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MJPGSize function to query size.

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BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/898004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@425 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2012-10-17 04:37:39 +00:00
parent 02e48bf72b
commit 1c396a3d7d
4 changed files with 22 additions and 2 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: 424
Version: 425
License: BSD
License File: LICENSE

5
include/libyuv/convert.h
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@ -205,6 +205,11 @@ int MJPGToI420(const uint8* sample, size_t sample_size,
uint8* dst_v, int dst_stride_v,
int src_width, int src_height,
int dst_width, int dst_height);
// Query size of MJPG in pixels.
LIBYUV_API
int MJPGSize(const uint8* sample, size_t sample_size,
int* width, int* height);
#endif
// Note Bayer formats (BGGR) To I420 are in format_conversion.h

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 424
#define LIBYUV_VERSION 425
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT

15
source/convert.cc
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@ -1567,6 +1567,21 @@ static void JpegI400ToI420(void* opaque,
dest->h -= rows;
}
// Query size of MJPG in pixels.
LIBYUV_API
int MJPGSize(const uint8* sample, size_t sample_size,
int* width, int* height) {
// TODO(fbarchard): Port to C
MJpegDecoder mjpeg_decoder;
bool ret = mjpeg_decoder.LoadFrame(sample, sample_size);
if (ret) {
*width = mjpeg_decoder.GetWidth();
*height = mjpeg_decoder.GetHeight();
}
mjpeg_decoder.UnloadFrame();
return ret ? 0 : -1; // -1 for runtime failure.
}
// MJPG (Motion JPeg) to I420
// TODO(fbarchard): review w and h requirement. dw and dh may be enough.
LIBYUV_API