319 lines
12 KiB
C++
319 lines
12 KiB
C++
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/*
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* Copyright 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 "libyuv/convert_argb.h"
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#ifdef HAVE_JPEG
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#include "libyuv/mjpeg_decoder.h"
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#endif
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#ifdef __cplusplus
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namespace libyuv {
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extern "C" {
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#endif
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#ifdef HAVE_JPEG
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struct I420Buffers {
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uint8* y;
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int y_stride;
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uint8* u;
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int u_stride;
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uint8* v;
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int v_stride;
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int w;
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int h;
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};
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static void JpegCopyI420(void* opaque,
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const uint8* const* data,
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const int* strides,
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int rows) {
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I420Buffers* dest = (I420Buffers*)(opaque);
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I420Copy(data[0], strides[0], data[1], strides[1], data[2], strides[2],
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dest->y, dest->y_stride, dest->u, dest->u_stride, dest->v,
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dest->v_stride, dest->w, rows);
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dest->y += rows * dest->y_stride;
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dest->u += ((rows + 1) >> 1) * dest->u_stride;
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dest->v += ((rows + 1) >> 1) * dest->v_stride;
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dest->h -= rows;
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}
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static void JpegI422ToI420(void* opaque,
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const uint8* const* data,
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const int* strides,
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int rows) {
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I420Buffers* dest = (I420Buffers*)(opaque);
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I422ToI420(data[0], strides[0], data[1], strides[1], data[2], strides[2],
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dest->y, dest->y_stride, dest->u, dest->u_stride, dest->v,
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dest->v_stride, dest->w, rows);
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dest->y += rows * dest->y_stride;
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dest->u += ((rows + 1) >> 1) * dest->u_stride;
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dest->v += ((rows + 1) >> 1) * dest->v_stride;
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dest->h -= rows;
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}
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static void JpegI444ToI420(void* opaque,
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const uint8* const* data,
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const int* strides,
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int rows) {
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I420Buffers* dest = (I420Buffers*)(opaque);
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I444ToI420(data[0], strides[0], data[1], strides[1], data[2], strides[2],
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dest->y, dest->y_stride, dest->u, dest->u_stride, dest->v,
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dest->v_stride, dest->w, rows);
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dest->y += rows * dest->y_stride;
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dest->u += ((rows + 1) >> 1) * dest->u_stride;
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dest->v += ((rows + 1) >> 1) * dest->v_stride;
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dest->h -= rows;
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}
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static void JpegI400ToI420(void* opaque,
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const uint8* const* data,
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const int* strides,
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int rows) {
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I420Buffers* dest = (I420Buffers*)(opaque);
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I400ToI420(data[0], strides[0], dest->y, dest->y_stride, dest->u,
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dest->u_stride, dest->v, dest->v_stride, dest->w, rows);
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dest->y += rows * dest->y_stride;
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dest->u += ((rows + 1) >> 1) * dest->u_stride;
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dest->v += ((rows + 1) >> 1) * dest->v_stride;
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dest->h -= rows;
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}
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// Query size of MJPG in pixels.
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LIBYUV_API
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int MJPGSize(const uint8* sample, size_t sample_size, int* width, int* height) {
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MJpegDecoder mjpeg_decoder;
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LIBYUV_BOOL ret = mjpeg_decoder.LoadFrame(sample, sample_size);
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if (ret) {
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*width = mjpeg_decoder.GetWidth();
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*height = mjpeg_decoder.GetHeight();
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}
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mjpeg_decoder.UnloadFrame();
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return ret ? 0 : -1; // -1 for runtime failure.
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}
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// MJPG (Motion JPeg) to I420
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// TODO(fbarchard): review w and h requirement. dw and dh may be enough.
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LIBYUV_API
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int MJPGToI420(const uint8* sample,
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size_t sample_size,
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uint8* y,
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int y_stride,
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uint8* u,
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int u_stride,
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uint8* v,
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int v_stride,
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int w,
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int h,
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int dw,
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int dh) {
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if (sample_size == kUnknownDataSize) {
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// ERROR: MJPEG frame size unknown
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return -1;
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}
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// TODO(fbarchard): Port MJpeg to C.
