diff options
author | Lukasz Marek <lukasz.m.luki@gmail.com> | 2014-02-16 23:06:23 +0400 |
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committer | Lukasz Marek <lukasz.m.luki@gmail.com> | 2014-02-16 23:07:08 +0400 |
commit | 81c3f81d6f11bf1dad9c6f3de5938e665447b991 (patch) | |
tree | 68bdd8e0804413e940f1a473c3900b4ac1bf2a68 /libavdevice | |
parent | d3cf9b24cf80eb4d317964e887c591809a149cef (diff) |
lavd: add list devices API
Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
Diffstat (limited to 'libavdevice')
-rw-r--r-- | libavdevice/avdevice.c | 41 | ||||
-rw-r--r-- | libavdevice/avdevice.h | 39 | ||||
-rw-r--r-- | libavdevice/version.h | 4 |
3 files changed, 82 insertions, 2 deletions
diff --git a/libavdevice/avdevice.c b/libavdevice/avdevice.c index 51617fb921..9e2b7d52da 100644 --- a/libavdevice/avdevice.c +++ b/libavdevice/avdevice.c @@ -52,3 +52,44 @@ int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToA return AVERROR(ENOSYS); return s->control_message_cb(s, type, data, data_size); } + +int avdevice_list_devices(AVFormatContext *s, AVDeviceInfoList **device_list) +{ + 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) + return s->oformat->get_device_list(s, *device_list); + return s->iformat->get_device_list(s, *device_list); +} + +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); +} diff --git a/libavdevice/avdevice.h b/libavdevice/avdevice.h index 3306020628..28344ca161 100644 --- a/libavdevice/avdevice.h +++ b/libavdevice/avdevice.h @@ -191,4 +191,43 @@ int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToAppMessageType type, void *data, size_t data_size); +/** + * Structure describes basic parameters of the device. + */ +typedef struct AVDeviceInfo { + char *device_name; /**< device name, format depends on device */ + char *device_description; /**< human friendly name */ +} AVDeviceInfo; + +/** + * List of devices. + */ +typedef struct AVDeviceInfoList { + AVDeviceInfo **devices; /**< list of autodetected devices */ + int nb_devices; /**< number of autodetected devices */ + int default_device; /**< index of default device or -1 if no default */ +} AVDeviceInfoList; + +/** + * List devices. + * + * Returns available device names and their parameters. + * + * @note: Some devices may accept system-dependent device names that cannot be + * autodetected. The list returned by this function cannot be assumed to + * be always completed. + * + * @param s device context. + * @param[out] device_list list of autodetected devices. + * @return count of autodetected devices, negative on error. + */ +int avdevice_list_devices(struct AVFormatContext *s, AVDeviceInfoList **device_list); + +/** + * Convinient function to free result of avdevice_list_devices(). + * + * @param devices device list to be freed. + */ +void avdevice_free_list_devices(AVDeviceInfoList **device_list); + #endif /* AVDEVICE_AVDEVICE_H */ diff --git a/libavdevice/version.h b/libavdevice/version.h index 55d7e93b3b..85b3b37662 100644 --- a/libavdevice/version.h +++ b/libavdevice/version.h @@ -28,8 +28,8 @@ #include "libavutil/version.h" #define LIBAVDEVICE_VERSION_MAJOR 55 -#define LIBAVDEVICE_VERSION_MINOR 9 -#define LIBAVDEVICE_VERSION_MICRO 101 +#define LIBAVDEVICE_VERSION_MINOR 10 +#define LIBAVDEVICE_VERSION_MICRO 100 #define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \ LIBAVDEVICE_VERSION_MINOR, \ |