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CaptureAvi.cpp
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CaptureAvi.cpp
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/*
Copyright (C) 2001 Quake done Quick
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "quakedef.h"
#include "ICapture.h"
// This is a Win32 only implementation of ICapture for
// audio/video capture of AVI using a specified codec.
// --Anthony.
#ifdef _WIN32
#include <windows.h>
#include <vfw.h>
class CaptureAviWriter
{
public:
CaptureAviWriter(char* filename, char* fourcc, float fps, int audio_hz);
virtual ~CaptureAviWriter();
BOOL WriteVideo(int width, int height, unsigned char* rgba_pixel_buffer);
BOOL WriteAudio(int samples, unsigned char* stereo_16bit_sample_buffer);
protected:
typedef void (CALLBACK* LPFNAVIFILEINIT)(void);
typedef HRESULT (CALLBACK* LPFNAVIFILEOPEN)(PAVIFILE*, LPCTSTR, UINT, LPCLSID);
typedef HRESULT (CALLBACK* LPFNAVIFILECREATESTREAM)(PAVIFILE, PAVISTREAM*, AVISTREAMINFO*);
typedef HRESULT (CALLBACK* LPFNAVIMAKECOMPRESSEDSTREAM)(PAVISTREAM*, PAVISTREAM, AVICOMPRESSOPTIONS*, CLSID*);
typedef HRESULT (CALLBACK* LPFNAVISTREAMSETFORMAT)(PAVISTREAM, LONG, LPVOID, LONG);
typedef HRESULT (CALLBACK* LPFNAVISTREAMWRITE)(PAVISTREAM, LONG, LONG, LPVOID, LONG, DWORD, LONG*, LONG*);
typedef ULONG (CALLBACK* LPFNAVISTREAMRELEASE)(PAVISTREAM);
typedef ULONG (CALLBACK* LPFNAVIFILERELEASE)(PAVIFILE);
typedef void (CALLBACK* LPFNAVIFILEEXIT)(void);
HINSTANCE m_avidll_handle;
LPFNAVIFILEINIT m_lpfnAVIFileInit;
LPFNAVIFILEOPEN m_lpfnAVIFileOpen;
LPFNAVIFILECREATESTREAM m_lpfnAVIFileCreateStream;
LPFNAVIMAKECOMPRESSEDSTREAM m_lpfnAVIMakeCompressedStream;
LPFNAVISTREAMSETFORMAT m_lpfnAVIStreamSetFormat;
LPFNAVISTREAMWRITE m_lpfnAVIStreamWrite;
LPFNAVISTREAMRELEASE m_lpfnAVIStreamRelease;
LPFNAVIFILERELEASE m_lpfnAVIFileRelease;
LPFNAVIFILEEXIT m_lpfnAVIFileExit;
PAVIFILE m_file;
PAVISTREAM m_uncompressed_video_stream;
PAVISTREAM m_compressed_video_stream;
PAVISTREAM VideoStream() const;
PAVISTREAM m_uncompressed_audio_stream;
PAVISTREAM AudioStream() const;
unsigned long m_codec_fourcc;
int m_video_frame_counter;
int m_video_frame_size;
float m_fps;
int m_audio_hz;
int m_audio_frame_counter;
WAVEFORMATEX m_wave_format;
};
CaptureAviWriter::CaptureAviWriter(char* filename, char* fourcc, float fps, int audio_hz)
: m_fps(fps),
m_audio_hz(audio_hz),
m_video_frame_counter(0),
m_audio_frame_counter(0),
m_file(NULL),
m_codec_fourcc(0),
m_compressed_video_stream(NULL),
m_uncompressed_video_stream(NULL),
m_uncompressed_audio_stream(NULL),
m_avidll_handle(NULL)
{
m_avidll_handle = LoadLibrary("avifil32.dll");
if (fourcc != NULL) { // codec fourcc supplied
m_codec_fourcc = mmioFOURCC(*(fourcc+0), *(fourcc+1), *(fourcc+2), *(fourcc+3));
}
if (m_avidll_handle != NULL) {
m_lpfnAVIFileInit = (LPFNAVIFILEINIT)GetProcAddress(m_avidll_handle, "AVIFileInit");
m_lpfnAVIFileOpen = (LPFNAVIFILEOPEN)GetProcAddress(m_avidll_handle, "AVIFileOpen");
