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https://github.com/FFmpeg/FFmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
538 lines
18 KiB
C
538 lines
18 KiB
C
/*
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avformat.h"
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#include "avio_internal.h"
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#include "demux.h"
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#include "internal.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/codec_par.h"
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#include "libavutil/avassert.h"
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#include "libavutil/iamf.h"
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#include "libavutil/internal.h"
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#include "libavutil/intmath.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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/**
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* @file
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* Options definition for AVFormatContext.
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*/
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FF_DISABLE_DEPRECATION_WARNINGS
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#include "options_table.h"
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FF_ENABLE_DEPRECATION_WARNINGS
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static const char* format_to_name(void* ptr)
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{
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AVFormatContext* fc = (AVFormatContext*) ptr;
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if(fc->iformat) return fc->iformat->name;
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else if(fc->oformat) return fc->oformat->name;
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else return fc->av_class->class_name;
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}
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static void *format_child_next(void *obj, void *prev)
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{
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AVFormatContext *s = obj;
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if (!prev && s->priv_data &&
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((s->iformat && s->iformat->priv_class) ||
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s->oformat && s->oformat->priv_class))
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return s->priv_data;
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if (s->pb && s->pb->av_class && prev != s->pb)
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return s->pb;
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return NULL;
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}
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enum {
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CHILD_CLASS_ITER_AVIO = 0,
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CHILD_CLASS_ITER_MUX,
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CHILD_CLASS_ITER_DEMUX,
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CHILD_CLASS_ITER_DONE,
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};
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#define ITER_STATE_SHIFT 16
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static const AVClass *format_child_class_iterate(void **iter)
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{
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// we use the low 16 bits of iter as the value to be passed to
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// av_(de)muxer_iterate()
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void *val = (void*)(((uintptr_t)*iter) & ((1 << ITER_STATE_SHIFT) - 1));
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unsigned int state = ((uintptr_t)*iter) >> ITER_STATE_SHIFT;
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const AVClass *ret = NULL;
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if (state == CHILD_CLASS_ITER_AVIO) {
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ret = &ff_avio_class;
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state++;
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goto finish;
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}
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if (state == CHILD_CLASS_ITER_MUX) {
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const AVOutputFormat *ofmt;
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while ((ofmt = av_muxer_iterate(&val))) {
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ret = ofmt->priv_class;
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if (ret)
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goto finish;
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}
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val = NULL;
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state++;
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}
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if (state == CHILD_CLASS_ITER_DEMUX) {
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const AVInputFormat *ifmt;
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while ((ifmt = av_demuxer_iterate(&val))) {
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ret = ifmt->priv_class;
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if (ret)
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goto finish;
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}
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val = NULL;
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state++;
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}
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finish:
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// make sure none av_(de)muxer_iterate does not set the high bits of val
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av_assert0(!((uintptr_t)val >> ITER_STATE_SHIFT));
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*iter = (void*)((uintptr_t)val | (state << ITER_STATE_SHIFT));
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return ret;
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}
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static AVClassCategory get_category(void *ptr)
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{
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AVFormatContext* s = ptr;
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if(s->iformat) return AV_CLASS_CATEGORY_DEMUXER;
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else return AV_CLASS_CATEGORY_MUXER;
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}
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static const AVClass av_format_context_class = {
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.class_name = "AVFormatContext",
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.item_name = format_to_name,
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.option = avformat_options,
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.version = LIBAVUTIL_VERSION_INT,
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.child_next = format_child_next,
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.child_class_iterate = format_child_class_iterate,
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.category = AV_CLASS_CATEGORY_MUXER,
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.get_category = get_category,
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};
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static int io_open_default(AVFormatContext *s, AVIOContext **pb,
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const char *url, int flags, AVDictionary **options)
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{
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int loglevel;
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if (!strcmp(url, s->url) ||
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s->iformat && !strcmp(s->iformat->name, "image2") ||
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s->oformat && !strcmp(s->oformat->name, "image2")
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) {
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loglevel = AV_LOG_DEBUG;
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} else
