
|
for (j = 0; j < width; j++) {
|
|
offset = j * 4;
|
|
outFrame[0 + offset] = inFrame[0];
|
|
outFrame[1 + offset] = inFrame[1];
|
|
outFrame[2 + offset] = inFrame[2];
|
|
outFrame[3 + offset] = 0xff;
|
|
inFrame += 3;
|
|
}
|
|
outFrame -= 4 * (dst_stride_frame - width);
|
|
inFrame += src_stride_frame - width;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ARGBToI420(const uint8* src_frame, int src_stride_frame,
|
|
uint8* dst_y, int dst_stride_y,
|
|
uint8* dst_u, int dst_stride_u,
|
|
uint8* dst_v, int dst_stride_v,
|
|
int width, int height) {
|
|
if (height < 0) {
|
|
height = -height;
|
|
src_frame = src_frame + (height - 1) * src_stride_frame;
|
|
src_stride_frame = -src_stride_frame;
|
|
}
|
|
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix);
|
|
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
|
|
uint8* dst_u, uint8* dst_v, int width);
|
|
#if defined(HAS_ARGBTOYROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_y, 16) && (dst_stride_y % 16 == 0)) {
|
|
ARGBToYRow = ARGBToYRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToYRow = ARGBToYRow_C;
|
|
}
|
|
#if defined(HAS_ARGBTOUVROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_u, 8) && (dst_stride_u % 8 == 0) &&
|
|
IS_ALIGNED(dst_v, 8) && (dst_stride_v % 8 == 0)) {
|
|
ARGBToUVRow = ARGBToUVRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToUVRow = ARGBToUVRow_C;
|
|
}
|
|
|
|
for (int y = 0; y < (height - 1); y += 2) {
|
|
ARGBToUVRow(src_frame, src_stride_frame, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
ARGBToYRow(src_frame + src_stride_frame, dst_y + dst_stride_y, width);
|
|
src_frame += src_stride_frame * 2;
|
|
dst_y += dst_stride_y * 2;
|
|
dst_u += dst_stride_u;
|
|
dst_v += dst_stride_v;
|
|
}
|
|
if (height & 1) {
|
|
ARGBToUVRow(src_frame, 0, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int BGRAToI420(const uint8* src_frame, int src_stride_frame,
|
|
uint8* dst_y, int dst_stride_y,
|
|
uint8* dst_u, int dst_stride_u,
|
|
uint8* dst_v, int dst_stride_v,
|
|
int width, int height) {
|
|
if (height < 0) {
|
|
height = -height;
|
|
src_frame = src_frame + (height - 1) * src_stride_frame;
|
|
src_stride_frame = -src_stride_frame;
|
|
}
|
|
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix);
|
|
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
|
|
uint8* dst_u, uint8* dst_v, int width);
|
|
#if defined(HAS_BGRATOYROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_y, 16) && (dst_stride_y % 16 == 0)) {
|
|
ARGBToYRow = BGRAToYRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToYRow = BGRAToYRow_C;
|
|
}
|
|
#if defined(HAS_BGRATOUVROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_u, 8) && (dst_stride_u % 8 == 0) &&
|
|
IS_ALIGNED(dst_v, 8) && (dst_stride_v % 8 == 0)) {
|
|
ARGBToUVRow = BGRAToUVRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToUVRow = BGRAToUVRow_C;
|
|
}
|
|
|
|
for (int y = 0; y < (height - 1); y += 2) {
|
|
ARGBToUVRow(src_frame, src_stride_frame, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
ARGBToYRow(src_frame + src_stride_frame, dst_y + dst_stride_y, width);
|
|
src_frame += src_stride_frame * 2;
|
|
dst_y += dst_stride_y * 2;
|
|
dst_u += dst_stride_u;
|
|
dst_v += dst_stride_v;
|
|
}
|
|
if (height & 1) {
|
|
ARGBToUVRow(src_frame, 0, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ABGRToI420(const uint8* src_frame, int src_stride_frame,
|
|
uint8* dst_y, int dst_stride_y,
|
|
uint8* dst_u, int dst_stride_u,
|
|
uint8* dst_v, int dst_stride_v,
|
|
int width, int height) {
|
|
if (height < 0) {
|
|
height = -height;
|
|
src_frame = src_frame + (height - 1) * src_stride_frame;
|
|
src_stride_frame = -src_stride_frame;
|
|
}
|
|
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix);
|
|
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
|
|
uint8* dst_u, uint8* dst_v, int width);
|
|
#if defined(HAS_ABGRTOYROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_y, 16) && (dst_stride_y % 16 == 0)) {
|
|
