/// <summary>
/// Starts the processing.
/// </summary>
void StartProcessing()
{
movie = new Movie();
movie.sourceStream = File.OpenRead(srcPath);
dstStream = File.OpenWrite(dstPath);
remux = new AviRemux();
// create and initialize demux for the source data
movie.demux = Demux.forSource(movie.sourceStream);
movie.demux.Init(movie.sourceStream);
// create video stream and decoder too. without a decoder we can't access pixels to compare
if (!movie.demux.hasVideo)
{
throw new MpException("Remux needs video stream inside an AVI");
}
movie.videoDecoder = VideoDecoder.CreateFor(movie.demux.videoStreamInfo);
movie.videoDecoder.Init(out framebuffer, movie.demux);
// create a remux. this will write into dstStream
bool outputHasAudio = movie.demux.hasAudio && !discardAudio;
remux.Init(dstStream, movie.demux.videoStreamInfo, outputHasAudio ? movie.demux.audioStreamInfo : null);
// create a duplicate finder. most of the options control how the frames are actually compared
options.otherStreamsAvailable = outputHasAudio;
dupFinder = new DuplicateFrameFinder(movie.videoDecoder, framebuffer, 0, movie.demux.videoStreamInfo.frameCount, options);
// if we want a to log the duplicate indexes into a file, then clear the file first
if (!string.IsNullOrEmpty(logDuplicatesPath))
{
File.WriteAllText(logDuplicatesPath, "# Duplicate frame index for " + srcPath + "\n");
}
}
/// <summary>
/// Loads movie with audio. It will be ready for playback
/// </summary>
/// <param name="source">Source</param>
/// <param name="targetFramebuffer">Target framebuffer</param>
/// <param name="targetAudioBuffer">Target audio buffer</param>
/// <param name="loadOptions">Load options</param>
public static Movie Load(MovieSource source, out Texture2D targetFramebuffer, out AudioClip targetAudioBuffer, LoadOptions loadOptions = null)
{
if (loadOptions == null)
{
loadOptions = LoadOptions.Default;
}
if (source.stream == null && source.url == null)
{
throw new MpException("Either source.stream or source.url must be provided");
}
targetFramebuffer = null;
targetAudioBuffer = null;
var movie = new Movie();
movie.sourceStream = source.stream; // can be NULL
// create and initialize demux for the source data
if (source.url != null)
{
movie.demux = loadOptions.demuxOverride != null ? loadOptions.demuxOverride : Streamer.forUrl(source.url);
((Streamer)movie.demux).Connect(source.url, loadOptions);
}
else
{
movie.demux = loadOptions.demuxOverride != null ? loadOptions.demuxOverride : Demux.forSource(source.stream);
movie.demux.Init(source.stream, loadOptions);
}
if (movie.demux.hasVideo && !loadOptions.skipVideo)
{
var vsi = movie.demux.videoStreamInfo;
movie.videoDecoder = VideoDecoder.CreateFor(vsi);
movie.videoDecoder.Init(out targetFramebuffer, movie.demux, loadOptions);
if (loadOptions.preloadVideo)
{
movie.frameUV = UnpackFramesToAtlas(movie.videoDecoder, ref targetFramebuffer, vsi.frameCount);
}
else
{
movie.frameUV = new Rect[1] {
new Rect(0, 0, 1, 1)
};
}
}
if (movie.demux.hasAudio && !loadOptions.skipAudio)
{
movie.audioDecoder = AudioDecoder.CreateFor(movie.demux.audioStreamInfo);
movie.audioDecoder.Init(out targetAudioBuffer, movie.demux, loadOptions);
}
return(movie);
}
/// <summary>
/// Initializes a duplicate frame finder.
/// </summary>
/// <param name="videoDecoder">Video decoder is used to access frame pixel info for comparison</param>
/// <param name="framebuffer">Provide the same framebuffer here that was returned by video decoder init</param>
/// <param name="frameOffset">Frame offset. Usually 0</param>
/// <param name="frameCount">Frame count. Since the decoder doesn't know the frame count, provide it here</param>
/// <param name="options">Options.</param>
public DuplicateFrameFinder (VideoDecoder videoDecoder, Texture2D framebuffer, int frameOffset, int frameCount, Options options = null)
{
if (options == null)
options = Options.Default;
this.options = options;
this.videoDecoder = videoDecoder;
this.framebuffer = framebuffer;
this.frameOffset = frameOffset;
this.frameCount = frameCount;
Reset ();
}
/// <summary>
/// Initializes a duplicate frame finder.
