diff options
Diffstat (limited to 'libavdevice/avdevice.c')
-rw-r--r-- | libavdevice/avdevice.c | 122 |
1 files changed, 116 insertions, 6 deletions
diff --git a/libavdevice/avdevice.c b/libavdevice/avdevice.c index 5a5c762..ea14c7a 100644 --- a/libavdevice/avdevice.c +++ b/libavdevice/avdevice.c @@ -1,36 +1,146 @@ /* - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include "libavutil/avassert.h" #include "avdevice.h" #include "config.h" unsigned avdevice_version(void) { + av_assert0(LIBAVDEVICE_VERSION_MICRO >= 100); return LIBAVDEVICE_VERSION_INT; } const char * avdevice_configuration(void) { - return LIBAV_CONFIGURATION; + return FFMPEG_CONFIGURATION; } const char * avdevice_license(void) { #define LICENSE_PREFIX "libavdevice license: " - return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1; + return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; +} + +static void *av_device_next(void *prev, int output, + AVClassCategory c1, AVClassCategory c2) +{ + const AVClass *pc; + AVClassCategory category = AV_CLASS_CATEGORY_NA; + do { + if (output) { + if (!(prev = av_oformat_next(prev))) + break; + pc = ((AVOutputFormat *)prev)->priv_class; + } else { + if (!(prev = av_iformat_next(prev))) + break; + pc = ((AVInputFormat *)prev)->priv_class; + } + if (!pc) + continue; + category = pc->category; + } while (category != c1 && category != c2); + return prev; +} + +AVInputFormat *av_input_audio_device_next(AVInputFormat *d) +{ + return av_device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT, + AV_CLASS_CATEGORY_DEVICE_INPUT); +} + +AVInputFormat *av_input_video_device_next(AVInputFormat *d) +{ + return av_device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT, + AV_CLASS_CATEGORY_DEVICE_INPUT); +} + +AVOutputFormat *av_output_audio_device_next(AVOutputFormat *d) +{ + return av_device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT, + AV_CLASS_CATEGORY_DEVICE_OUTPUT); +} + +AVOutputFormat *av_output_video_device_next(AVOutputFormat *d) +{ + return av_device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT, + AV_CLASS_CATEGORY_DEVICE_OUTPUT); +} + +int avdevice_app_to_dev_control_message(struct AVFormatContext *s, enum AVAppToDevMessageType type, + void *data, size_t data_size) +{ + if (!s->oformat || !s->oformat->control_message) + return AVERROR(ENOSYS); + return s->oformat->control_message(s, type, data, data_size); +} + +int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToAppMessageType type, + void *data, size_t data_size) +{ + if (!s->control_message_cb) + return AVERROR(ENOSYS); + return s->control_message_cb(s, type, data, data_size); +} + +int avdevice_list_devices(AVFormatContext *s, AVDeviceInfoList **device_list) +{ + int ret; + av_assert0(s); + av_assert0(device_list); + av_assert0(s->oformat || s->iformat); + if ((s->oformat && !s->oformat->get_device_list) || + (s->iformat && !s->iformat->get_device_list)) { + *device_list = NULL; + return AVERROR(ENOSYS); + } + *device_list = av_mallocz(sizeof(AVDeviceInfoList)); + if (!(*device_list)) + return AVERROR(ENOMEM); + if (s->oformat) + ret = s->oformat->get_device_list(s, *device_list); + else + ret = s->iformat->get_device_list(s, *device_list); + if (ret < 0) + avdevice_free_list_devices(device_list); + return ret; +} + +void avdevice_free_list_devices(AVDeviceInfoList **device_list) +{ + AVDeviceInfoList *list; + AVDeviceInfo *dev; + int i; + + av_assert0(device_list); + list = *device_list; + if (!list) + return; + + for (i = 0; i < list->nb_devices; i++) { + dev = list->devices[i]; + if (dev) { + av_free(dev->device_name); + av_free(dev->device_description); + av_free(dev); + } + } + av_free(list->devices); + av_freep(device_list); } |