ARGBToYRow = ABGRToYRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToYRow = ABGRToYRow_C;
|
|
}
|
|
#if defined(HAS_ABGRTOUVROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_u, 8) && (dst_stride_u % 8 == 0) &&
|
|
IS_ALIGNED(dst_v, 8) && (dst_stride_v % 8 == 0)) {
|
|
ARGBToUVRow = ABGRToUVRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToUVRow = ABGRToUVRow_C;
|
|
}
|
|
|
|
for (int y = 0; y < (height - 1); y += 2) {
|
|
ARGBToUVRow(src_frame, src_stride_frame, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
ARGBToYRow(src_frame + src_stride_frame, dst_y + dst_stride_y, width);
|
|
src_frame += src_stride_frame * 2;
|
|
dst_y += dst_stride_y * 2;
|
|
dst_u += dst_stride_u;
|
|
dst_v += dst_stride_v;
|
|
}
|
|
if (height & 1) {
|
|
ARGBToUVRow(src_frame, 0, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int RGB24ToI420(const uint8* src_frame, int src_stride_frame,
|
|
uint8* dst_y, int dst_stride_y,
|
|
uint8* dst_u, int dst_stride_u,
|
|
uint8* dst_v, int dst_stride_v,
|
|
int width, int height) {
|
|
if (height < 0) {
|
|
height = -height;
|
|
src_frame = src_frame + (height - 1) * src_stride_frame;
|
|
src_stride_frame = -src_stride_frame;
|
|
}
|
|
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix);
|
|
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
|
|
uint8* dst_u, uint8* dst_v, int width);
|
|
#if defined(HAS_RGB24TOYROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_y, 16) && (dst_stride_y % 16 == 0)) {
|
|
ARGBToYRow = RGB24ToYRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToYRow = RGB24ToYRow_C;
|
|
}
|
|
#if defined(HAS_RGB24TOUVROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_u, 8) && (dst_stride_u % 8 == 0) &&
|
|
IS_ALIGNED(dst_v, 8) && (dst_stride_v % 8 == 0)) {
|
|
ARGBToUVRow = RGB24ToUVRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToUVRow = RGB24ToUVRow_C;
|
|
}
|
|
|
|
for (int y = 0; y < (height - 1); y += 2) {
|
|
ARGBToUVRow(src_frame, src_stride_frame, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
ARGBToYRow(src_frame + src_stride_frame, dst_y + dst_stride_y, width);
|
|
src_frame += src_stride_frame * 2;
|
|
dst_y += dst_stride_y * 2;
|
|
dst_u += dst_stride_u;
|
|
dst_v += dst_stride_v;
|
|
}
|
|
if (height & 1) {
|
|
ARGBToUVRow(src_frame, 0, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int RAWToI420(const uint8* src_frame, int src_stride_frame,
|
|
uint8* dst_y, int dst_stride_y,
|
|
uint8* dst_u, int dst_stride_u,
|
|
uint8* dst_v, int dst_stride_v,
|
|
int width, int height) {
|
|
if (height < 0) {
|
|
height = -height;
|
|
src_frame = src_frame + (height - 1) * src_stride_frame;
|
|
src_stride_frame = -src_stride_frame;
|
|
}
|
|
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix);
|
|
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
|
|
uint8* dst_u, uint8* dst_v, int width);
|
|
#if defined(HAS_RAWTOYROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_y, 16) && (dst_stride_y % 16 == 0)) {
|
|
ARGBToYRow = RAWToYRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToYRow = RAWToYRow_C;
|
|
}
|
|
#if defined(HAS_RAWTOUVROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src_frame, 16) && (src_stride_frame % 16 == 0) &&
|
|
IS_ALIGNED(dst_u, 8) && (dst_stride_u % 8 == 0) &&
|
|
IS_ALIGNED(dst_v, 8) && (dst_stride_v % 8 == 0)) {
|
|
ARGBToUVRow = RAWToUVRow_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ARGBToUVRow = RAWToUVRow_C;
|
|
}
|
|
|
|
for (int y = 0; y < (height - 1); y += 2) {
|
|
ARGBToUVRow(src_frame, src_stride_frame, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
ARGBToYRow(src_frame + src_stride_frame, dst_y + dst_stride_y, width);
|
|
src_frame += src_stride_frame * 2;
|
|
dst_y += dst_stride_y * 2;
|
|
dst_u += dst_stride_u;
|
|
dst_v += dst_stride_v;
|
|
}
|
|
if (height & 1) {
|
|
ARGBToUVRow(src_frame, 0, dst_u, dst_v, width);
|
|
ARGBToYRow(src_frame, dst_y, width);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Convert camera sample to I420 with cropping, rotation and vertical flip.
