forked from mia/Aegisub
0763541848
* move win32/config0.h -> config/config_windows0.h
* move win32/stdint.h -> msvc/stdint.h
* move posix/defines.h -> config/config_unix.h
* add config.h - brings in config_(windows|unix).h as required
* add config.h to *.cpp
* Self-contain FFmpegSource2 with required function defines wrapped with
__UNIX__ instead of the now removed defines.h.
* Edit aegisub_vs2008.vcproj to remove explicit inclusion of config.h, also
change VCPreBuildEventTool to create windows_config.h from
windows_config0.h. Add msvc to include path.
* Change configure to create ./acconf.h instead of posix/acconf.h
This will allow us to create a more standard and platform agnostic way of
configuration aegsisub during build time.
Originally committed to SVN as r2621.
142 lines
4.4 KiB
C++
142 lines
4.4 KiB
C++
// Copyright (c) 2007, 2points
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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///////////
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// Headers
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#include "config.h"
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#ifdef WITH_FFMPEG
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#ifdef WIN32
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#define __STDC_CONSTANT_MACROS 1
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#include <stdint.h>
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#endif /* WIN32 */
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#include "dialog_progress.h"
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#include "lavc_keyframes.h"
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///////////////
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// Constructor
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LAVCKeyFrames::LAVCKeyFrames(const Aegisub::String filename)
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: file(0), stream(0), streamN(-1), numFrames(0) {
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// Open LAVCFile
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file = LAVCFile::Create(filename);
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// Find video stream
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for (unsigned int i = 0; i < file->fctx->nb_streams; ++i) {
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if (file->fctx->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO) {
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stream = file->fctx->streams[i];
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streamN = i;
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break;
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}
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}
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if (streamN == -1) throw _T("ffmpeg keyframes reader: Could not find a video stream");
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}
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//////////////
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// Destructor
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LAVCKeyFrames::~LAVCKeyFrames() {
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if (file) file->Release();
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}
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////////////////////////////
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// Parse file for keyframes
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wxArrayInt LAVCKeyFrames::GetKeyFrames() {
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wxArrayInt keyframes;
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AVPacket packet;
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int total_frames;
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// check if the stream duration is bogus (will happen for MKV files)
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if (stream->duration == AV_NOPTS_VALUE) {
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// throw _T("ffmpeg keyframes reader: demuxer returned invalid stream length");
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// FIXME: find some less dumb way to do this
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total_frames = 123456; // random suitably big number
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}
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else {
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total_frames = stream->duration;
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}
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register unsigned int frameN = 0; // Number of parsed frames
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numFrames = 0;
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volatile bool canceled = false;
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DialogProgress *progress = new DialogProgress(NULL,_("Load keyframes"),&canceled,_("Reading keyframes from video"),0,total_frames);
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progress->Show();
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progress->SetProgress(0,1);
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while (av_read_frame(file->fctx, &packet) == 0 && !canceled) {
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// Check if packet is part of video stream
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if (packet.stream_index == streamN) {
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framesData.push_back(LAVCFrameInfo(packet.dts, (packet.flags & PKT_FLAG_KEY) ? 1 : 0));
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// Check if the packet contains a keyframe
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if (packet.flags & PKT_FLAG_KEY)
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// note: frame numbers start from 0, watch out for the fencepost error
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keyframes.Add(frameN);
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// Increment number of passed frames
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frameN++;
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/* Might need some adjustments here, to make it
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appear as fluid as wanted. Just copied 2points thingy,
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and reduced it a bit */
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if ((frameN & (1024 - 1)) == 0)
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progress->SetProgress(frameN,total_frames);
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}
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av_free_packet(&packet);
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}
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numFrames = frameN;
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// Clean up progress
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if (!canceled) progress->Destroy();
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else throw wxString(_T("Keyframe loading cancelled by user"));
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return keyframes;
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}
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// returns the video duration in frames
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int LAVCKeyFrames::GetNumFrames() {
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return numFrames;
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}
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// returns the frame metadata vector
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LAVCFrameInfoVector LAVCKeyFrames::GetFrameData() {
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return framesData;
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}
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#endif // WITH_FFMPEG
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