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/*
* This file is part of mpv.
*
* Copyright (c) 2015 Sebastien Zwickert
*
* mpv 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.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libavcodec/version.h>
#include <libavcodec/videotoolbox.h>
#include "common/av_common.h"
#include "common/msg.h"
#include "video/mp_image.h"
#include "video/decode/lavc.h"
#include "config.h"
static int probe(struct lavc_ctx *ctx, struct vd_lavc_hwdec *hwdec,
const char *codec)
{
if (!hwdec_devices_load(ctx->hwdec_devs, HWDEC_VIDEOTOOLBOX))
return HWDEC_ERR_NO_CTX;
switch (mp_codec_to_av_codec_id(codec)) {
case AV_CODEC_ID_H264:
case AV_CODEC_ID_H263:
case AV_CODEC_ID_MPEG1VIDEO:
case AV_CODEC_ID_MPEG2VIDEO:
case AV_CODEC_ID_MPEG4:
break;
default:
return HWDEC_ERR_NO_CODEC;
}
return 0;
}
static int init(struct lavc_ctx *ctx)
{
return 0;
}
struct videotoolbox_error {
int code;
char *reason;
};
static const struct videotoolbox_error videotoolbox_errors[] = {
{ AVERROR(ENOSYS),
"Hardware doesn't support accelerated decoding for this stream"
" or Videotoolbox decoder is not available at the moment (another"
" application is using it)."
},
{ AVERROR(EINVAL),
"Invalid configuration provided to VTDecompressionSessionCreate" },
{ AVERROR_INVALIDDATA,
"Generic error returned by the decoder layer. The cause can be Videotoolbox"
" found errors in the bitstream." },
{ 0, NULL },
};
static void print_videotoolbox_error(struct mp_log *log, int lev, char *message,
int error_code)
{
for (int n = 0; videotoolbox_errors[n].code < 0; n++)
if (videotoolbox_errors[n].code == error_code) {
mp_msg(log, lev, "%s: %s (%d)\n",
message, videotoolbox_errors[n].reason, error_code);
return;
}
mp_msg(log, lev, "%s: %d\n", message, error_code);
}
static int init_decoder(struct lavc_ctx *ctx, int w, int h)
{
av_videotoolbox_default_free(ctx->avctx);
AVVideotoolboxContext *vtctx = av_videotoolbox_alloc_context();
struct mp_vt_ctx *vt = hwdec_devices_load(ctx->hwdec_devs, HWDEC_VIDEOTOOLBOX);
vtctx->cv_pix_fmt_type = vt->get_vt_fmt(vt);
int err = av_videotoolbox_default_init2(ctx->avctx, vtctx);
if (err < 0) {
print_videotoolbox_error(ctx->log, MSGL_ERR, "failed to init videotoolbox decoder", err);
return -1;
}
return 0;
}
static void uninit(struct lavc_ctx *ctx)
{
if (ctx->avctx)
av_videotoolbox_default_free(ctx->avctx);
}
static struct mp_image *process_image(struct lavc_ctx *ctx, struct mp_image *img)
{
if (img->imgfmt == IMGFMT_VIDEOTOOLBOX) {
CVPixelBufferRef pbuf = (CVPixelBufferRef)img->planes[3];
img->params.hw_subfmt = CVPixelBufferGetPixelFormatType(pbuf);
}
return img;
}
const struct vd_lavc_hwdec mp_vd_lavc_videotoolbox = {
.type = HWDEC_VIDEOTOOLBOX,
.image_format = IMGFMT_VIDEOTOOLBOX,
.probe = probe,
.init = init,
.uninit = uninit,
.init_decoder = init_decoder,
.process_image = process_image,
};
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