Leak_Technologies/VideoTools
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Stabilize unified player preview buffers

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This commit is contained in:
Stu Leak 2026-01-07 02:30:28 -05:00
parent 98bc6f903b
commit 79785b26b3
1 changed files with 13 additions and 16 deletions
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29
internal/player/unified_ffmpeg_player.go
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@ -66,6 +66,7 @@ type UnifiedPlayer struct {
// Buffer management
frameBuffer *sync.Pool
videoBuffer []byte
audioBuffer []byte
audioBufferSize int
@ -97,6 +98,7 @@ func NewUnifiedPlayer(config Config) *UnifiedPlayer {
},
audioBufferSize: 32768, // 170ms at 48kHz for smooth playback
}
player.previewMode = config.PreviewMode
if config.WindowWidth > 0 {
player.windowW = config.WindowWidth
}
@ -691,7 +693,9 @@ func (p *UnifiedPlayer) readVideoFrame() (*image.RGBA, error) {
// Read RGB24 frame data from FFmpeg pipe
frameSize := p.windowW * p.windowH * 3 // RGB24 = 3 bytes per pixel
frameData := make([]byte, frameSize)
if len(p.videoBuffer) != frameSize {
p.videoBuffer = make([]byte, frameSize)
}
// Check for paused state before reading
if p.paused {
@ -699,7 +703,7 @@ func (p *UnifiedPlayer) readVideoFrame() (*image.RGBA, error) {
}
// Read full frame - io.ReadFull ensures we get complete frame
n, err := io.ReadFull(p.videoPipeReader, frameData)
n, err := io.ReadFull(p.videoPipeReader, p.videoBuffer)
if err != nil {
if err == io.EOF || err == io.ErrUnexpectedEOF {
return nil, nil // End of stream
@ -711,21 +715,14 @@ func (p *UnifiedPlayer) readVideoFrame() (*image.RGBA, error) {
return nil, fmt.Errorf("incomplete frame: got %d bytes, expected %d", n, frameSize)
}
// Create RGBA image (Fyne requires RGBA, not RGB)
img := image.NewRGBA(image.Rect(0, 0, p.windowW, p.windowH))
// Convert RGB24 to RGBA (add alpha channel)
for y := 0; y < p.windowH; y++ {
for x := 0; x < p.windowW; x++ {
srcIdx := (y*p.windowW + x) * 3
dstIdx := (y*p.windowW + x) * 4
img.Pix[dstIdx+0] = frameData[srcIdx+0] // R
img.Pix[dstIdx+1] = frameData[srcIdx+1] // G
img.Pix[dstIdx+2] = frameData[srcIdx+2] // B
img.Pix[dstIdx+3] = 255 // A (fully opaque)
}
// Create RGBA image (Fyne requires RGBA, not RGB), reuse buffer.
img := p.frameBuffer.Get().(*image.RGBA)
if img.Rect.Dx() != p.windowW || img.Rect.Dy() != p.windowH {
img.Rect = image.Rect(0, 0, p.windowW, p.windowH)
img.Stride = p.windowW * 4
img.Pix = make([]uint8, p.windowW*p.windowH*4)
}
utils.CopyRGBToRGBA(img.Pix, p.videoBuffer)
// Update frame counter
p.currentFrame++