diff options
Diffstat (limited to 'source/convert_jpeg.cc')
| -rw-r--r-- | source/convert_jpeg.cc | 602 |
1 files changed, 0 insertions, 602 deletions
diff --git a/source/convert_jpeg.cc b/source/convert_jpeg.cc deleted file mode 100644 index d7556ee9..00000000 --- a/source/convert_jpeg.cc +++ /dev/null @@ -1,602 +0,0 @@ -/* - * 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 { - uint8_t* y; - int y_stride; - uint8_t* u; - int u_stride; - uint8_t* v; - int v_stride; - int w; - int h; -}; - -static void JpegCopyI420(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - I420Buffers* dest = (I420Buffers*)(opaque); - I420Copy(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->y, dest->y_stride, dest->u, dest->u_stride, dest->v, - dest->v_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->u += ((rows + 1) >> 1) * dest->u_stride; - dest->v += ((rows + 1) >> 1) * dest->v_stride; - dest->h -= rows; -} - -static void JpegI422ToI420(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - I420Buffers* dest = (I420Buffers*)(opaque); - I422ToI420(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->y, dest->y_stride, dest->u, dest->u_stride, dest->v, - dest->v_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->u += ((rows + 1) >> 1) * dest->u_stride; - dest->v += ((rows + 1) >> 1) * dest->v_stride; - dest->h -= rows; -} - -static void JpegI444ToI420(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - I420Buffers* dest = (I420Buffers*)(opaque); - I444ToI420(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->y, dest->y_stride, dest->u, dest->u_stride, dest->v, - dest->v_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->u += ((rows + 1) >> 1) * dest->u_stride; - dest->v += ((rows + 1) >> 1) * dest->v_stride; - dest->h -= rows; -} - -static void JpegI400ToI420(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - I420Buffers* dest = (I420Buffers*)(opaque); - I400ToI420(data[0], strides[0], dest->y, dest->y_stride, dest->u, - dest->u_stride, dest->v, dest->v_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->u += ((rows + 1) >> 1) * dest->u_stride; - dest->v += ((rows + 1) >> 1) * dest->v_stride; - dest->h -= 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) { - MJpegDecoder mjpeg_decoder; - LIBYUV_BOOL ret = mjpeg_decoder.LoadFrame(src_mjpg, src_size_mjpg); - 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 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) { - if (src_size_mjpg == kUnknownDataSize) { - // ERROR: MJPEG frame size unknown - return -1; - } - - // TODO(fbarchard): Port MJpeg to C. - MJpegDecoder mjpeg_decoder; - LIBYUV_BOOL ret = mjpeg_decoder.LoadFrame(src_mjpg, src_size_mjpg); - if (ret && (mjpeg_decoder.GetWidth() != src_width || - mjpeg_decoder.GetHeight() != src_height)) { - // ERROR: MJPEG frame has unexpected dimensions - mjpeg_decoder.UnloadFrame(); - return 1; // runtime failure - } - if (ret) { - I420Buffers bufs = {dst_y, dst_stride_y, dst_u, dst_stride_u, - dst_v, dst_stride_v, dst_width, dst_height}; - // YUV420 - if (mjpeg_decoder.GetColorSpace() == MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 2 && - mjpeg_decoder.GetHorizSampFactor(0) == 2 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegCopyI420, &bufs, dst_width, - dst_height); - // YUV422 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 2 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI422ToI420, &bufs, dst_width, - dst_height); - // YUV444 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 1 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI444ToI420, &bufs, dst_width, - dst_height); - // YUV400 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceGrayscale && - mjpeg_decoder.GetNumComponents() == 1 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI400ToI420, &bufs, dst_width, - dst_height); - } else { - // TODO(fbarchard): Implement conversion for any other - // colorspace/subsample factors that occur in practice. ERROR: Unable to - // convert MJPEG frame because format is not supported - mjpeg_decoder.UnloadFrame(); - return 1; - } - } - return ret ? 