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videorec.cpp
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2045 lines (1989 loc) · 74.1 KB
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// ep128emu -- portable Enterprise 128 emulator
// Copyright (C) 2003-2016 Istvan Varga <istvanv@users.sourceforge.net>
// https://sourceforge.net/projects/ep128emu/
//
// 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 "ep128emu.hpp"
#include "display.hpp"
#include "snd_conv.hpp"
#include "videorec.hpp"
#include "system.hpp"
#include <cmath>
static const size_t aviHeaderSize_RLE8 = 0x0546;
static const size_t aviHeaderSize_YV12 = 0x0146;
namespace Ep128Emu {
VideoCapture::AudioConverter_::AudioConverter_(VideoCapture& videoCapture_,
float inputSampleRate_,
float outputSampleRate_,
float dcBlockFreq1,
float dcBlockFreq2,
float ampScale_)
: AudioConverterHighQuality(inputSampleRate_, outputSampleRate_,
dcBlockFreq1, dcBlockFreq2, ampScale_),
videoCapture(videoCapture_)
{
}
VideoCapture::AudioConverter_::~AudioConverter_()
{
}
void VideoCapture::AudioConverter_::audioOutput(int16_t left, int16_t right)
{
const int totalBufSize =
videoCapture.audioBufSize * videoCapture.audioBuffers * 2;
if (videoCapture.audioBufSamples < totalBufSize) {
videoCapture.audioBuf[videoCapture.audioBufWritePos++] = left;
if (videoCapture.audioBufWritePos >= totalBufSize)
videoCapture.audioBufWritePos = 0;
videoCapture.audioBufSamples++;
}
if (videoCapture.audioBufSamples < totalBufSize) {
videoCapture.audioBuf[videoCapture.audioBufWritePos++] = right;
if (videoCapture.audioBufWritePos >= totalBufSize)
videoCapture.audioBufWritePos = 0;
videoCapture.audioBufSamples++;
}
}
// --------------------------------------------------------------------------
void VideoCapture::aviHeader_writeFourCC(uint8_t*& bufp, const char *s)
{
bufp[0] = uint8_t(s[0]);
bufp[1] = uint8_t(s[1]);
bufp[2] = uint8_t(s[2]);
bufp[3] = uint8_t(s[3]);
bufp = bufp + 4;
}
void VideoCapture::aviHeader_writeUInt16(uint8_t*& bufp, uint16_t n)
{
bufp[0] = uint8_t(n & 0x00FF);
bufp[1] = uint8_t((n & 0xFF00) >> 8);
bufp = bufp + 2;
}
void VideoCapture::aviHeader_writeUInt32(uint8_t*& bufp, uint32_t n)
{
bufp[0] = uint8_t(n & 0x000000FFU);
bufp[1] = uint8_t((n & 0x0000FF00U) >> 8);
bufp[2] = uint8_t((n & 0x00FF0000U) >> 16);
bufp[3] = uint8_t((n & 0xFF000000U) >> 24);
bufp = bufp + 4;
}
void VideoCapture::defaultErrorCallback(void *userData, const char *msg)
{
(void) userData;
throw Exception(msg);
}
void VideoCapture::defaultFileNameCallback(void *userData,
std::string& fileName)
{
(void) userData;
fileName.clear();
}
VideoCapture::VideoCapture(int frameRate_)
: aviFile((std::FILE *) 0),
audioBuf((int16_t *) 0),
frameRate(frameRate_),
audioBufSize(0),
audioBufReadPos(0),
audioBufWritePos(0),
audioBufSamples(0),
clockFrequency(0),
soundOutputAccumulatorL(0U),
soundOutputAccumulatorR(0U),
curLine(0),
vsyncCnt(0),
vsyncState(false),
oddFrame(false),
framesWritten(0),
duplicateFrames(0),
fileSize(0),
audioConverter((AudioConverter *) 0),
aviHeaderSize(0),
errorCallback(&defaultErrorCallback),
errorCallbackUserData((void *) this),
fileNameCallback(&defaultFileNameCallback),
fileNameCallbackUserData((void *) this)
{
try {
frameRate = (frameRate > 24 ? (frameRate < 60 ? frameRate : 60) : 24);
while (((sampleRate / frameRate) * frameRate) != sampleRate)
frameRate++;
audioBufSize = sampleRate / frameRate;
audioBuf = new int16_t[audioBufSize * audioBuffers * 2];
for (int i = 0; i < (audioBufSize * audioBuffers * 2); i++)
audioBuf[i] = int16_t(0);
audioConverter =
new AudioConverter_(*this, 222656.25f, float(sampleRate));
}
catch (...) {
if (audioBuf)
delete[] audioBuf;
if (audioConverter)
delete audioConverter;
throw;
}
}
VideoCapture::~VideoCapture()
{
delete[] audioBuf;
delete audioConverter;
}
void VideoCapture::vsyncStateChange(bool newState, unsigned int currentSlot_)
{
vsyncState = newState;
if (newState &&
vsyncCnt >= (EP128EMU_VSYNC_MIN_LINES + 1 - EP128EMU_VSYNC_OFFSET)) {
vsyncCnt = 1 - EP128EMU_VSYNC_OFFSET;
oddFrame = (currentSlot_ >= 20U && currentSlot_ < 48U);
}
}
void VideoCapture::openFile(const char *fileName)
{
closeFile();
if (fileName == (char *) 0 || fileName[0] == '\0')
return;
aviFile = fileOpen(fileName, "wb");
if (!aviFile)
throw Exception("error opening AVI file");
framesWritten = 0;
duplicateFrames = 0;
fileSize = aviHeaderSize;
writeAVIHeader();
}
void VideoCapture::closeFile()
{
if (aviFile) {
// FIXME: file I/O errors are ignored here
try {
writeAVIHeader();
writeAVIIndex();
}
catch (...) {
}
if (aviFile)
std::fclose(aviFile);
aviFile = (std::FILE *) 0;
framesWritten = 0;
duplicateFrames = 0;
fileSize = 0;
}
}
void VideoCapture::errorMessage(const char *msg)
{
if (msg == (char *) 0 || msg[0] == '\0')
msg = "unknown video capture error";
errorCallback(errorCallbackUserData, msg);
}
void VideoCapture::setErrorCallback(void (*func)(void *userData,
const char *msg),
void *userData_)
{
if (func) {
errorCallback = func;
errorCallbackUserData = userData_;
}
else {
errorCallback = &defaultErrorCallback;
errorCallbackUserData = (void *) this;
}
}
void VideoCapture::setFileNameCallback(void (*func)(void *userData,
std::string& fileName),
void *userData_)
{
if (func) {
fileNameCallback = func;
fileNameCallbackUserData = userData_;
}
else {
fileNameCallback = &defaultFileNameCallback;
fileNameCallbackUserData = (void *) this;
}
}
// --------------------------------------------------------------------------
VideoCapture_RLE8::VideoCaptureFrameBuffer::VideoCaptureFrameBuffer(int w,
int h)
: buf((uint32_t *) 0),
linePtrs((uint8_t **) 0),
lineBytes_((uint32_t *) 0)
{
try {
size_t nBytes = (((((size_t(w) * 17) + 15) >> 4) + 3) >> 2) << 2;
buf = new uint32_t[(nBytes >> 2) * size_t(h)];
std::memset(buf, 0x00, nBytes * size_t(h));
linePtrs = new uint8_t*[h];
uint8_t *p = reinterpret_cast<uint8_t *>(buf);
for (int i = 0; i < h; i++) {
linePtrs[i] = p;
p = p + nBytes;
}
lineBytes_ = new uint32_t[h];
for (int i = 0; i < h; i++)
lineBytes_[i] = 0U;
}
catch (...) {
if (buf)
delete[] buf;
if (linePtrs)
delete[] linePtrs;
if (lineBytes_)
delete[] lineBytes_;
throw;
}
}
VideoCapture_RLE8::VideoCaptureFrameBuffer::~VideoCaptureFrameBuffer()
{
delete[] buf;
delete[] linePtrs;
delete[] lineBytes_;
}
inline bool VideoCapture_RLE8::VideoCaptureFrameBuffer::compareLine(
long dstLine, const VideoCaptureFrameBuffer& src, long srcLine)
{
