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`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`1
`++++++¬
`…
`¬2
`Copyright (c) 2001 BeComm Corporation¬
`3
`¬4
`Filename:¬
`5
`¬6
` avidemux.c¬
`7
`¬8
`Group Overview:¬
`9
`¬10
` Extracts the incoming avi data stream into audio and¬
`11
` video. Video is sent along the main path, while audio¬
`12
` is forked onto a new child path.¬
`13
`¬14
`Owner:¬
`15
`¬16
` Guy Carpenter (guyc) 17-Jul-2001¬
`17
`¬18
`-------------------------------------------------------------------------
`19
`----*/¬
`…
`¬20
`#define SOS_DEBUG_ZONE "/beads/avidemux"¬
`21
`¬22
`#include <sosstrings.h>¬
`23
`#include <sosmultimedia.h>¬
`24
`#include "riffparser.h"¬
`25
`#include "aviformat.h"¬
`26
`#include "wavformat.h"¬
`27
`#include "bmpformat.h"¬
`28
`¬29
`SOS_SOURCE_VERSION (¬
`30
` "$Id: avidemux.c,v 1.36 2001/10/02 21:07:24 guyc Exp $"¬
`31
`);¬
`32
`¬33
`#define BEAD_NAME "avidemux"¬
`34
`¬35
`/*¬
`36
`* Name of audio context to use if we get a pcm audio stream¬
`37
`*/¬
`38
`#define AUDIOCONTEXT_CLASS "pcmcontext"¬
`39
`/*¬
`40
`* Name of video context to use if we get a bmp audio stream.¬
`41
`*/¬
`42
`#define VIDEOCONTEXT_CLASS "rgbcontext"¬
`43
`
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`

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`
`/*¬
`44
` * Name of sample clock class¬
`45
` */¬
`46
`#define SAMPLECLOCK_CLASS "sampleclock"¬
`47
`¬48
`/*¬
`49
` * Specify level of detail in debug prints, from¬
`50
` * minimum to maximum the useful values are:¬
`51
` * 0 : no output¬
`52
` * SOS_DEBUG_LEVEL_FuncTrace : basic procedure entry logging¬
`53
` * SOS_DEBUG_LEVEL_DataTrace : data format logging¬
`54
` * SOS_DEBUG_LEVEL_Detail : per-chunk logging¬
`55
` */¬
`56
`#define DEBUG_LEVEL SOS_DEBUG_LEVEL_DataTrace¬
`57
`¬58
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`59
`++++++¬
`…
`Configuration¬
`60
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`61
`++++*/¬
`…
`¬62
`/*¬
`63
` * The following parameters should really be set through¬
`64
` * the InitContext.¬
`65
` */¬
`66
`¬67
`/*¬
`68
` * Maximum queue size (in messages) of the audio path¬
`69
` */¬
`70
`#define AUDIO_MAX_QUEUE_LENGTH "50"¬
`71
`/*¬
`72
` * play only 1 in N frame - useful on slow machines.¬
`73
` */¬
`74
`#define VIDEO_DECIMATE 1 /* 1 means play every frame */¬
`75
`¬76
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`77
`++++++¬
`…
`Structures¬
`78
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`79
`++++*/¬
`…
`¬80
`/*¬
`81
` * AVIDEMUX_CONTEXT is the session context for the bead. Each¬
`82
` * active session of this bead will get it's own copy of this¬
`83
` * structure.¬
`84
`
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` */¬
`85
`typedef struct _AVIDEMUX_CONTEXT {¬
`86
` RIFF_CONTEXT * Riff; /* riff parser */¬
`87
` RIFF_CHUNK * Chunk; /* current riff chunk */¬
`88
` SOS_UINT32 StreamIndex; /* counts streams in avi */¬
`89
` ¬
`90
` SOS_UINT32 VidStreamId; /* fourcc identifier */¬
`91
` SOS_UINT32 VidStreamIndex; /* index of video stream */¬
`92
` SOS_UINT32 VidFrameNumber; /* count of sent frames */¬
`93
` BMP_FORMAT VidStreamFormat;/* bmp format header */¬
`94
` SOS_UINT32 VidFrameRate; /* frame rate numerator */¬
`95
` SOS_UINT32 VidFrameRateDivisor; /* frame rate div */¬
`96
` SOS_IVIDEOCONTEXT * IVideoContext; /* progagates format */¬
`97
`¬98
` SOS_PATH * AudioPath; /* path for audio output */¬
`99
` SOS_UINT32 AudStreamId; /* fourcc identifier */¬
`100
` SOS_UINT32 AudStreamIndex; /* index of audio stream */¬
`101
` WAV_FORMAT AudStreamFormat;/* audio format from wav */¬
`102
` SOS_IAUDIOCONTEXT * IAudioContext; /* propagates format */¬
`103
`¬
`104
` SOS_ISAMPLECLOCK * IAudioClock; /* master sample clock */¬
`105
` SOS_ISAMPLECLOCK * IVideoClock; /* slave sample clock */¬
`106
`¬
`107
` SOS_UINT32 AudioSampleCount;/* total samples sent */¬
`108
` SOS_UINT32 AudioSampleBytes;/* bytes per sample */¬
`109
`} AVIDEMUX_CONTEXT;¬
`110
`¬
`111
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`112
`++++++¬
`…
`Debug Output Functions¬
`113
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`114
`++++*/¬
`…
`¬
`115
`/*¬
`116
` * Print out the avi header for debugging¬
`117
` */¬
`118
`static¬
`119
`void¬
`120
`DumpAviHeader(¬
`121
` AVI_HEADER * AviHeader¬
`122
`)¬
`123
`{¬
`124
` SOS_DEBUGOUT_DATA_TRACE(¬
`125
` "MicroSecPerFrame %u\n"¬
`126
` "MaxBytesPerSec %u\n"¬
`127
`
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`

