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https://git.ffmpeg.org/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>
130 lines
4.1 KiB
C
130 lines
4.1 KiB
C
/*
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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/avassert.h"
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#include "libavutil/mem.h"
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#include "avdevice.h"
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#include "internal.h"
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#include "libavformat/demux.h"
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#include "libavformat/mux.h"
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int avdevice_app_to_dev_control_message(struct AVFormatContext *s, enum AVAppToDevMessageType type,
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void *data, size_t data_size)
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{
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if (!s->oformat || !ffofmt(s->oformat)->control_message)
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return AVERROR(ENOSYS);
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return ffofmt(s->oformat)->control_message(s, type, data, data_size);
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}
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int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToAppMessageType type,
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void *data, size_t data_size)
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{
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if (!s->control_message_cb)
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return AVERROR(ENOSYS);
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return s->control_message_cb(s, type, data, data_size);
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}
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int avdevice_list_devices(AVFormatContext *s, AVDeviceInfoList **device_list)
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{
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int ret;
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av_assert0(s);
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av_assert0(device_list);
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av_assert0(s->oformat || s->iformat);
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if ((s->oformat && !ffofmt(s->oformat)->get_device_list) ||
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(s->iformat && !ffifmt(s->iformat)->get_device_list)) {
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*device_list = NULL;
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return AVERROR(ENOSYS);
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}
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*device_list = av_mallocz(sizeof(AVDeviceInfoList));
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if (!(*device_list))
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return AVERROR(ENOMEM);
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/* no default device by default */
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(*device_list)->default_device = -1;
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if (s->oformat)
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ret = ffofmt(s->oformat)->get_device_list(s, *device_list);
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else
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ret = ffifmt(s->iformat)->get_device_list(s, *device_list);
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if (ret < 0) {
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avdevice_free_list_devices(device_list);
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return ret;
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}
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return (*device_list)->nb_devices;
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}
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static int list_devices_for_context(AVFormatContext *s, AVDictionary *options,
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AVDeviceInfoList **device_list)
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{
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AVDictionary *tmp = NULL;
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int ret;
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av_dict_copy(&tmp, options, 0);
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if ((ret = av_opt_set_dict2(s, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
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goto fail;
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ret = avdevice_list_devices(s, device_list);
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fail:
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av_dict_free(&tmp);
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avformat_free_context(s);
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return ret;
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}
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int avdevice_list_input_sources(const AVInputFormat *device, const char *device_name,
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AVDictionary *device_options, AVDeviceInfoList **device_list)
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{
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AVFormatContext *s = NULL;
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int ret;
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if ((ret = ff_alloc_input_device_context(&s, device, device_name)) < 0)
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return ret;
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return list_devices_for_context(s, device_options, device_list);
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}
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int avdevice_list_output_sinks(const AVOutputFormat *device, const char *device_name,
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AVDictionary *device_options, AVDeviceInfoList **device_list)
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{
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AVFormatContext *s = NULL;
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int ret;
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if ((ret = avformat_alloc_output_context2(&s, device, device_name, NULL)) < 0)
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return ret;
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return list_devices_for_context(s, device_options, device_list);
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}
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void avdevice_free_list_devices(AVDeviceInfoList **device_list)
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{
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AVDeviceInfoList *list;
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AVDeviceInfo *dev;
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int i;
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av_assert0(device_list);
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list = *device_list;
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if (!list)
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return;
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for (i = 0; i < list->nb_devices; i++) {
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dev = list->devices[i];
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if (dev) {
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av_freep(&dev->device_name);
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av_freep(&dev->device_description);
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av_freep(&dev->media_types);
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av_free(dev);
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}
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}
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av_freep(&list->devices);
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av_freep(device_list);
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}
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