if (lineBytes_[dstLine] != src.lineBytes_[srcLine])
return false;
if (src.lineBytes_[srcLine] == 0U)
return true;
return (std::memcmp(linePtrs[dstLine], src.linePtrs[srcLine],
src.lineBytes_[srcLine]) == 0);
}
inline void VideoCapture_RLE8::VideoCaptureFrameBuffer::copyLine(long dstLine,
long srcLine)
{
std::memcpy(linePtrs[dstLine], linePtrs[srcLine], lineBytes_[srcLine]);
lineBytes_[dstLine] = lineBytes_[srcLine];
}
inline void VideoCapture_RLE8::VideoCaptureFrameBuffer::copyLine(
long dstLine, const VideoCaptureFrameBuffer& src, long srcLine)
{
std::memcpy(linePtrs[dstLine], src.linePtrs[srcLine],
src.lineBytes_[srcLine]);
lineBytes_[dstLine] = src.lineBytes_[srcLine];
}
void VideoCapture_RLE8::VideoCaptureFrameBuffer::clearLine(long n)
{
uint8_t *p = linePtrs[n];
for (int i = 0; i < 48; i++) { // FIXME: assumes videoWidth == 768
*(p++) = 0x01;
*(p++) = 0x00;
}
lineBytes_[n] = 96U;
}
// --------------------------------------------------------------------------
VideoCapture_RLE8::VideoCapture_RLE8(
void (*indexToRGBFunc)(uint8_t color, float& r, float& g, float& b),
int frameRate_)
: VideoCapture(frameRate_),
tmpFrameBuf(videoWidth, videoHeight),
outputFrameBuf(videoWidth, videoHeight),
frameSizes((uint32_t *) 0),
cycleCnt(2),
prvOddFrame(false),
colormap((uint8_t *) 0)
{
try {
aviHeaderSize = aviHeaderSize_RLE8;
size_t maxFrames = 0x20000000 / size_t(audioBufSize);
frameSizes = new uint32_t[maxFrames];
std::memset(frameSizes, 0x00, maxFrames * sizeof(uint32_t));
// initialize colormap
colormap = new uint8_t[256 * 4];
for (int i = 0; i < 256; i++) {
float r = float(i) / 255.0f;
float g = r;
float b = r;
if (indexToRGBFunc)
indexToRGBFunc(uint8_t(i), r, g, b);
int ri = int((r > 0.0f ? (r < 1.0f ? r : 1.0f) : 0.0f) * 255.0f + 0.5f);
int gi = int((g > 0.0f ? (g < 1.0f ? g : 1.0f) : 0.0f) * 255.0f + 0.5f);
int bi = int((b > 0.0f ? (b < 1.0f ? b : 1.0f) : 0.0f) * 255.0f + 0.5f);
colormap[(i * 4) + 0] = uint8_t(bi);
colormap[(i * 4) + 1] = uint8_t(gi);
colormap[(i * 4) + 2] = uint8_t(ri);
colormap[(i * 4) + 3] = 0x00;
}
}
catch (...) {
if (frameSizes)
delete[] frameSizes;
if (colormap)
delete[] colormap;
throw;
}
setClockFrequency(890625);
}
VideoCapture_RLE8::~VideoCapture_RLE8()
{
closeFile();
delete[] frameSizes;
delete[] colormap;
}
void VideoCapture_RLE8::runOneCycle(uint32_t audioInput)
{
soundOutputAccumulatorL += uint32_t(audioInput & 0xFFFFU);
soundOutputAccumulatorR += uint32_t(audioInput >> 16);
if (--cycleCnt == 0) {
cycleCnt = 2;
uint32_t tmpL = (soundOutputAccumulatorL + 1U) >> 1;
uint32_t tmpR = (soundOutputAccumulatorR + 1U) >> 1;
soundOutputAccumulatorL = 0U;
soundOutputAccumulatorR = 0U;
audioConverter->sendInputSignal(tmpL | (tmpR << 16));
}
}
void VideoCapture_RLE8::setClockFrequency(size_t freq_)
{
if (freq_ == clockFrequency)
return;
clockFrequency = freq_;
audioConverter->setInputSampleRate(float(long(freq_)) * 0.5f);
}
void VideoCapture_RLE8::horizontalSync(const uint8_t *buf, size_t nBytes)
{
if (curLine >= 0 && curLine < videoHeight) {
uint8_t *p = &(tmpFrameBuf[curLine][0]);
for (size_t i = 0; i < nBytes; i++)
p[i] = buf[i];
tmpFrameBuf.lineBytes(curLine) = uint32_t(nBytes);
if (bool(curLine & 1) == prvOddFrame) {