0 : 1; -} - -struct NV21Buffers { - uint8_t* y; - int y_stride; - uint8_t* vu; - int vu_stride; - int w; - int h; -}; - -static void JpegI420ToNV21(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - NV21Buffers* dest = (NV21Buffers*)(opaque); - I420ToNV21(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->y, dest->y_stride, dest->vu, dest->vu_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->vu += ((rows + 1) >> 1) * dest->vu_stride; - dest->h -= rows; -} - -static void JpegI422ToNV21(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - NV21Buffers* dest = (NV21Buffers*)(opaque); - I422ToNV21(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->y, dest->y_stride, dest->vu, dest->vu_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->vu += ((rows + 1) >> 1) * dest->vu_stride; - dest->h -= rows; -} - -static void JpegI444ToNV21(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - NV21Buffers* dest = (NV21Buffers*)(opaque); - I444ToNV21(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->y, dest->y_stride, dest->vu, dest->vu_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->vu += ((rows + 1) >> 1) * dest->vu_stride; - dest->h -= rows; -} - -static void JpegI400ToNV21(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - NV21Buffers* dest = (NV21Buffers*)(opaque); - I400ToNV21(data[0], strides[0], dest->y, dest->y_stride, dest->vu, - dest->vu_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->vu += ((rows + 1) >> 1) * dest->vu_stride; - dest->h -= 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) { - if (src_size_mjpg == kUnknownDataSize) { - // ERROR: MJPEG frame size unknown - return -1; - } - - // TODO(fbarchard): Port MJpeg to C. - MJpegDecoder mjpeg_decoder; - LIBYUV_BOOL ret = mjpeg_decoder.LoadFrame(src_mjpg, src_size_mjpg); - if (ret && (mjpeg_decoder.GetWidth() != src_width || - mjpeg_decoder.GetHeight() != src_height)) { - // ERROR: MJPEG frame has unexpected dimensions - mjpeg_decoder.UnloadFrame(); - return 1; // runtime failure - } - if (ret) { - NV21Buffers bufs = {dst_y, dst_stride_y, dst_vu, - dst_stride_vu, dst_width, dst_height}; - // YUV420 - if (mjpeg_decoder.GetColorSpace() == MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 2 && - mjpeg_decoder.GetHorizSampFactor(0) == 2 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI420ToNV21, &bufs, dst_width, - dst_height); - // YUV422 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 2 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI422ToNV21, &bufs, dst_width, - dst_height); - // YUV444 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 1 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI444ToNV21, &bufs, dst_width, - dst_height); - // YUV400 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceGrayscale && - mjpeg_decoder.GetNumComponents() == 1 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI400ToNV21, &bufs, dst_width, - dst_height); - } else { - // Unknown colorspace. - mjpeg_decoder.UnloadFrame(); - return 1; - } - } - return ret ? 0 : 1; -} - -static void JpegI420ToNV12(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - NV21Buffers* dest = (NV21Buffers*)(opaque); - // Use NV21 with VU swapped. - I420ToNV21(data[0], strides[0], data[2], strides[2], data[1], strides[1], - dest->y, dest->y_stride, dest->vu, dest->vu_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->vu += ((rows + 1) >> 1) * dest->vu_stride; - dest->h -= rows; -} - -static void JpegI422ToNV12(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - NV21Buffers* dest = (NV21Buffers*)(opaque); - // Use NV21 with VU swapped. - I422ToNV21(data[0], strides[0], data[2], strides[2], data[1], strides[1], - dest->y, dest->y_stride, dest->vu, dest->vu_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->vu += ((rows + 1) >> 1) * dest->vu_stride; - dest->h -= rows; -} - -static void JpegI444ToNV12(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - NV21Buffers* dest = (NV21Buffers*)(opaque); - // Use NV21 with VU swapped. - I444ToNV21(data[0], strides[0], data[2], strides[2], data[1], strides[1], - dest->y, dest->y_stride, dest->vu, dest->vu_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->vu += ((rows + 1) >> 1) * dest->vu_stride; - dest->h -= rows; -} - -static void JpegI400ToNV12(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - NV21Buffers* dest = (NV21Buffers*)(opaque); - // Use NV21 since there is no UV plane. - I400ToNV21(data[0], strides[0], dest->y, dest->y_stride, dest->vu, - dest->vu_stride, dest->w, rows); - dest->y += rows * dest->y_stride; - dest->vu += ((rows + 1) >> 1) * dest->vu_stride; - dest->h -= 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) { - if (sample_size == kUnknownDataSize) { - // ERROR: MJPEG frame size unknown - return -1; - } - - // TODO(fbarchard): Port MJpeg to C. - MJpegDecoder mjpeg_decoder; - LIBYUV_BOOL ret = mjpeg_decoder.LoadFrame(sample, sample_size); - if (ret && (mjpeg_decoder.GetWidth() != src_width || - mjpeg_decoder.GetHeight() != src_height)) { - // ERROR: MJPEG frame has unexpected dimensions - mjpeg_decoder.UnloadFrame(); - return 1; // runtime failure - } - if (ret) { - // Use NV21Buffers but with UV instead of VU. - NV21Buffers bufs = {dst_y, dst_stride_y, dst_uv, - dst_stride_uv, dst_width, dst_height}; - // YUV420 - if (mjpeg_decoder.GetColorSpace() == MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 2 && - mjpeg_decoder.GetHorizSampFactor(0) == 2 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI420ToNV12, &bufs, dst_width, - dst_height); - // YUV422 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 2 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI422ToNV12, &bufs, dst_width, - dst_height); - // YUV444 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 1 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI444ToNV12, &bufs, dst_width, - dst_height); - // YUV400 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceGrayscale && - mjpeg_decoder.GetNumComponents() == 1 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI400ToNV12, &bufs, dst_width, - dst_height); - } else { - // Unknown colorspace. - mjpeg_decoder.UnloadFrame(); - return 1; - } - } - return ret ? 0 : 1; -} - -struct ARGBBuffers { - uint8_t* argb; - int argb_stride; - int w; - int h; -}; - -static void JpegI420ToARGB(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - ARGBBuffers* dest = (ARGBBuffers*)(opaque); - I420ToARGB(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->argb, dest->argb_stride, dest->w, rows); - dest->argb += rows * dest->argb_stride; - dest->h -= rows; -} - -static void JpegI422ToARGB(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - ARGBBuffers* dest = (ARGBBuffers*)(opaque); - I422ToARGB(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->argb, dest->argb_stride, dest->w, rows); - dest->argb += rows * dest->argb_stride; - dest->h -= rows; -} - -static void JpegI444ToARGB(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - ARGBBuffers* dest = (ARGBBuffers*)(opaque); - I444ToARGB(data[0], strides[0], data[1], strides[1], data[2], strides[2], - dest->argb, dest->argb_stride, dest->w, rows); - dest->argb += rows * dest->argb_stride; - dest->h -= rows; -} - -static void JpegI400ToARGB(void* opaque, - const uint8_t* const* data, - const int* strides, - int rows) { - ARGBBuffers* dest = (ARGBBuffers*)(opaque); - I400ToARGB(data[0], strides[0], dest->argb, dest->argb_stride, dest->w, rows); - dest->argb += rows * dest->argb_stride; - dest->h -= 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) { - if (src_size_mjpg == kUnknownDataSize) { - // ERROR: MJPEG frame size unknown - return -1; - } - - // TODO(fbarchard): Port MJpeg to C. - MJpegDecoder mjpeg_decoder; - LIBYUV_BOOL ret = mjpeg_decoder.LoadFrame(src_mjpg, src_size_mjpg); - if (ret && (mjpeg_decoder.GetWidth() != src_width || - mjpeg_decoder.GetHeight() != src_height)) { - // ERROR: MJPEG frame has unexpected dimensions - mjpeg_decoder.UnloadFrame(); - return 1; // runtime failure - } - if (ret) { - ARGBBuffers bufs = {dst_argb, dst_stride_argb, dst_width, dst_height}; - // YUV420 - if (mjpeg_decoder.GetColorSpace() == MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 2 && - mjpeg_decoder.GetHorizSampFactor(0) == 2 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI420ToARGB, &bufs, dst_width, - dst_height); - // YUV422 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 2 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI422ToARGB, &bufs, dst_width, - dst_height); - // YUV444 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceYCbCr && - mjpeg_decoder.GetNumComponents() == 3 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 1 && - mjpeg_decoder.GetVertSampFactor(1) == 1 && - mjpeg_decoder.GetHorizSampFactor(1) == 1 && - mjpeg_decoder.GetVertSampFactor(2) == 1 && - mjpeg_decoder.GetHorizSampFactor(2) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI444ToARGB, &bufs, dst_width, - dst_height); - // YUV400 - } else if (mjpeg_decoder.GetColorSpace() == - MJpegDecoder::kColorSpaceGrayscale && - mjpeg_decoder.GetNumComponents() == 1 && - mjpeg_decoder.GetVertSampFactor(0) == 1 && - mjpeg_decoder.GetHorizSampFactor(0) == 1) { - ret = mjpeg_decoder.DecodeToCallback(&JpegI400ToARGB, &bufs, dst_width, - dst_height); - } else { - // TODO(fbarchard): Implement conversion for any other - // colorspace/subsample factors that occur in practice. ERROR: Unable to - // convert MJPEG frame because format is not supported - mjpeg_decoder.UnloadFrame(); - return 1; - } - } - return ret ? 0 : 1; -} - -#endif // HAVE_JPEG - -#ifdef __cplusplus -} // extern "C" -} // namespace libyuv -#endif |