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mpv/video/img_format.h
Stefano Pigozzi a9cb2dc1b8 video: add vda decode support (with hwaccel) and direct rendering 
Decoding H264 using Video Decode Acceleration used the custom 'vda_h264_dec'
decoder in FFmpeg.

The Good: This new implementation has some advantages over the previous one:

 - It works with Libav: vda_h264_dec never got into Libav since they prefer
   client applications to use the hwaccel API.

 - It is way more efficient: in my tests this implementation yields a
   reduction of CPU usage of roughly ~50% compared to using `vda_h264_dec` and
   ~65-75% compared to h264 software decoding. This is mainly because
   `vo_corevideo` was adapted to perform direct rendering of the
   `CVPixelBufferRefs` created by the Video Decode Acceleration API Framework.

The Bad:
  - `vo_corevideo` is required to use VDA decoding acceleration.
  - only works with versions of ffmpeg/libav new enough (needs reference
    refcounting). That is FFmpeg 2.0+ and Libav's git master currently.

The Ugly: VDA was hardcoded to use UYVY (2vuy) for the uploaded video texture.
One one end this makes the code simple since Apple's OpenGL implementation
actually supports this out of the box. It would be nice to support other
output image formats and choose the best format depending on the input, or at
least making it configurable. My tests indicate that CPU usage actually
increases with a 420p IMGFMT output which is not what I would have expected.

NOTE: There is a small memory leak with old versions of FFmpeg and with Libav
since the CVPixelBufferRef is not automatically released when the AVFrame is
deallocated. This can cause leaks inside libavcodec for decoded frames that
are discarded before mpv wraps them inside a refcounted mp_image (this only
happens on seeks).
For frames that enter mpv's refcounting facilities, this is not a problem
since we rewrap the CVPixelBufferRef in our mp_image that properly forwards
CVPixelBufferRetain/CvPixelBufferRelease calls to the underying
CVPixelBufferRef.

So, for FFmpeg use something more recent than `b3d63995` for Libav the patch
was posted to the dev ML in July and in review since, apparently, the proposed
fix is rather hacky.
2013-08-22 12:13:30 +02:00