// no interlace, need to duplicate line
tmpFrameBuf.copyLine(curLine ^ 1, curLine);
}
}
if (vsyncCnt != 0) {
curLine += 2;
if (curLine < videoHeight)
tmpFrameBuf.lineBytes(curLine) = 0U;
if (vsyncCnt >= (EP128EMU_VSYNC_MIN_LINES - EP128EMU_VSYNC_OFFSET) &&
(vsyncState ||
vsyncCnt >= (EP128EMU_VSYNC_MAX_LINES - EP128EMU_VSYNC_OFFSET))) {
vsyncCnt = -(EP128EMU_VSYNC_OFFSET);
}
vsyncCnt++;
}
else {
for (int i = (curLine + 1); i < videoHeight; i++)
tmpFrameBuf.clearLine(i);
frameDone();
prvOddFrame = bool(curLine & 1);
curLine = (oddFrame ? -1 : 0);
if (curLine >= 0)
tmpFrameBuf.lineBytes(curLine) = 0U;
vsyncCnt++;
oddFrame = false;
}
}
void VideoCapture_RLE8::frameDone()
{
if (audioBufSamples >= (audioBufSize * 2)) {
bool frameChanged = false;
for (int i = 0; i < videoHeight; i++) {
if (!tmpFrameBuf.compareLine(i, outputFrameBuf, i)) {
frameChanged = true;
outputFrameBuf.copyLine(i, tmpFrameBuf, i);
}
}
do {
audioBufSamples -= (audioBufSize * 2);
writeFrame(frameChanged);
frameChanged = false;
audioBufReadPos += (audioBufSize * 2);
while (audioBufReadPos >= (audioBufSize * audioBuffers * 2))
audioBufReadPos -= (audioBufSize * audioBuffers * 2);
} while (audioBufSamples >= (audioBufSize * 2));
}
}
void VideoCapture_RLE8::decodeLine(uint8_t *outBuf, const uint8_t *inBuf)
{
for (size_t i = 0; i < (videoWidth / 16); i++) {
uint8_t c = *(inBuf++);
switch (c) {
case 0x01:
outBuf[15] = outBuf[14] = outBuf[13] = outBuf[12] =
outBuf[11] = outBuf[10] = outBuf[9] = outBuf[8] =
outBuf[7] = outBuf[6] = outBuf[5] = outBuf[4] =
outBuf[3] = outBuf[2] = outBuf[1] = outBuf[0] = *(inBuf++);
break;
case 0x02:
outBuf[7] = outBuf[6] = outBuf[5] = outBuf[4] =
outBuf[3] = outBuf[2] = outBuf[1] = outBuf[0] = *(inBuf++);
outBuf[15] = outBuf[14] = outBuf[13] = outBuf[12] =
outBuf[11] = outBuf[10] = outBuf[9] = outBuf[8] = *(inBuf++);
break;
case 0x03:
{
uint8_t c0 = *(inBuf++);
uint8_t c1 = *(inBuf++);
uint8_t b = *(inBuf++);
outBuf[1] = outBuf[0] = ((b & 128) ? c1 : c0);
outBuf[3] = outBuf[2] = ((b & 64) ? c1 : c0);
outBuf[5] = outBuf[4] = ((b & 32) ? c1 : c0);
outBuf[7] = outBuf[6] = ((b & 16) ? c1 : c0);
outBuf[9] = outBuf[8] = ((b & 8) ? c1 : c0);
outBuf[11] = outBuf[10] = ((b & 4) ? c1 : c0);
outBuf[13] = outBuf[12] = ((b & 2) ? c1 : c0);
outBuf[15] = outBuf[14] = ((b & 1) ? c1 : c0);
}
break;
case 0x04:
outBuf[3] = outBuf[2] = outBuf[1] = outBuf[0] = *(inBuf++);
outBuf[7] = outBuf[6] = outBuf[5] = outBuf[4] = *(inBuf++);
outBuf[11] = outBuf[10] = outBuf[9] = outBuf[8] = *(inBuf++);
outBuf[15] = outBuf[14] = outBuf[13] = outBuf[12] = *(inBuf++);
break;
case 0x06:
{
uint8_t c0 = *(inBuf++);
uint8_t c1 = *(inBuf++);
uint8_t b = *(inBuf++);
outBuf[0] = ((b & 128) ? c1 : c0);
outBuf[1] = ((b & 64) ? c1 : c0);
outBuf[2] = ((b & 32) ? c1 : c0);
outBuf[3] = ((b & 16) ? c1 : c0);
outBuf[4] = ((b & 8) ? c1 : c0);
outBuf[5] = ((b & 4) ? c1 : c0);
outBuf[6] = ((b & 2) ? c1 : c0);
outBuf[7] = ((b & 1) ? c1 : c0);
c0 = *(inBuf++);
c1 = *(inBuf++);
b = *(inBuf++);
outBuf[8] = ((b & 128) ? c1 : c0);
outBuf[9] = ((b & 64) ? c1 : c0);
outBuf[10] = ((b & 32) ? c1 : c0);
outBuf[11] = ((b & 16) ? c1 : c0);
outBuf[12] = ((b & 8) ? c1 : c0);
outBuf[13] = ((b & 4) ? c1 : c0);
outBuf[14] = ((b & 2) ? c1 : c0);