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`
` "Reserved1 %u\n"¬
` "Flags %u\n"¬
` "TotalFrames %u\n"¬
` "InitialFrames %u\n"¬
` "Streams %u\n"¬
` "SuggestedBufferSize %u\n"¬
` "Width %u\n"¬
` "Height %u\n"¬
` "Scale %u\n"¬
` "Rate %u\n"¬
` "Start %u\n"¬
` "Length %u\n\n",¬
` AviHeader->MicroSecPerFrame,¬
` AviHeader->MaxBytesPerSec,¬
` AviHeader->Reserved1,¬
` AviHeader->Flags,¬
` AviHeader->TotalFrames,¬
` AviHeader->InitialFrames,¬
` AviHeader->Streams,¬
` AviHeader->SuggestedBufferSize,¬
` AviHeader->Width,¬
` AviHeader->Height,¬
` AviHeader->Scale,¬
` AviHeader->Rate,¬
` AviHeader->Start,¬
` AviHeader->Length¬
` );¬
`}¬
`¬
`/*¬
` * Print out the avi stream header for debugging¬
` */¬
`static¬
`void¬
`DumpAviStreamHeader(¬
` AVI_STREAMHEADER *AviStreamHeader¬
`)¬
`{¬
` SOS_DEBUGOUT_DATA_TRACE(¬
` "Type %.4s [%lx]\n"¬
` "Handler %.4s\n"¬
` "Flags %u\n"¬
` "Reserved1 %u\n"¬
` "InitialFrames %u\n"¬
` "Scale %u\n"¬
`
`Page 4 of 27
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`