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MJpegDecoder mjpeg_decoder;
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LIBYUV_BOOL ret = mjpeg_decoder.LoadFrame(sample, sample_size);
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if (ret &&
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(mjpeg_decoder.GetWidth() != w || mjpeg_decoder.GetHeight() != h)) {
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// ERROR: MJPEG frame has unexpected dimensions
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mjpeg_decoder.UnloadFrame();
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return 1; // runtime failure
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}
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if (ret) {
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I420Buffers bufs = {y, y_stride, u, u_stride, v, v_stride, dw, dh};
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// YUV420
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if (mjpeg_decoder.GetColorSpace() == MJpegDecoder::kColorSpaceYCbCr &&
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mjpeg_decoder.GetNumComponents() == 3 &&
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mjpeg_decoder.GetVertSampFactor(0) == 2 &&
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mjpeg_decoder.GetHorizSampFactor(0) == 2 &&
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mjpeg_decoder.GetVertSampFactor(1) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
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mjpeg_decoder.GetVertSampFactor(2) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(2) == 1) {
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ret = mjpeg_decoder.DecodeToCallback(&JpegCopyI420, &bufs, dw, dh);
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// YUV422
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} else if (mjpeg_decoder.GetColorSpace() ==
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MJpegDecoder::kColorSpaceYCbCr &&
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mjpeg_decoder.GetNumComponents() == 3 &&
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mjpeg_decoder.GetVertSampFactor(0) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(0) == 2 &&
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mjpeg_decoder.GetVertSampFactor(1) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
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mjpeg_decoder.GetVertSampFactor(2) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(2) == 1) {
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ret = mjpeg_decoder.DecodeToCallback(&JpegI422ToI420, &bufs, dw, dh);
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// YUV444
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} else if (mjpeg_decoder.GetColorSpace() ==
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MJpegDecoder::kColorSpaceYCbCr &&
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mjpeg_decoder.GetNumComponents() == 3 &&
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mjpeg_decoder.GetVertSampFactor(0) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(0) == 1 &&
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mjpeg_decoder.GetVertSampFactor(1) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
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mjpeg_decoder.GetVertSampFactor(2) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(2) == 1) {
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ret = mjpeg_decoder.DecodeToCallback(&JpegI444ToI420, &bufs, dw, dh);
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// YUV400
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} else if (mjpeg_decoder.GetColorSpace() ==
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MJpegDecoder::kColorSpaceGrayscale &&
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mjpeg_decoder.GetNumComponents() == 1 &&
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mjpeg_decoder.GetVertSampFactor(0) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(0) == 1) {
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ret = mjpeg_decoder.DecodeToCallback(&JpegI400ToI420, &bufs, dw, dh);
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} else {
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// TODO(fbarchard): Implement conversion for any other colorspace/sample
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// factors that occur in practice.
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// ERROR: Unable to convert MJPEG frame because format is not supported
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mjpeg_decoder.UnloadFrame();
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return 1;
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}
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}
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return ret ? 0 : 1;
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}
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#ifdef HAVE_JPEG
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struct ARGBBuffers {
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uint8* argb;
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int argb_stride;
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int w;
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int h;
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};
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static void JpegI420ToARGB(void* opaque,
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const uint8* const* data,
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const int* strides,
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int rows) {
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ARGBBuffers* dest = (ARGBBuffers*)(opaque);
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I420ToARGB(data[0], strides[0], data[1], strides[1], data[2], strides[2],
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dest->argb, dest->argb_stride, dest->w, rows);
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dest->argb += rows * dest->argb_stride;
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dest->h -= rows;
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}
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static void JpegI422ToARGB(void* opaque,
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const uint8* const* data,
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const int* strides,
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int rows) {
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ARGBBuffers* dest = (ARGBBuffers*)(opaque);
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I422ToARGB(data[0], strides[0], data[1], strides[1], data[2], strides[2],
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dest->argb, dest->argb_stride, dest->w, rows);
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dest->argb += rows * dest->argb_stride;
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dest->h -= rows;
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}
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static void JpegI444ToARGB(void* opaque,
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const uint8* const* data,
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const int* strides,
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int rows) {
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ARGBBuffers* dest = (ARGBBuffers*)(opaque);
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I444ToARGB(data[0], strides[0], data[1], strides[1], data[2], strides[2],
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dest->argb, dest->argb_stride, dest->w, rows);
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dest->argb += rows * dest->argb_stride;
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dest->h -= rows;
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}
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static void JpegI400ToARGB(void* opaque,
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const uint8* const* data,
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const int* strides,
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int rows) {
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ARGBBuffers* dest = (ARGBBuffers*)(opaque);
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I400ToARGB(data[0], strides[0], dest->argb, dest->argb_stride, dest->w, rows);
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dest->argb += rows * dest->argb_stride;
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dest->h -= rows;
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}
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// MJPG (Motion JPeg) to ARGB
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// TODO(fbarchard): review w and h requirement. dw and dh may be enough.