outBuf[15] = ((b & 1) ? c1 : c0);
}
break;
case 0x08:
outBuf[1] = outBuf[0] = *(inBuf++);
outBuf[3] = outBuf[2] = *(inBuf++);
outBuf[5] = outBuf[4] = *(inBuf++);
outBuf[7] = outBuf[6] = *(inBuf++);
outBuf[9] = outBuf[8] = *(inBuf++);
outBuf[11] = outBuf[10] = *(inBuf++);
outBuf[13] = outBuf[12] = *(inBuf++);
outBuf[15] = outBuf[14] = *(inBuf++);
break;
case 0x10:
outBuf[0] = *(inBuf++);
outBuf[1] = *(inBuf++);
outBuf[2] = *(inBuf++);
outBuf[3] = *(inBuf++);
outBuf[4] = *(inBuf++);
outBuf[5] = *(inBuf++);
outBuf[6] = *(inBuf++);
outBuf[7] = *(inBuf++);
outBuf[8] = *(inBuf++);
outBuf[9] = *(inBuf++);
outBuf[10] = *(inBuf++);
outBuf[11] = *(inBuf++);
outBuf[12] = *(inBuf++);
outBuf[13] = *(inBuf++);
outBuf[14] = *(inBuf++);
outBuf[15] = *(inBuf++);
break;
default:
outBuf[15] = outBuf[14] = outBuf[13] = outBuf[12] =
outBuf[11] = outBuf[10] = outBuf[9] = outBuf[8] =
outBuf[7] = outBuf[6] = outBuf[5] = outBuf[4] =
outBuf[3] = outBuf[2] = outBuf[1] = outBuf[0] = 0;
break;
}
outBuf = outBuf + 16;
}
}
size_t VideoCapture_RLE8::rleCompressLine(uint8_t *outBuf,
const uint8_t *inBuf)
{
uint8_t runLengths[1024];
uint8_t byteValues[1024];
size_t nBytes = 0;
int n = 0;
int runLength = 1;
for (int i = 1; i < videoWidth; i++) {
if (inBuf[i] != inBuf[i - 1]) {
runLengths[n] = uint8_t(runLength);
byteValues[n++] = inBuf[i - 1];
runLength = 1;
}
else {
if (++runLength >= 256) {
runLengths[n] = 255;
byteValues[n++] = inBuf[i - 1];
runLength = 1;
}
}
}
runLengths[n] = uint8_t(runLength);
byteValues[n++] = inBuf[videoWidth - 1];
for (int i = 0; i < n; ) {
if (runLengths[i] >= 2 || (i + 1) >= n) {
outBuf[nBytes++] = runLengths[i];
outBuf[nBytes++] = byteValues[i];
i++;
}
else {
int j = i + 1;
int bytesToCopy = int(runLengths[i]);
int minLength = 3;
do {
int tmp = int(runLengths[j]);
if (tmp >= minLength || (bytesToCopy + tmp) > 255)
break;
bytesToCopy += tmp;
minLength = 4 | (bytesToCopy & 1);
} while (++j < n);
if (bytesToCopy >= 3) {
outBuf[nBytes++] = 0x00;
outBuf[nBytes++] = uint8_t(bytesToCopy);
do {
int k = int(runLengths[i]);
uint8_t tmp = byteValues[i];
do {
outBuf[nBytes++] = tmp;
} while (--k != 0);
} while (++i < j);
if (bytesToCopy & 1)
outBuf[nBytes++] = 0x00;
}
else {
do {
outBuf[nBytes++] = runLengths[i];
outBuf[nBytes++] = byteValues[i];
} while (++i < j);
}
}
}
outBuf[nBytes++] = 0x00; // end of line
outBuf[nBytes++] = 0x00;
return nBytes;
}
void VideoCapture_RLE8::writeFrame(bool frameChanged)
{
if (!aviFile)
return;
if (!frameChanged) {
if (framesWritten == 0 || duplicateFrames >= size_t(frameRate))
frameChanged = true;
else
duplicateFrames++;
}
if (frameChanged)
duplicateFrames = 0;
try {
if (fileSize >= 0x7F800000) {
closeFile();
try {
errorMessage("AVI file is too large, starting new output file");
}
catch (...) {
}
std::string fileName = "";
fileNameCallback(fileNameCallbackUserData, fileName);
if (fileName.length() < 1)
return;
openFile(fileName.c_str());
}
if (std::fseek(aviFile, 0L, SEEK_END) < 0)
throw Exception("error seeking AVI file");
uint8_t headerBuf[8];
uint8_t *bufp = &(headerBuf[0]);
size_t nBytes = 0;
frameSizes[framesWritten] = 0U;
aviHeader_writeFourCC(bufp, "00dc");
aviHeader_writeUInt32(bufp, 0x00000000U);
