mirror of
https://github.com/mpv-player/mpv
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5258c012fe
The hardware always decodes to nv12 so using this image format causes less cpu usage than uyvy (which we are currently using, since Apple examples and other free software use that). The reduction in cpu usage can add up to quite a bit, especially for 4k or high fps video. This needs an accompaning commit in libavcodec.
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/*
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* This file is part of mpv.
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*
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* Copyright (c) 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libavcodec/version.h>
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#include <libavcodec/vda.h>
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#include "common/av_common.h"
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#include "common/msg.h"
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#include "video/mp_image.h"
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#include "video/decode/lavc.h"
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#include "config.h"
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static int probe(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
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const char *decoder)
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{
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hwdec_request_api(info, "vda");
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if (!info || !info->hwctx)
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return HWDEC_ERR_NO_CTX;
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if (mp_codec_to_av_codec_id(decoder) != AV_CODEC_ID_H264)
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return HWDEC_ERR_NO_CODEC;
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return 0;
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}
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static int init(struct lavc_ctx *ctx)
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{
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return 0;
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}
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struct vda_error {
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int code;
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char *reason;
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};
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static const struct vda_error vda_errors[] = {
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{ AVERROR(ENOSYS),
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"Hardware doesn't support accelerated decoding for this stream" },
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{ AVERROR(EINVAL),
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"Invalid configuration provided to VDADecoderCreate" },
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{ AVERROR_INVALIDDATA,
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"Generic error returned by the decoder layer. The cause can range from"
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" VDADecoder finding errors in the bitstream to another application"
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" using VDA at the moment. Only one application can use VDA at a"
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" givent time." },
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{ 0, NULL },
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};
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static void print_vda_error(struct mp_log *log, int lev, char *message,
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int error_code)
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{
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for (int n = 0; vda_errors[n].code < 0; n++)
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if (vda_errors[n].code == error_code) {
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mp_msg(log, lev, "%s: %s (%d)\n",
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message, vda_errors[n].reason, error_code);
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return;
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}
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mp_msg(log, lev, "%s: %d\n", message, error_code);
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}
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static int init_decoder(struct lavc_ctx *ctx, int fmt, int w, int h)
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{
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av_vda_default_free(ctx->avctx);
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#if HAVE_VDA_DEFAULT_INIT2
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AVVDAContext *vdactx = av_vda_alloc_context();
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vdactx->cv_pix_fmt_type = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
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int err = av_vda_default_init2(ctx->avctx, vdactx);
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#else
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int err = av_vda_default_init(ctx->avctx);
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#endif
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if (err < 0) {
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print_vda_error(ctx->log, MSGL_ERR, "failed to init VDA decoder", err);
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return -1;
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}
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return 0;
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}
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static void uninit(struct lavc_ctx *ctx)
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{
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if (ctx->avctx)
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av_vda_default_free(ctx->avctx);
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}
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const struct vd_lavc_hwdec mp_vd_lavc_vda = {
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.type = HWDEC_VDA,
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.image_format = IMGFMT_VDA,
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.probe = probe,
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.init = init,
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.uninit = uninit,
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.init_decoder = init_decoder,
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};
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