m_lpfnAVIFileCreateStream = (LPFNAVIFILECREATESTREAM)GetProcAddress(m_avidll_handle, "AVIFileCreateStream");
m_lpfnAVIMakeCompressedStream = (LPFNAVIMAKECOMPRESSEDSTREAM)GetProcAddress(m_avidll_handle, "AVIMakeCompressedStream");
m_lpfnAVIStreamSetFormat = (LPFNAVISTREAMSETFORMAT)GetProcAddress(m_avidll_handle, "AVIStreamSetFormat");
m_lpfnAVIStreamWrite = (LPFNAVISTREAMWRITE)GetProcAddress(m_avidll_handle, "AVIStreamWrite");
m_lpfnAVIStreamRelease = (LPFNAVISTREAMRELEASE)GetProcAddress(m_avidll_handle, "AVIStreamRelease");
m_lpfnAVIFileRelease = (LPFNAVIFILERELEASE)GetProcAddress(m_avidll_handle, "AVIFileRelease");
m_lpfnAVIFileExit = (LPFNAVIFILEEXIT)GetProcAddress(m_avidll_handle, "AVIFileExit");
m_lpfnAVIFileInit();
HRESULT hr = m_lpfnAVIFileOpen(&m_file, filename, OF_WRITE | OF_CREATE, NULL);
}
}
CaptureAviWriter::~CaptureAviWriter()
{
if (m_uncompressed_video_stream) m_lpfnAVIStreamRelease(m_uncompressed_video_stream);
if (m_compressed_video_stream) m_lpfnAVIStreamRelease(m_compressed_video_stream);
if (m_uncompressed_audio_stream) m_lpfnAVIStreamRelease(m_uncompressed_audio_stream);
if (m_file) m_lpfnAVIFileRelease(m_file);
m_lpfnAVIFileExit();
}
PAVISTREAM CaptureAviWriter::VideoStream() const
{
return m_codec_fourcc ? m_compressed_video_stream : m_uncompressed_video_stream;
}
PAVISTREAM CaptureAviWriter::AudioStream() const
{
return m_uncompressed_audio_stream;
}
BOOL CaptureAviWriter::WriteVideo(int width, int height, unsigned char* pixel_buffer)
{
if (m_avidll_handle == NULL) return FALSE;
if (m_file == NULL) return FALSE;
HRESULT hr;
if (!m_video_frame_counter) {
// write header etc based on first_frame
m_video_frame_size = width * height * 3;
BITMAPINFOHEADER bitmap_info_header;
memset(&bitmap_info_header, 0, sizeof(BITMAPINFOHEADER));
bitmap_info_header.biSize = 40;
bitmap_info_header.biWidth = width;
bitmap_info_header.biHeight = height;
bitmap_info_header.biPlanes = 1;
bitmap_info_header.biBitCount = 24;
bitmap_info_header.biCompression = BI_RGB;
bitmap_info_header.biSizeImage = m_video_frame_size * 3;
AVISTREAMINFO stream_header;
memset(&stream_header, 0, sizeof(stream_header));
stream_header.fccType = streamtypeVIDEO;
stream_header.fccHandler = m_codec_fourcc;
stream_header.dwScale = 100;
stream_header.dwRate = (unsigned long)(0.5 + m_fps * 100.0);
SetRect(&stream_header.rcFrame, 0, 0, width, height);
hr = m_lpfnAVIFileCreateStream(m_file, &m_uncompressed_video_stream, &stream_header);
if (FAILED(hr)) return FALSE;
if (m_codec_fourcc) {
AVICOMPRESSOPTIONS opts;
memset(&opts, 0, sizeof(opts));
AVICOMPRESSOPTIONS* aopts[1] = { &opts };
opts.fccType = stream_header.fccType;
opts.fccHandler = m_codec_fourcc;
// Make the stream according to compression
hr = m_lpfnAVIMakeCompressedStream(&m_compressed_video_stream, m_uncompressed_video_stream, &opts, NULL);
if (FAILED(hr)) return FALSE;
}
hr = m_lpfnAVIStreamSetFormat(VideoStream(), 0, &bitmap_info_header, sizeof(BITMAPINFOHEADER));