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/*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_IMG_FORMAT_H
#define MPLAYER_IMG_FORMAT_H
#include <inttypes.h>
#include <sys/types.h>
#include "mpvcore/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)
// 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)
const char *name; // e.g. "420p16"
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
// 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(unsigned int out_fmt);
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_LE,
IMGFMT_444P16_BE,
IMGFMT_444P14_LE,
IMGFMT_444P14_BE,
IMGFMT_444P12_LE,
IMGFMT_444P12_BE,
IMGFMT_444P10_LE,
IMGFMT_444P10_BE,
IMGFMT_444P9_LE,
IMGFMT_444P9_BE,
IMGFMT_422P16_LE,
IMGFMT_422P16_BE,
IMGFMT_422P14_LE,
IMGFMT_422P14_BE,
IMGFMT_422P12_LE,
IMGFMT_422P12_BE,
IMGFMT_422P10_LE,
IMGFMT_422P10_BE,
IMGFMT_422P9_LE,
IMGFMT_422P9_BE,
IMGFMT_420P16_LE,
IMGFMT_420P16_BE,
IMGFMT_420P14_LE,
IMGFMT_420P14_BE,
IMGFMT_420P12_LE,
IMGFMT_420P12_BE,
IMGFMT_420P10_LE,
IMGFMT_420P10_BE,
IMGFMT_420P9_LE,
IMGFMT_420P9_BE,
// Planar YUV with alpha (4th plane)
IMGFMT_444AP,
IMGFMT_422AP,
IMGFMT_420AP,
IMGFMT_444AP16_LE,
IMGFMT_444AP16_BE,
IMGFMT_444AP10_LE,
IMGFMT_444AP10_BE,
IMGFMT_444AP9_LE,
IMGFMT_444AP9_BE,
IMGFMT_422AP16_LE,
IMGFMT_422AP16_BE,
IMGFMT_422AP10_LE,
IMGFMT_422AP10_BE,
IMGFMT_422AP9_LE,
IMGFMT_422AP9_BE,
IMGFMT_420AP16_LE,
IMGFMT_420AP16_BE,
IMGFMT_420AP10_LE,
IMGFMT_420AP10_BE,
IMGFMT_420AP9_LE,
IMGFMT_420AP9_BE,
// Gray
IMGFMT_Y8,
IMGFMT_Y16_LE,
IMGFMT_Y16_BE,
// Gray with alpha (packed)
IMGFMT_YA8,
// 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_0RGB, // "0" is a padding byte (as opposed to alpha)
IMGFMT_BGRA,
IMGFMT_BGR0,
IMGFMT_ABGR,
IMGFMT_0BGR,
IMGFMT_RGBA,
IMGFMT_RGB0,
IMGFMT_BGR24, // 3 bytes per pixel
IMGFMT_RGB24,
IMGFMT_RGB48_LE, // 6 bytes per pixel, uint16_t channels
IMGFMT_RGB48_BE,
IMGFMT_RGBA64_LE, // 8 bytes per pixel, uint16_t channels
IMGFMT_RGBA64_BE,
IMGFMT_BGRA64_LE,
IMGFMT_BGRA64_BE,
// Accessed with bit-shifts (components ordered from LSB to MSB)
IMGFMT_RGB8, // r3 g3 b2
IMGFMT_BGR8,
IMGFMT_RGB4_BYTE, // r1 g2 b1 with 1 pixel per byte
IMGFMT_BGR4_BYTE,
IMGFMT_RGB4, // r1 g2 b1, bit-packed
IMGFMT_BGR4,
IMGFMT_MONO, // 1 bit per pixel, bit-packed
IMGFMT_MONO_W, // like IMGFMT_MONO, but inverted (white pixels)
// Accessed with bit-shifts after endian-swapping the uint16_t pixel
IMGFMT_RGB12_LE, // 4r 4g 4b 4a (LSB to MSB)
IMGFMT_RGB12_BE,
IMGFMT_RGB15_LE, // 5r 5g 5b 1a
IMGFMT_RGB15_BE,
IMGFMT_RGB16_LE, // 5r 6g 5b
IMGFMT_RGB16_BE,
IMGFMT_BGR12_LE, // 4b 4r 4g 4a
IMGFMT_BGR12_BE,
IMGFMT_BGR15_LE, // 5b 5g 5r 1a
IMGFMT_BGR15_BE,
IMGFMT_BGR16_LE, // 5b 6g 5r
IMGFMT_BGR16_BE,
// 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,
// Planar RGB (planes are shuffled: plane 0 is G, etc.)
IMGFMT_GBRP,
IMGFMT_GBRP9_LE, // similar organization to IMGFMT_444P9_LE
IMGFMT_GBRP9_BE,
IMGFMT_GBRP10_LE,
IMGFMT_GBRP10_BE,
IMGFMT_GBRP12_LE,
IMGFMT_GBRP12_BE,
IMGFMT_GBRP14_LE,
IMGFMT_GBRP14_BE,
IMGFMT_GBRP16_LE,
IMGFMT_GBRP16_BE,
// 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_LE,
IMGFMT_XYZ12_BE,
// Hardware accelerated formats. Plane data points to special data
// structures, instead of pixel data.
IMGFMT_VDPAU, // new decoder API
IMGFMT_VDPAU_MPEG1, // old API
IMGFMT_VDPAU_MPEG2,
IMGFMT_VDPAU_H264,
IMGFMT_VDPAU_WMV3,
IMGFMT_VDPAU_VC1,
IMGFMT_VDPAU_MPEG4,
IMGFMT_VDPAU_FIRST = IMGFMT_VDPAU,
IMGFMT_VDPAU_LAST = IMGFMT_VDPAU_MPEG4,
IMGFMT_VDA,
IMGFMT_VAAPI,
IMGFMT_VAAPI_MPEG2_IDCT,
IMGFMT_VAAPI_MPEG2_MOCO,
IMGFMT_VAAPI_FIRST = IMGFMT_VAAPI,
IMGFMT_VAAPI_LAST = IMGFMT_VAAPI_MPEG2_MOCO,
IMGFMT_END,
// Redundant format aliases for native endian access