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loglevel = AV_LOG_INFO;
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av_log(s, loglevel, "Opening \'%s\' for %s\n", url, flags & AVIO_FLAG_WRITE ? "writing" : "reading");
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return ffio_open_whitelist(pb, url, flags, &s->interrupt_callback, options, s->protocol_whitelist, s->protocol_blacklist);
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}
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static int io_close2_default(AVFormatContext *s, AVIOContext *pb)
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{
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return avio_close(pb);
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}
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AVFormatContext *avformat_alloc_context(void)
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{
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FFFormatContext *const si = av_mallocz(sizeof(*si));
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AVFormatContext *s;
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if (!si)
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return NULL;
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s = &si->pub;
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s->av_class = &av_format_context_class;
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s->io_open = io_open_default;
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s->io_close2= io_close2_default;
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av_opt_set_defaults(s);
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si->pkt = av_packet_alloc();
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si->parse_pkt = av_packet_alloc();
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if (!si->pkt || !si->parse_pkt) {
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avformat_free_context(s);
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return NULL;
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}
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#if FF_API_LAVF_SHORTEST
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si->shortest_end = AV_NOPTS_VALUE;
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#endif
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return s;
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}
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#if FF_API_GET_DUR_ESTIMATE_METHOD
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enum AVDurationEstimationMethod av_fmt_ctx_get_duration_estimation_method(const AVFormatContext* ctx)
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{
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return ctx->duration_estimation_method;
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}
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#endif
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const AVClass *avformat_get_class(void)
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{
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return &av_format_context_class;
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}
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#define DISPOSITION_OPT(ctx) \
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{ "disposition", NULL, offsetof(ctx, disposition), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, \
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.flags = AV_OPT_FLAG_ENCODING_PARAM, .unit = "disposition" }, \
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{ "default", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT }, .unit = "disposition" }, \
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{ "dub", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB }, .unit = "disposition" }, \
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{ "original", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL }, .unit = "disposition" }, \
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{ "comment", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT }, .unit = "disposition" }, \
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{ "lyrics", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS }, .unit = "disposition" }, \
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{ "karaoke", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE }, .unit = "disposition" }, \
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{ "forced", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED }, .unit = "disposition" }, \
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{ "hearing_impaired", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED }, .unit = "disposition" }, \
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{ "visual_impaired", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED }, .unit = "disposition" }, \
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{ "clean_effects", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS }, .unit = "disposition" }, \
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{ "attached_pic", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ATTACHED_PIC }, .unit = "disposition" }, \
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{ "timed_thumbnails", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_TIMED_THUMBNAILS }, .unit = "disposition" }, \
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{ "non_diegetic", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_NON_DIEGETIC }, .unit = "disposition" }, \
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{ "captions", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS }, .unit = "disposition" }, \
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{ "descriptions", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS }, .unit = "disposition" }, \
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{ "metadata", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA }, .unit = "disposition" }, \
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{ "dependent", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEPENDENT }, .unit = "disposition" }, \
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{ "still_image", .type = AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_STILL_IMAGE }, .unit = "disposition" }
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static const AVOption stream_options[] = {
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DISPOSITION_OPT(AVStream),
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{ "discard", NULL, offsetof(AVStream, discard), AV_OPT_TYPE_INT, { .i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX,
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.flags = AV_OPT_FLAG_DECODING_PARAM, .unit = "avdiscard" },
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{ "none", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONE }, .unit = "avdiscard" },
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{ "default", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_DEFAULT }, .unit = "avdiscard" },
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{ "noref", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONREF }, .unit = "avdiscard" },
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{ "bidir", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_BIDIR }, .unit = "avdiscard" },
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{ "nointra", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONINTRA }, .unit = "avdiscard" },
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{ "nokey", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONKEY }, .unit = "avdiscard" },
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{ "all", .type = AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_ALL }, .unit = "avdiscard" },
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{ NULL }
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};
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static const AVClass stream_class = {
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.class_name = "AVStream",
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.item_name = av_default_item_name,
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.version = LIBAVUTIL_VERSION_INT,
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.option = stream_options,
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};