|
|
int ConvertToI420(const uint8* sample, size_t sample_size,
|
|
uint8* y, int y_stride,
|
|
uint8* u, int u_stride,
|
|
uint8* v, int v_stride,
|
|
int horiz_crop, int vert_crop,
|
|
int w, int h,
|
|
int dw, int idh,
|
|
RotationMode rotation,
|
|
uint32 format) {
|
|
int aw = (w + 1) & ~1;
|
|
const uint8* src;
|
|
const uint8* src_uv;
|
|
int abs_h = (h < 0) ? -h : h;
|
|
switch (format) {
|
|
// Single plane formats
|
|
case FOURCC_YUY2:
|
|
src = sample + (aw * vert_crop + horiz_crop) * 2 ;
|
|
YUY2ToI420(src, aw * 2,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
case FOURCC_UYVY:
|
|
src = sample + (aw * vert_crop + horiz_crop) * 2;
|
|
UYVYToI420(src, aw * 2,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
case FOURCC_24BG:
|
|
src = sample + (w * vert_crop + horiz_crop) * 3;
|
|
RGB24ToI420(src, w * 3,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
case FOURCC_RAW:
|
|
src = sample + (w * vert_crop + horiz_crop) * 3;
|
|
RAWToI420(src, w * 3,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
case FOURCC_ARGB:
|
|
src = sample + (w * vert_crop + horiz_crop) * 4;
|
|
ARGBToI420(src, w * 4,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
case FOURCC_BGRA:
|
|
src = sample + (w * vert_crop + horiz_crop) * 4;
|
|
BGRAToI420(src, w * 4,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
case FOURCC_ABGR:
|
|
src = sample + (w * vert_crop + horiz_crop) * 4;
|
|
ABGRToI420(src, w * 4,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
case FOURCC_BGGR:
|
|
case FOURCC_RGGB:
|
|
case FOURCC_GRBG:
|
|
case FOURCC_GBRG:
|
|
// TODO(fbarchard): We could support cropping by odd numbers by
|
|
// adjusting fourcc.
|
|
src = sample + (w * vert_crop + horiz_crop);
|
|
BayerRGBToI420(src, w, format,
|
|
y, y_stride, u, u_stride, v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
// Biplanar formats
|
|
case FOURCC_M420:
|
|
src = sample + (w * vert_crop) * 12 / 8 + horiz_crop;
|
|
M420ToI420(src, w,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
case FOURCC_NV12:
|
|
src = sample + (w * vert_crop + horiz_crop);
|
|
src_uv = sample + aw * (h + vert_crop / 2) + horiz_crop;
|
|
NV12ToI420Rotate(src, w,
|
|
src_uv, aw,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh, rotation);
|
|
break;
|
|
case FOURCC_NV21:
|
|
src = sample + (w * vert_crop + horiz_crop);
|
|
src_uv = sample + aw * (h + vert_crop / 2) + horiz_crop;
|
|
// Call NV12 but with u and v parameters swapped.
|
|
NV12ToI420Rotate(src, w,
|
|
src_uv, aw,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh, rotation);
|
|
break;
|
|
case FOURCC_Q420:
|
|
src = sample + (w + aw * 2) * vert_crop + horiz_crop;
|
|
src_uv = sample + (w + aw * 2) * vert_crop + w + horiz_crop * 2;
|
|
Q420ToI420(src, w * 3,
|
|
src_uv, w * 3,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh);
|
|
break;
|
|
// Triplanar formats
|
|
case FOURCC_I420:
|
|
case FOURCC_YV12: {
|
|
const uint8* src_y = sample + (w * vert_crop + horiz_crop);
|
|
const uint8* src_u;
|
|
const uint8* src_v;
|
|
int halfwidth = (w + 1) / 2;
|
|
int halfheight = (abs_h + 1) / 2;
|
|
if (format == FOURCC_I420) {
|
|
src_u = sample + w * abs_h +
|
|
(halfwidth * vert_crop + horiz_crop) / 2;
|
|
src_v = sample + w * abs_h +
|
|
halfwidth * (halfheight + vert_crop / 2) + horiz_crop / 2;
|
|
} else {
|
|
src_v = sample + w * abs_h +
|
|
(halfwidth * vert_crop + horiz_crop) / 2;
|
|
src_u = sample + w * abs_h +
|
|
halfwidth * (halfheight + vert_crop / 2) + horiz_crop / 2;
|
|
}
|
|
I420Rotate(src_y, w,
|
|
src_u, halfwidth,
|
|
src_v, halfwidth,
|
|
y, y_stride,
|
|
u, u_stride,
|
|
v, v_stride,
|
|
dw, idh, rotation);
|
|
break;
|
|
}
|
|
// Formats not supported
|
|
case FOURCC_MJPG:
|
|
default:
|
|
return -1; // unknown fourcc - return failure code.
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
} // namespace libyuv
|