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-rw-r--r--drivers/webpold/mux/muxi.h271
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diff --git a/drivers/webpold/mux/muxi.h b/drivers/webpold/mux/muxi.h
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--- a/drivers/webpold/mux/muxi.h
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-// 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 for mux library.
-//
-// Author: Urvang (urvang@google.com)
-
-#ifndef WEBP_MUX_MUXI_H_
-#define WEBP_MUX_MUXI_H_
-
-#include <stdlib.h>
-#include "../dec/vp8i.h"
-#include "../dec/vp8li.h"
-#include "../format_constants.h"
-#include "../mux.h"
-
-#if defined(__cplusplus) || defined(c_plusplus)
-extern "C" {
-#endif
-
-//------------------------------------------------------------------------------
-// Defines and constants.
-
-// Chunk object.
-typedef struct WebPChunk WebPChunk;
-struct WebPChunk {
- uint32_t tag_;
- int owner_; // True if *data_ memory is owned internally.
- // VP8X, Loop, and other internally created chunks
- // like frame/tile are always owned.
- WebPData data_;
- WebPChunk* next_;
-};
-
-// MuxImage object. Store a full webp image (including frame/tile chunk, alpha
-// chunk and VP8/VP8L chunk),
-typedef struct WebPMuxImage WebPMuxImage;
-struct WebPMuxImage {
- WebPChunk* header_; // Corresponds to WEBP_CHUNK_FRAME/WEBP_CHUNK_TILE.
- WebPChunk* alpha_; // Corresponds to WEBP_CHUNK_ALPHA.
- WebPChunk* img_; // Corresponds to WEBP_CHUNK_IMAGE.
- int is_partial_; // True if only some of the chunks are filled.
- WebPMuxImage* next_;
-};
-
-// Main mux object. Stores data chunks.
-struct WebPMux {
- WebPMuxImage* images_;
- WebPChunk* iccp_;
- WebPChunk* meta_;
- WebPChunk* loop_;
- WebPChunk* vp8x_;
-
- WebPChunk* unknown_;
-};
-
-// CHUNK_INDEX enum: used for indexing within 'kChunks' (defined below) only.
-// Note: the reason for having two enums ('WebPChunkId' and 'CHUNK_INDEX') is to
-// allow two different chunks to have the same id (e.g. WebPChunkId
-// 'WEBP_CHUNK_IMAGE' can correspond to CHUNK_INDEX 'IDX_VP8' or 'IDX_VP8L').
-typedef enum {
- IDX_VP8X = 0,
- IDX_ICCP,
- IDX_LOOP,
- IDX_FRAME,
- IDX_TILE,
- IDX_ALPHA,
- IDX_VP8,
- IDX_VP8L,
- IDX_META,
- IDX_UNKNOWN,
-
- IDX_NIL,
- IDX_LAST_CHUNK
-} CHUNK_INDEX;
-
-#define NIL_TAG 0x00000000u // To signal void chunk.
-
-#define MKFOURCC(a, b, c, d) ((uint32_t)(a) | (b) << 8 | (c) << 16 | (d) << 24)
-
-typedef struct {
- uint32_t tag;
- WebPChunkId id;
- uint32_t size;
-} ChunkInfo;
-
-extern const ChunkInfo kChunks[IDX_LAST_CHUNK];
-
-//------------------------------------------------------------------------------
-// Helper functions.
-
-// Read 16, 24 or 32 bits stored in little-endian order.
-static WEBP_INLINE int GetLE16(const uint8_t* const data) {
- return (int)(data[0] << 0) | (data[1] << 8);
-}
-
-static WEBP_INLINE int GetLE24(const uint8_t* const data) {
- return GetLE16(data) | (data[2] << 16);
-}
-
-static WEBP_INLINE uint32_t GetLE32(const uint8_t* const data) {
- return (uint32_t)GetLE16(data) | (GetLE16(data + 2) << 16);
-}
-
-// Store 16, 24 or 32 bits in little-endian order.
-static WEBP_INLINE void PutLE16(uint8_t* const data, int val) {
- assert(val < (1 << 16));
- data[0] = (val >> 0);
- data[1] = (val >> 8);
-}
-
-static WEBP_INLINE void PutLE24(uint8_t* const data, int val) {
- assert(val < (1 << 24));
- PutLE16(data, val & 0xffff);
- data[2] = (val >> 16);
-}
-
-static WEBP_INLINE void PutLE32(uint8_t* const data, uint32_t val) {
- PutLE16(data, (int)(val & 0xffff));
- PutLE16(data + 2, (int)(val >> 16));
-}
-
-static WEBP_INLINE size_t SizeWithPadding(size_t chunk_size) {
- return CHUNK_HEADER_SIZE + ((chunk_size + 1) & ~1U);
-}
-
-//------------------------------------------------------------------------------
-// Chunk object management.
-
-// Initialize.
-void ChunkInit(WebPChunk* const chunk);
-
-// Get chunk index from chunk tag. Returns IDX_NIL if not found.
-CHUNK_INDEX ChunkGetIndexFromTag(uint32_t tag);
-
-// Get chunk id from chunk tag. Returns WEBP_CHUNK_NIL if not found.
-WebPChunkId ChunkGetIdFromTag(uint32_t tag);
-
-// Search for nth chunk with given 'tag' in the chunk list.
-// nth = 0 means "last of the list".
-WebPChunk* ChunkSearchList(WebPChunk* first, uint32_t nth, uint32_t tag);
-
-// Fill the chunk with the given data.
