diff options
Diffstat (limited to 'drivers/webp/format_constants.h')
| -rw-r--r-- | drivers/webp/format_constants.h | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/drivers/webp/format_constants.h b/drivers/webp/format_constants.h index 7ce498f672..b6e78a643e 100644 --- a/drivers/webp/format_constants.h +++ b/drivers/webp/format_constants.h @@ -1,8 +1,10 @@ // Copyright 2012 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/ +// Use of this source code is governed by a BSD-style license +// that can be found in the COPYING file in the root of the source +// tree. An additional intellectual property rights grant can be found +// in the file PATENTS. All contributing project authors may +// be found in the AUTHORS file in the root of the source tree. // ----------------------------------------------------------------------------- // // Internal header for constants related to WebP file format. @@ -12,6 +14,9 @@ #ifndef WEBP_WEBP_FORMAT_CONSTANTS_H_ #define WEBP_WEBP_FORMAT_CONSTANTS_H_ +// Create fourcc of the chunk from the chunk tag characters. +#define MKFOURCC(a, b, c, d) ((a) | (b) << 8 | (c) << 16 | (uint32_t)(d) << 24) + // VP8 related constants. #define VP8_SIGNATURE 0x9d012a // Signature in VP8 data. #define VP8_MAX_PARTITION0_SIZE (1 << 19) // max size of mode partition @@ -65,23 +70,16 @@ typedef enum { #define CHUNK_SIZE_BYTES 4 // Size needed to store chunk's size. #define CHUNK_HEADER_SIZE 8 // Size of a chunk header. #define RIFF_HEADER_SIZE 12 // Size of the RIFF header ("RIFFnnnnWEBP"). -#define FRAME_CHUNK_SIZE 15 // Size of a FRM chunk. -#define LOOP_CHUNK_SIZE 2 // Size of a LOOP chunk. -#define TILE_CHUNK_SIZE 6 // Size of a TILE chunk. +#define ANMF_CHUNK_SIZE 16 // Size of an ANMF chunk. +#define ANIM_CHUNK_SIZE 6 // Size of an ANIM chunk. +#define FRGM_CHUNK_SIZE 6 // Size of a FRGM chunk. #define VP8X_CHUNK_SIZE 10 // Size of a VP8X chunk. -#define TILING_FLAG_BIT 0x01 // Set if tiles are possibly used. -#define ANIMATION_FLAG_BIT 0x02 // Set if some animation is expected -#define ICC_FLAG_BIT 0x04 // Whether ICC is present or not. -#define METADATA_FLAG_BIT 0x08 // Set if some META chunk is possibly present. -#define ALPHA_FLAG_BIT 0x10 // Should be same as the ALPHA_FLAG in mux.h -#define ROTATION_FLAG_BITS 0xe0 // all 3 bits for rotation + symmetry - -#define MAX_CANVAS_SIZE (1 << 24) // 24-bit max for VP8X width/height. -#define MAX_IMAGE_AREA (1ULL << 32) // 32-bit max for width x height. -#define MAX_LOOP_COUNT (1 << 16) // maximum value for loop-count -#define MAX_DURATION (1 << 24) // maximum duration -#define MAX_POSITION_OFFSET (1 << 24) // maximum frame/tile x/y offset +#define MAX_CANVAS_SIZE (1 << 24) // 24-bit max for VP8X width/height. +#define MAX_IMAGE_AREA (1ULL << 32) // 32-bit max for width x height. +#define MAX_LOOP_COUNT (1 << 16) // maximum value for loop-count +#define MAX_DURATION (1 << 24) // maximum duration +#define MAX_POSITION_OFFSET (1 << 24) // maximum frame/fragment x/y offset // Maximum chunk payload is such that adding the header and padding won't // overflow a uint32_t. |