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const AVClass *av_stream_get_class(void)
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{
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return &stream_class;
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}
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AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
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{
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FFFormatContext *const si = ffformatcontext(s);
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FFStream *sti;
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AVStream *st;
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AVStream **streams;
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if (s->nb_streams >= s->max_streams) {
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av_log(s, AV_LOG_ERROR, "Number of streams exceeds max_streams parameter"
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" (%d), see the documentation if you wish to increase it\n",
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s->max_streams);
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return NULL;
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}
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streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
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if (!streams)
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return NULL;
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s->streams = streams;
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sti = av_mallocz(sizeof(*sti));
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if (!sti)
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return NULL;
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st = &sti->pub;
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st->av_class = &stream_class;
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st->codecpar = avcodec_parameters_alloc();
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if (!st->codecpar)
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goto fail;
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sti->fmtctx = s;
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if (s->iformat) {
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sti->avctx = avcodec_alloc_context3(NULL);
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if (!sti->avctx)
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goto fail;
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sti->info = av_mallocz(sizeof(*sti->info));
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if (!sti->info)
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goto fail;
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#if FF_API_R_FRAME_RATE
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sti->info->last_dts = AV_NOPTS_VALUE;
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#endif
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sti->info->fps_first_dts = AV_NOPTS_VALUE;
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sti->info->fps_last_dts = AV_NOPTS_VALUE;
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/* default pts setting is MPEG-like */
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avpriv_set_pts_info(st, 33, 1, 90000);
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/* we set the current DTS to 0 so that formats without any timestamps
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* but durations get some timestamps, formats with some unknown
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* timestamps have their first few packets buffered and the
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* timestamps corrected before they are returned to the user */
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sti->cur_dts = RELATIVE_TS_BASE;
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} else {
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sti->cur_dts = AV_NOPTS_VALUE;
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}
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st->index = s->nb_streams;
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st->start_time = AV_NOPTS_VALUE;
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st->duration = AV_NOPTS_VALUE;
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sti->first_dts = AV_NOPTS_VALUE;
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sti->probe_packets = s->max_probe_packets;
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sti->pts_wrap_reference = AV_NOPTS_VALUE;
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sti->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
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sti->last_IP_pts = AV_NOPTS_VALUE;
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sti->last_dts_for_order_check = AV_NOPTS_VALUE;
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for (int i = 0; i < MAX_REORDER_DELAY + 1; i++)
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sti->pts_buffer[i] = AV_NOPTS_VALUE;
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st->sample_aspect_ratio = (AVRational) { 0, 1 };
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sti->transferred_mux_tb = (AVRational) { 0, 1 };;
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#if FF_API_AVSTREAM_SIDE_DATA
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sti->inject_global_side_data = si->inject_global_side_data;
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#endif
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sti->need_context_update = 1;
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s->streams[s->nb_streams++] = st;
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return st;
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fail:
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ff_free_stream(&st);
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return NULL;
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}
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#define FLAGS AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
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#define OFFSET(x) offsetof(AVStreamGroupTileGrid, x)
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static const AVOption tile_grid_options[] = {
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{ "grid_size", "size of the output canvas", OFFSET(coded_width),
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AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, INT_MAX, FLAGS },
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{ "output_size", "size of valid pixels in output image meant for presentation", OFFSET(width),
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AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, INT_MAX, FLAGS },
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{ "background_color", "set a background color for unused pixels",
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OFFSET(background), AV_OPT_TYPE_COLOR, { .str = "black"}, 0, 0, FLAGS },
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{ "horizontal_offset", NULL, OFFSET(horizontal_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
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{ "vertical_offset", NULL, OFFSET(vertical_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
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{ NULL },
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};
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#undef FLAGS
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#undef OFFSET
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static const AVClass tile_grid_class = {
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.class_name = "AVStreamGroupTileGrid",
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.version = LIBAVUTIL_VERSION_INT,
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.option = tile_grid_options,
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};
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static void *stream_group_child_next(void *obj, void *prev)
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{
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AVStreamGroup *stg = obj;
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if (!prev) {
