third_party_ffmpeg/libavcodec/libvpx.c
Vignesh Venkatasubramanian acca56d962 libvpx: Enable vp9 alpha encoding
Chrome canary now supports decoding of VP9 streams with alpha
channel [1]. Add support to ffmpeg for creating such files.

[1] https://codereview.chromium.org/2096813002/

Reviewed-by: James Zern <jzern@google.com>
Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
2016-07-12 23:19:50 -07:00

148 lines
5.2 KiB
C

/*
* Copyright (c) 2013 Guillaume Martres <smarter@ubuntu.com>
*
* 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
*/
#include <vpx/vpx_codec.h>
#include "libvpx.h"
#include "config.h"
#if CONFIG_LIBVPX_VP9_ENCODER
#include <vpx/vpx_encoder.h>
#include <vpx/vp8cx.h>
#endif
static const enum AVPixelFormat vp9_pix_fmts_def[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_NONE
};
#if CONFIG_LIBVPX_VP9_ENCODER
static const enum AVPixelFormat vp9_pix_fmts_highcol[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV440P,
AV_PIX_FMT_YUV444P,
#if VPX_IMAGE_ABI_VERSION >= 3
AV_PIX_FMT_GBRP,
#endif
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat vp9_pix_fmts_highbd[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV440P,
AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUV420P10,
AV_PIX_FMT_YUV422P10,
AV_PIX_FMT_YUV440P10,
AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV420P12,
AV_PIX_FMT_YUV422P12,
AV_PIX_FMT_YUV440P12,
AV_PIX_FMT_YUV444P12,
#if VPX_IMAGE_ABI_VERSION >= 3
AV_PIX_FMT_GBRP,
AV_PIX_FMT_GBRP10,
AV_PIX_FMT_GBRP12,
#endif
AV_PIX_FMT_NONE
};
#endif
av_cold void ff_vp9_init_static(AVCodec *codec)
{
if ( vpx_codec_version_major() < 1
|| (vpx_codec_version_major() == 1 && vpx_codec_version_minor() < 3))
codec->capabilities |= AV_CODEC_CAP_EXPERIMENTAL;
codec->pix_fmts = vp9_pix_fmts_def;
#if CONFIG_LIBVPX_VP9_ENCODER
if ( vpx_codec_version_major() > 1
|| (vpx_codec_version_major() == 1 && vpx_codec_version_minor() >= 4)) {
#ifdef VPX_CODEC_CAP_HIGHBITDEPTH
vpx_codec_caps_t codec_caps = vpx_codec_get_caps(vpx_codec_vp9_cx());
if (codec_caps & VPX_CODEC_CAP_HIGHBITDEPTH)
codec->pix_fmts = vp9_pix_fmts_highbd;
else
#endif
codec->pix_fmts = vp9_pix_fmts_highcol;
}
#endif
}
#if 0
enum AVPixelFormat ff_vpx_imgfmt_to_pixfmt(vpx_img_fmt_t img)
{
switch (img) {
case VPX_IMG_FMT_RGB24: return AV_PIX_FMT_RGB24;
case VPX_IMG_FMT_RGB565: return AV_PIX_FMT_RGB565BE;
case VPX_IMG_FMT_RGB555: return AV_PIX_FMT_RGB555BE;
case VPX_IMG_FMT_UYVY: return AV_PIX_FMT_UYVY422;
case VPX_IMG_FMT_YUY2: return AV_PIX_FMT_YUYV422;
case VPX_IMG_FMT_YVYU: return AV_PIX_FMT_YVYU422;
case VPX_IMG_FMT_BGR24: return AV_PIX_FMT_BGR24;
case VPX_IMG_FMT_ARGB: return AV_PIX_FMT_ARGB;
case VPX_IMG_FMT_ARGB_LE: return AV_PIX_FMT_BGRA;
case VPX_IMG_FMT_RGB565_LE: return AV_PIX_FMT_RGB565LE;
case VPX_IMG_FMT_RGB555_LE: return AV_PIX_FMT_RGB555LE;
case VPX_IMG_FMT_I420: return AV_PIX_FMT_YUV420P;
case VPX_IMG_FMT_I422: return AV_PIX_FMT_YUV422P;
case VPX_IMG_FMT_I444: return AV_PIX_FMT_YUV444P;
case VPX_IMG_FMT_444A: return AV_PIX_FMT_YUVA444P;
#if VPX_IMAGE_ABI_VERSION >= 3
case VPX_IMG_FMT_I440: return AV_PIX_FMT_YUV440P;
case VPX_IMG_FMT_I42016: return AV_PIX_FMT_YUV420P16BE;
case VPX_IMG_FMT_I42216: return AV_PIX_FMT_YUV422P16BE;
case VPX_IMG_FMT_I44416: return AV_PIX_FMT_YUV444P16BE;
#endif
default: return AV_PIX_FMT_NONE;
}
}
vpx_img_fmt_t ff_vpx_pixfmt_to_imgfmt(enum AVPixelFormat pix)
{
switch (pix) {
case AV_PIX_FMT_RGB24: return VPX_IMG_FMT_RGB24;
case AV_PIX_FMT_RGB565BE: return VPX_IMG_FMT_RGB565;
case AV_PIX_FMT_RGB555BE: return VPX_IMG_FMT_RGB555;
case AV_PIX_FMT_UYVY422: return VPX_IMG_FMT_UYVY;
case AV_PIX_FMT_YUYV422: return VPX_IMG_FMT_YUY2;
case AV_PIX_FMT_YVYU422: return VPX_IMG_FMT_YVYU;
case AV_PIX_FMT_BGR24: return VPX_IMG_FMT_BGR24;
case AV_PIX_FMT_ARGB: return VPX_IMG_FMT_ARGB;
case AV_PIX_FMT_BGRA: return VPX_IMG_FMT_ARGB_LE;
case AV_PIX_FMT_RGB565LE: return VPX_IMG_FMT_RGB565_LE;
case AV_PIX_FMT_RGB555LE: return VPX_IMG_FMT_RGB555_LE;
case AV_PIX_FMT_YUV420P: return VPX_IMG_FMT_I420;
case AV_PIX_FMT_YUV422P: return VPX_IMG_FMT_I422;
case AV_PIX_FMT_YUV444P: return VPX_IMG_FMT_I444;
case AV_PIX_FMT_YUVA444P: return VPX_IMG_FMT_444A;
#if VPX_IMAGE_ABI_VERSION >= 3
case AV_PIX_FMT_YUV440P: return VPX_IMG_FMT_I440;
case AV_PIX_FMT_YUV420P16BE: return VPX_IMG_FMT_I42016;
case AV_PIX_FMT_YUV422P16BE: return VPX_IMG_FMT_I42216;
case AV_PIX_FMT_YUV444P16BE: return VPX_IMG_FMT_I44416;
#endif
default: return VPX_IMG_FMT_NONE;
}
}
#endif