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`
` "Rate %u\n"¬
` "Length %u\n"¬
` "SuggestedBufferSize %u\n"¬
` "Quality %u\n"¬
` "SampleSize %u\n"¬
` "Reserved2 %u\n"¬
` "Reserved3 %u\n\n",¬
` &AviStreamHeader->Type,¬
` AviStreamHeader->Type,¬
` &AviStreamHeader->Handler,¬
` AviStreamHeader->Flags,¬
` AviStreamHeader->Reserved1,¬
` AviStreamHeader->InitialFrames,¬
` AviStreamHeader->Scale,¬
` AviStreamHeader->Rate,¬
` AviStreamHeader->Start,¬
` AviStreamHeader->Length,¬
` AviStreamHeader->SuggestedBufferSize,¬
` AviStreamHeader->Quality,¬
` AviStreamHeader->SampleSize,¬
` AviStreamHeader->Reserved2,¬
` AviStreamHeader->Reserved3¬
` );¬
`}¬
`¬
`/*¬
` * Print out the wav format header for debugging¬
` */¬
`static¬
`void¬
`DumpWavFormat(¬
` WAV_FORMAT * WavFormat¬
`)¬
`{¬
` ¬
` SOS_DEBUGOUT_DATA_TRACE(¬
` "WAV Header:\n"¬
` "FormatTag %u\n"¬
` "Channels %u\n"¬
` "SamplesPerSec %lu\n"¬
` "AvgBytesPerSec %lu\n"¬
` "BlockAlign %u\n"¬
` "BitsPerSample %u\n"¬
` "Size %u\n\n",¬
` WavFormat->FormatTag,¬
`
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`

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`
` WavFormat->Channels,¬
` WavFormat->SamplesPerSec,¬
` WavFormat->AvgBytesPerSec,¬
` WavFormat->BlockAlign,¬
` WavFormat->BitsPerSample,¬
` WavFormat->Size¬
` );¬
`}¬
`¬
`/*¬
` * Print out the wav format header for debugging¬
` */¬
`static¬
`void¬
`DumpBmpFormat(¬
` BMP_FORMAT * BmpFormat¬
`)¬
`{¬
` ¬
` SOS_DEBUGOUT_DATA_TRACE(¬
` "BMP Header:\n"¬
` "Size %lu\n"¬
` "Width %ld\n"¬
` "Height %ld\n"¬
` "Planes %u\n"¬
` "BitCount %u\n"¬
` "Compression %lu\n"¬
` "SizeImage %lu\n"¬
` "XPixelsPerMeter %d\n"¬
` "YPixelsPerMeter %d\n"¬
` "ClrUsed %lu\n"¬
` "ClrImportant %lu\n\n",¬
` BmpFormat->Size,¬
` BmpFormat->Width,¬
` BmpFormat->Height,¬
` BmpFormat->Planes,¬
` BmpFormat->BitCount,¬
` BmpFormat->Compression,¬
` BmpFormat->SizeImage,¬
` BmpFormat->XPixelsPerMeter,¬
` BmpFormat->YPixelsPerMeter,¬
` BmpFormat->ClrUsed,¬
` BmpFormat->ClrImportant¬
` );¬
`}¬
`
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`