-WebPMuxError ChunkAssignData(WebPChunk* chunk, const WebPData* const data,
- int copy_data, uint32_t tag);
-
-// Sets 'chunk' at nth position in the 'chunk_list'.
-// nth = 0 has the special meaning "last of the list".
-WebPMuxError ChunkSetNth(const WebPChunk* chunk, WebPChunk** chunk_list,
- uint32_t nth);
-
-// Releases chunk and returns chunk->next_.
-WebPChunk* ChunkRelease(WebPChunk* const chunk);
-
-// Deletes given chunk & returns chunk->next_.
-WebPChunk* ChunkDelete(WebPChunk* const chunk);
-
-// Size of a chunk including header and padding.
-static WEBP_INLINE size_t ChunkDiskSize(const WebPChunk* chunk) {
- const size_t data_size = chunk->data_.size_;
- assert(data_size < MAX_CHUNK_PAYLOAD);
- return SizeWithPadding(data_size);
-}
-
-// Total size of a list of chunks.
-size_t ChunksListDiskSize(const WebPChunk* chunk_list);
-
-// Write out the given list of chunks into 'dst'.
-uint8_t* ChunkListEmit(const WebPChunk* chunk_list, uint8_t* dst);
-
-// Get the width & height of image stored in 'image_chunk'.
-WebPMuxError MuxGetImageWidthHeight(const WebPChunk* const image_chunk,
- int* const width, int* const height);
-
-//------------------------------------------------------------------------------
-// MuxImage object management.
-
-// Initialize.
-void MuxImageInit(WebPMuxImage* const wpi);
-
-// Releases image 'wpi' and returns wpi->next.
-WebPMuxImage* MuxImageRelease(WebPMuxImage* const wpi);
-
-// Delete image 'wpi' and return the next image in the list or NULL.
-// 'wpi' can be NULL.
-WebPMuxImage* MuxImageDelete(WebPMuxImage* const wpi);
-
-// Delete all images in 'wpi_list'.
-void MuxImageDeleteAll(WebPMuxImage** const wpi_list);
-
-// Count number of images matching the given tag id in the 'wpi_list'.
-int MuxImageCount(const WebPMuxImage* wpi_list, WebPChunkId id);
-
-// Check if given ID corresponds to an image related chunk.
-static WEBP_INLINE int IsWPI(WebPChunkId id) {
- switch (id) {
- case WEBP_CHUNK_FRAME:
- case WEBP_CHUNK_TILE:
- case WEBP_CHUNK_ALPHA:
- case WEBP_CHUNK_IMAGE: return 1;
- default: return 0;
- }
-}
-
-// Get a reference to appropriate chunk list within an image given chunk tag.
-static WEBP_INLINE WebPChunk** MuxImageGetListFromId(
- const WebPMuxImage* const wpi, WebPChunkId id) {
- assert(wpi != NULL);
- switch (id) {
- case WEBP_CHUNK_FRAME:
- case WEBP_CHUNK_TILE: return (WebPChunk**)&wpi->header_;
- case WEBP_CHUNK_ALPHA: return (WebPChunk**)&wpi->alpha_;
- case WEBP_CHUNK_IMAGE: return (WebPChunk**)&wpi->img_;
- default: return NULL;
- }
-}
-
-// Pushes 'wpi' at the end of 'wpi_list'.
-WebPMuxError MuxImagePush(const WebPMuxImage* wpi, WebPMuxImage** wpi_list);
-
-// Delete nth image in the image list with given tag id.
-WebPMuxError MuxImageDeleteNth(WebPMuxImage** wpi_list, uint32_t nth,
- WebPChunkId id);
-
-// Get nth image in the image list with given tag id.
-WebPMuxError MuxImageGetNth(const WebPMuxImage** wpi_list, uint32_t nth,
- WebPChunkId id, WebPMuxImage** wpi);
-
-// Total size of the given image.
-size_t MuxImageDiskSize(const WebPMuxImage* const wpi);
-
-// Total size of a list of images.
-size_t MuxImageListDiskSize(const WebPMuxImage* wpi_list);
-
-// Write out the given image into 'dst'.
-uint8_t* MuxImageEmit(const WebPMuxImage* const wpi, uint8_t* dst);
-
-// Write out the given list of images into 'dst'.
-uint8_t* MuxImageListEmit(const WebPMuxImage* wpi_list, uint8_t* dst);
-
-//------------------------------------------------------------------------------
-// Helper methods for mux.
-
-// Checks if the given image list contains at least one lossless image.
-int MuxHasLosslessImages(const WebPMuxImage* images);
-
-// Write out RIFF header into 'data', given total data size 'size'.
-uint8_t* MuxEmitRiffHeader(uint8_t* const data, size_t size);
-
-// Returns the list where chunk with given ID is to be inserted in mux.
-// Return value is NULL if this chunk should be inserted in mux->images_ list
-// or if 'id' is not known.
-WebPChunk** MuxGetChunkListFromId(const WebPMux* mux, WebPChunkId id);
-
-// Validates that the given mux has a single image.
-WebPMuxError MuxValidateForImage(const WebPMux* const mux);
-
-// Validates the given mux object.
-WebPMuxError MuxValidate(const WebPMux* const mux);
-
-//------------------------------------------------------------------------------
-
-#if defined(__cplusplus) || defined(c_plusplus)
-} // extern "C"
-#endif
-
-#endif /* WEBP_MUX_MUXI_H_ */
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