FFmpeg/libavutil/avutil.h

/*
 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVUTIL_H
#define AVUTIL_H

/**
 * @file avutil.h
 * external api header.
 */


#define AV_STRINGIFY(s)         AV_TOSTRING(s)
#define AV_TOSTRING(s) #s

#define LIBAVUTIL_VERSION_INT   ((49<<16)+(4<<8)+0)
#define LIBAVUTIL_VERSION       49.4.0
#define LIBAVUTIL_BUILD         LIBAVUTIL_VERSION_INT

#define LIBAVUTIL_IDENT         "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)


#include "common.h"
#include "mathematics.h"
#include "rational.h"
#include "integer.h"
#include "intfloat_readwrite.h"
#include "log.h"

/**
 * Pixel format. Notes:
 *
 * PIX_FMT_RGB32 is handled in an endian-specific manner. A RGBA
 * color is put together as:
 *  (A << 24) | (R << 16) | (G << 8) | B
 * This is stored as BGRA on little endian CPU architectures and ARGB on
 * big endian CPUs.
 *
 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
 * image data is stored in AVFrame.data[0]. The palette is transported in
 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
 * formatted the same as in PIX_FMT_RGB32 described above (i.e., it is
 * also endian-specific). Note also that the individual RGB palette
 * components stored in AVFrame.data[1] should be in the range 0..255.
 * This is important as many custom PAL8 video codecs that were designed
 * to run on the IBM VGA graphics adapter use 6-bit palette components.
 */
enum PixelFormat {
    PIX_FMT_NONE= -1,
    PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
    PIX_FMT_YUYV422,   ///< Packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
    PIX_FMT_RGB24,     ///< Packed RGB 8:8:8, 24bpp, RGBRGB...
    PIX_FMT_BGR24,     ///< Packed RGB 8:8:8, 24bpp, BGRBGR...
    PIX_FMT_YUV422P,   ///< Planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
    PIX_FMT_YUV444P,   ///< Planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
    PIX_FMT_RGB32,     ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8R 8G 8B(lsb), in cpu endianness
    PIX_FMT_YUV410P,   ///< Planar YUV 4:1:0,  9bpp, (1 Cr & Cb sample per 4x4 Y samples)
    PIX_FMT_YUV411P,   ///< Planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
    PIX_FMT_RGB565,    ///< Packed RGB 5:6:5, 16bpp, (msb)   5R 6G 5B(lsb), in cpu endianness
    PIX_FMT_RGB555,    ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), in cpu endianness most significant bit to 0
    PIX_FMT_GRAY8,     ///<        Y        ,  8bpp
    PIX_FMT_MONOWHITE, ///<        Y        ,  1bpp, 1 is white
    PIX_FMT_MONOBLACK, ///<        Y        ,  1bpp, 0 is black
    PIX_FMT_PAL8,      ///< 8 bit with PIX_FMT_RGB32 palette
    PIX_FMT_YUVJ420P,  ///< Planar YUV 4:2:0, 12bpp, full scale (jpeg)
    PIX_FMT_YUVJ422P,  ///< Planar YUV 4:2:2, 16bpp, full scale (jpeg)
    PIX_FMT_YUVJ444P,  ///< Planar YUV 4:4:4, 24bpp, full scale (jpeg)
    PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
    PIX_FMT_XVMC_MPEG2_IDCT,
    PIX_FMT_UYVY422,   ///< Packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
    PIX_FMT_UYYVYY411, ///< Packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
    PIX_FMT_BGR32,     ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8B 8G 8R(lsb), in cpu endianness
    PIX_FMT_BGR565,    ///< Packed RGB 5:6:5, 16bpp, (msb)   5B 6G 5R(lsb), in cpu endianness
    PIX_FMT_BGR555,    ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), in cpu endianness most significant bit to 1
    PIX_FMT_BGR8,      ///< Packed RGB 3:3:2,  8bpp, (msb)2B 3G 3R(lsb)
    PIX_FMT_BGR4,      ///< Packed RGB 1:2:1,  4bpp, (msb)1B 2G 1R(lsb)
    PIX_FMT_BGR4_BYTE, ///< Packed RGB 1:2:1,  8bpp, (msb)1B 2G 1R(lsb)
    PIX_FMT_RGB8,      ///< Packed RGB 3:3:2,  8bpp, (msb)2R 3G 3B(lsb)
    PIX_FMT_RGB4,      ///< Packed RGB 1:2:1,  4bpp, (msb)2R 3G 3B(lsb)
    PIX_FMT_RGB4_BYTE, ///< Packed RGB 1:2:1,  8bpp, (msb)2R 3G 3B(lsb)
    PIX_FMT_NV12,      ///< Planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 for UV
    PIX_FMT_NV21,      ///< as above, but U and V bytes are swapped

    PIX_FMT_RGB32_1,   ///< Packed RGB 8:8:8, 32bpp, (msb)8R 8G 8B 8A(lsb), in cpu endianness
    PIX_FMT_BGR32_1,   ///< Packed RGB 8:8:8, 32bpp, (msb)8B 8G 8R 8A(lsb), in cpu endianness

    PIX_FMT_GRAY16BE,  ///<        Y        , 16bpp, big-endian
    PIX_FMT_GRAY16LE,  ///<        Y        , 16bpp, little-endian
    PIX_FMT_NB,        ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
};

#ifdef WORDS_BIGENDIAN
#define PIX_FMT_RGBA PIX_FMT_RGB32_1
#define PIX_FMT_BGRA PIX_FMT_BGR32_1
#define PIX_FMT_ARGB PIX_FMT_RGB32
#define PIX_FMT_ABGR PIX_FMT_BGR32
#define PIX_FMT_GRAY16 PIX_FMT_GRAY16BE
#else
#define PIX_FMT_RGBA PIX_FMT_BGR32
#define PIX_FMT_BGRA PIX_FMT_RGB32
#define PIX_FMT_ARGB PIX_FMT_BGR32_1
#define PIX_FMT_ABGR PIX_FMT_RGB32_1
#define PIX_FMT_GRAY16 PIX_FMT_GRAY16LE
#endif

#if LIBAVUTIL_VERSION_INT < (50<<16)
#define PIX_FMT_UYVY411 PIX_FMT_UYYVYY411
#define PIX_FMT_RGBA32  PIX_FMT_RGB32
#define PIX_FMT_YUV422  PIX_FMT_YUYV422
#endif

#endif /* AVUTIL_H */