mirror of
https://git.ffmpeg.org/ffmpeg.git
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148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
/*
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* Tee output protocol
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* Copyright (c) 2016 Michael Niedermayer
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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 "libavutil/avstring.h"
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#include "libavutil/opt.h"
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#include "avformat.h"
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#include "avio_internal.h"
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#include "tee_common.h"
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typedef struct ChildContext {
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URLContext *url_context;
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} ChildContext;
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typedef struct TeeContext {
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const AVClass *class;
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int child_count;
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ChildContext *child;
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} TeeContext;
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static const AVOption tee_options[] = {
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{ NULL }
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};
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static const AVClass tee_class = {
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.class_name = "tee",
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.item_name = av_default_item_name,
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.option = tee_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static const char *const child_delim = "|";
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static int tee_write(URLContext *h, const unsigned char *buf, int size)
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{
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TeeContext *c = h->priv_data;
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int i;
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int main_ret = size;
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for (i=0; i<c->child_count; i++) {
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int ret = ffurl_write(c->child[i].url_context, buf, size);
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if (ret < 0)
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main_ret = ret;
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}
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return main_ret;
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}
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static int tee_close(URLContext *h)
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{
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TeeContext *c = h->priv_data;
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int i;
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int main_ret = 0;
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for (i=0; i<c->child_count; i++) {
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int ret = ffurl_closep(&c->child[i].url_context);
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if (ret < 0)
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main_ret = ret;
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}
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av_freep(&c->child);
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c->child_count = 0;
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return main_ret;
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}
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static int tee_open(URLContext *h, const char *filename, int flags)
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{
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TeeContext *c = h->priv_data;
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int ret, i;
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av_strstart(filename, "tee:", &filename);
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if (flags & AVIO_FLAG_READ)
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return AVERROR(ENOSYS);
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while (*filename) {
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char *child_string = av_get_token(&filename, child_delim);
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char *child_name = NULL;
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void *tmp;
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AVDictionary *options = NULL;
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if (!child_string) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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tmp = av_realloc_array(c->child, c->child_count + 1, sizeof(*c->child));
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if (!tmp) {
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ret = AVERROR(ENOMEM);
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goto loop_fail;
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}
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c->child = tmp;
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memset(&c->child[c->child_count], 0, sizeof(c->child[c->child_count]));
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ret = ff_tee_parse_slave_options(h, child_string, &options, &child_name);
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if (ret < 0)
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goto loop_fail;
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ret = ffurl_open_whitelist(&c->child[c->child_count].url_context, child_name, flags,
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&h->interrupt_callback, &options,
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h->protocol_whitelist, h->protocol_blacklist,
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h);
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loop_fail:
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av_freep(&child_string);
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av_dict_free(&options);
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if (ret < 0)
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goto fail;
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c->child_count++;
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if (strspn(filename, child_delim))
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filename++;
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}
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h->is_streamed = 0;
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for (i=0; i<c->child_count; i++) {
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h->is_streamed |= c->child[i].url_context->is_streamed;
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}
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return 0;
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fail:
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tee_close(h);
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return ret;
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}
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const URLProtocol ff_tee_protocol = {
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.name = "tee",
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.url_open = tee_open,
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.url_write = tee_write,
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.url_close = tee_close,
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.priv_data_size = sizeof(TeeContext),
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.priv_data_class = &tee_class,
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.default_whitelist = "crypto,file,http,https,httpproxy,rtmp,tcp,tls"
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};
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