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Code Issues Releases Activity

dshow: add option to list audio/video options

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Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
This commit is contained in:
Ramiro Polla 2011-09-09 00:15:14 -03:00 committed by Stefano Sabatini
parent c4b2027d10
commit 0883a7fa3b
2 changed files with 63 additions and 1 deletions
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2
libavdevice/avdevice.h
View File

@ -24,7 +24,7 @@
#define LIBAVDEVICE_VERSION_MAJOR 53
#define LIBAVDEVICE_VERSION_MINOR 3
#define LIBAVDEVICE_VERSION_MICRO 1
#define LIBAVDEVICE_VERSION_MICRO 2
#define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \
LIBAVDEVICE_VERSION_MINOR, \

62
libavdevice/dshow.c
View File

@ -32,6 +32,7 @@ struct dshow_ctx {
char *device_name[2];
int list_options;
int list_devices;
IBaseFilter *device_filter[2];
@ -311,6 +312,7 @@ fail1:
* Cycle through available formats using the specified pin,
* try to set parameters specified through AVOptions and if successful
* return 1 in *pformat_set.
* If pformat_set is NULL, list all pin capabilities.
*/
static void
dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype,
@ -357,6 +359,14 @@ dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype,
} else {
goto next;
}
if (!pformat_set) {
av_log(avctx, AV_LOG_INFO, " min s=%ldx%ld fps=%g max s=%ldx%ld fps=%g\n",
vcaps->MinOutputSize.cx, vcaps->MinOutputSize.cy,
1e7 / vcaps->MinFrameInterval,
vcaps->MaxOutputSize.cx, vcaps->MaxOutputSize.cy,
1e7 / vcaps->MaxFrameInterval);
continue;
}
if (ctx->framerate) {
int64_t framerate = ((int64_t) ctx->requested_framerate.den*10000000)
/ ctx->requested_framerate.num;
@ -385,6 +395,12 @@ dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype,
} else {
goto next;
}
if (!pformat_set) {
av_log(avctx, AV_LOG_INFO, " min ch=%lu bits=%lu rate=%6lu max ch=%lu bits=%lu rate=%6lu\n",
acaps->MinimumChannels, acaps->MinimumBitsPerSample, acaps->MinimumSampleFrequency,
acaps->MaximumChannels, acaps->MaximumBitsPerSample, acaps->MaximumSampleFrequency);
continue;
}
if (ctx->sample_rate) {
if (ctx->sample_rate > acaps->MaximumSampleFrequency ||
ctx->sample_rate < acaps->MinimumSampleFrequency)
@ -416,6 +432,7 @@ end:
IAMStreamConfig_Release(config);
if (caps)
av_free(caps);
if (pformat_set)
*pformat_set = format_set;
}
@ -423,6 +440,7 @@ end:
* Cycle through available pins using the device_filter device, of type
* devtype, retrieve the first output pin and return the pointer to the
* object found in *ppin.
* If ppin is NULL, cycle through all pins listing audio/video capabilities.
*/
static int
dshow_cycle_pins(AVFormatContext *avctx, enum dshowDeviceType devtype,
@ -447,6 +465,10 @@ dshow_cycle_pins(AVFormatContext *avctx, enum dshowDeviceType devtype,
return AVERROR(EIO);
}
if (!ppin) {
av_log(avctx, AV_LOG_INFO, "DirectShow %s device options\n",
devtypename);
}
while (IEnumPins_Next(pins, 1, &pin, NULL) == S_OK && !device_pin) {
IKsPropertySet *p = NULL;
IEnumMediaTypes *types = NULL;
@ -468,6 +490,13 @@ dshow_cycle_pins(AVFormatContext *avctx, enum dshowDeviceType devtype,
if (!IsEqualGUID(&category, &PIN_CATEGORY_CAPTURE))
goto next;
if (!ppin) {
char *buf = dup_wchar_to_utf8(info.achName);
av_log(avctx, AV_LOG_INFO, " Pin \"%s\"\n", buf);
av_free(buf);
dshow_cycle_formats(avctx, devtype, pin, NULL);
goto next;
}
if (set_format) {
dshow_cycle_formats(avctx, devtype, pin, &format_set);
if (!format_set) {
@ -498,6 +527,7 @@ next:
IEnumPins_Release(pins);
if (ppin) {
if (set_format && !format_set) {
av_log(avctx, AV_LOG_ERROR, "Could not set %s options\n", devtypename);
return AVERROR(EIO);
@ -508,6 +538,27 @@ next:
return AVERROR(EIO);
}
*ppin = device_pin;
}
return 0;
}
/**
* List options for device with type devtype.
*
* @param devenum device enumerator used for accessing the device
*/
static int
dshow_list_device_options(AVFormatContext *avctx, ICreateDevEnum *devenum,
enum dshowDeviceType devtype)
{
IBaseFilter *device_filter = NULL;
int r;
if ((r = dshow_cycle_devices(avctx, devenum, devtype, &device_filter)) < 0)
return r;
if ((r = dshow_cycle_pins(avctx, devtype, device_filter, NULL)) < 0)
return r;
return 0;
}
@ -774,6 +825,14 @@ static int dshow_read_header(AVFormatContext *avctx, AVFormatParameters *ap)
ret = AVERROR_EXIT;
goto error;
}
if (ctx->list_options) {
if (ctx->device_name[VideoDevice])
dshow_list_device_options(avctx, devenum, VideoDevice);
if (ctx->device_name[AudioDevice])
dshow_list_device_options(avctx, devenum, AudioDevice);
ret = AVERROR_EXIT;
goto error;
}
if (ctx->device_name[VideoDevice]) {
ret = dshow_open_device(avctx, devenum, VideoDevice);
@ -873,6 +932,9 @@ static const AVOption options[] = {
{ "list_devices", "list available devices", OFFSET(list_devices), FF_OPT_TYPE_INT, {.dbl=0}, 0, 1, DEC, "list_devices" },
{ "true", "", 0, FF_OPT_TYPE_CONST, {.dbl=1}, 0, 0, DEC, "list_devices" },
{ "false", "", 0, FF_OPT_TYPE_CONST, {.dbl=0}, 0, 0, DEC, "list_devices" },
{ "list_options", "list available options for specified device", OFFSET(list_options), FF_OPT_TYPE_INT, {.dbl=0}, 0, 1, DEC, "list_options" },
{ "true", "", 0, FF_OPT_TYPE_CONST, {.dbl=1}, 0, 0, DEC, "list_options" },
{ "false", "", 0, FF_OPT_TYPE_CONST, {.dbl=0}, 0, 0, DEC, "list_options" },
{ NULL },
};