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ConvertFromI420Stride is same as ConvertFromI420 but accepts a stride per row. Only works on single plane formats

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BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/353007

git-svn-id: http://libyuv.googlecode.com/svn/trunk@137 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2012-01-18 21:25:06 +00:00
parent ecb3f4cc4e
commit 782659b07c
3 changed files with 64 additions and 24 deletions
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2
README.chromium
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@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 136
Version: 137
License: BSD
License File: LICENSE

10
include/libyuv/convert.h
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@ -162,6 +162,16 @@ int ConvertFromI420(const uint8* y, int y_stride,
int width, int height,
uint32 format);
// Convert I420 to specified format with stride.
// stride applies to first plane. If zero, width is used to compute stride.
int ConvertFromI420Stride(const uint8* y, int y_stride,
const uint8* u, int u_stride,
const uint8* v, int v_stride,
uint8* dst_sample, size_t dst_sample_stride,
size_t dst_sample_size,
int width, int height,
uint32 format);
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv

76
source/convertfrom.cc
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@ -20,17 +20,15 @@ namespace libyuv {
extern "C" {
#endif
// Convert I420 to specified format.
// TODO(fbarchard): sample_size should be used to ensure the low levels do
// not read outside the buffer provided. It is measured in bytes and is the
// size of the frame. With MJPEG it is the compressed size of the frame.
// TODO(fbarchard): add I400, I444 and RAW support.
int ConvertFromI420(const uint8* y, int y_stride,
const uint8* u, int u_stride,
const uint8* v, int v_stride,
uint8* dst_sample, size_t dst_sample_size,
int width, int height,
uint32 format) {
// Convert I420 to specified format
int ConvertFromI420Stride(const uint8* y, int y_stride,
const uint8* u, int u_stride,
const uint8* v, int v_stride,
uint8* dst_sample, size_t dst_sample_stride,
size_t dst_sample_size,
int width, int height,
uint32 format) {
if (y == NULL || u == NULL || v == NULL || dst_sample == NULL) {
return -1;
}
@ -40,70 +38,80 @@ int ConvertFromI420(const uint8* y, int y_stride,
I420ToYUY2(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 2,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_UYVY:
I420ToUYVY(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 2,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_RGBP:
I420ToRGB565(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 2,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_RGBO:
I420ToARGB1555(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 2,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_R444:
I420ToARGB4444(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 2,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_24BG:
I420ToRGB24(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 3,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 3,
width, height);
break;
case FOURCC_RAW:
I420ToRAW(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 3,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 3,
width, height);
break;
case FOURCC_ARGB:
I420ToARGB(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 4,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 4,
width, height);
break;
case FOURCC_BGRA:
I420ToBGRA(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 4,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 4,
width, height);
break;
case FOURCC_ABGR:
I420ToABGR(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width * 4,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 4,
width, height);
break;
#ifdef HAVEI420TOBAYER
@ -114,16 +122,20 @@ int ConvertFromI420(const uint8* y, int y_stride,
I420ToBayerRGB(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width, format,
dst_sample,
dst_sample_stride ? dst_sample_stride : width,
format,
width, height);
break;
#endif
case FOURCC_I400:
I400Copy(y, y_stride,
dst_sample, width,
dst_sample,
dst_sample_stride ? dst_sample_stride : width,
width, height);
break;
// Triplanar formats
// TODO(fbarchard): halfstride instead of halfwidth
case FOURCC_I420:
case FOURCC_YV12: {
int halfwidth = (width + 1) / 2;
@ -195,6 +207,24 @@ int ConvertFromI420(const uint8* y, int y_stride,
return 0;
}
// Convert I420 to specified format.
// TODO(fbarchard): sample_size should be used to ensure the low levels do
// not read outside the buffer provided. It is measured in bytes and is the
// size of the frame. With MJPEG it is the compressed size of the frame.
// TODO(fbarchard): add I400, I444 and RAW support.
int ConvertFromI420(const uint8* y, int y_stride,
const uint8* u, int u_stride,
const uint8* v, int v_stride,
uint8* dst_sample, size_t dst_sample_size,
int width, int height,
uint32 format) {
return ConvertFromI420Stride(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, 0, dst_sample_size,
width, height, format);
}
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv