mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
opts: add list device sources/sinks options
Allows to list sources/sinks of the devices that implement that functionality. Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
This commit is contained in:
parent
1cff908589
commit
5f55819850
181
cmdutils.c
181
cmdutils.c
@ -2055,3 +2055,184 @@ void *grow_array(void *array, int elem_size, int *size, int new_size)
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}
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return array;
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}
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#if CONFIG_AVDEVICE
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static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts)
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{
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int ret, i;
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AVFormatContext *dev = NULL;
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AVDeviceInfoList *device_list = NULL;
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AVDictionary *tmp_opts = NULL;
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if (!fmt || !fmt->priv_class || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
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return AVERROR(EINVAL);
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printf("Audo-detected sources for %s:\n", fmt->name);
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if (!fmt->get_device_list) {
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ret = AVERROR(ENOSYS);
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printf("Cannot list sources. Not implemented.\n");
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goto fail;
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}
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/* TODO: avformat_open_input calls read_header callback which is not necessary.
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Function like avformat_alloc_output_context2 for input could be helpful here. */
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av_dict_copy(&tmp_opts, opts, 0);
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if ((ret = avformat_open_input(&dev, NULL, fmt, &tmp_opts)) < 0) {
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printf("Cannot open device: %s.\n", fmt->name);
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goto fail;
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}
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if ((ret = avdevice_list_devices(dev, &device_list)) < 0) {
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printf("Cannot list sources.\n");
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goto fail;
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}
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for (i = 0; i < device_list->nb_devices; i++) {
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printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
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device_list->devices[i]->device_name, device_list->devices[i]->device_description);
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}
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fail:
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av_dict_free(&tmp_opts);
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avdevice_free_list_devices(&device_list);
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avformat_close_input(&dev);
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return ret;
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}
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static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts)
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{
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int ret, i;
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AVFormatContext *dev = NULL;
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AVDeviceInfoList *device_list = NULL;
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AVDictionary *tmp_opts = NULL;
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if (!fmt || !fmt->priv_class || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
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return AVERROR(EINVAL);
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printf("Audo-detected sinks for %s:\n", fmt->name);
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if (!fmt->get_device_list) {
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ret = AVERROR(ENOSYS);
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printf("Cannot list sinks. Not implemented.\n");
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goto fail;
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}
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if ((ret = avformat_alloc_output_context2(&dev, fmt, NULL, NULL)) < 0) {
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printf("Cannot open device: %s.\n", fmt->name);
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goto fail;
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}
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av_dict_copy(&tmp_opts, opts, 0);
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av_opt_set_dict2(dev, &tmp_opts, AV_OPT_SEARCH_CHILDREN);
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if ((ret = avdevice_list_devices(dev, &device_list)) < 0) {
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printf("Cannot list sinks.\n");
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goto fail;
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}
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for (i = 0; i < device_list->nb_devices; i++) {
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printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
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device_list->devices[i]->device_name, device_list->devices[i]->device_description);
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}
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fail:
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av_dict_free(&tmp_opts);
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avdevice_free_list_devices(&device_list);
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avformat_free_context(dev);
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return ret;
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}
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static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
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{
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int ret;
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if (arg) {
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char *opts_str = NULL;
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av_assert0(dev && opts);
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*dev = av_strdup(arg);
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if (!*dev)
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return AVERROR(ENOMEM);
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if ((opts_str = strchr(*dev, ','))) {
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*(opts_str++) = '\0';
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if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
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av_freep(dev);
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return ret;
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}
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}
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} else
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printf("\nDevice name is not provided.\n"
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"You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
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return 0;
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}
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int show_sources(void *optctx, const char *opt, const char *arg)
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{
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AVInputFormat *fmt = NULL;
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char *dev = NULL;
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AVDictionary *opts = NULL;
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int ret = 0;
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int error_level = av_log_get_level();
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av_log_set_level(AV_LOG_ERROR);
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if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
