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LAVCFile

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Originally committed to SVN as r325.
This commit is contained in:
David Lamparter 2006-04-14 22:35:02 +00:00
parent 33ff5515e5
commit 71511a3950
5 changed files with 138 additions and 16 deletions
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1
core/Makefile.am
View file

@ -59,6 +59,7 @@ aegisub_SOURCES = about.cpp \
frame_main_events.cpp \
hilimod_textctrl.cpp \
hotkeys.cpp \
lavc_file.cpp \
main.cpp \
md5.c \
mkv_wrap.cpp \

65
core/lavc_file.cpp Normal file
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@ -0,0 +1,65 @@
// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// -----------------------------------------------------------------------------
//
// AEGISUB
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
#include "lavc_file.h"
#ifdef USE_LAVC
LAVCFile::LAVCFile(wxString filename)
{
int result = 0;
fctx = NULL;
result = av_open_input_file(&fctx,filename.mb_str(wxConvLocal),NULL,0,NULL);
if (result != 0) throw _T("Failed opening file.");
// Get stream info
result = av_find_stream_info(fctx);
if (result < 0) {
av_close_input_file(fctx);
fctx = NULL;
throw _T("Unable to read stream info");
}
refs = 1;
}
LAVCFile::~LAVCFile()
{
if (fctx)
av_close_input_file(fctx);
}
#endif

60
core/lavc_file.h Normal file
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@ -0,0 +1,60 @@
// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// -----------------------------------------------------------------------------
//
// AEGISUB
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
#pragma once
#ifndef LAVC_FILE_H
#define LAVC_FILE_H
#include <ffmpeg/avcodec.h>
#include <ffmpeg/avformat.h>
class LAVCFile {
private:
unsigned refs;
LAVCFile(wxString filename);
~LAVCFile();
public:
AVFormatContext *fctx;
static LAVCFile *Create(wxString filename) { return new LAVCFile(filename); }
LAVCFile *AddRef() { refs++; return this; };
void Release() { if (!--refs) delete this; };
};
#endif /* LAVC_FILE_H */

25
core/video_provider_lavc.cpp
View file

@ -50,7 +50,7 @@
LAVCVideoProvider::LAVCVideoProvider(wxString filename, wxString subfilename) {
// Init variables
codecContext = NULL;
formatContext = NULL;
lavcfile = NULL;
codec = NULL;
stream = NULL;
frame = NULL;
@ -87,24 +87,18 @@ void LAVCVideoProvider::LoadVideo(wxString filename) {
// Close first
Close();
lavcfile = LAVCFile::Create(filename);
// Load
try {
// Open file
int result = 0;
result = av_open_input_file(&formatContext,filename.mb_str(wxConvLocal),NULL,0,NULL);
if (result != 0) throw _T("Failed opening file.");
// Get stream info
result = av_find_stream_info(formatContext);
if (result < 0) throw _T("Unable to read stream info");
// Find video stream
vidStream = -1;
codecContext = NULL;
for (int i=0;i<formatContext->nb_streams;i++) {
codecContext = formatContext->streams[i]->codec;
for (int i=0;i<lavcfile->fctx->nb_streams;i++) {
codecContext = lavcfile->fctx->streams[i]->codec;
if (codecContext->codec_type == CODEC_TYPE_VIDEO) {
stream = formatContext->streams[i];
stream = lavcfile->fctx->streams[i];
vidStream = i;
break;
}
@ -179,8 +173,9 @@ void LAVCVideoProvider::Close() {
codec = NULL;
// Close format context
if (formatContext) av_close_input_file(formatContext);
formatContext = NULL;
if (lavcfile)
lavcfile->Release();
lavcfile = NULL;
}
@ -198,7 +193,7 @@ void LAVCVideoProvider::UpdateDisplaySize() {
bool LAVCVideoProvider::GetNextFrame() {
// Read packet
AVPacket packet;
while (av_read_frame(formatContext, &packet)>=0) {
while (av_read_frame(lavcfile->fctx, &packet)>=0) {
// Check if packet is part of video stream
if(packet.stream_index == vidStream) {
// Decode frame
@ -359,7 +354,7 @@ wxBitmap LAVCVideoProvider::GetFrame(int n) {
// Constant frame rate
else {
seekTo = n;
result = av_seek_frame(formatContext,vidStream,seekTo,AVSEEK_FLAG_BACKWARD);
result = av_seek_frame(lavcfile->fctx,vidStream,seekTo,AVSEEK_FLAG_BACKWARD);
// Seek to keyframe
if (result == 0) {

3
core/video_provider_lavc.h
View file

@ -53,6 +53,7 @@
#include <ffmpeg/avformat.h>
#include "video_provider.h"
#include "mkv_wrap.h"
#include "lavc_file.h"
///////////////////////
@ -61,7 +62,7 @@ class LAVCVideoProvider : public VideoProvider {
private:
MatroskaWrapper mkv;
AVFormatContext *formatContext;
LAVCFile *lavcfile;
AVCodecContext *codecContext;
AVStream *stream;
AVCodec *codec;