HRESULT CAVIGenerator::InitEngine()
{
Revel_Error revError;
Revel_Params revParams;
Revel_InitializeParams(&revParams);
revParams.width = m_bih.biWidth;
revParams.height =m_bih.biHeight;
revParams.frameRate = 10.0f;
revParams.quality = 0.5f;
revParams.codec = REVEL_CD_XVID;
revParams.hasAudio = 0;
revError = Revel_CreateEncoder(&encoderHandle);
if (revError != REVEL_ERR_NONE)
{
return -1;
}
int len = wcslen(m_sFile);
char t[1024];
WideCharToMultiByte(CP_ACP, 0, m_sFile, len,
t, len, NULL, NULL);
t[len]='\0';
revError = Revel_EncodeStart(encoderHandle, t, &revParams);
if (revError != REVEL_ERR_NONE)
{
return -1;
}
return 1;
}
void initRecord(){
// Attempt to load some sound data, to encode into the output movie's
// audio stream.
bool hasAudio = false;
audioBuffer = NULL;
LoadAudio(&hasAudio, &audioBits, &audioChannels, &audioFormat, &audioRate,
&audioBuffer, &audioBufferSize);
if (!hasAudio)
{
printf("Warning: Failed to load audio test file: chimes.raw\n");
printf(" The audio encoding tests will be skipped.\n");
}
// Make sure the API version of Revel we're compiling against matches the
// header files! This is terribly important!
if (REVEL_API_VERSION != Revel_GetApiVersion())
{
printf("ERROR: Revel version mismatch!\n");
printf("Headers: version %06x, API version %d\n", REVEL_VERSION,
REVEL_API_VERSION);
printf("Library: version %06x, API version %d\n", Revel_GetVersion(),
Revel_GetApiVersion());
exit(1);
}
// Create an encoder
revError = Revel_CreateEncoder(&encoderHandle);
if (revError != REVEL_ERR_NONE)
{
printf("Revel Error while creating encoder: %d\n", revError);
exit(1);
}
// Set up the encoding parameters. ALWAYS call Revel_InitializeParams()
// before filling in your application's parameters, to ensure that all
// fields (especially ones that you may not know about) are initialized
// to safe values.
Revel_InitializeParams(&revParams);
revParams.width = width;
revParams.height = height;
revParams.frameRate = 25.0f;
revParams.quality = 1.0f;
revParams.codec = REVEL_CD_XVID;
revParams.hasAudio = hasAudio ? 1 : 0;
revParams.audioChannels = audioChannels;
revParams.audioRate = audioRate;
revParams.audioBits = audioBits;
revParams.audioSampleFormat = audioFormat;
// Initiate encoding
revError = Revel_EncodeStart(encoderHandle, filename, &revParams);
if (revError != REVEL_ERR_NONE)
{
printf("Revel Error while starting encoding: %d\n", revError);
exit(1);
}
// Draw and encode each frame.
frame.width = width;
frame.height = height;
frame.bytesPerPixel = 4;
frame.pixelFormat = REVEL_PF_RGBA;
frame.pixels = new int[width*height];
}
int main(int argc, char *argv[])
{
const char *filename = "checkers.avi";
int numFrames = 64;
Revel_Error revError;
// Make sure the encoder is valid
if (!Revel_IsEncoderValid(encoderHandle))
{
return -1;
}
// Attempt to load some sound data, to encode into the output movie's
// audio stream.
bool hasAudio = false;
char *audioBuffer = NULL;
int audioBufferSize = 0;
LoadAudio(&hasAudio, &audioBuffer, &audioBufferSize);
if (!hasAudio)
{
printf("Warning: Failed to load audio test file: chimes.raw\n");
printf(" The audio encoding tests will be skipped.\n");
}
// Initiate encoding
revError = Revel_EncodeStart(encoderHandle, filename);
if (revError != REVEL_ERR_NONE)
{
printf("Revel Error while starting encoding: %d\n", revError);
exit(1);
}
// Draw and encode each frame.
Revel_VideoFrame frame;
frame.width = width;
frame.height = height;
frame.bytesPerPixel = 4;
frame.pixelFormat = REVEL_PF_RGBA;
frame.pixels = new int[width*height];
memset(frame.pixels, 0, width*height*4);
for(int i=0; i<numFrames; ++i)
{
DrawFrame(frame.width, frame.height, 0xFF000000 + 0x000004*i, i, i,
(int*)frame.pixels);
int frameSize = 0;
revError = Revel_EncodeFrame(encoderHandle, &frame, &frameSize);
if (revError != REVEL_ERR_NONE)
{
printf("Revel Error while writing frame: %d\n", revError);
exit(1);
}
printf("Frame %d of %d: %d bytes\n", i+1, numFrames, frameSize);
}
// Encode the audio track. NOTE that each call to Revel_EncodeAudio()
// *appends* the new audio data onto the existing audio track. There is
// no synchronization between the audio and video tracks! If you want
// the audio to start on frame 60, you need to manually insert 60 frames
// worth of silence at the beginning of your audio track!
//
// To demonstrate this, we'll encode the audio buffer twice. Note that
// the two chimes play immediately when the movie starts, one after the
// other, even though we're encoding them "after" all the video frames.
int totalAudioBytes = 0;
revError = Revel_EncodeAudio(encoderHandle, audioBuffer, audioBufferSize,
&totalAudioBytes);
revError = Revel_EncodeAudio(encoderHandle, audioBuffer, audioBufferSize,
&totalAudioBytes);
if (revError != REVEL_ERR_NONE)
{
printf("Revel Error while writing audio: %d\n", revError);
exit(1);
}
printf("Encoded %d bytes of audio\n", totalAudioBytes);
// Finalize encoding. If this step is skipped, the output movie will be
// unviewable!
int totalSize = 0;
revError = Revel_EncodeEnd(encoderHandle, &totalSize);
if (revError != REVEL_ERR_NONE)
{
printf("Revel Error while ending encoding: %d\n", revError);
exit(1);
}
printf("%s written: %dx%d, %d frames, %d bytes\n", filename, width, height,
numFrames, totalSize);
// Final cleanup.
Revel_DestroyEncoder(encoderHandle);
if (audioBuffer != NULL)
delete [] audioBuffer;
delete [] (int*)frame.pixels;
return 0;
}
