Kernel-mode audio processing modules
First Claim
1. One or more computer-readable media having stored thereon a module of a transform module graph for processing audio data, the module including a plurality of instructions for execution in kernel-mode that, when executed in kernel-mode by one or more processors of a computer, causes the one or more processors to perform acts including:
- receiving in the transform module graph a data packet including audio data;
checking in the transform module graph, based at least in part on a channel group identified in a channel group portion of the data packet, whether the data packet corresponds to a set of one or more channel groups; and
forwarding the data packet to an allocator module for re-allocation of the memory space used by the data packet if the data packet corresponds to the set of one or more channel groups.
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Accused Products
Abstract
Multiple kernel-mode audio processing modules or filters are combined to form a module or filter graph. The graph is implemented in kernel-mode, reducing latency and jitter when handling audio data (e.g., MIDI data) by avoiding transfers of the audio data to user-mode applications for processing. A variety of different audio processing modules can be used to provide various pieces of functionality when processing audio data.
61 Citations
20 Claims
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1. One or more computer-readable media having stored thereon a module of a transform module graph for processing audio data, the module including a plurality of instructions for execution in kernel-mode that, when executed in kernel-mode by one or more processors of a computer, causes the one or more processors to perform acts including:
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receiving in the transform module graph a data packet including audio data; checking in the transform module graph, based at least in part on a channel group identified in a channel group portion of the data packet, whether the data packet corresponds to a set of one or more channel groups; and forwarding the data packet to an allocator module for re-allocation of the memory space used by the data packet if the data packet corresponds to the set of one or more channel groups. - View Dependent Claims (2)
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3. One or more computer-readable media having stored thereon a module of a transform module graph for processing audio data, the module including a plurality of instructions for execution in kernel-mode that, when executed in kernel-mode by one or more processors of a computer, causes the one or more processors to perform acts including:
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receiving in the transform module graph a data packet including audio data; checking in the transform module graph, based at least in part on a channel group identified in a channel group portion of the data packet, whether the data packet corresponds to a set of one or more channel groups; and forwarding the data packet to an allocator module for re-allocation of the memory space used by the data packet if the data packet does not correspond to the set of one or more channel groups. - View Dependent Claims (4)
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5. One or more computer-readable media having stored thereon a module of a transform module graph for processing audio data, the module including a plurality of instructions for execution in kernel-mode that, when executed in kernel-mode by one or more processors of a computer, causes the one or more processors to perform acts including:
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receiving in the transform module graph a data packet including audio data; checking in the transform module graph, based at least in part on a channel group identified in a channel group portion of the data packet, whether the data packet corresponds to a set of one or more channel groups; and changing a channel group identifier in the channel group portion of the data packet if the data packet corresponds to the set of one or more channel groups. - View Dependent Claims (6)
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7. One or more computer-readable media having stored thereon a module of a transform module graph for processing audio data, the module including a plurality of instructions for execution in kernel-mode that, when executed in kernel-mode by one or more processors of a computer, causes the one or more processors to perform acts including:
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receiving in the transform module graph a data packet including audio data; checking in the transform module graph which channel group the data packet corresponds to, wherein the channel group the data packet corresponds to is identified in a channel group portion of the data packet; identifying in the transform module graph, based at least in part on the channel group, a new channel group for the data packet; and modifying in the transform module graph the data packet to include the new channel group. - View Dependent Claims (8)
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9. One or more computer-readable media having stored thereon a module of a transform module graph for processing audio data, the module including a plurality of instructions for execution in kernel-mode that, when executed in kernel-mode by one or more processors of a computer, causes the one or more processors to perform acts including:
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receiving in the transform module graph a data packet including audio data; checking in the transform module graph which channel the audio data corresponds to; identifying in the transform module graph, based at least in part on the channel, a new channel for the data packet; and modifying in the transform module graph the audio data to include the new channel. - View Dependent Claims (10)
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11. One or more computer-readable media having stored thereon a module including a plurality of instructions for execution in kernel-mode that, when executed in kernel-mode by one or more processors of a computer, causes the one or more processors to perform acts including:
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receiving a data packet including audio data; checking which channel the audio data corresponds to; identifying, based at least in part on the channel, a new channel for the data packet; modifying the audio data to include the new channel; and maintaining a channel to new channel mapping, for use in the identifying, in which multiple channels can map to the same new channel and in which a single channel can map to multiple new channels.
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12. A method implemented in a kernel-mode module of a transform module graph for processing audio data, the method comprising:
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receiving in the transform module graph a data packet including audio data; checking in the transform module graph which channel the audio data corresponds to; identifying in the transform module graph, based at least in part on the channel, a new channel for the data packet; and modifying in the transform module graph the audio data to include the new channel. - View Dependent Claims (13, 14)
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15. A method implemented in a kernel-mode module of a transform module graph for processing audio data, the method comprising:
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receiving in the transform module graph a data packet including audio data; checking in the transform module graph, based at least in part on a channel group identified in a channel group portion of the data packet, whether the data packet corresponds to a set of one or more channel groups; and forwarding the data packet to an allocator module for re-allocation of the memory space used by the data packet if the data packet corresponds to the set of one or more channel groups. - View Dependent Claims (16)
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17. A computing device comprising:
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a processor; and a memory, coupled to the processor, having instructions to implement a kernel-mode module of a transform module graph for processing audio data, the instructions causing the processor to perform acts comprising; receiving in the transform module graph a data packet including audio data; checking in the transform module graph, based at least in part on a channel group identified in a channel group portion of the data packet, whether the data packet corresponds to a set of one or more channel groups; and forwarding the data packet to an allocator module for re-allocation of the memory space used by the data packet if the data packet does not correspond to the set of one or more channel groups. - View Dependent Claims (18)
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19. A system having a kernel-mode module of a transform module graph for processing audio data comprising:
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means for receiving in the transform module graph a data packet including audio data; means for checking in the transform module graph, based at least in part on a channel group identified in a channel group portion of the data packet, whether the data packet corresponds to a set of one or more channel groups; and means for changing a channel group identifier in the channel group portion of the data packet if the data packet corresponds to the set of one or more channel groups. - View Dependent Claims (20)
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Specification