// For all formats that have _LE/_BE, define a native-endian entry without
// the suffix.
// 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),
IMGFMT_RGB12 = MP_SELECT_LE_BE(IMGFMT_RGB12_LE, IMGFMT_RGB12_BE),
IMGFMT_RGB15 = MP_SELECT_LE_BE(IMGFMT_RGB15_LE, IMGFMT_RGB15_BE),
IMGFMT_RGB16 = MP_SELECT_LE_BE(IMGFMT_RGB16_LE, IMGFMT_RGB16_BE),
IMGFMT_BGR12 = MP_SELECT_LE_BE(IMGFMT_BGR12_LE, IMGFMT_BGR12_BE),
IMGFMT_BGR15 = MP_SELECT_LE_BE(IMGFMT_BGR15_LE, IMGFMT_BGR15_BE),
IMGFMT_BGR16 = MP_SELECT_LE_BE(IMGFMT_BGR16_LE, IMGFMT_BGR16_BE),
IMGFMT_RGB48 = MP_SELECT_LE_BE(IMGFMT_RGB48_LE, IMGFMT_RGB48_BE),
IMGFMT_RGBA64 = MP_SELECT_LE_BE(IMGFMT_RGBA64_LE, IMGFMT_RGBA64_BE),
IMGFMT_BGRA64 = MP_SELECT_LE_BE(IMGFMT_BGRA64_LE, IMGFMT_BGRA64_BE),
IMGFMT_444P16 = MP_SELECT_LE_BE(IMGFMT_444P16_LE, IMGFMT_444P16_BE),
IMGFMT_444P14 = MP_SELECT_LE_BE(IMGFMT_444P14_LE, IMGFMT_444P14_BE),
IMGFMT_444P12 = MP_SELECT_LE_BE(IMGFMT_444P12_LE, IMGFMT_444P12_BE),
IMGFMT_444P10 = MP_SELECT_LE_BE(IMGFMT_444P10_LE, IMGFMT_444P10_BE),
IMGFMT_444P9 = MP_SELECT_LE_BE(IMGFMT_444P9_LE, IMGFMT_444P9_BE),
IMGFMT_422P16 = MP_SELECT_LE_BE(IMGFMT_422P16_LE, IMGFMT_422P16_BE),
IMGFMT_422P14 = MP_SELECT_LE_BE(IMGFMT_422P14_LE, IMGFMT_422P14_BE),
IMGFMT_422P12 = MP_SELECT_LE_BE(IMGFMT_422P12_LE, IMGFMT_422P12_BE),
IMGFMT_422P10 = MP_SELECT_LE_BE(IMGFMT_422P10_LE, IMGFMT_422P10_BE),
IMGFMT_422P9 = MP_SELECT_LE_BE(IMGFMT_422P9_LE, IMGFMT_422P9_BE),
IMGFMT_420P16 = MP_SELECT_LE_BE(IMGFMT_420P16_LE, IMGFMT_420P16_BE),
IMGFMT_420P14 = MP_SELECT_LE_BE(IMGFMT_420P14_LE, IMGFMT_420P14_BE),
IMGFMT_420P12 = MP_SELECT_LE_BE(IMGFMT_420P12_LE, IMGFMT_420P12_BE),
IMGFMT_420P10 = MP_SELECT_LE_BE(IMGFMT_420P10_LE, IMGFMT_420P10_BE),
IMGFMT_420P9 = MP_SELECT_LE_BE(IMGFMT_420P9_LE, IMGFMT_420P9_BE),
IMGFMT_444AP16 = MP_SELECT_LE_BE(IMGFMT_444AP16_LE, IMGFMT_444AP16_BE),
IMGFMT_444AP10 = MP_SELECT_LE_BE(IMGFMT_444AP10_LE, IMGFMT_444AP10_BE),
IMGFMT_444AP9 = MP_SELECT_LE_BE(IMGFMT_444AP9_LE, IMGFMT_444AP9_BE),
IMGFMT_422AP16 = MP_SELECT_LE_BE(IMGFMT_422AP16_LE, IMGFMT_422AP16_BE),
IMGFMT_422AP10 = MP_SELECT_LE_BE(IMGFMT_422AP10_LE, IMGFMT_422AP10_BE),
IMGFMT_422AP9 = MP_SELECT_LE_BE(IMGFMT_422AP9_LE, IMGFMT_422AP9_BE),
IMGFMT_420AP16 = MP_SELECT_LE_BE(IMGFMT_420AP16_LE, IMGFMT_420AP16_BE),
IMGFMT_420AP10 = MP_SELECT_LE_BE(IMGFMT_420AP10_LE, IMGFMT_420AP10_BE),
IMGFMT_420AP9 = MP_SELECT_LE_BE(IMGFMT_420AP9_LE, IMGFMT_420AP9_BE),
IMGFMT_Y16 = MP_SELECT_LE_BE(IMGFMT_Y16_LE, IMGFMT_Y16_BE),
IMGFMT_GBRP9 = MP_SELECT_LE_BE(IMGFMT_GBRP9_LE, IMGFMT_GBRP9_BE),
IMGFMT_GBRP10 = MP_SELECT_LE_BE(IMGFMT_GBRP10_LE, IMGFMT_GBRP10_BE),
IMGFMT_GBRP12 = MP_SELECT_LE_BE(IMGFMT_GBRP12_LE, IMGFMT_GBRP12_BE),
IMGFMT_GBRP14 = MP_SELECT_LE_BE(IMGFMT_GBRP14_LE, IMGFMT_GBRP14_BE),
IMGFMT_GBRP16 = MP_SELECT_LE_BE(IMGFMT_GBRP16_LE, IMGFMT_GBRP16_BE),
IMGFMT_XYZ12 = MP_SELECT_LE_BE(IMGFMT_XYZ12_LE, IMGFMT_XYZ12_BE),
};
static inline bool IMGFMT_IS_RGB(unsigned 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_VDPAU(fmt) \
(((fmt) >= IMGFMT_VDPAU_FIRST) && ((fmt) <= IMGFMT_VDPAU_LAST))
#define IMGFMT_IS_VDA(fmt) (((fmt) == IMGFMT_VDA))
#define IMGFMT_IS_VAAPI(fmt) \
(((fmt) >= IMGFMT_VAAPI_FIRST) && ((fmt) <= IMGFMT_VAAPI_LAST))
#define IMGFMT_IS_HWACCEL(fmt) \
(IMGFMT_IS_VDPAU(fmt) || IMGFMT_IS_VAAPI(fmt) || IMGFMT_IS_VDA(fmt))
struct mp_imgfmt_entry {
const char *name;
unsigned int fmt;
};
extern struct mp_imgfmt_entry mp_imgfmt_list[];
unsigned int mp_imgfmt_from_name(bstr name, bool allow_hwaccel);
const char *mp_imgfmt_to_name(unsigned int fmt);
#define vo_format_name mp_imgfmt_to_name
int mp_imgfmt_find_yuv_planar(int xs, int ys, int planes, int component_bits);
#endif /* MPLAYER_IMG_FORMAT_H */
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