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Diffstat (limited to 'drivers/webpold/dec/webpi.h')
| -rw-r--r-- | drivers/webpold/dec/webpi.h | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/drivers/webpold/dec/webpi.h b/drivers/webpold/dec/webpi.h deleted file mode 100644 index 44e5744411..0000000000 --- a/drivers/webpold/dec/webpi.h +++ /dev/null @@ -1,114 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// This code is licensed under the same terms as WebM: -// Software License Agreement: http://www.webmproject.org/license/software/ -// Additional IP Rights Grant: http://www.webmproject.org/license/additional/ -// ----------------------------------------------------------------------------- -// -// Internal header: WebP decoding parameters and custom IO on buffer -// -// Author: somnath@google.com (Somnath Banerjee) - -#ifndef WEBP_DEC_WEBPI_H_ -#define WEBP_DEC_WEBPI_H_ - -#if defined(__cplusplus) || defined(c_plusplus) -extern "C" { -#endif - -#include "../utils/rescaler.h" -#include "./decode_vp8.h" - -//------------------------------------------------------------------------------ -// WebPDecParams: Decoding output parameters. Transient internal object. - -typedef struct WebPDecParams WebPDecParams; -typedef int (*OutputFunc)(const VP8Io* const io, WebPDecParams* const p); -typedef int (*OutputRowFunc)(WebPDecParams* const p, int y_pos); - -struct WebPDecParams { - WebPDecBuffer* output; // output buffer. - uint8_t* tmp_y, *tmp_u, *tmp_v; // cache for the fancy upsampler - // or used for tmp rescaling - - int last_y; // coordinate of the line that was last output - const WebPDecoderOptions* options; // if not NULL, use alt decoding features - // rescalers - WebPRescaler scaler_y, scaler_u, scaler_v, scaler_a; - void* memory; // overall scratch memory for the output work. - - OutputFunc emit; // output RGB or YUV samples - OutputFunc emit_alpha; // output alpha channel - OutputRowFunc emit_alpha_row; // output one line of rescaled alpha values -}; - -// Should be called first, before any use of the WebPDecParams object. -void WebPResetDecParams(WebPDecParams* const params); - -//------------------------------------------------------------------------------ -// Header parsing helpers - -// Structure storing a description of the RIFF headers. -typedef struct { - const uint8_t* data; // input buffer - size_t data_size; // input buffer size - size_t offset; // offset to main data chunk (VP8 or VP8L) - const uint8_t* alpha_data; // points to alpha chunk (if present) - size_t alpha_data_size; // alpha chunk size - size_t compressed_size; // VP8/VP8L compressed data size - size_t riff_size; // size of the riff payload (or 0 if absent) - int is_lossless; // true if a VP8L chunk is present -} WebPHeaderStructure; - -// Skips over all valid chunks prior to the first VP8/VP8L frame header. -// Returns VP8_STATUS_OK on success, -// VP8_STATUS_BITSTREAM_ERROR if an invalid header/chunk is found, and -// VP8_STATUS_NOT_ENOUGH_DATA if case of insufficient data. -// In 'headers', compressed_size, offset, alpha_data, alpha_size and lossless -// fields are updated appropriately upon success. -VP8StatusCode WebPParseHeaders(WebPHeaderStructure* const headers); - -//------------------------------------------------------------------------------ -// Misc utils - -// Initializes VP8Io with custom setup, io and teardown functions. The default -// hooks will use the supplied 'params' as io->opaque handle. -void WebPInitCustomIo(WebPDecParams* const params, VP8Io* const io); - -// Setup crop_xxx fields, mb_w and mb_h in io. 'src_colorspace' refers -// to the *compressed* format, not the output one. -int WebPIoInitFromOptions(const WebPDecoderOptions* const options, - VP8Io* const io, WEBP_CSP_MODE src_colorspace); - -//------------------------------------------------------------------------------ -// Internal functions regarding WebPDecBuffer memory (in buffer.c). -// Don't really need to be externally visible for now. - -// Prepare 'buffer' with the requested initial dimensions width/height. -// If no external storage is supplied, initializes buffer by allocating output -// memory and setting up the stride information. Validate the parameters. Return -// an error code in case of problem (no memory, or invalid stride / size / -// dimension / etc.). If *options is not NULL, also verify that the options' -// parameters are valid and apply them to the width/height dimensions of the -// output buffer. This takes cropping / scaling / rotation into account. -VP8StatusCode WebPAllocateDecBuffer(int width, int height, - const WebPDecoderOptions* const options, - WebPDecBuffer* const buffer); - -// Copy 'src' into 'dst' buffer, making sure 'dst' is not marked as owner of the -// memory (still held by 'src'). -void WebPCopyDecBuffer(const WebPDecBuffer* const src, - WebPDecBuffer* const dst); - -// Copy and transfer ownership from src to dst (beware of parameter order!) -void WebPGrabDecBuffer(WebPDecBuffer* const src, WebPDecBuffer* const dst); - - - -//------------------------------------------------------------------------------ - -#if defined(__cplusplus) || defined(c_plusplus) -} // extern "C" -#endif - -#endif /* WEBP_DEC_WEBPI_H_ */ |