C++ (Cpp) WebPCopyDecBuffer Beispiele

Beispiel #1

Datei: webp.c Projekt: ZW19911104/libwebp

static uint8_t* Decode(WEBP_CSP_MODE mode, const uint8_t* const data,
                       size_t data_size, int* const width, int* const height,
                       WebPDecBuffer* const keep_info) {
  WebPDecParams params;
  WebPDecBuffer output;

  WebPInitDecBuffer(&output);
  WebPResetDecParams(&params);
  params.output = &output;
  output.colorspace = mode;

  // Retrieve (and report back) the required dimensions from bitstream.
  if (!WebPGetInfo(data, data_size, &output.width, &output.height)) {
    return NULL;
  }
  if (width != NULL) *width = output.width;
  if (height != NULL) *height = output.height;

  // Decode
  if (DecodeInto(data, data_size, &params) != VP8_STATUS_OK) {
    return NULL;
  }
  if (keep_info != NULL) {    // keep track of the side-info
    WebPCopyDecBuffer(&output, keep_info);
  }
  // return decoded samples (don't clear 'output'!)
  return WebPIsRGBMode(mode) ? output.u.RGBA.rgba : output.u.YUVA.y;
}

Beispiel #2

Datei: webp.c Projekt: qtekfun/htcDesire820Kernel

static uint8_t* Decode(WEBP_CSP_MODE mode, const uint8_t* const data,
                       size_t data_size, int* const width, int* const height,
                       WebPDecBuffer* const keep_info) {
  WebPDecParams params;
  WebPDecBuffer output;

  WebPInitDecBuffer(&output);
  WebPResetDecParams(&params);
  params.output = &output;
  output.colorspace = mode;

  
  if (!WebPGetInfo(data, data_size, &output.width, &output.height)) {
    return NULL;
  }
  if (width != NULL) *width = output.width;
  if (height != NULL) *height = output.height;

  
  if (DecodeInto(data, data_size, &params) != VP8_STATUS_OK) {
    return NULL;
  }
  if (keep_info != NULL) {    
    WebPCopyDecBuffer(&output, keep_info);
  }
  
  return WebPIsRGBMode(mode) ? output.u.RGBA.rgba : output.u.YUVA.y;
}