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/*
* This file is part of mpv.
*
* Copyright (c) 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
*
* 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/>.
*/
#include <libavcodec/version.h>
#include <libavcodec/vda.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 vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
const char *decoder)
{
hwdec_request_api(info, "videotoolbox");
if (!info || !info->hwctx)
return HWDEC_ERR_NO_CTX;
if (mp_codec_to_av_codec_id(decoder) != AV_CODEC_ID_H264)
return HWDEC_ERR_NO_CODEC;
return 0;
}
static int init(struct lavc_ctx *ctx)
{
return 0;
}
struct vda_error {
int code;
char *reason;
};
static const struct vda_error vda_errors[] = {
{ AVERROR(ENOSYS),
"Hardware doesn't support accelerated decoding for this stream" },
{ AVERROR(EINVAL),
"Invalid configuration provided to VDADecoderCreate" },
{ AVERROR_INVALIDDATA,
"Generic error returned by the decoder layer. The cause can range from"
" VDADecoder finding errors in the bitstream to another application"
" using VDA at the moment. Only one application can use VDA at a"
" givent time." },
{ 0, NULL },
};
static void print_vda_error(struct mp_log *log, int lev, char *message,
int error_code)
{
for (int n = 0; vda_errors[n].code < 0; n++)
if (vda_errors[n].code == error_code) {
mp_msg(log, lev, "%s: %s (%d)\n",
message, vda_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_vda_default_free(ctx->avctx);
#if HAVE_VDA_DEFAULT_INIT2
AVVDAContext *vdactx = av_vda_alloc_context();
vdactx->cv_pix_fmt_type = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
int err = av_vda_default_init2(ctx->avctx, vdactx);
#else
int err = av_vda_default_init(ctx->avctx);
#endif
if (err < 0) {
print_vda_error(ctx->log, MSGL_ERR, "failed to init VDA decoder", err);
return -1;
}
return 0;
}
static void uninit(struct lavc_ctx *ctx)
{
if (ctx->avctx)
av_vda_default_free(ctx->avctx);
}
static struct mp_image *process_image(struct lavc_ctx *ctx, struct mp_image *img)
{
// Same representation. IMGFMT_VDA is only needed to select the libavcodec
// hwaccel driver.
if (img->imgfmt == IMGFMT_VDA)
mp_image_setfmt(img, IMGFMT_VIDEOTOOLBOX);
return img;
}
const struct vd_lavc_hwdec mp_vd_lavc_vda = {
.type = HWDEC_VDA,
.image_format = IMGFMT_VDA,
.probe = probe,
.init = init,
.uninit = uninit,
.init_decoder = init_decoder,
.process_image = process_image,
};
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