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`
`¬
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`++++++¬
`¬
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`++++*/¬
`¬
`/*++¬
`Routine Name:¬
`¬
` AviDemux_AudioFormatSet¬
`¬
`Routine Description:¬
`¬
` Used only for raw pcm audio streams. Creates an audio context¬
` containing the audio format. This is stored in the path context¬
` for use by subsequent beads to determine the format of the audio¬
` data they are receiving.¬
`¬
`Parameters:¬
`¬
` AVIDEMUX_CONTEXT* Context - [in]¬
` The session context.¬
`¬
` SOS_PATH* Path - [in]¬
` The path to set the attribute for.¬
`¬
`Return Value:¬
`¬
` SOS_STATUS - ¬
` SOS_Success if everything succeeded.¬
`¬
` SOS_True if more data is required to determine the audio format.¬
`¬
` other error codes are returned if an error occuerd¬
`¬
`--*/¬
`¬
`#define SOS_IAUDIOCONTEXT_CREATE(NAME) \¬
`¬
`¬
`static¬
`SOS_STATUS¬
`AviDemux_AudioFormatSet(¬
` AVIDEMUX_CONTEXT* Context,¬
`
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`
` SOS_PATH* Path¬
`)¬
`{¬
` SOS_STATUS status = SOS_Success;¬
`¬
` /*¬
` * Create a new audio context.¬
` */¬
`¬
` Context->IAudioContext = SOS_Interface_CreateFromClassName(¬
` AUDIOCONTEXT_CLASS,¬
` SOS_IAUDIOCONTEXT_ID¬
` );¬
`¬
` SOS_ASSERT_ASSUMPTION(¬
` Context->IAudioContext!=NULL,¬
` "Could not create new audio context"¬
` );¬
`¬
` if (Context->IAudioContext) {¬
` SOS_AUDIO_FORMAT format;¬
` format.Frequency = Context->AudStreamFormat.SamplesPerSec;¬
` format.Channels = Context->AudStreamFormat.Channels;¬
` format.SampleBits= Context->AudStreamFormat.BitsPerSample;¬
`¬
` SOS_DEBUGOUT_MAJOR_EVENT(¬
` "AVI pcm format is %u/%u/%u\n",¬
` format.Frequency,¬
` format.SampleBits,¬
` format.Channels¬
` );¬
`¬
` Context->AudioSampleBytes =¬
` (format.SampleBits+SOS_BITSPERBYTE-1)/¬
` SOS_BITSPERBYTE*format.Channels;¬
`¬
` status = Context->IAudioContext->FormatSet(¬
` Context->IAudioContext,¬
` &format¬
` );¬
`¬
` /*¬
` * Store the audio context as a path attribute¬
` */¬
`¬
`
`Page 8 of 27
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`

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`
` if (SOS_SUCCEEDED(status)) {¬
` status = SOS_Path_AttributeSet(¬
` Path,¬
` SOS_AUDIOCONTEXT_NAME,¬
` SOS_Interface_ObjectPeek(Context->IAudioContext)¬
` );¬
` }¬
`¬
` /*¬
` * Initialize the audio clock and store it in the¬
` * audio path as the master clock.¬
` */¬
`¬
`// if (SOS_SUCCEEDED(status)) {¬
`// Context->IAudioClock->FrequencySet(¬
`// Context->IAudioClock,¬
`// format.Frequency,¬
`// SOS_MSPERSECOND¬
`// );¬
`// }¬
`¬
` } else {¬
` /* error - couldn't create audio context */¬
` status = SOS_Error;¬
` }¬
` /*¬
` * If everything succeeded we retain a reference to the¬
` * audio context in our context struct.¬
` */¬
`¬
` return status;¬
`}¬
`¬
`/*¬
` * Create the audio path, assign a content-type¬
` * base on the audio stream format header, and¬
` * set the maximum queue length.¬
` */¬
`static¬
`SOS_STATUS¬
`AudioPrepare(¬
` AVIDEMUX_CONTEXT * Context,¬
` SOS_PATH * ParentPath¬
`)¬
`{¬
`
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`
` SOS_STATUS status;¬
` SOS_REGOBJECT *contentType;¬
` const char *contentTypeString;¬
`¬
` /*¬
` * Create a new path on which to send audio¬
` */¬
`¬
` Context->AudioPath = SOS_Path_Create(ParentPath);¬
`¬
` /*¬
` * Determine the audio format of the audio stream¬
` */¬
`¬
` switch (Context->AudStreamFormat.FormatTag) {¬
` case WAVE_FORMAT_MPEGLAYER3:¬
` contentTypeString = "audio/mp3";¬
` break;¬
` case WAVE_FORMAT_PCM:¬
` contentTypeString = "audio/pcm";¬
` AviDemux_AudioFormatSet(Context, Context->AudioPath);¬
` break;¬
` default:¬
` contentTypeString = "audio/unknown";¬
` SOS_ASSERT_ASSUMPTION(0,"Unsupported audio format");¬
` break;¬
` }¬
`¬
` SOS_DEBUGOUT_FUNC_TRACE("Audio format is %s\n",contentTypeString);¬
`¬
` /*¬
` * Add the format to the path context for the audio path to¬
` * allow mapping to find the correct codecs enroute to the speaker¬
` */¬
` ¬
` contentType = SOS_String_CreateFromString(contentTypeString);¬
`¬
` if (contentType) {¬
` status = SOS_Path_AttributeSet(¬
` Context->AudioPath,¬
` "Content-Type",¬
` contentType);¬
` SOS_RegObject_Release(contentType);¬
`¬
` /*¬
`
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`
` * The audio path is seeded with the same clock for¬
` * both master and render clocks. The audio beads probably wont¬
` * even look at the master clock, but if they do¬
` * they will find that it is always right on time :-)¬
` */¬
`¬
` status = SOS_Path_AttributeSet(¬
` Context->AudioPath,¬
` SOS_MASTERCLOCK_NAME,¬
` SOS_Interface_ObjectPeek(Context->IAudioClock)¬
` );¬
`¬
` status = SOS_Path_AttributeSet(¬
` Context->AudioPath,¬
` SOS_RENDERCLOCK_NAME,¬
` SOS_Interface_ObjectPeek(Context->IAudioClock)¬
` );¬
` ¬
`¬
` /*¬
` * Set the maximum number of messages that can be enqueued on¬
` * a path before it will block pending delivery. Note that¬
` * there is only a queue at the beginning of each path.¬
` * Mid-path message sends are synchronously delivered.¬
` */¬
`¬
` status = SOS_Path_QosParameterSet(¬
` Context->AudioPath,¬
` SOS_PATH_QOS_MaxQueueLength,¬
` AUDIO_MAX_QUEUE_LENGTH¬
` );¬
` } else {¬
` status = SOS_ErrorResourceAllocation;¬
` }¬
` ¬
` return status;¬
`}¬
`¬
`/*¬
` * Create the video context and fill in values¬
` */¬
`static¬
`SOS_STATUS¬
`VideoPrepare(¬
` AVIDEMUX_CONTEXT * Context,¬
`
`Page 11 of 27
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`Sonos v. Implicit, IPR2018-0766, -0767
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`

