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mirror of https://github.com/OpenDiablo2/OpenDiablo2 synced 2024-10-31 08:17:21 -04:00
OpenDiablo2/Video/BinkDecoder.go
Tim Sarbin 1afd86005e
Changes necessary for migration to org account (#67)
* Replaced old repo path with org path.

* Added editorconfig. Fixed line endings to LF.

* Fixed travis build badge path
2019-11-02 17:38:39 -04:00

112 lines
3.5 KiB
Go

package Video
import (
"log"
"github.com/OpenDiablo2/OpenDiablo2/Common"
)
type BinkVideoMode uint32
const (
BinkVideoModeNormal BinkVideoMode = 0
BinkVideoModeHeightDoubled BinkVideoMode = 1
BinkVideoModeHeightInterlaced BinkVideoMode = 2
BinkVideoModeWidthDoubled BinkVideoMode = 3
BinkVideoModeWidthAndHeightDoubled BinkVideoMode = 4
BinkVideoModeWidthAndHeightInterlaced BinkVideoMode = 5
)
type BinkAudioAlgorithm uint32
const (
BinkAudioAlgorithmFFT BinkAudioAlgorithm = 0
BinkAudioAlgorithmDCT BinkAudioAlgorithm = 1
)
type BinkAudioTrack struct {
AudioChannels uint16
AudioSampleRateHz uint16
Stereo bool
Algorithm BinkAudioAlgorithm
AudioTrackId uint32
}
type BinkDecoder struct {
videoCodecRevision byte
fileSize uint32
numberOfFrames uint32
largestFrameSizeBytes uint32
VideoWidth uint32
VideoHeight uint32
FPS uint32
FrameTimeMS uint32
streamReader *Common.StreamReader
VideoMode BinkVideoMode
HasAlphaPlane bool
Grayscale bool
AudioTracks []BinkAudioTrack
FrameIndexTable []uint32 // Mask bit 0, as this is defined as a keyframe
frameIndex uint32
}
func CreateBinkDecoder(source []byte) *BinkDecoder {
result := &BinkDecoder{
streamReader: Common.CreateStreamReader(source),
}
result.loadHeaderInformation()
return result
}
func (v *BinkDecoder) GetNextFrame() {
//v.streamReader.SetPosition(uint64(v.FrameIndexTable[i] & 0xFFFFFFFE))
lengthOfAudioPackets := v.streamReader.GetUInt32() - 4
samplesInPacket := v.streamReader.GetUInt32()
v.streamReader.SkipBytes(int(lengthOfAudioPackets))
log.Printf("Frame %d:\tSamp: %d", v.frameIndex, samplesInPacket)
v.frameIndex++
}
func (v *BinkDecoder) loadHeaderInformation() {
v.streamReader.SetPosition(0)
headerBytes, _ := v.streamReader.ReadBytes(3)
if string(headerBytes) != "BIK" {
log.Fatal("Invalid header for bink video")
}
v.videoCodecRevision = v.streamReader.GetByte()
v.fileSize = v.streamReader.GetUInt32()
v.numberOfFrames = v.streamReader.GetUInt32()
v.largestFrameSizeBytes = v.streamReader.GetUInt32()
v.streamReader.SkipBytes(4) // Number of frames again?
v.VideoWidth = v.streamReader.GetUInt32()
v.VideoHeight = v.streamReader.GetUInt32()
fpsDividend := v.streamReader.GetUInt32()
fpsDivider := v.streamReader.GetUInt32()
v.FPS = uint32(float32(fpsDividend) / float32(fpsDivider))
v.FrameTimeMS = 1000 / v.FPS
videoFlags := v.streamReader.GetUInt32()
v.VideoMode = BinkVideoMode((videoFlags >> 28) & 0x0F)
v.HasAlphaPlane = ((videoFlags >> 20) & 0x1) == 1
v.Grayscale = ((videoFlags >> 17) & 0x1) == 1
numberOfAudioTracks := v.streamReader.GetUInt32()
v.AudioTracks = make([]BinkAudioTrack, numberOfAudioTracks)
for i := 0; i < int(numberOfAudioTracks); i++ {
v.streamReader.SkipBytes(2) // Unknown
v.AudioTracks[i].AudioChannels = v.streamReader.GetUInt16()
}
for i := 0; i < int(numberOfAudioTracks); i++ {
v.AudioTracks[i].AudioSampleRateHz = v.streamReader.GetUInt16()
flags := v.streamReader.GetUInt16()
v.AudioTracks[i].Stereo = ((flags >> 13) & 0x1) == 1
v.AudioTracks[i].Algorithm = BinkAudioAlgorithm((flags >> 12) & 0x1)
}
for i := 0; i < int(numberOfAudioTracks); i++ {
v.AudioTracks[i].AudioTrackId = v.streamReader.GetUInt32()
}
v.FrameIndexTable = make([]uint32, v.numberOfFrames+1)
for i := 0; i < int(v.numberOfFrames+1); i++ {
v.FrameIndexTable[i] = v.streamReader.GetUInt32()
}
}