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LIBYUV_API
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int MJPGToARGB(const uint8* sample,
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size_t sample_size,
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uint8* argb,
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int argb_stride,
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int w,
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int h,
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int dw,
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int dh) {
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if (sample_size == kUnknownDataSize) {
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// ERROR: MJPEG frame size unknown
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return -1;
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}
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// TODO(fbarchard): Port MJpeg to C.
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MJpegDecoder mjpeg_decoder;
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LIBYUV_BOOL ret = mjpeg_decoder.LoadFrame(sample, sample_size);
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if (ret &&
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(mjpeg_decoder.GetWidth() != w || mjpeg_decoder.GetHeight() != h)) {
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// ERROR: MJPEG frame has unexpected dimensions
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mjpeg_decoder.UnloadFrame();
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return 1; // runtime failure
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}
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if (ret) {
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ARGBBuffers bufs = {argb, argb_stride, dw, dh};
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// YUV420
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if (mjpeg_decoder.GetColorSpace() == MJpegDecoder::kColorSpaceYCbCr &&
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mjpeg_decoder.GetNumComponents() == 3 &&
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mjpeg_decoder.GetVertSampFactor(0) == 2 &&
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mjpeg_decoder.GetHorizSampFactor(0) == 2 &&
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mjpeg_decoder.GetVertSampFactor(1) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
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mjpeg_decoder.GetVertSampFactor(2) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(2) == 1) {
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ret = mjpeg_decoder.DecodeToCallback(&JpegI420ToARGB, &bufs, dw, dh);
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// YUV422
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} else if (mjpeg_decoder.GetColorSpace() ==
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MJpegDecoder::kColorSpaceYCbCr &&
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mjpeg_decoder.GetNumComponents() == 3 &&
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mjpeg_decoder.GetVertSampFactor(0) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(0) == 2 &&
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mjpeg_decoder.GetVertSampFactor(1) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
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mjpeg_decoder.GetVertSampFactor(2) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(2) == 1) {
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ret = mjpeg_decoder.DecodeToCallback(&JpegI422ToARGB, &bufs, dw, dh);
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// YUV444
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} else if (mjpeg_decoder.GetColorSpace() ==
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MJpegDecoder::kColorSpaceYCbCr &&
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mjpeg_decoder.GetNumComponents() == 3 &&
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mjpeg_decoder.GetVertSampFactor(0) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(0) == 1 &&
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mjpeg_decoder.GetVertSampFactor(1) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(1) == 1 &&
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mjpeg_decoder.GetVertSampFactor(2) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(2) == 1) {
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ret = mjpeg_decoder.DecodeToCallback(&JpegI444ToARGB, &bufs, dw, dh);
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// YUV400
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} else if (mjpeg_decoder.GetColorSpace() ==
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MJpegDecoder::kColorSpaceGrayscale &&
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mjpeg_decoder.GetNumComponents() == 1 &&
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mjpeg_decoder.GetVertSampFactor(0) == 1 &&
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mjpeg_decoder.GetHorizSampFactor(0) == 1) {
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ret = mjpeg_decoder.DecodeToCallback(&JpegI400ToARGB, &bufs, dw, dh);
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} else {
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// TODO(fbarchard): Implement conversion for any other colorspace/sample
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// factors that occur in practice.
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// ERROR: Unable to convert MJPEG frame because format is not supported
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mjpeg_decoder.UnloadFrame();
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return 1;
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}
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}
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return ret ? 0 : 1;
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}
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#endif
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#endif
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#ifdef __cplusplus
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} // extern "C"
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} // namespace libyuv
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#endif
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