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mpv/video/img_format.h

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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MPLAYER_IMG_FORMAT_H
#define MPLAYER_IMG_FORMAT_H
#include <inttypes.h>
#include "osdep/endian.h"
#include "misc/bstr.h"
#if BYTE_ORDER == BIG_ENDIAN
#define MP_SELECT_LE_BE(LE, BE) BE
#else
#define MP_SELECT_LE_BE(LE, BE) LE
#endif
#define MP_MAX_PLANES 4
// All pixels start in byte boundaries
#define MP_IMGFLAG_BYTE_ALIGNED 0x1
// set if (possibly) alpha is included (might be not definitive for packed RGB)
#define MP_IMGFLAG_ALPHA 0x80
// Uses one component per plane (set even if it's just one plane)
#define MP_IMGFLAG_PLANAR 0x100
// set if it's YUV colorspace
#define MP_IMGFLAG_YUV 0x200
// set if it's RGB colorspace
#define MP_IMGFLAG_RGB 0x400
// set if it's XYZ colorspace
#define MP_IMGFLAG_XYZ 0x800
// set if the format is in a standard YUV format:
// - planar and yuv colorspace
// - chroma shift 0-2
// - 1-4 planes (1: gray, 2: gray/alpha, 3: yuv, 4: yuv/alpha)
// - 8-16 bit per pixel/plane, all planes have same depth,
// each plane has exactly one component
#define MP_IMGFLAG_YUV_P 0x1000
// set if in little endian, or endian independent
#define MP_IMGFLAG_LE 0x2000
// set if in big endian, or endian independent
#define MP_IMGFLAG_BE 0x4000
// set if in native (host) endian, or endian independent
#define MP_IMGFLAG_NE MP_SELECT_LE_BE(MP_IMGFLAG_LE, MP_IMGFLAG_BE)
// Carries a palette in plane[1] (see IMGFMT_PAL8 for format of the palette).
// Note that some non-paletted formats have this flag set, because FFmpeg
// mysteriously expects some formats to carry a palette plane for no apparent
// reason. FFmpeg developer braindeath?
// The only real paletted format we support is IMGFMT_PAL8, so check for that
// format directly if you want an actual paletted format.
#define MP_IMGFLAG_PAL 0x8000
// planes don't contain real data; planes[3] contains an API-specific pointer
#define MP_IMGFLAG_HWACCEL 0x10000
// Set if the chroma resolution is lower than luma resolution. Unset for non-YUV.
#define MP_IMGFLAG_SUBSAMPLED 0x20000
// Like MP_IMGFLAG_YUV_P, but RGB. This can be e.g. AV_PIX_FMT_GBRP. The planes
// are always shuffled (G - B - R [- A]).
#define MP_IMGFLAG_RGB_P 0x40000
// Semi-planar YUV formats, like AV_PIX_FMT_NV12.
// The flag MP_IMGFLAG_YUV_NV_SWAP is set for AV_PIX_FMT_NV21.
#define MP_IMGFLAG_YUV_NV 0x80000
#define MP_IMGFLAG_YUV_NV_SWAP 0x100000
// Exactly one of these bits is set in mp_imgfmt_desc.flags
#define MP_IMGFLAG_COLOR_CLASS_MASK \
(MP_IMGFLAG_YUV | MP_IMGFLAG_RGB | MP_IMGFLAG_XYZ)
struct mp_imgfmt_desc {
int id; // IMGFMT_*
int avformat; // AV_PIX_FMT_* (or AV_PIX_FMT_NONE)
int flags; // MP_IMGFLAG_* bitfield
int8_t num_planes;
int8_t chroma_xs, chroma_ys; // chroma shift (i.e. log2 of chroma pixel size)
int8_t align_x, align_y; // pixel size to get byte alignment and to get
// to a pixel pos where luma & chroma aligns
int8_t bytes[MP_MAX_PLANES]; // bytes per pixel (MP_IMGFLAG_BYTE_ALIGNED)
int8_t bpp[MP_MAX_PLANES]; // bits per pixel
int8_t plane_bits; // number of bits in use for plane 0
int8_t component_bits; // number of bits per component (0 if uneven)
int8_t component_full_bits; // number of bits per component including
// internal padding (0 if uneven)
int8_t components[MP_MAX_PLANES]; // number of components for each plane
// chroma shifts per plane (provided for convenience with planar formats)
int8_t xs[MP_MAX_PLANES];
int8_t ys[MP_MAX_PLANES];
};
struct mp_imgfmt_desc mp_imgfmt_get_desc(int imgfmt);
enum mp_imgfmt {
IMGFMT_NONE = 0,
// Offset to make confusing with ffmpeg formats harder
IMGFMT_START = 1000,
// Planar YUV formats
IMGFMT_444P, // 1x1
IMGFMT_422P, // 2x1
IMGFMT_440P, // 1x2
IMGFMT_420P, // 2x2
IMGFMT_411P, // 4x1
IMGFMT_410P, // 4x4
// YUV formats with 2 bytes per plane-pixel. Formats with 9-15 bits pad the
// most significant bits with 0 (use shifts to expand them to 16 bits).
