mirror of https://github.com/mpv-player/mpv
131 lines
4.0 KiB
C
131 lines
4.0 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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#include <assert.h>
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#include "config.h"
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#include "core/mp_talloc.h"
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#include "av_common.h"
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#include "codecs.h"
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#if !HAVE_AVCODEC_IS_DECODER_API
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static int av_codec_is_decoder(AVCodec *codec)
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{
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return !!codec->decode;
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}
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#endif
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void mp_add_lavc_decoders(struct mp_decoder_list *list, enum AVMediaType type)
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{
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AVCodec *cur = NULL;
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for (;;) {
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cur = av_codec_next(cur);
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if (!cur)
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break;
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if (av_codec_is_decoder(cur) && cur->type == type) {
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struct mp_decoder_entry entry = {
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.family = "lavc",
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.codec = mp_codec_from_av_codec_id(cur->id),
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.decoder = cur->name,
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.desc = cur->long_name,
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};
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assert(entry.family);
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MP_TARRAY_APPEND(list, list->entries, list->num_entries, entry);
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}
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}
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}
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#if HAVE_AVCODEC_CODEC_DESC_API
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int mp_codec_to_av_codec_id(const char *codec)
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{
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const AVCodecDescriptor *desc = avcodec_descriptor_get_by_name(codec);
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return desc ? desc->id : CODEC_ID_NONE;
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}
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const char *mp_codec_from_av_codec_id(int codec_id)
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{
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const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
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return desc ? desc->name : NULL;
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}
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#else
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struct mp_av_codec {
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const char *name;
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int codec_id;
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};
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// Some decoders have a different name from the canonical codec name, for
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// example the codec "dts" CODEC_ID_DTS has the decoder named "dca", and
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// avcodec_find_decoder_by_name("dts") would return 0. We always want the
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// canonical name.
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// On newer lavc versions, avcodec_descriptor_get_by_name("dts") will return
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// CODEC_ID_DTS, which is what we want, but for older versions we need this
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// lookup table.
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struct mp_av_codec mp_av_codec_id_list[] = {
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{"ra_144", CODEC_ID_RA_144},
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{"ra_288", CODEC_ID_RA_288},
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{"smackaudio", CODEC_ID_SMACKAUDIO},
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{"dts", CODEC_ID_DTS},
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{"musepack7", CODEC_ID_MUSEPACK7},
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{"musepack8", CODEC_ID_MUSEPACK8},
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{"amr_nb", CODEC_ID_AMR_NB},
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{"amr_wb", CODEC_ID_AMR_WB},
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{"adpcm_g722", CODEC_ID_ADPCM_G722},
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{"adpcm_g726", CODEC_ID_ADPCM_G726},
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{"westwood_snd1", CODEC_ID_WESTWOOD_SND1},
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{"mp4als", CODEC_ID_MP4ALS},
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{"vixl", CODEC_ID_VIXL},
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{"flv1", CODEC_ID_FLV1},
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{"msmpeg4v3", CODEC_ID_MSMPEG4V3},
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{"jpeg2000", CODEC_ID_JPEG2000},
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{"ulti", CODEC_ID_ULTI},
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{"smackvideo", CODEC_ID_SMACKVIDEO},
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{"tscc", CODEC_ID_TSCC},
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{"cscd", CODEC_ID_CSCD},
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{"tgv", CODEC_ID_TGV},
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{"roq", CODEC_ID_ROQ},
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{"idcin", CODEC_ID_IDCIN},
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{"ws_vqa", CODEC_ID_WS_VQA},
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{0},
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};
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int mp_codec_to_av_codec_id(const char *codec)
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{
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for (int n = 0; mp_av_codec_id_list[n].name; n++) {
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if (strcmp(mp_av_codec_id_list[n].name, codec) == 0)
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return mp_av_codec_id_list[n].codec_id;
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}
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AVCodec *avcodec = avcodec_find_decoder_by_name(codec);
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return avcodec ? avcodec->id : CODEC_ID_NONE;
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}
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const char *mp_codec_from_av_codec_id(int codec_id)
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{
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for (int n = 0; mp_av_codec_id_list[n].name; n++) {
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if (mp_av_codec_id_list[n].codec_id == codec_id)
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return mp_av_codec_id_list[n].name;
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}
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AVCodec *avcodec = avcodec_find_decoder(codec_id);
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return avcodec ? avcodec->name : NULL;
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}
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#endif
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