fileSize = fileSize + 8;
if (std::fwrite(&(headerBuf[0]), 1, 8, aviFile) != 8)
throw Exception("error writing AVI file");
if (frameChanged) {
long savedFilePos = std::ftell(aviFile);
if (savedFilePos < 4L)
throw Exception("error seeking AVI file");
savedFilePos = savedFilePos - 4L;
uint8_t lineBuf[1024];
uint8_t rleBuf[1024];
size_t n = 0;
for (int i = (videoHeight - 1); i >= 0; i--) {
if (i == (videoHeight - 1) ||
!outputFrameBuf.compareLine(i, outputFrameBuf, i + 1)) {
decodeLine(&(lineBuf[0]), outputFrameBuf[i]);
n = rleCompressLine(&(rleBuf[0]), &(lineBuf[0]));
}
nBytes += n;
fileSize += n;
if (std::fwrite(&(rleBuf[0]), 1, n, aviFile) != n)
throw Exception("error writing AVI file");
}
if (std::fseek(aviFile, savedFilePos, SEEK_SET) < 0)
throw Exception("error seeking AVI file");
bufp = &(headerBuf[4]);
frameSizes[framesWritten] = uint32_t(nBytes);
aviHeader_writeUInt32(bufp, uint32_t(nBytes));
if (std::fwrite(&(headerBuf[4]), 1, 4, aviFile) != 4)
throw Exception("error writing AVI file");
if (std::fseek(aviFile, 0L, SEEK_END) < 0)
throw Exception("error seeking AVI file");
}
bufp = &(headerBuf[0]);
nBytes = size_t(audioBufSize * 4);
aviHeader_writeFourCC(bufp, "01wb");
aviHeader_writeUInt32(bufp, uint32_t(nBytes));
fileSize = fileSize + 8;
if (std::fwrite(&(headerBuf[0]), 1, 8, aviFile) != 8)
throw Exception("error writing AVI file");
int bufPos = audioBufReadPos;
for (int i = 0; i < (audioBufSize * 2); i++) {
if (bufPos >= (audioBufSize * audioBuffers * 2))
bufPos = 0;
int16_t tmp = audioBuf[bufPos++];
fileSize++;
if (std::fputc(int(uint16_t(tmp) & 0xFF), aviFile) == EOF)
throw Exception("error writing AVI file");
fileSize++;
if (std::fputc(int((uint16_t(tmp) >> 8) & 0xFF), aviFile) == EOF)
throw Exception("error writing AVI file");
}
}
catch (std::exception& e) {
closeFile();
errorMessage(e.what());
return;
}
framesWritten++;
if (!(framesWritten & 31)) {
try {
writeAVIHeader();
}
catch (std::exception& e) {
errorMessage(e.what());
}
}
}
void VideoCapture_RLE8::writeAVIHeader()
{
if (!aviFile)
return;
try {
if (std::fseek(aviFile, 0L, SEEK_SET) < 0)
throw Exception("error seeking AVI file");
uint8_t headerBuf[1536];
uint8_t *bufp = &(headerBuf[0]);
size_t maxVideoFrameSize = size_t((videoWidth + 16) * videoHeight);
size_t maxFrameSize = size_t(maxVideoFrameSize + (audioBufSize * 4)
+ 16);
aviHeader_writeFourCC(bufp, "RIFF");
aviHeader_writeUInt32(bufp, uint32_t(fileSize - 8));
aviHeader_writeFourCC(bufp, "AVI ");
aviHeader_writeFourCC(bufp, "LIST");
aviHeader_writeUInt32(bufp, 0x00000526U);
aviHeader_writeFourCC(bufp, "hdrl");
aviHeader_writeFourCC(bufp, "avih");
aviHeader_writeUInt32(bufp, 0x00000038U);
// microseconds per frame
aviHeader_writeUInt32(bufp,
uint32_t((1000000 + (frameRate >> 1)) / frameRate));
// max. bytes per second
aviHeader_writeUInt32(bufp, uint32_t(maxFrameSize * size_t(frameRate)));
// padding
aviHeader_writeUInt32(bufp, 0x00000001U);
// flags (AVIF_HASINDEX | AVIF_ISINTERLEAVED | AVIF_TRUSTCKTYPE)
aviHeader_writeUInt32(bufp, 0x00000910U);
// total frames
aviHeader_writeUInt32(bufp, uint32_t(framesWritten));
// initial frames
aviHeader_writeUInt32(bufp, 0x00000000U);
// number of streams
aviHeader_writeUInt32(bufp, 0x00000002U);
