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Applied perchr's patch for a progress bar while loading keyframes on posix.

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Originally committed to SVN as r1646.
This commit is contained in:
Rodrigo Braz Monteiro 2007-11-01 18:14:56 +00:00
parent 4b607e9454
commit 76da71cef4
1 changed files with 23 additions and 4 deletions
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27
aegisub/lavc_keyframes.cpp
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@ -36,6 +36,7 @@
///////////
// Headers
#include "dialog_progress.h"
#include "lavc_keyframes.h"
///////////////
@ -84,14 +85,28 @@ LAVCKeyFrames::~LAVCKeyFrames() {
// Parse file for keyframes
wxArrayInt LAVCKeyFrames::GetKeyFrames() {
wxArrayInt keyframes;
AVPacket packet;
int total_frames = stream->duration;
register unsigned int frameN = 0; // Number of parsed frames
while (av_read_frame(file->fctx, &packet) >= 0) {
volatile bool canceled = false;
DialogProgress *progress = new DialogProgress(NULL,_("Load keyframes"),&canceled,_("Reading keyframes from video"),0,total_frames);
progress->Show();
progress->SetProgress(0,1);
while (av_read_frame(file->fctx, &packet) >= 0 && !canceled) {
// Check if packet is part of video stream
if (packet.stream_index == streamN) {
// Increment number of passed frames
++frameN;
/* Might need some adjustments here, to make it
appear as fluid as wanted. Just copied 2points thingy,
and reduced it a bit */
if ((frameN & (1024 - 1)) == 0)
progress->SetProgress(frameN,total_frames);
// Decode frame
int frameFinished;
avcodec_decode_video(codecContext, frame, &frameFinished, packet.data, packet.size);
@ -107,7 +122,11 @@ wxArrayInt LAVCKeyFrames::GetKeyFrames() {
av_free_packet(&packet);
}
}
}
}
// Clean up progress
if (!canceled) progress->Destroy();
else throw wxString(_T("Keyframe loading cancelled by user"));
return keyframes;
}