/// </summary>
/// <param name="videoDecoder">Video decoder is used to access frame pixel info for comparison</param>
/// <param name="framebuffer">Provide the same framebuffer here that was returned by video decoder init</param>
/// <param name="frameOffset">Frame offset. Usually 0</param>
/// <param name="frameCount">Frame count. Since the decoder doesn't know the frame count, provide it here</param>
/// <param name="options">Options.</param>
public DuplicateFrameFinder(VideoDecoder videoDecoder, Texture2D framebuffer, int frameOffset, int frameCount, Options options = null)
{
if (options == null)
{
options = Options.Default;
}
this.options = options;
this.videoDecoder = videoDecoder;
this.framebuffer = framebuffer;
this.frameOffset = frameOffset;
this.frameCount = frameCount;
Reset();
}
static Rect[] UnpackFramesToAtlas(VideoDecoder videoDecoder, ref Texture2D framebuffer, int frameCount)
{
if(frameCount < 1) {
throw new MpException("Expecting at least 1 video frame");
}
#if MP_DEBUG
var watch = new System.Diagnostics.Stopwatch ();
watch.Start ();
#endif
// TODO don't use PackTexture? Measure performance with alternative implementation
#if UNITY_STANDALONE || UNITY_WEBPLAYER || UNITY_WEBGL
int maxWH = MAX_DESKTOP_ATLAS_WH;
#else
int maxWH = MAX_MOBILE_ATLAS_WH;
#endif
// Seek to the beginning and decode first frame.
// If it reveals that all the frames won't fit into an atlas, stop.
videoDecoder.Position = 0;
videoDecoder.DecodeNext();
int singleFrameWidth = framebuffer.width;
int singleFrameHeight = framebuffer.height;
int maxTilesX = maxWH / singleFrameWidth;
int maxTilesY = maxWH / singleFrameHeight;
if(frameCount > maxTilesX * maxTilesY)
{
throw new MpException(frameCount + " " + singleFrameWidth + "x" + singleFrameHeight + " video frames can't fit into " +
maxWH + "x" + maxWH + " atlas texture. Consider lowering frame count or resolution, or disable video preloading");
}
// Create and fill an array of frame textures that are needed for Unity's PackTextures.
// Then create an atlas
var frameTextures = new Texture2D[frameCount];
frameTextures[0] = CloneTexture(framebuffer);
for(int i = 1; i < frameCount; i++) {
videoDecoder.DecodeNext();
frameTextures[i] = CloneTexture(framebuffer);
}
Rect[] uvs = framebuffer.PackTextures(frameTextures, 0, maxWH);
// Free temporarily allocated textures
for(int i = 0; i < frameCount; i++) {
#if UNITY_EDITOR
Texture2D.DestroyImmediate(frameTextures[i]);
#else
Texture2D.Destroy(frameTextures[i]);
#endif
}
#if MP_DEBUG
watch.Stop ();
Debug.Log ("Packed " + frameCount + " " + singleFrameWidth + "x" + singleFrameHeight +
" video frames into an atlas (" + framebuffer.width + "x" + framebuffer.height + ")" +
" in " + (watch.Elapsed.TotalMilliseconds * 0.001f) + " seconds");
#endif
return uvs;
}
static Rect[] UnpackFramesToAtlas(VideoDecoder videoDecoder, ref Texture2D framebuffer, int frameCount)
{
if (frameCount < 1)
{
throw new MpException("Expecting at least 1 video frame");
}
#if MP_DEBUG
var watch = new System.Diagnostics.Stopwatch();
watch.Start();
#endif
// TODO don't use PackTexture? Measure performance with alternative implementation
#if UNITY_STANDALONE || UNITY_WEBPLAYER || UNITY_WEBGL
int maxWH = MAX_DESKTOP_ATLAS_WH;
#else
int maxWH = MAX_MOBILE_ATLAS_WH;
#endif
// Seek to the beginning and decode first frame.
// If it reveals that all the frames won't fit into an atlas, stop.
videoDecoder.Position = 0;
videoDecoder.DecodeNext();
int singleFrameWidth = framebuffer.width;
int singleFrameHeight = framebuffer.height;
int maxTilesX = maxWH / singleFrameWidth;
int maxTilesY = maxWH / singleFrameHeight;
if (frameCount > maxTilesX * maxTilesY)
{
throw new MpException(frameCount + " " + singleFrameWidth + "x" + singleFrameHeight + " video frames can't fit into " +
maxWH + "x" + maxWH + " atlas texture. Consider lowering frame count or resolution, or disable video preloading");
}
// Create and fill an array of frame textures that are needed for Unity's PackTextures.
// Then create an atlas
var frameTextures = new Texture2D[frameCount];
frameTextures[0] = CloneTexture(framebuffer);
for (int i = 1; i < frameCount; i++)
{
videoDecoder.DecodeNext();
frameTextures[i] = CloneTexture(framebuffer);
}
Rect[] uvs = framebuffer.PackTextures(frameTextures, 0, maxWH);
// Free temporarily allocated textures
for (int i = 0; i < frameCount; i++)
{
#if UNITY_EDITOR
Texture2D.DestroyImmediate(frameTextures[i]);
#else
Texture2D.Destroy(frameTextures[i]);
#endif
}
#if MP_DEBUG
watch.Stop();
Debug.Log("Packed " + frameCount + " " + singleFrameWidth + "x" + singleFrameHeight +
" video frames into an atlas (" + framebuffer.width + "x" + framebuffer.height + ")" +
" in " + (watch.Elapsed.TotalMilliseconds * 0.001f) + " seconds");
#endif
return(uvs);
}