if (FAILED(hr)) return FALSE;
} else {
// check frame size (TODO: other things too?) hasn't changed
if (m_video_frame_size != width * height * 3) return FALSE;
}
if (VideoStream() == NULL) return FALSE;
hr = m_lpfnAVIStreamWrite(VideoStream(), m_video_frame_counter++, 1,
pixel_buffer, m_video_frame_size,
AVIIF_KEYFRAME, NULL, NULL);
if (FAILED(hr)) return FALSE;
return TRUE;
}
BOOL CaptureAviWriter::WriteAudio(int samples, unsigned char* sample_buffer)
{
if (m_avidll_handle == NULL) return FALSE;
if (m_file == NULL) return FALSE;
HRESULT hr;
if (!m_audio_frame_counter) {
// write header etc based on first_frame
memset(&m_wave_format, 0, sizeof(WAVEFORMATEX));
m_wave_format.wFormatTag = WAVE_FORMAT_PCM;
m_wave_format.nChannels = 2; // always stereo in Quake sound engine
m_wave_format.nSamplesPerSec = m_audio_hz;
m_wave_format.wBitsPerSample = 16; // always 16bit in Quake sound engine
m_wave_format.nBlockAlign = (unsigned short)(m_wave_format.wBitsPerSample/8 * m_wave_format.nChannels);
m_wave_format.nAvgBytesPerSec = m_wave_format.nSamplesPerSec * m_wave_format.nBlockAlign;
m_wave_format.cbSize = 0;
AVISTREAMINFO stream_header;
memset(&stream_header, 0, sizeof(stream_header));
stream_header.fccType = streamtypeAUDIO;
stream_header.dwScale = m_wave_format.nBlockAlign;
stream_header.dwRate = stream_header.dwScale * (unsigned long)m_wave_format.nSamplesPerSec;
stream_header.dwSampleSize = m_wave_format.nBlockAlign;
hr = m_lpfnAVIFileCreateStream(m_file, &m_uncompressed_audio_stream, &stream_header);
if (FAILED(hr)) return FALSE;
hr = m_lpfnAVIStreamSetFormat(AudioStream(), 0, &m_wave_format, sizeof(WAVEFORMATEX));
if (FAILED(hr)) return FALSE;
}
if (AudioStream() == NULL) return FALSE;
hr = m_lpfnAVIStreamWrite(
AudioStream(), m_audio_frame_counter++, 1,
sample_buffer, samples * m_wave_format.nBlockAlign,
AVIIF_KEYFRAME, NULL, NULL
);
if (FAILED(hr)) return FALSE;
return TRUE;
}
CaptureAviWriter* g_avi_writer = NULL;
char Capture_DOTEXTENSION[5] = ".avi";
void Capture_Open(char* filename, char* fourcc, float fps, int audio_hz)
{
g_avi_writer = new CaptureAviWriter(filename, fourcc, fps, audio_hz);
}
int Capture_WriteVideo(int width, int height, unsigned char* rgb_pixel_buffer)
{
return Capture_IsRecording() &&
g_avi_writer->WriteVideo(width, height, rgb_pixel_buffer);
}
int Capture_WriteAudio(int samples, unsigned char* stereo_16bit_sample_buffer)
{
return Capture_IsRecording() &&
g_avi_writer->WriteAudio(samples, stereo_16bit_sample_buffer);
}
void Capture_Close()
{
delete g_avi_writer;
g_avi_writer = NULL;
}
int Capture_IsRecording()
{
return (g_avi_writer == NULL) ? 0 : 1;
}
#else // NULL implementation for non-Win32 platforms
char Capture_DOTEXTENSION[5] = "";
void Capture_Open(char*, char*, float, int)
{
}
void Capture_Close()
{
}
int Capture_WriteVideo(int, int, unsigned char*)
{
return 0;
}
int Capture_WriteAudio(int, unsigned char*)
{
return 0;
}
int Capture_IsRecording()
{
return 0;
}
#endif