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switch(stg->type) {
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case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT:
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return stg->params.iamf_audio_element;
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case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION:
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return stg->params.iamf_mix_presentation;
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case AV_STREAM_GROUP_PARAMS_TILE_GRID:
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return stg->params.tile_grid;
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default:
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break;
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}
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}
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return NULL;
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}
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static const AVClass *stream_group_child_iterate(void **opaque)
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{
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uintptr_t i = (uintptr_t)*opaque;
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const AVClass *ret = NULL;
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switch(i) {
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case AV_STREAM_GROUP_PARAMS_NONE:
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i++;
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// fall-through
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case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT:
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ret = av_iamf_audio_element_get_class();
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break;
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case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION:
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ret = av_iamf_mix_presentation_get_class();
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break;
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case AV_STREAM_GROUP_PARAMS_TILE_GRID:
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ret = &tile_grid_class;
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break;
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default:
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break;
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}
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if (ret)
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*opaque = (void*)(i + 1);
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return ret;
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}
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static const AVOption stream_group_options[] = {
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DISPOSITION_OPT(AVStreamGroup),
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{"id", "Set group id", offsetof(AVStreamGroup, id), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
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{ NULL }
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};
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static const AVClass stream_group_class = {
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.class_name = "AVStreamGroup",
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.item_name = av_default_item_name,
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.version = LIBAVUTIL_VERSION_INT,
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.option = stream_group_options,
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.child_next = stream_group_child_next,
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.child_class_iterate = stream_group_child_iterate,
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};
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const AVClass *av_stream_group_get_class(void)
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{
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return &stream_group_class;
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}
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AVStreamGroup *avformat_stream_group_create(AVFormatContext *s,
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enum AVStreamGroupParamsType type,
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AVDictionary **options)
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{
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AVStreamGroup **stream_groups;
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AVStreamGroup *stg;
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FFStreamGroup *stgi;
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stream_groups = av_realloc_array(s->stream_groups, s->nb_stream_groups + 1,
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sizeof(*stream_groups));
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if (!stream_groups)
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return NULL;
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s->stream_groups = stream_groups;
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stgi = av_mallocz(sizeof(*stgi));
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if (!stgi)
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return NULL;
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stg = &stgi->pub;
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stg->av_class = &stream_group_class;
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av_opt_set_defaults(stg);
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stg->type = type;
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switch (type) {
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case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT:
|
|
stg->params.iamf_audio_element = av_iamf_audio_element_alloc();
|
|
if (!stg->params.iamf_audio_element)
|
|
goto fail;
|
|
break;
|
|
case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION:
|
|
stg->params.iamf_mix_presentation = av_iamf_mix_presentation_alloc();
|
|
if (!stg->params.iamf_mix_presentation)
|
|
goto fail;
|
|
break;
|
|
case AV_STREAM_GROUP_PARAMS_TILE_GRID:
|
|
stg->params.tile_grid = av_mallocz(sizeof(*stg->params.tile_grid));
|
|
if (!stg->params.tile_grid)
|
|
goto fail;
|
|
stg->params.tile_grid->av_class = &tile_grid_class;
|
|
av_opt_set_defaults(stg->params.tile_grid);
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
|
|
if (options) {
|
|
if (av_opt_set_dict2(stg, options, AV_OPT_SEARCH_CHILDREN))
|
|
goto fail;
|
|
}
|
|
|
|
stgi->fmtctx = s;
|
|
stg->index = s->nb_stream_groups;
|
|
|
|
s->stream_groups[s->nb_stream_groups++] = stg;
|
|
|
|
return stg;
|
|
fail:
|
|
ff_free_stream_group(&stg);
|
|
return NULL;
|
|
}
|
|
|
|
static int stream_group_add_stream(AVStreamGroup *stg, AVStream *st)
|
|
{
|
|
AVStream **streams = av_realloc_array(stg->streams, stg->nb_streams + 1,
|
|
sizeof(*stg->streams));
|
|
if (!streams)
|
|
return AVERROR(ENOMEM);
|
|
|
|
stg->streams = streams;
|
|
stg->streams[stg->nb_streams++] = st;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int avformat_stream_group_add_stream(AVStreamGroup *stg, AVStream *st)
|
|
{
|
|
const FFStreamGroup *stgi = cffstreamgroup(stg);
|
|
const FFStream *sti = cffstream(st);
|
|
|
|
if (stgi->fmtctx != sti->fmtctx)
|
|
return AVERROR(EINVAL);
|
|
|
|
for (int i = 0; i < stg->nb_streams; i++)
|
|
if (stg->streams[i]->index == st->index)
|
|
return AVERROR(EEXIST);
|
|
|
|
return stream_group_add_stream(stg, st);
|
|
}
|
|
|
|
static int option_is_disposition(const AVOption *opt)
|
|
{
|
|
return opt->type == AV_OPT_TYPE_CONST &&
|
|
opt->unit && !strcmp(opt->unit, "disposition");
|
|
}
|
|
|
|
int av_disposition_from_string(const char *disp)
|
|
{
|
|
for (const AVOption *opt = stream_options; opt->name; opt++)
|
|
if (option_is_disposition(opt) && !strcmp(disp, opt->name))
|
|
return opt->default_val.i64;
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
const char *av_disposition_to_string(int disposition)
|
|
{
|
|
int val;
|
|
|
|
if (disposition <= 0)
|
|
return NULL;
|
|
|
|
val = 1 << ff_ctz(disposition);
|
|
for (const AVOption *opt = stream_options; opt->name; opt++)
|
|
if (option_is_disposition(opt) && opt->default_val.i64 == val)
|
|
return opt->name;
|
|
|
|
return NULL;
|
|
}
|