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`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
`Page 12/27
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`
` SOS_PATH * VideoPath¬
`)¬
`{¬
` SOS_STATUS status;¬
` ¬
` Context->IVideoContext = SOS_Interface_CreateFromClassName(¬
` VIDEOCONTEXT_CLASS,¬
` SOS_IVIDEOCONTEXT_ID¬
` );¬
`¬
` SOS_ASSERT_ASSUMPTION(¬
` Context->IVideoContext!=NULL,¬
` "Could not create new video context"¬
` );¬
`¬
` if (Context->IVideoContext) {¬
` SOS_VIDEO_FORMAT format;¬
` format.Width = Context->VidStreamFormat.Width;¬
` format.Height = Context->VidStreamFormat.Height;¬
` format.Encoding = Context->VidStreamFormat.Compression;¬
` format.FrameRate = Context->VidFrameRate;¬
` format.FrameRateDivisor = Context->VidFrameRateDivisor *
`SOS_MSPERSECOND;¬
`¬
` status = Context->IVideoContext->FormatSet(¬
` Context->IVideoContext,¬
` &format¬
` );¬
`¬
` if (SOS_SUCCEEDED(status)) {¬
` status = SOS_Path_AttributeSet(¬
` VideoPath,¬
` SOS_VIDEOCONTEXT_NAME,¬
` SOS_Interface_ObjectPeek(Context->IVideoContext)¬
` );¬
` }¬
` } else {¬
` status = SOS_Error;¬
` }¬
`¬
` return status;¬
`}¬
`¬
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`++++++¬
`
`Page 12 of 27
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`Sonos v. Implicit, IPR2018-0766, -0767
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`

