Use lower case

1 files changed, 0 insertions, 655 deletions

diff --git a/AVStream/avssamp/audio.cpp b/AVStream/avssamp/audio.cpp
deleted file mode 100644
index cc35f869..00000000
--- a/AVStream/avssamp/audio.cpp
+++ /dev/null
@@ -1,655 +0,0 @@
-/**************************************************************************
-
-    AVStream Filter-Centric Sample
-
-    Copyright (c) 1999 - 2001, Microsoft Corporation
-
-    File:
-
-        audio.cpp
-
-    Abstract:
-
-        This file contains the audio capture pin implementation.
-
-    History:
-
-        created 6/28/01
-
-**************************************************************************/
-
-#include "avssamp.h"
-
-/**************************************************************************
-
-    PAGED CODE
-
-**************************************************************************/
-
-#ifdef ALLOC_PRAGMA
-#pragma code_seg("PAGE")
-#endif // ALLOC_PRAGMA
-
-
-NTSTATUS
-CAudioCapturePin::
-DispatchCreate (
-    IN PKSPIN Pin,
-    IN PIRP Irp
-    )
-
-/*++
-
-Routine Description:
-
-    Create a new audio capture pin.  This is the creation dispatch for
-    the audio capture pin.
-
-Arguments:
-
-    Pin -
-        The pin being created
-
-    Irp -
-        The creation Irp
-
-Return Value:
-
-    Success / Failure
-
---*/
-
-{
-
-    PAGED_CODE();
-
-    NTSTATUS Status = STATUS_SUCCESS;
-
-    CAudioCapturePin *CapPin = new (NonPagedPool) CAudioCapturePin (Pin);
-    CCapturePin *BasePin = static_cast <CCapturePin *> (CapPin);
-
-    if (!CapPin) {
-        //
-        // Return failure if we couldn't create the pin.
-        //
-        Status = STATUS_INSUFFICIENT_RESOURCES;
-
-    } else {
-        //
-        // Add the item to the object bag if we we were successful. 
-        // Whenever the pin closes, the bag is cleaned up and we will be
-        // freed.
-        //
-        Status = KsAddItemToObjectBag (
-            Pin -> Bag,
-            reinterpret_cast <PVOID> (BasePin),
-            reinterpret_cast <PFNKSFREE> (CCapturePin::BagCleanup)
-            );
-
-        if (!NT_SUCCESS (Status)) {
-            delete CapPin;
-        } else {
-            Pin -> Context = reinterpret_cast <PVOID> (BasePin);
-        }
-
-    }
-
-    return Status;
-
-}
-
-/*************************************************/
-
-
-NTSTATUS
-CAudioCapturePin::
-Acquire (
-    IN KSSTATE FromState
-    )
-
-/*++
-
-Routine Description:
-
-    Called when the pin transitions into acquire, this gets and releases
-    our hold on the wave object we use to synthesize audio streams.
-
-Arguments:
-
-    FromState -
-        The state the pin is transitioning away from
-
-Return Value:
-
-    Success / Failure
-
---*/
-
-{
-
-    PAGED_CODE();
-
-    NTSTATUS Status = STATUS_SUCCESS;
-
-    if (FromState == KSSTATE_STOP) {
-        //
-        // On the transition into acquire from stop, get ahold of the
-        // wave object we're synthesizing from.
-        //
-        m_WaveObject = m_ParentFilter -> GetWaveObject ();
-        NT_ASSERT (m_WaveObject);
-
-        //
-        // There must be a wave object or something is really wrong.
-        //
-        if (!m_WaveObject) {
-            Status = STATUS_INTERNAL_ERROR;
-        } else {
-            m_WaveObject -> Reset ();
-        }
-
-    } else {
-        //
-        // Ensure we hold no reference on the wave object.
-        //
-        m_WaveObject = NULL;
-
-    }
-
-    return Status;
-            
-}
-
-/*************************************************/
-
-
-NTSTATUS
-CAudioCapturePin::
-IntersectHandler (
-    IN PKSFILTER Filter,
-    IN PIRP Irp,
-    IN PKSP_PIN PinInstance,
-    IN PKSDATARANGE CallerDataRange,
-    IN PKSDATARANGE DescriptorDataRange,
-    IN ULONG BufferSize,
-    OUT PVOID Data OPTIONAL,
-    OUT PULONG DataSize
-    )
-
-/*++
-
-Routine Description:
-
-    The intersect handler for the audio capture pin.  This is really quite
-    simple because the audio pin only exposes the number of channels,
-    sampling frequency, etc...  that the wave file it is synthesizing from
-    contains.