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goto fail;
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do {
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fmt = av_input_audio_device_next(fmt);
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if (fmt) {
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if (!strcmp(fmt->name, "lavfi"))
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continue; //it's pointless to probe lavfi
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if (dev && strcmp(fmt->name, dev))
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continue;
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print_device_sources(fmt, opts);
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}
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} while (fmt);
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do {
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fmt = av_input_video_device_next(fmt);
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if (fmt) {
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if (dev && strcmp(fmt->name, dev))
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continue;
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print_device_sources(fmt, opts);
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}
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} while (fmt);
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fail:
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av_dict_free(&opts);
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av_free(dev);
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av_log_set_level(error_level);
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return ret;
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}
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int show_sinks(void *optctx, const char *opt, const char *arg)
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{
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AVOutputFormat *fmt = NULL;
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char *dev = NULL;
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AVDictionary *opts = NULL;
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int ret = 0;
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int error_level = av_log_get_level();
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av_log_set_level(AV_LOG_ERROR);
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if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
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goto fail;
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do {
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fmt = av_output_audio_device_next(fmt);
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if (fmt) {
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if (dev && strcmp(fmt->name, dev))
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continue;
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print_device_sinks(fmt, opts);
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}
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} while (fmt);
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do {
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fmt = av_output_video_device_next(fmt);
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if (fmt) {
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if (dev && strcmp(fmt->name, dev))
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continue;
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print_device_sinks(fmt, opts);
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}
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} while (fmt);
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fail:
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av_dict_free(&opts);
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av_free(dev);
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av_log_set_level(error_level);
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return ret;
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}
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#endif
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14
cmdutils.h
14
cmdutils.h
@ -443,6 +443,20 @@ int show_formats(void *optctx, const char *opt, const char *arg);
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*/
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int show_devices(void *optctx, const char *opt, const char *arg);
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#if CONFIG_AVDEVICE
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/**
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* Print a listing containing audodetected sinks of the output device.
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* Device name with options may be passed as an argument to limit results.
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*/
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int show_sinks(void *optctx, const char *opt, const char *arg);
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/**
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* Print a listing containing audodetected sources of the input device.
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* Device name with options may be passed as an argument to limit results.
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*/
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int show_sources(void *optctx, const char *opt, const char *arg);
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#endif
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/**
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* Print a listing containing all the codecs supported by the
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* program.
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@ -27,3 +27,9 @@
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{ "opencl_bench", OPT_EXIT, {.func_arg = opt_opencl_bench}, "run benchmark on all OpenCL devices and show results" },
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{ "opencl_options", HAS_ARG, {.func_arg = opt_opencl}, "set OpenCL environment options" },
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#endif
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#if CONFIG_AVDEVICE
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{ "sources" , OPT_EXIT | HAS_ARG, { .func_arg = show_sources },
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"list sources of the input device", "device" },
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{ "sinks" , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks },
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"list sinks of the output device", "device" },
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#endif
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@ -141,6 +141,22 @@ Show channel names and standard channel layouts.
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@item -colors
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Show recognized color names.
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@item -sources @var{device}[,@var{opt1}=@var{val1}[,@var{opt2}=@var{val2}]...]
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Show autodetected sources of the intput device.
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Some devices may provide system-dependent source names that cannot be autodetected.
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The returned list cannot be assumed to be always complete.
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@example
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ffmpeg -sources pulse,server=192.168.0.4
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@end example
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@item -sinks @var{device}[,@var{opt1}=@var{val1}[,@var{opt2}=@var{val2}]...]
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Show autodetected sinks of the output device.
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Some devices may provide system-dependent sink names that cannot be autodetected.
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The returned list cannot be assumed to be always complete.
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@example
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ffmpeg -sinks pulse,server=192.168.0.4
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@end example
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@item -loglevel [repeat+]@var{loglevel} | -v [repeat+]@var{loglevel}
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Set the logging level used by the library.
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Adding "repeat+" indicates that repeated log output should not be compressed
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