AUDIO_STREAM_CONFIG_CAPS structure (strmif.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The AUDIO_STREAM_CONFIG_CAPS structure describes a range of audio formats. Audio compression and capture filters use this structure to describe the formats they can produce.
Syntax
typedef struct _AUDIO_STREAM_CONFIG_CAPS {
GUID guid;
ULONG MinimumChannels;
ULONG MaximumChannels;
ULONG ChannelsGranularity;
ULONG MinimumBitsPerSample;
ULONG MaximumBitsPerSample;
ULONG BitsPerSampleGranularity;
ULONG MinimumSampleFrequency;
ULONG MaximumSampleFrequency;
ULONG SampleFrequencyGranularity;
} AUDIO_STREAM_CONFIG_CAPS;
Members
guid
Will be set to MEDIATYPE_Audio to indicate an audio sample.
MinimumChannels
Minimum number of channels.
MaximumChannels
Maximum number of channels.
ChannelsGranularity
Granularity of the channels. For example, the filter might specify channels 2 through 4, in steps of 2.
MinimumBitsPerSample
Minimum bits per sample.
MaximumBitsPerSample
Maximum bits per sample.
BitsPerSampleGranularity
Granularity of the bits per sample. For example, the filter might specify 8 bits per sample through 32 bits per sample, in steps of 8.
MinimumSampleFrequency
Minimum sample frequency.
MaximumSampleFrequency
Maximum sample frequency.
SampleFrequencyGranularity
Granularity of the frequency. For example, the filter might specify 11025 Hz to 44100 Hz, in steps of 11025 Hz.
Requirements
| Requirement | Value |
|---|---|
| Header | strmif.h (include Dshow.h) |