`

`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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`570
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`
`¬
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`++++*/¬
`¬
`/*¬
` * Returns true if the data for the¬
` * next chunk is ready to be read.¬
` */¬
`¬
`SOS_BOOLEAN¬
`ChunkDataReady(¬
` AVIDEMUX_CONTEXT * Context¬
`)¬
`{¬
` size_t available = 0;¬
` SOS_BOOLEAN ready = SOS_False;¬
`¬
` if (Context->Chunk) {¬
` Riff_DecodeDataAvailable(¬
` Context->Riff,¬
` &available¬
` );¬
` ready = available>=Context->Chunk->Size;¬
` }¬
`¬
` return ready;¬
`}¬
`¬
`void¬
`FactorReduce(¬
` SOS_UINT32 *Numerator,¬
` SOS_UINT32 *Denominator¬
`)¬
`{¬
` SOS_UINT32 numerator = *Numerator;¬
` SOS_UINT32 denominator = *Denominator;¬
` SOS_UINT32 factor=2;¬
`¬
` while (factor<=numerator && factor<=numerator) {¬
` if (!(numerator%factor) &&¬
` !(denominator%factor)) {¬
` numerator/=factor;¬
` denominator/=factor;¬
` } else {¬
` if (factor>2) factor++;¬
`
`Page 13 of 27
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`Sonos v. Implicit, IPR2018-0766, -0767
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`

`

`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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`
` factor++;¬
` }¬
` }¬
`¬
` SOS_Debug_StringPrint(¬
` "Rationalized %lu/%lu to %lu/%lu\n",¬
` *Numerator,¬
` *Denominator,¬
` numerator,¬
` denominator¬
` );¬
`¬
` *Numerator = numerator;¬
` *Denominator = denominator;¬
`}¬
`¬
`/*¬
` * Acts on the next chunk in the data stream.¬
` * Assumes the chunk header has already been¬
` * read into Context->Chunk, and that the entire¬
` * data block associated with the chunk is available¬
` * to be read.¬
` */¬
`¬
`void¬
`ChunkProcess(¬
` AVIDEMUX_CONTEXT * Context,¬
` SOS_PATH * Path¬
`)¬
`{¬
` RIFF_CHUNK * chunk = Context->Chunk;¬
`¬
` SOS_UINT32 maskedType = chunk->TypeVal & AVI_CHUNKTYPE_STREAMIDMASK;¬
`¬
` if (maskedType == Context->AudStreamId) {¬
` /*¬
` * got an audio frame,¬
` * send it along the audio path.¬
` */¬
` SOS_MESSAGE *message;¬
`¬
` SOS_DEBUGOUT_DETAIL("Processing audio chunk\n");¬
` ¬
` Riff_DecodeMessageGet(¬
` Context->Riff,¬
`
`Page 14 of 27
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`

`

`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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`
` &message,¬
` chunk->Size,¬
` NULL¬
` );¬
`¬
` /*¬
` * Note that only bare PCM needs to be¬
` * packed.¬
` */¬
` if (Context->IAudioContext) {¬
`¬
` Context->IAudioContext->TimeStampSet(¬
` Context->IAudioContext,¬
` Context->AudioSampleCount¬
` );¬
` Context->IAudioContext->Pack(¬
` Context->IAudioContext,¬
` message¬
` );¬
` Context->AudioSampleCount+=¬
` chunk->Size / Context->AudioSampleBytes;¬
` }¬
`¬
` if (1) {¬
` SOS_Path_MessageSend(¬
` Context->AudioPath,¬
` message¬
` );¬
` } else {¬
` SOS_Message_Destroy(message);¬
` }¬
` ¬
` SOS_Sleep(0); /* give audio path a chance to process */¬
` ¬
` } else if (maskedType == Context->VidStreamId) {¬
` /*¬
` * got a video frame,¬
` * Send it along our own path.¬
` */¬
` Context->VidFrameNumber++;¬
`¬
` if ((Context->VidFrameNumber%VIDEO_DECIMATE)==0) {¬
`¬
` SOS_MESSAGE *message;¬
`¬
`
`Page 15 of 27
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`Sonos v. Implicit, IPR2018-0766, -0767
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`

