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https://github.com/mpv-player/mpv
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4d016a92c8
Use codec names instead of FourCCs to identify codecs. Rewrite how codecs are selected and initialized. Now each decoder exports a list of decoders (and the codec it supports) via add_decoders(). The order matters, and the first decoder for a given decoder is preferred over the other decoders. E.g. all ad_mpg123 decoders are preferred over ad_lavc, because it comes first in the mpcodecs_ad_drivers array. Likewise, decoders within ad_lavc that are enumerated first by libavcodec (using av_codec_next()) are preferred. (This is actually critical to select h264 software decoding by default instead of vdpau. libavcodec and ffmpeg/avconv use the same method to select decoders by default, so we hope this is sane.) The codec names follow libavcodec's codec names as defined by AVCodecDescriptor.name (see libavcodec/codec_desc.c). Some decoders have names different from the canonical codec name. The AVCodecDescriptor API is relatively new, so we need a compatibility layer for older libavcodec versions for codec names that are referenced internally, and which are different from the decoder name. (Add a configure check for that, because checking versions is getting way too messy.) demux/codec_tags.c is generated from the former codecs.conf (minus "special" decoders like vdpau, and excluding the mappings that are the same as the mappings libavformat's exported RIFF tables). It contains all the mappings from FourCCs to codec name. This is needed for demux_mkv, demux_mpg, demux_avi and demux_asf. demux_lavf will set the codec as determined by libavformat, while the other demuxers have to do this on their own, using the mp_set_audio/video_codec_from_tag() functions. Note that the sh_audio/video->format members don't uniquely identify the codec anymore, and sh->codec takes over this role. Replace the --ac/--vc/--afm/--vfm with new --vd/--ad options, which provide cover the functionality of the removed switched. Note: there's no CODECS_FLAG_FLIP flag anymore. This means some obscure container/video combinations (e.g. the sample Film_200_zygo_pro.mov) are played flipped. ffplay/avplay doesn't handle this properly either, so we don't care and blame ffmeg/libav instead.
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer 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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* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_AD_H
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#define MPLAYER_AD_H
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#include "core/codecs.h"
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#include "demux/stheader.h"
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typedef struct mp_codec_info ad_info_t;
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struct mp_decoder_list;
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/* interface of video decoder drivers */
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typedef struct ad_functions
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{
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const char *name;
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void (*add_decoders)(struct mp_decoder_list *list);
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int (*preinit)(sh_audio_t *sh);
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int (*init)(sh_audio_t *sh, const char *decoder);
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void (*uninit)(sh_audio_t *sh);
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int (*control)(sh_audio_t *sh,int cmd,void* arg, ...);
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int (*decode_audio)(sh_audio_t *sh, unsigned char *buffer, int minlen,
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int maxlen);
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} ad_functions_t;
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// NULL terminated array of all drivers
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extern const ad_functions_t * const mpcodecs_ad_drivers[];
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// fallback if ADCTRL_RESYNC not implemented: sh_audio->a_in_buffer_len=0;
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#define ADCTRL_RESYNC_STREAM 1 // resync, called after seeking
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// fallback if ADCTRL_SKIP not implemented: ds_fill_buffer(sh_audio->ds);
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#define ADCTRL_SKIP_FRAME 2 // skip block/frame, called while seeking
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// fallback if ADCTRL_QUERY_FORMAT not implemented: sh_audio->sample_format
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#define ADCTRL_QUERY_FORMAT 3 // test for availabilty of a format
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// fallback: use hw mixer in libao
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#define ADCTRL_SET_VOLUME 4 // not used at the moment
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#endif /* MPLAYER_AD_H */
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