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Diffstat (limited to 'opengl/include/ETC1/etc1.h')
-rw-r--r-- | opengl/include/ETC1/etc1.h | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/opengl/include/ETC1/etc1.h b/opengl/include/ETC1/etc1.h deleted file mode 100644 index 0d38905..0000000 --- a/opengl/include/ETC1/etc1.h +++ /dev/null @@ -1,106 +0,0 @@ -// Copyright 2009 Google Inc. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef __etc1_h__ -#define __etc1_h__ - -#define ETC1_ENCODED_BLOCK_SIZE 8 -#define ETC1_DECODED_BLOCK_SIZE 48 - -#ifndef ETC1_RGB8_OES -#define ETC1_RGB8_OES 0x8D64 -#endif - -typedef unsigned char etc1_byte; -typedef int etc1_bool; -typedef unsigned int etc1_uint32; - -#ifdef __cplusplus -extern "C" { -#endif - -// Encode a block of pixels. -// -// pIn is a pointer to a ETC_DECODED_BLOCK_SIZE array of bytes that represent a -// 4 x 4 square of 3-byte pixels in form R, G, B. Byte (3 * (x + 4 * y) is the R -// value of pixel (x, y). -// -// validPixelMask is a 16-bit mask where bit (1 << (x + y * 4)) indicates whether -// the corresponding (x,y) pixel is valid. Invalid pixel color values are ignored when compressing. -// -// pOut is an ETC1 compressed version of the data. - -void etc1_encode_block(const etc1_byte* pIn, etc1_uint32 validPixelMask, etc1_byte* pOut); - -// Decode a block of pixels. -// -// pIn is an ETC1 compressed version of the data. -// -// pOut is a pointer to a ETC_DECODED_BLOCK_SIZE array of bytes that represent a -// 4 x 4 square of 3-byte pixels in form R, G, B. Byte (3 * (x + 4 * y) is the R -// value of pixel (x, y). - -void etc1_decode_block(const etc1_byte* pIn, etc1_byte* pOut); - -// Return the size of the encoded image data (does not include size of PKM header). - -etc1_uint32 etc1_get_encoded_data_size(etc1_uint32 width, etc1_uint32 height); - -// Encode an entire image. -// pIn - pointer to the image data. Formatted such that -// pixel (x,y) is at pIn + pixelSize * x + stride * y; -// pOut - pointer to encoded data. Must be large enough to store entire encoded image. -// pixelSize can be 2 or 3. 2 is an GL_UNSIGNED_SHORT_5_6_5 image, 3 is a GL_BYTE RGB image. -// returns non-zero if there is an error. - -int etc1_encode_image(const etc1_byte* pIn, etc1_uint32 width, etc1_uint32 height, - etc1_uint32 pixelSize, etc1_uint32 stride, etc1_byte* pOut); - -// Decode an entire image. -// pIn - pointer to encoded data. -// pOut - pointer to the image data. Will be written such that -// pixel (x,y) is at pIn + pixelSize * x + stride * y. Must be -// large enough to store entire image. -// pixelSize can be 2 or 3. 2 is an GL_UNSIGNED_SHORT_5_6_5 image, 3 is a GL_BYTE RGB image. -// returns non-zero if there is an error. - -int etc1_decode_image(const etc1_byte* pIn, etc1_byte* pOut, - etc1_uint32 width, etc1_uint32 height, - etc1_uint32 pixelSize, etc1_uint32 stride); - -// Size of a PKM header, in bytes. - -#define ETC_PKM_HEADER_SIZE 16 - -// Format a PKM header - -void etc1_pkm_format_header(etc1_byte* pHeader, etc1_uint32 width, etc1_uint32 height); - -// Check if a PKM header is correctly formatted. - -etc1_bool etc1_pkm_is_valid(const etc1_byte* pHeader); - -// Read the image width from a PKM header - -etc1_uint32 etc1_pkm_get_width(const etc1_byte* pHeader); - -// Read the image height from a PKM header - -etc1_uint32 etc1_pkm_get_height(const etc1_byte* pHeader); - -#ifdef __cplusplus -} -#endif - -#endif |