-
-Arguments:
-
-    Filter -
-        Contains a void pointer to the  filter structure.
-
-    Irp -
-        Contains a pointer to the data intersection property request.
-
-    PinInstance -
-        Contains a pointer to a structure indicating the pin in question.
-
-    CallerDataRange -
-        Contains a pointer to one of the data ranges supplied by the client
-        in the data intersection request.  The format type, subtype and
-        specifier are compatible with the DescriptorDataRange.
-
-    DescriptorDataRange -
-        Contains a pointer to one of the data ranges from the pin descriptor
-        for the pin in question.  The format type, subtype and specifier are
-        compatible with the CallerDataRange.
-
-    BufferSize -
-        Contains the size in bytes of the buffer pointed to by the Data
-        argument.  For size queries, this value will be zero.
-
-    Data -
-        Optionally contains a pointer to the buffer to contain the data 
-        format structure representing the best format in the intersection 
-        of the two data ranges.  For size queries, this pointer will be 
-        NULL.
-
-    DataSize -
-        Contains a pointer to the location at which to deposit the size 
-        of the data format.  This information is supplied by the function 
-        when the format is actually delivered and in response to size 
-        queries.
-
-Return Value:
-
-    STATUS_SUCCESS if there is an intersection and it fits in the supplied
-    buffer, STATUS_BUFFER_OVERFLOW for successful size queries, 
-    STATUS_NO_MATCH if the intersection is empty, or 
-    STATUS_BUFFER_TOO_SMALL if the supplied buffer is too small.
-
---*/
-
-
-{
-    
-    PAGED_CODE();
-
-    //
-    // Verify that the inpassed range is valid size. 
-    //
-    if (CallerDataRange -> FormatSize < sizeof (KSDATARANGE_AUDIO)) {
-        return STATUS_NO_MATCH;
-    }
-
-    //
-    // Because the only range we expose is such that it will match
-    // KSDATARANGE_AUDIO, it is safe to interpret the data structures as
-    // KSDATARANGE_AUDIO.  This is due to the fact that AVStream will have
-    // prematched the GUIDs for us.
-    //
-    PKSDATARANGE_AUDIO CallerAudioRange =
-        reinterpret_cast <PKSDATARANGE_AUDIO> (CallerDataRange);
-
-    PKSDATARANGE_AUDIO DescriptorAudioRange =
-        reinterpret_cast <PKSDATARANGE_AUDIO> (DescriptorDataRange);
-
-    //
-    // We are returning a KSDATAFORMAT_WAVEFORMATEX.  Specify such if a size
-    // query happens.
-    //
-    if (BufferSize == 0) {
-        *DataSize = sizeof (KSDATAFORMAT_WAVEFORMATEX);
-        return STATUS_BUFFER_OVERFLOW;
-    }
-
-    if (BufferSize < sizeof (KSDATAFORMAT_WAVEFORMATEX)) {
-        return STATUS_BUFFER_TOO_SMALL;
-    }
-
-    //
-    // Match the blocks.  We only support one format (not really a range), so
-    // this intersection aught to be really simple.  It's more of a check
-    // if the format we are going to use intersects somewhere in 
-    // CallerAudioRange.
-    //
-    if (DescriptorAudioRange -> MaximumChannels > 
-            CallerAudioRange -> MaximumChannels ||
-        DescriptorAudioRange -> MinimumBitsPerSample <
-            CallerAudioRange -> MinimumBitsPerSample ||
-        DescriptorAudioRange -> MinimumBitsPerSample >
-            CallerAudioRange -> MaximumBitsPerSample ||
-        DescriptorAudioRange -> MinimumSampleFrequency <
-            CallerAudioRange -> MinimumSampleFrequency ||
-        DescriptorAudioRange -> MinimumSampleFrequency >
-            CallerAudioRange -> MaximumSampleFrequency) {
-
-        //
-        // If the descriptor's "range" (more of a single format specified
-        // in a range) doesn't intersect the caller's, no match the call.
-        //
-        *DataSize = sizeof (KSDATAFORMAT_WAVEFORMATEX);
-        return STATUS_NO_MATCH;
-
-    }
-
-    //
-    // Build the format.