`

`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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`
` SOS_DEBUGOUT_DETAIL("Processing video chunk\n");¬
`¬
` Riff_DecodeMessageGet(¬
` Context->Riff,¬
` &message,¬
` chunk->Size,¬
` NULL¬
` );¬
`¬
` Context->IVideoContext->Pack(¬
` Context->IVideoContext,¬
` message,¬
` NULL,¬
` Context->VidFrameNumber¬
` );¬
` ¬
` SOS_Path_MessageSend(¬
` Path,¬
` message¬
` );¬
`¬
` } else {¬
` SOS_DEBUGOUT_DETAIL("Skipping video chunk\n");¬
` }¬
`¬
`¬
` } else if (chunk->TypeVal==AVI_CHUNKTYPE_avih) {¬
` /*¬
` * avih chunk.¬
` * We don't use the information within, but we¬
` * dump the contents.¬
` */¬
` AVI_HEADER aviHeader;¬
`¬
` SOS_DEBUGOUT_DETAIL("avih chunk\n");¬
` ¬
` Riff_DecodeDataGet(¬
` Context->Riff,¬
` &aviHeader,¬
` sizeof(aviHeader),¬
` NULL¬
` );¬
`¬
` DumpAviHeader(&aviHeader);¬
` ¬
`
`Page 16 of 27
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`Sonos v. Implicit, IPR2018-0766, -0767
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`

`

`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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`
` } else if (chunk->TypeVal==AVI_CHUNKTYPE_strh) {¬
` /*¬
` * a strh chunk identifies auds and vids.¬
` * We need to examine it to get the stream id¬
` * for the video and audio streams.¬
` */¬
` AVI_STREAMHEADER streamHeader;¬
` ¬
` SOS_DEBUGOUT_DETAIL("strh chunk\n");¬
`¬
` Riff_DecodeDataGet(¬
` Context->Riff,¬
` &streamHeader,¬
` sizeof(streamHeader),¬
` NULL¬
` );¬
`¬
` Context->StreamIndex++;¬
`¬
` DumpAviStreamHeader(&streamHeader);¬
` ¬
` if (streamHeader.Type == AVI_STREAMHEADER_TYPE_vids) {¬
` /*¬
` * found a video stream.¬
` * Take the first one we find.¬
` */¬
` SOS_DEBUGOUT_DETAIL("vids chunk\n");¬
`¬
` if (!Context->VidStreamId) {¬
` Context->VidStreamIndex = Context->StreamIndex;¬
` Context->VidStreamId =
`AVI_STREAMLABEL(Context->StreamIndex-1);¬
`¬
` /*¬
` * get the frame rate from here, store it in the video
`clock¬
` */¬
` Context->VidFrameRate = streamHeader.Rate;¬
` Context->VidFrameRateDivisor = streamHeader.Scale;¬
`// {¬
`// SOS_UINT32 numerator = streamHeader.Rate;¬
`// SOS_UINT32 denominator = streamHeader.Scale;¬
`// Context->IVideoClock->FrequencySet(¬
`// Context->IVideoClock,¬
`// streamHeader.Rate,¬
`
`Page 17 of 27
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`

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`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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`
`// streamHeader.Scale * SOS_MSPERSECOND *
`VIDEO_DECIMATE¬
`// );¬
`// }¬
`¬
` /*¬
` * The current Path is the video path. We store the
`video¬
` * clock as the render clock, and the audio clock as the¬
` * master clock. This will cause the video to sync¬
` * to the audio.¬
` */¬
`¬
` SOS_Path_AttributeSet(¬
` Path,¬
` SOS_RENDERCLOCK_NAME,¬
` SOS_Interface_ObjectPeek(Context->IVideoClock)¬
` );¬
`¬
` SOS_Path_AttributeSet(¬
` Path,¬
` SOS_MASTERCLOCK_NAME,¬
` SOS_Interface_ObjectPeek(Context->IAudioClock)¬
` );¬
` }¬
` ¬
` } else if (streamHeader.Type == AVI_STREAMHEADER_TYPE_auds) {¬
` /*¬
` * found an audio stream.¬
` * Take the first one we find.¬
` */¬
` SOS_DEBUGOUT_DETAIL("auds chunk\n");¬
`¬
` if (!Context->AudStreamId) {¬
` Context->AudStreamIndex = Context->StreamIndex;¬
` Context->AudStreamId =
`AVI_STREAMLABEL(Context->StreamIndex-1);¬
` }¬
` }¬
`¬
` } else if (chunk->TypeVal==AVI_CHUNKTYPE_strf) {¬
` /*¬
` * a strf chunk identifies the specific format¬
` * of the audio or video stream.¬
` */¬
`
`Page 18 of 27
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`