// suggested buffer size
aviHeader_writeUInt32(bufp, uint32_t(maxFrameSize));
// width
aviHeader_writeUInt32(bufp, uint32_t(videoWidth));
// height
aviHeader_writeUInt32(bufp, uint32_t(videoHeight));
// reserved
aviHeader_writeUInt32(bufp, 0x00000000U);
aviHeader_writeUInt32(bufp, 0x00000000U);
aviHeader_writeUInt32(bufp, 0x00000000U);
aviHeader_writeUInt32(bufp, 0x00000000U);
aviHeader_writeFourCC(bufp, "LIST");
aviHeader_writeUInt32(bufp, 0x00000474U);
aviHeader_writeFourCC(bufp, "strl");
aviHeader_writeFourCC(bufp, "strh");
aviHeader_writeUInt32(bufp, 0x00000038U);
aviHeader_writeFourCC(bufp, "vids");
// video codec
aviHeader_writeUInt32(bufp, 0x00000001U); // BI_RLE8
// flags
aviHeader_writeUInt32(bufp, 0x00000000U);
// priority
aviHeader_writeUInt16(bufp, 0x0000);
// language
aviHeader_writeUInt16(bufp, 0x0000);
// initial frames
aviHeader_writeUInt32(bufp, 0x00000000U);
// scale
aviHeader_writeUInt32(bufp, 0x00000001U);
// rate
aviHeader_writeUInt32(bufp, uint32_t(frameRate));
// start time
aviHeader_writeUInt32(bufp, 0x00000000U);
// length
aviHeader_writeUInt32(bufp, uint32_t(framesWritten));
// suggested buffer size
aviHeader_writeUInt32(bufp, uint32_t(maxVideoFrameSize));
// quality
aviHeader_writeUInt32(bufp, 0x00000000U);
// sample size
aviHeader_writeUInt32(bufp, 0x00000000U);
// left
aviHeader_writeUInt16(bufp, 0x0000);
// top
aviHeader_writeUInt16(bufp, 0x0000);
// right
aviHeader_writeUInt16(bufp, uint16_t(videoWidth));
// bottom
aviHeader_writeUInt16(bufp, uint16_t(videoHeight));
aviHeader_writeFourCC(bufp, "strf");
aviHeader_writeUInt32(bufp, 0x00000428U);
aviHeader_writeUInt32(bufp, 0x00000028U);
// width
aviHeader_writeUInt32(bufp, uint32_t(videoWidth));
// height
aviHeader_writeUInt32(bufp, uint32_t(videoHeight));
// planes
aviHeader_writeUInt16(bufp, 0x0001);
// bits per pixel
aviHeader_writeUInt16(bufp, 0x0008);
// compression
aviHeader_writeUInt32(bufp, 0x00000001U); // BI_RLE8
// image size in bytes
aviHeader_writeUInt32(bufp, uint32_t(videoWidth * videoHeight));
// X resolution
aviHeader_writeUInt32(bufp, 0x00000000U);
// Y resolution
aviHeader_writeUInt32(bufp, 0x00000000U);
// color indexes used
aviHeader_writeUInt32(bufp, 0x00000000U);
// color indexes required
aviHeader_writeUInt32(bufp, 0x00000000U);
// colormap (256 entries)
std::memcpy(bufp, colormap, 1024);
bufp = bufp + 1024;
aviHeader_writeFourCC(bufp, "LIST");
aviHeader_writeUInt32(bufp, 0x0000005EU);
aviHeader_writeFourCC(bufp, "strl");
aviHeader_writeFourCC(bufp, "strh");
aviHeader_writeUInt32(bufp, 0x00000038U);
aviHeader_writeFourCC(bufp, "auds");
// audio codec (WAVE_FORMAT_PCM)
aviHeader_writeUInt32(bufp, 0x00000001U);
// flags
aviHeader_writeUInt32(bufp, 0x00000000U);
// priority
aviHeader_writeUInt16(bufp, 0x0000);
// language
aviHeader_writeUInt16(bufp, 0x0000);
// initial frames
aviHeader_writeUInt32(bufp, 0x00000000U);
// scale
aviHeader_writeUInt32(bufp, 0x00000001U);
// rate
aviHeader_writeUInt32(bufp, uint32_t(sampleRate));
// start time
aviHeader_writeUInt32(bufp, 0x00000000U);
// length
aviHeader_writeUInt32(bufp, uint32_t(framesWritten
* size_t(audioBufSize)));
// suggested buffer size
aviHeader_writeUInt32(bufp, uint32_t(audioBufSize * 4));