-    //
-    PKSDATAFORMAT_WAVEFORMATEX WaveFormat =
-        reinterpret_cast <PKSDATAFORMAT_WAVEFORMATEX> (Data);
-
-    RtlCopyMemory (
-        &WaveFormat -> DataFormat,
-        &DescriptorAudioRange -> DataRange,
-        sizeof (KSDATAFORMAT)
-        );
-
-    WaveFormat -> WaveFormatEx.wFormatTag = WAVE_FORMAT_PCM;
-    WaveFormat -> WaveFormatEx.nChannels = 
-        (WORD)DescriptorAudioRange -> MaximumChannels;
-    WaveFormat -> WaveFormatEx.nSamplesPerSec =
-        DescriptorAudioRange -> MaximumSampleFrequency;
-    WaveFormat -> WaveFormatEx.wBitsPerSample =
-        (WORD)DescriptorAudioRange -> MaximumBitsPerSample;
-    WaveFormat -> WaveFormatEx.nBlockAlign =
-        (WaveFormat -> WaveFormatEx.wBitsPerSample / 8) *
-        WaveFormat -> WaveFormatEx.nChannels;
-    WaveFormat -> WaveFormatEx.nAvgBytesPerSec =
-        WaveFormat -> WaveFormatEx.nBlockAlign *
-        WaveFormat -> WaveFormatEx.nSamplesPerSec;
-    WaveFormat -> WaveFormatEx.cbSize = 0;
-    WaveFormat -> DataFormat.SampleSize = 
-        WaveFormat -> WaveFormatEx.nBlockAlign;
-    
-    WaveFormat -> DataFormat.FormatSize = 
-    *DataSize = sizeof (KSDATAFORMAT_WAVEFORMATEX);
-
-    return STATUS_SUCCESS;
-
-}
-
-/*************************************************/
-
-
-NTSTATUS
-CAudioCapturePin::
-DispatchSetFormat (
-    IN PKSPIN Pin,
-    IN PKSDATAFORMAT OldFormat OPTIONAL,
-    IN PKSMULTIPLE_ITEM OldAttributeList OPTIONAL,
-    IN const KSDATARANGE *DataRange,
-    IN const KSATTRIBUTE_LIST *AttributeRange OPTIONAL
-    )
-
-/*++
-
-Routine Description:
-
-    This is the set data format dispatch for the capture pin.  It is called
-    in two circumstances.
-
-        1: before Pin's creation dispatch has been made to verify that
-           Pin -> ConnectionFormat is an acceptable format for the range
-           DataRange.  In this case OldFormat is NULL.
-
-        2: after Pin's creation dispatch has been made and an initial format
-           selected in order to change the format for the pin.  In this case,
-           OldFormat will not be NULL.
-
-    Validate that the format is acceptible and perform the actions necessary
-    to change format if appropriate.
-
-Arguments:
-
-    Pin -
-        The pin this format is being set on.  The format itself will be in
-        Pin -> ConnectionFormat.
-
-    OldFormat -
-        The previous format used on this pin.  If this is NULL, it is an
-        indication that Pin's creation dispatch has not yet been made and
-        that this is a request to validate the initial format and not to
-        change formats.
-
-    OldAttributeList -
-        The old attribute list for the prior format
-
-    DataRange -
-        A range out of our list of data ranges which was determined to be
-        at least a partial match for Pin -> ConnectionFormat.  If the format
-        there is unacceptable for the range, STATUS_NO_MATCH should be
-        returned.
-
-    AttributeRange -
-        The attribute range
-
-Return Value:
-
-    Success / Failure
-
-        STATUS_SUCCESS -
-            The format is acceptable / the format has been changed
-
-        STATUS_NO_MATCH -
-            The format is not-acceptable / the format has not been changed
-
---*/
-
-{
-
-    PAGED_CODE();
-
-    //
-    // This pin does not accept any format changes.  It is fixed format based
-    // on what the wave file we're synthesizing from is.  Thus, we don't
-    // need to worry about this being called in any context except pin
-    // creation (KSPIN_FLAG_FIXED_FORMAT ensures this).  Knowing that the
-    // format already is a GUID match for the range and we only have one
-    // range, the interpretation without any guid checks is safe.