`

`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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`
` if (Context->StreamIndex==Context->AudStreamIndex) {¬
` /*¬
` * It appears to be the format for the first audio stream.¬
` * We read it into our own context.¬
` */¬
` SOS_DEBUGOUT_DETAIL("strf chunk for audio stream\n");¬
`¬
` Riff_DecodeDataGet(¬
` Context->Riff,¬
` &(Context->AudStreamFormat),¬
` sizeof(Context->AudStreamFormat),¬
` NULL¬
` );¬
` ¬
` DumpWavFormat(&(Context->AudStreamFormat));¬
`¬
` AudioPrepare(Context, Path);¬
` ¬
` } else if (Context->StreamIndex==Context->VidStreamIndex) {¬
` /*¬
` * It appears to be the format for the first video stream.¬
` * We sent it along our own path untouched.¬
` */¬
`¬
`// SOS_MESSAGE *message;¬
`¬
` SOS_DEBUGOUT_DETAIL("strf chunk for video stream\n");¬
`¬
` Riff_DecodeDataGet(¬
` Context->Riff,¬
` &(Context->VidStreamFormat),¬
` sizeof(Context->VidStreamFormat),¬
` NULL¬
` );¬
`¬
` DumpBmpFormat(&(Context->VidStreamFormat));¬
` VideoPrepare(Context, Path);¬
`¬
`/* Riff_DecodeMessageGet(¬
` Context->Riff,¬
` &message,¬
` chunk->Size,¬
` NULL¬
` );¬
`¬
`
`Page 19 of 27
`
`Implicit Exhibit 2043
`Sonos v. Implicit, IPR2018-0766, -0767
`
`

`

`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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`
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`
` SOS_Path_MessageSend(Path, message);¬
`*/¬
` } else {¬
` SOS_DEBUGOUT_DATA_TRACE(¬
` "Unused strf chunk [id=%d]\n",¬
` Context->StreamIndex);¬
` }¬
` ¬
` } else {¬
` SOS_DEBUGOUT_DATA_TRACE("Unused chunk [%.4s]\n",chunk->Type);¬
` }¬
`}¬
`¬
`¬
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`++++++¬
`Handlers¬
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`++++*/¬
`/*¬
` * We don't have any particular identification for¬
` * this session, so we just assign a unique key.¬
` */¬
`static¬
`SOS_STATUS¬
`AviDemux_KeyCreate(¬
` SOS_PATH *Path,¬
` SOS_MESSAGE *Message¬
`)¬
`{¬
` static int s_UniqueId = 0;¬
`¬
` SOS_REGOBJECT* uniqueSessionKey =¬
` SOS_Int32_Create(s_UniqueId++);¬
`¬
` SOS_DEBUGOUT_FUNC_TRACE("AviDemux_KeyCreate called\n");¬
`¬
` SOS_Path_SessionKeySet(Path, uniqueSessionKey);¬
` SOS_RegObject_Release(uniqueSessionKey);¬
`¬
` return SOS_PathBuild_Stop;¬
`}¬
`¬
`/*¬
` * This is the handler that gets called by Strings when¬
`
`Page 20 of 27
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`Sonos v. Implicit, IPR2018-0766, -0767
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`

`

`/Users/implicit/Desktop/Source Code/2001.11.01/be…/…/main/avidemux.c
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