IMGFMT_444P16,
IMGFMT_444P14,
IMGFMT_444P12,
IMGFMT_444P10,
IMGFMT_444P9,
IMGFMT_422P16,
IMGFMT_422P14,
IMGFMT_422P12,
IMGFMT_422P10,
IMGFMT_422P9,
IMGFMT_420P16,
IMGFMT_420P14,
IMGFMT_420P12,
IMGFMT_420P10,
IMGFMT_420P9,
// Planar YUV with alpha (4th plane)
IMGFMT_444AP,
IMGFMT_422AP,
IMGFMT_420AP,
// Gray
IMGFMT_Y8,
IMGFMT_Y16,
// Gray with alpha (packed)
IMGFMT_YA8,
IMGFMT_YA16,
// Packed YUV formats (components are byte-accessed)
IMGFMT_YUYV, // Y0 U Y1 V
IMGFMT_UYVY, // U Y0 V Y1
// Y plane + packed plane for chroma
IMGFMT_NV12,
IMGFMT_NV21,
// RGB/BGR Formats
// Byte accessed (low address to high address)
IMGFMT_ARGB,
IMGFMT_BGRA,
IMGFMT_ABGR,
IMGFMT_RGBA,
IMGFMT_BGR24, // 3 bytes per pixel
IMGFMT_RGB24,
IMGFMT_RGB48, // 6 bytes per pixel, uint16_t channels
IMGFMT_RGBA64, // 8 bytes per pixel, uint16_t channels
IMGFMT_BGRA64,
// Like e.g. IMGFMT_ARGB, but has a padding byte instead of alpha
IMGFMT_0RGB,
IMGFMT_BGR0,
IMGFMT_0BGR,
IMGFMT_RGB0,
IMGFMT_RGB0_START = IMGFMT_0RGB,
IMGFMT_RGB0_END = IMGFMT_RGB0,
// Accessed with bit-shifts after endian-swapping the uint16_t pixel
IMGFMT_RGB565, // 5r 6g 5b (MSB to LSB)
// The first plane has 1 byte per pixel. The second plane is a palette with
// 256 entries, with each entry encoded like in IMGFMT_BGR32.
IMGFMT_PAL8,
// XYZ colorspace, similar organization to RGB48. Even though it says "12",
// the components are stored as 16 bit, with lower 4 bits set to 0.
IMGFMT_XYZ12,
// Hardware accelerated formats. Plane data points to special data
// structures, instead of pixel data.
IMGFMT_VDPAU, // VdpVideoSurface
IMGFMT_VDPAU_OUTPUT, // VdpOutputSurface
IMGFMT_VAAPI,
IMGFMT_DXVA2, // IDirect3DSurface9 (NV12)
IMGFMT_MMAL, // MMAL_BUFFER_HEADER_T
IMGFMT_VIDEOTOOLBOX, // CVPixelBufferRef
// Generic pass-through of AV_PIX_FMT_*. Used for formats which don't have
// a corresponding IMGFMT_ value.
IMGFMT_AVPIXFMT_START,
IMGFMT_AVPIXFMT_END = IMGFMT_AVPIXFMT_START + 500,
IMGFMT_END,
// Redundant format aliases for native endian access
// The IMGFMT_RGB32 and IMGFMT_BGR32 formats provide bit-shift access to
// normally byte-accessed formats:
// IMGFMT_RGB32 = r | (g << 8) | (b << 16) | (a << 24)
// IMGFMT_BGR32 = b | (g << 8) | (r << 16) | (a << 24)
IMGFMT_RGB32 = MP_SELECT_LE_BE(IMGFMT_RGBA, IMGFMT_ABGR),
IMGFMT_BGR32 = MP_SELECT_LE_BE(IMGFMT_BGRA, IMGFMT_ARGB),
};
static inline bool IMGFMT_IS_RGB(int fmt)
{
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(fmt);
return (desc.flags & MP_IMGFLAG_RGB) && desc.num_planes == 1;
}
#define IMGFMT_RGB_DEPTH(fmt) (mp_imgfmt_get_desc(fmt).plane_bits)
#define IMGFMT_IS_HWACCEL(fmt) (mp_imgfmt_get_desc(fmt).flags & MP_IMGFLAG_HWACCEL)
int mp_imgfmt_from_name(bstr name, bool allow_hwaccel);
char *mp_imgfmt_to_name_buf(char *buf, size_t buf_size, int fmt);
#define mp_imgfmt_to_name(fmt) mp_imgfmt_to_name_buf((char[16]){0}, 16, (fmt))
char **mp_imgfmt_name_list(void);
#define vo_format_name mp_imgfmt_to_name
int mp_imgfmt_find(int xs, int ys, int planes, int component_bits, int flags);
int mp_imgfmt_select_best(int dst1, int dst2, int src);
#endif /* MPLAYER_IMG_FORMAT_H */
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