chromium/third_party/libyuv/source/convert_jpeg.cc

/*
 *  Copyright 2011 The LibYuv 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 "libyuv/convert.h"
#include "libyuv/convert_argb.h"

#ifdef HAVE_JPEG
#include "libyuv/mjpeg_decoder.h"
#endif

#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif

#ifdef HAVE_JPEG
struct I420Buffers { … };

static void JpegCopyI420(void* opaque,
                         const uint8_t* const* data,
                         const int* strides,
                         int rows) { … }

static void JpegI422ToI420(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI444ToI420(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI400ToI420(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

// Query size of MJPG in pixels.
LIBYUV_API
int MJPGSize(const uint8_t* src_mjpg,
             size_t src_size_mjpg,
             int* width,
             int* height) { … }

// MJPG (Motion JPeg) to I420
// TODO(fbarchard): review src_width and src_height requirement. dst_width and
// dst_height may be enough.
LIBYUV_API
int MJPGToI420(const uint8_t* src_mjpg,
               size_t src_size_mjpg,
               uint8_t* dst_y,
               int dst_stride_y,
               uint8_t* dst_u,
               int dst_stride_u,
               uint8_t* dst_v,
               int dst_stride_v,
               int src_width,
               int src_height,
               int dst_width,
               int dst_height) { … }

struct NV21Buffers { … };

static void JpegI420ToNV21(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI422ToNV21(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI444ToNV21(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI400ToNV21(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

// MJPG (Motion JPeg) to NV21
LIBYUV_API
int MJPGToNV21(const uint8_t* src_mjpg,
               size_t src_size_mjpg,
               uint8_t* dst_y,
               int dst_stride_y,
               uint8_t* dst_vu,
               int dst_stride_vu,
               int src_width,
               int src_height,
               int dst_width,
               int dst_height) { … }

static void JpegI420ToNV12(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI422ToNV12(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI444ToNV12(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI400ToNV12(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

// MJPG (Motion JPEG) to NV12.
LIBYUV_API
int MJPGToNV12(const uint8_t* sample,
               size_t sample_size,
               uint8_t* dst_y,
               int dst_stride_y,
               uint8_t* dst_uv,
               int dst_stride_uv,
               int src_width,
               int src_height,
               int dst_width,
               int dst_height) { … }

struct ARGBBuffers { … };

static void JpegI420ToARGB(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI422ToARGB(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI444ToARGB(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

static void JpegI400ToARGB(void* opaque,
                           const uint8_t* const* data,
                           const int* strides,
                           int rows) { … }

// MJPG (Motion JPeg) to ARGB
// TODO(fbarchard): review src_width and src_height requirement. dst_width and
// dst_height may be enough.
LIBYUV_API
int MJPGToARGB(const uint8_t* src_mjpg,
               size_t src_size_mjpg,
               uint8_t* dst_argb,
               int dst_stride_argb,
               int src_width,
               int src_height,
               int dst_width,
               int dst_height) { … }

#endif  // HAVE_JPEG

#ifdef __cplusplus
}  // extern "C"
}  // namespace libyuv
#endif