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https://github.com/mpv-player/mpv
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64d56114ed
Can be enabled via --vd-lavc-dr=yes. See manpage additions for what it does. This reminds of the MPlayer -dr flag, but the implementation is completely different. It's the same basic concept: letting the decoder render into a GPU buffer to avoid a copy. Unlike MPlayer, this doesn't try to go through filters (libavfilter doesn't support this anyway). Unless a filter can work in-place, DR will be silently disabled. MPlayer had very complex semantics about buffer types and management (which apparently nobody ever understood) and weird restrictions that mostly limited it to mpeg2 style codecs. The mpv code does not do any of this, and just lets the decoder allocate an arbitrary number of untyped images. (No MPlayer code was used.) Parts of the code based on work by atomnuker (starting point for the generic code) and haasn (some GL definitions, some basic PBO code, and correct fencing).
103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
/*
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* This file is part of mpv.
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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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* Almost LGPL.
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*/
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#ifndef MPLAYER_DEC_VIDEO_H
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#define MPLAYER_DEC_VIDEO_H
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#include <stdbool.h>
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#include "demux/stheader.h"
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#include "video/hwdec.h"
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#include "video/mp_image.h"
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struct mp_decoder_list;
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struct vo;
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struct dec_video {
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struct mp_log *log;
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struct mpv_global *global;
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struct MPOpts *opts;
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const struct vd_functions *vd_driver;
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struct mp_hwdec_devices *hwdec_devs; // video output hwdec handles
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struct sh_stream *header;
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struct mp_codec_params *codec;
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struct vo *vo; // required for direct rendering into video memory
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char *decoder_desc;
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float fps; // FPS from demuxer or from user override
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int dropped_frames;
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struct mp_recorder_sink *recorder_sink;
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// Internal (shared with vd_lavc.c).
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void *priv; // for free use by vd_driver
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// Strictly internal (dec_video.c).
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// Last PTS from decoder (set with each vd_driver->decode() call)
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double codec_pts;
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int num_codec_pts_problems;
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// Last packet DTS from decoder (passed through from source packets)
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double codec_dts;
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int num_codec_dts_problems;
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// PTS or DTS of packet first read
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double first_packet_pdts;
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// There was at least one packet with non-sense timestamps.
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int has_broken_packet_pts; // <0: uninitialized, 0: no problems, 1: broken
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int has_broken_decoded_pts;
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// Final PTS of previously decoded image
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double decoded_pts;
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struct mp_image_params dec_format, last_format, fixed_format;
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double start_pts;
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double start, end;
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struct demux_packet *new_segment;
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struct demux_packet *packet;
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bool framedrop_enabled;
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struct mp_image *current_mpi;
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int current_state;
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};
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struct mp_decoder_list *video_decoder_list(void);
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bool video_init_best_codec(struct dec_video *d_video);
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void video_uninit(struct dec_video *d_video);
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void video_work(struct dec_video *d_video);
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int video_get_frame(struct dec_video *d_video, struct mp_image **out_mpi);
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void video_set_framedrop(struct dec_video *d_video, bool enabled);
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void video_set_start(struct dec_video *d_video, double start_pts);
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int video_vd_control(struct dec_video *d_video, int cmd, void *arg);
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void video_reset(struct dec_video *d_video);
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void video_reset_params(struct dec_video *d_video);
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void video_get_dec_params(struct dec_video *d_video, struct mp_image_params *p);
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#endif /* MPLAYER_DEC_VIDEO_H */
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