-    //
-    NT_ASSERT (!OldFormat);
-
-    const KSDATARANGE_AUDIO *DataRangeAudio =
-        reinterpret_cast <const KSDATARANGE_AUDIO *> (DataRange);
-
-    //
-    // Verify the format is the right size.
-    //
-    if (Pin -> ConnectionFormat -> FormatSize <
-        sizeof (KSDATAFORMAT_WAVEFORMATEX)) {
-
-        return STATUS_NO_MATCH;
-    }
-
-    PKSDATAFORMAT_WAVEFORMATEX WaveFormat =
-        reinterpret_cast <PKSDATAFORMAT_WAVEFORMATEX> (
-            Pin -> ConnectionFormat
-            );
-
-    //
-    // This is not an intersection, but rather a direct comparison due to
-    // the fact that we're fixed to a single format and do not really have
-    // a range.
-    //
-    if (WaveFormat -> WaveFormatEx.wFormatTag != WAVE_FORMAT_PCM ||
-        WaveFormat -> WaveFormatEx.nChannels !=
-            DataRangeAudio -> MaximumChannels ||
-        WaveFormat -> WaveFormatEx.nSamplesPerSec !=
-            DataRangeAudio -> MaximumSampleFrequency ||
-        WaveFormat -> WaveFormatEx.wBitsPerSample !=
-            DataRangeAudio -> MaximumBitsPerSample) {
-
-        return STATUS_NO_MATCH;
-
-    }
-
-    //
-    // The format passes consideration.  Allow the pin creation with this
-    // particular format.
-    //
-    return STATUS_SUCCESS;
-    
-}
-
-/**************************************************************************
-
-    LOCKED CODE
-
-**************************************************************************/
-
-#ifdef ALLOC_PRAGMA
-#pragma code_seg()
-#endif // ALLOC_PRAGMA
-
-
-NTSTATUS
-CAudioCapturePin::
-CaptureFrame (
-    IN PKSPROCESSPIN ProcessPin,
-    IN ULONG Tick
-    )
-
-/*++
-
-Routine Description:
-
-    Called to synthesize a frame of audio data from the wave object.
-
-Arguments:
-
-    ProcessPin -
-        The process pin from the filter's process pins index
-
-    Tick -
-        The tick counter from the filter (the number of DPC's that have 
-        happened since the DPC timer started).  Note that the DPC timer
-        starts at pause and capture starts at run.
-
-Return Value:
-
-    Success / Failure
-
---*/
-
-{
-
-    NT_ASSERT (ProcessPin -> Pin == m_Pin);
-
-    //
-    // Increment the frame number.  This is the total count of frames which
-    // have attempted capture.
-    //
-    m_FrameNumber++;
-
-    //
-    // Find out how much time worth of audio data to synthesize into
-    // the buffer a buffer (or how much time to skip if there are no available
-    // capture buffers).
-    //
-    LONGLONG TimerInterval = m_ParentFilter -> GetTimerInterval ();
-
-    //
-    // Since this pin is KSPIN_FLAG_FRAMES_NOT_REQUIRED_FOR_PROCESSING, it
-    // means that we do not require frames available in order to process.
-    // This means that this routine can get called from our DPC with no
-    // buffers available to capture into.  In this case, we increment our
-    // dropped frame counter and skip forward into the audio stream.
-    //
-    if (ProcessPin -> BytesAvailable) {
-        //
-        // Synthesize a fixed amount of audio data based on the timer interval.
-        //
-        ULONG BytesUsed = m_WaveObject -> SynthesizeFixed (
-            TimerInterval,
-            ProcessPin -> Data,
-            ProcessPin -> BytesAvailable
-            );
-    
-        ProcessPin -> BytesUsed = BytesUsed;
-        ProcessPin -> Terminate = TRUE;
-    
-        //
-        // Time stamp the packet if there is a clock assigned.
-        //
-        if (m_Clock) {
-            PKSSTREAM_HEADER StreamHeader = 
-                ProcessPin -> StreamPointer -> StreamHeader;
-
-            StreamHeader -> PresentationTime.Time = m_Clock -> GetTime ();
-            StreamHeader -> PresentationTime.Numerator =
-                StreamHeader -> PresentationTime.Denominator = 1;
-            StreamHeader -> OptionsFlags |=
-                KSSTREAM_HEADER_OPTIONSF_TIMEVALID;
-        }
-
-    } else {
-        m_DroppedFrames++;
-
-        //
-        // Since we've skipped an audio frame, inform the wave object to
-        // skip forward this much.
