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WEBP_REDUCE_SIZE: disable all rescaler code
BUG=webp:355 Change-Id: Id87cb11902e3fb8544a214308526ea9665ce8440
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@ -485,6 +485,7 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
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//------------------------------------------------------------------------------
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// Scaling.
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#if !defined(WEBP_REDUCE_SIZE)
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static int AllocateAndInitRescaler(VP8LDecoder* const dec, VP8Io* const io) {
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const int num_channels = 4;
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const int in_width = io->mb_w;
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@ -516,10 +517,13 @@ static int AllocateAndInitRescaler(VP8LDecoder* const dec, VP8Io* const io) {
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out_width, out_height, 0, num_channels, work);
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return 1;
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}
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#endif // WEBP_REDUCE_SIZE
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//------------------------------------------------------------------------------
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// Export to ARGB
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#if !defined(WEBP_REDUCE_SIZE)
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// We have special "export" function since we need to convert from BGRA
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static int Export(WebPRescaler* const rescaler, WEBP_CSP_MODE colorspace,
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int rgba_stride, uint8_t* const rgba) {
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@ -561,6 +565,8 @@ static int EmitRescaledRowsRGBA(const VP8LDecoder* const dec,
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return num_lines_out;
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}
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#endif // WEBP_REDUCE_SIZE
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// Emit rows without any scaling.
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static int EmitRows(WEBP_CSP_MODE colorspace,
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const uint8_t* row_in, int in_stride,
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@ -746,9 +752,12 @@ static void ProcessRows(VP8LDecoder* const dec, int row) {
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if (WebPIsRGBMode(output->colorspace)) { // convert to RGBA
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const WebPRGBABuffer* const buf = &output->u.RGBA;
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uint8_t* const rgba = buf->rgba + dec->last_out_row_ * buf->stride;
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const int num_rows_out = io->use_scaling ?
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const int num_rows_out =
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#if !defined(WEBP_REDUCE_SIZE)
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io->use_scaling ?
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EmitRescaledRowsRGBA(dec, rows_data, in_stride, io->mb_h,
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rgba, buf->stride) :
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#endif // WEBP_REDUCE_SIZE
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EmitRows(output->colorspace, rows_data, in_stride,
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io->mb_w, io->mb_h, rgba, buf->stride);
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// Update 'last_out_row_'.
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@ -1632,12 +1641,19 @@ int VP8LDecodeImage(VP8LDecoder* const dec) {
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if (!AllocateInternalBuffers32b(dec, io->width)) goto Err;
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#if !defined(WEBP_REDUCE_SIZE)
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if (io->use_scaling && !AllocateAndInitRescaler(dec, io)) goto Err;
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if (io->use_scaling || WebPIsPremultipliedMode(dec->output_->colorspace)) {
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// need the alpha-multiply functions for premultiplied output or rescaling
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WebPInitAlphaProcessing();
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}
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#else
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if (io->use_scaling) {
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dec->status_ = VP8_STATUS_INVALID_PARAM;
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goto Err;
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}
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#endif
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if (!WebPIsRGBMode(dec->output_->colorspace)) {
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WebPInitConvertARGBToYUV();
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if (dec->output_->u.YUVA.a != NULL) WebPInitAlphaProcessing();
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