From 5f558198502001c7f26601352b979738e2e16b42 Mon Sep 17 00:00:00 2001 From: Lukasz Marek Date: Thu, 7 Aug 2014 00:45:26 +0200 Subject: opts: add list device sources/sinks options Allows to list sources/sinks of the devices that implement that functionality. Signed-off-by: Lukasz Marek --- cmdutils.c | 181 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 181 insertions(+) (limited to 'cmdutils.c') diff --git a/cmdutils.c b/cmdutils.c index 46bfcca4ec..b777396772 100644 --- a/cmdutils.c +++ b/cmdutils.c @@ -2055,3 +2055,184 @@ void *grow_array(void *array, int elem_size, int *size, int new_size) } return array; } + +#if CONFIG_AVDEVICE +static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts) +{ + int ret, i; + AVFormatContext *dev = NULL; + AVDeviceInfoList *device_list = NULL; + AVDictionary *tmp_opts = NULL; + + if (!fmt || !fmt->priv_class || !AV_IS_INPUT_DEVICE(fmt->priv_class->category)) + return AVERROR(EINVAL); + + printf("Audo-detected sources for %s:\n", fmt->name); + if (!fmt->get_device_list) { + ret = AVERROR(ENOSYS); + printf("Cannot list sources. Not implemented.\n"); + goto fail; + } + + /* TODO: avformat_open_input calls read_header callback which is not necessary. + Function like avformat_alloc_output_context2 for input could be helpful here. */ + av_dict_copy(&tmp_opts, opts, 0); + if ((ret = avformat_open_input(&dev, NULL, fmt, &tmp_opts)) < 0) { + printf("Cannot open device: %s.\n", fmt->name); + goto fail; + } + + if ((ret = avdevice_list_devices(dev, &device_list)) < 0) { + printf("Cannot list sources.\n"); + goto fail; + } + + for (i = 0; i < device_list->nb_devices; i++) { + printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ", + device_list->devices[i]->device_name, device_list->devices[i]->device_description); + } + + fail: + av_dict_free(&tmp_opts); + avdevice_free_list_devices(&device_list); + avformat_close_input(&dev); + return ret; +} + +static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts) +{ + int ret, i; + AVFormatContext *dev = NULL; + AVDeviceInfoList *device_list = NULL; + AVDictionary *tmp_opts = NULL; + + if (!fmt || !fmt->priv_class || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category)) + return AVERROR(EINVAL); + + printf("Audo-detected sinks for %s:\n", fmt->name); + if (!fmt->get_device_list) { + ret = AVERROR(ENOSYS); + printf("Cannot list sinks. Not implemented.\n"); + goto fail; + } + + if ((ret = avformat_alloc_output_context2(&dev, fmt, NULL, NULL)) < 0) { + printf("Cannot open device: %s.\n", fmt->name); + goto fail; + } + av_dict_copy(&tmp_opts, opts, 0); + av_opt_set_dict2(dev, &tmp_opts, AV_OPT_SEARCH_CHILDREN); + + if ((ret = avdevice_list_devices(dev, &device_list)) < 0) { + printf("Cannot list sinks.\n"); + goto fail; + } + + for (i = 0; i < device_list->nb_devices; i++) { + printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ", + device_list->devices[i]->device_name, device_list->devices[i]->device_description); + } + + fail: + av_dict_free(&tmp_opts); + avdevice_free_list_devices(&device_list); + avformat_free_context(dev); + return ret; +} + +static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts) +{ + int ret; + if (arg) { + char *opts_str = NULL; + av_assert0(dev && opts); + *dev = av_strdup(arg); + if (!*dev) + return AVERROR(ENOMEM); + if ((opts_str = strchr(*dev, ','))) { + *(opts_str++) = '\0'; + if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) { + av_freep(dev); + return ret; + } + } + } else + printf("\nDevice name is not provided.\n" + "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n"); + return 0; +} + +int show_sources(void *optctx, const char *opt, const char *arg) +{ + AVInputFormat *fmt = NULL; + char *dev = NULL; + AVDictionary *opts = NULL; + int ret = 0; + int error_level = av_log_get_level(); + + av_log_set_level(AV_LOG_ERROR); + + if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0) + goto fail; + + do { + fmt = av_input_audio_device_next(fmt); + if (fmt) { + if (!strcmp(fmt->name, "lavfi")) + continue; //it's pointless to probe lavfi + if (dev && strcmp(fmt->name, dev)) + continue; + print_device_sources(fmt, opts); + } + } while (fmt); + do { + fmt = av_input_video_device_next(fmt); + if (fmt) { + if (dev && strcmp(fmt->name, dev)) + continue; + print_device_sources(fmt, opts); + } + } while (fmt); + fail: + av_dict_free(&opts); + av_free(dev); + av_log_set_level(error_level); + return ret; +} + +int show_sinks(void *optctx, const char *opt, const char *arg) +{ + AVOutputFormat *fmt = NULL; + char *dev = NULL; + AVDictionary *opts = NULL; + int ret = 0; + int error_level = av_log_get_level(); + + av_log_set_level(AV_LOG_ERROR); + + if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0) + goto fail; + + do { + fmt = av_output_audio_device_next(fmt); + if (fmt) { + if (dev && strcmp(fmt->name, dev)) + continue; + print_device_sinks(fmt, opts); + } + } while (fmt); + do { + fmt = av_output_video_device_next(fmt); + if (fmt) { + if (dev && strcmp(fmt->name, dev)) + continue; + print_device_sinks(fmt, opts); + } + } while (fmt); + fail: + av_dict_free(&opts); + av_free(dev); + av_log_set_level(error_level); + return ret; +} +#endif -- cgit v1.2.3