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Fix for lavc audio provider to prevent it from crashing if it cannot load the file (was causing video playback to crash if no audio was loaded) 

Originally committed to SVN as r963.
This commit is contained in:
Rodrigo Braz Monteiro 2007-03-29 21:05:22 +00:00
parent bc1897049b
commit 0dd4f96757
2 changed files with 74 additions and 68 deletions
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8
aegisub/audio_provider_lavc.cpp
View File

@ -110,11 +110,15 @@ LAVCAudioProvider::LAVCAudioProvider(wxString _filename)
break;
}
}
if (audStream == -1)
if (audStream == -1) {
codecContext = NULL;
throw _T("Could not find an audio stream");
}
AVCodec *codec = avcodec_find_decoder(codecContext->codec_id);
if (!codec)
if (!codec) {
codecContext = NULL;
throw _T("Could not find a suitable audio decoder");
}
if (avcodec_open(codecContext, codec) < 0)
throw _T("Failed to open audio decoder");

134
aegisub/video_provider_lavc.cpp
View File

@ -227,72 +227,74 @@ bool LAVCVideoProvider::GetNextFrame() {
/////////////////////////////////
//// Convert AVFrame to wxBitmap
//wxBitmap LAVCVideoProvider::AVFrameToWX(AVFrame *source, int n) {
// // Get sizes
// int w = codecContext->width;
// int h = codecContext->height;
////#ifdef __WINDOWS__
//// PixelFormat format = PIX_FMT_RGBA32;
////#else
// PixelFormat format = PIX_FMT_RGB24;
////#endif
// unsigned int size1 = avpicture_get_size(codecContext->pix_fmt,display_w,display_h);
// unsigned int size2 = avpicture_get_size(format,display_w,display_h);
//
// // Prepare buffers
// if (!buffer1 || buffer1Size != size1) {
// if (buffer1) delete buffer1;
// buffer1 = new uint8_t[size1];
// buffer1Size = size1;
// }
// if (!buffer2 || buffer2Size != size2) {
// if (buffer2) delete buffer2;
// buffer2 = new uint8_t[size2];
// buffer2Size = size2;
// }
//
// // Resize
// AVFrame *resized;
// bool resize = w != display_w || h != display_h;
// if (resize) {
// // Allocate
// unsigned int resSize = avpicture_get_size(codecContext->pix_fmt,display_w,display_h);
// resized = avcodec_alloc_frame();
// avpicture_fill((AVPicture*) resized, buffer1, codecContext->pix_fmt, display_w, display_h);
//
// // Resize
// ImgReSampleContext *resampleContext = img_resample_init(display_w,display_h,w,h);
// img_resample(resampleContext,(AVPicture*) resized,(AVPicture*) source);
// img_resample_close(resampleContext);
//
// // Set new w/h
// w = display_w;
// h = display_h;
// }
// else resized = source;
//
// // Allocate RGB32 buffer
// AVFrame *frameRGB = avcodec_alloc_frame();
// avpicture_fill((AVPicture*) frameRGB, buffer2, format, w, h);
//
// // Convert to RGB32
// img_convert((AVPicture*) frameRGB, format, (AVPicture*) resized, codecContext->pix_fmt, w, h);
//
// // Convert to wxBitmap
// wxImage img(w, h, false);
// unsigned char *data = (unsigned char *)malloc(w * h * 3);
// memcpy(data, frameRGB->data[0], w * h * 3);
// img.SetData(data);
// if (overlay)
// overlay->Render(img, VFR_Input.GetTimeAtFrame(n));
//
// wxBitmap bmp(img);
//
// av_free(frameRGB);
// if (resized != source)
// av_free(resized);
// return bmp;
//}
/*
wxBitmap LAVCVideoProvider::AVFrameToWX(AVFrame *source, int n) {
// Get sizes
int w = codecContext->width;
int h = codecContext->height;
//#ifdef __WINDOWS__
// PixelFormat format = PIX_FMT_RGBA32;
//#else
PixelFormat format = PIX_FMT_RGB24;
//#endif
unsigned int size1 = avpicture_get_size(codecContext->pix_fmt,display_w,display_h);
unsigned int size2 = avpicture_get_size(format,display_w,display_h);
// Prepare buffers
if (!buffer1 || buffer1Size != size1) {
if (buffer1) delete buffer1;
buffer1 = new uint8_t[size1];
buffer1Size = size1;
}
if (!buffer2 || buffer2Size != size2) {
if (buffer2) delete buffer2;
buffer2 = new uint8_t[size2];
buffer2Size = size2;
}
// Resize
AVFrame *resized;
bool resize = w != display_w || h != display_h;
if (resize) {
// Allocate
unsigned int resSize = avpicture_get_size(codecContext->pix_fmt,display_w,display_h);
resized = avcodec_alloc_frame();
avpicture_fill((AVPicture*) resized, buffer1, codecContext->pix_fmt, display_w, display_h);
// Resize
ImgReSampleContext *resampleContext = img_resample_init(display_w,display_h,w,h);
img_resample(resampleContext,(AVPicture*) resized,(AVPicture*) source);
img_resample_close(resampleContext);
// Set new w/h
w = display_w;
h = display_h;
}
else resized = source;
// Allocate RGB32 buffer
AVFrame *frameRGB = avcodec_alloc_frame();
avpicture_fill((AVPicture*) frameRGB, buffer2, format, w, h);
// Convert to RGB32
img_convert((AVPicture*) frameRGB, format, (AVPicture*) resized, codecContext->pix_fmt, w, h);
// Convert to wxBitmap
wxImage img(w, h, false);
unsigned char *data = (unsigned char *)malloc(w * h * 3);
memcpy(data, frameRGB->data[0], w * h * 3);
img.SetData(data);
if (overlay)
overlay->Render(img, VFR_Input.GetTimeAtFrame(n));
wxBitmap bmp(img);
av_free(frameRGB);
if (resized != source)
av_free(resized);
return bmp;
}
*/
/////////////