-        //
-        m_WaveObject -> SkipFixed (TimerInterval);
-    }
-    
-    return STATUS_SUCCESS;
-
-}
-
-/**************************************************************************
-
-    DESCRIPTOR / DISPATCH LAYOUT
-
-**************************************************************************/
-
-//
-// AudioCapturePinDispatch:
-//
-// This is the dispatch table for the capture pin.  It provides notifications
-// about creation, closure, processing, data formats, etc...
-//
-const
-KSPIN_DISPATCH
-AudioCapturePinDispatch = {
-    CAudioCapturePin::DispatchCreate,       // Pin Create
-    NULL,                                   // Pin Close
-    NULL,                                   // Pin Process
-    NULL,                                   // Pin Reset
-    CAudioCapturePin::DispatchSetFormat,    // Pin Set Data Format
-    CCapturePin::DispatchSetState,          // Pin Set Device State
-    NULL,                                   // Pin Connect
-    NULL,                                   // Pin Disconnect
-    NULL,                                   // Clock Dispatch
-    NULL                                    // Allocator Dispatch
-};
-
-//
-// AudioDefaultAllocatorFraming:
-//
-// A default framing for the audio pin.  In order for this to work properly,
-// the frame size must be at least 1/fps * bytes_per_sec large.  Otherwise,
-// the audio stream will fall behind.  This is dynamically adjusted when
-// the actual pin is created.
-//
-DECLARE_SIMPLE_FRAMING_EX (
-    AudioDefaultAllocatorFraming,
-    STATICGUIDOF (KSMEMORY_TYPE_KERNEL_NONPAGED),
-    KSALLOCATOR_REQUIREMENTF_SYSTEM_MEMORY |
-        KSALLOCATOR_REQUIREMENTF_PREFERENCES_ONLY,
-    25,
-    0,
-    2 * PAGE_SIZE,
-    2 * PAGE_SIZE
-    );
-
-//
-// g_PINNAME_AUDIO_CAPTURE:
-//
-// A GUID identifying the name of the audio capture pin.  I use the standard
-// STATIC_PINNAME_VIDEO_CAPTURE for the video capture pin, but a custom name
-// as defined in avssamp.inf for the audio capture pin.
-//
-GUID g_PINNAME_AUDIO_CAPTURE = 
-    {0xba1184b9, 0x1fe6, 0x488a, 0xae, 0x78, 0x6e, 0x99, 0x7b, 0x2, 0xca, 0xea};
-
-//
-// AudioPinDescriptorTemplate:
-//
-// The template for the audio pin descriptor.  The audio pin on this filter
-// is created dynamically -- if and only if c:\avssamp.wav exists and is
-// a valid and readable wave file.
-//
-const
-KSPIN_DESCRIPTOR_EX
-AudioPinDescriptorTemplate = {
-    //
-    // Audio Capture Pin
-    //
-    &AudioCapturePinDispatch,
-    NULL,
-    { 
-        NULL,                               // Interfaces (NULL, 0 == default)
-        0,                      
-        NULL,                               // Mediums (NULL, 0 == default)
-        0,
-        0,                                  // Range count (filled in later)
-        NULL,                               // Ranges (filled in later)
-        KSPIN_DATAFLOW_OUT,                 // Dataflow
-        KSPIN_COMMUNICATION_BOTH,           // Communication
-        &KSCATEGORY_AUDIO,                  // Category
-        &g_PINNAME_AUDIO_CAPTURE,           // Name
-        0                                   // Reserved
-    },
-    KSPIN_FLAG_FRAMES_NOT_REQUIRED_FOR_PROCESSING | // Flags
-        KSPIN_FLAG_DO_NOT_INITIATE_PROCESSING | 
-        KSPIN_FLAG_PROCESS_IN_RUN_STATE_ONLY |
-        KSPIN_FLAG_FIXED_FORMAT,
-    1,                                      // Instances Possible
-    0,                                      // Instances Necessary
-    &AudioDefaultAllocatorFraming,          // Allocator Framing (filled later)
-    reinterpret_cast <PFNKSINTERSECTHANDLEREX> // Intersect Handler
-        (CAudioCapturePin::IntersectHandler)
-};
-