// quality
aviHeader_writeUInt32(bufp, 0x00000000U);
// sample size
aviHeader_writeUInt32(bufp, 0x00000004U);
// left
aviHeader_writeUInt16(bufp, 0x0000);
// top
aviHeader_writeUInt16(bufp, 0x0000);
// right
aviHeader_writeUInt16(bufp, 0x0000);
// bottom
aviHeader_writeUInt16(bufp, 0x0000);
aviHeader_writeFourCC(bufp, "strf");
aviHeader_writeUInt32(bufp, 0x00000012U);
// audio format (WAVE_FORMAT_PCM)
aviHeader_writeUInt16(bufp, 0x0001);
// audio channels
aviHeader_writeUInt16(bufp, 0x0002);
// samples per second
aviHeader_writeUInt32(bufp, uint32_t(sampleRate));
// bytes per second
aviHeader_writeUInt32(bufp, uint32_t(sampleRate * 4));
// block alignment
aviHeader_writeUInt16(bufp, 0x0004);
// bits per sample
aviHeader_writeUInt16(bufp, 0x0010);
// additional format information size
aviHeader_writeUInt16(bufp, 0x0000);
aviHeader_writeFourCC(bufp, "LIST");
aviHeader_writeUInt32(bufp, uint32_t((fileSize - aviHeaderSize) + 4));
aviHeader_writeFourCC(bufp, "movi");
size_t nBytes = size_t(bufp - (&(headerBuf[0])));
if (std::fwrite(&(headerBuf[0]), 1, nBytes, aviFile) != nBytes)
throw Exception("error writing AVI file header");
if (std::fflush(aviFile) != 0)
throw Exception("error writing AVI file header");
}
catch (...) {
std::fclose(aviFile);
aviFile = (std::FILE *) 0;
framesWritten = 0;
duplicateFrames = 0;
fileSize = 0;
throw;
}
}
void VideoCapture_RLE8::writeAVIIndex()
{
if (!aviFile)
return;
try {
if (std::fseek(aviFile, 0L, SEEK_END) < 0)
throw Exception("error seeking AVI file");
uint8_t tmpBuf[32];
uint8_t *bufp = &(tmpBuf[0]);
aviHeader_writeFourCC(bufp, "idx1");
aviHeader_writeUInt32(bufp, uint32_t(framesWritten << 5));
fileSize = fileSize + 8;
if (std::fwrite(&(tmpBuf[0]), 1, 8, aviFile) != 8)
throw Exception("error writing AVI file index");
size_t filePos = 4;
for (size_t i = 0; i < framesWritten; i++) {
bufp = &(tmpBuf[0]);
aviHeader_writeFourCC(bufp, "00dc");
size_t frameBytes = size_t(frameSizes[i]);
if (frameBytes > 0)
aviHeader_writeUInt32(bufp, 0x00000010U); // AVIIF_KEYFRAME
else
aviHeader_writeUInt32(bufp, 0x00000000U);
aviHeader_writeUInt32(bufp, uint32_t(filePos));
filePos = filePos + frameBytes + 8;
aviHeader_writeUInt32(bufp, uint32_t(frameBytes));
aviHeader_writeFourCC(bufp, "01wb");
aviHeader_writeUInt32(bufp, 0x00000010U); // AVIIF_KEYFRAME
aviHeader_writeUInt32(bufp, uint32_t(filePos));
frameBytes = size_t(audioBufSize) << 2;
filePos = filePos + frameBytes + 8;
aviHeader_writeUInt32(bufp, uint32_t(frameBytes));
fileSize = fileSize + 32;
if (std::fwrite(&(tmpBuf[0]), 1, 32, aviFile) != 32)
throw Exception("error writing AVI file index");
}
if (std::fseek(aviFile, 0L, SEEK_SET) < 0)
throw Exception("error seeking AVI file");
bufp = &(tmpBuf[0]);
aviHeader_writeFourCC(bufp, "RIFF");
aviHeader_writeUInt32(bufp, uint32_t(fileSize - 8));
if (std::fwrite(&(tmpBuf[0]), 1, 8, aviFile) != 8)
throw Exception("error writing AVI file index");
if (std::fflush(aviFile) != 0)
throw Exception("error writing AVI file index");
}
catch (...) {
std::fclose(aviFile);
aviFile = (std::FILE *) 0;
framesWritten = 0;
duplicateFrames = 0;
fileSize = 0;
throw;
}
}
// --------------------------------------------------------------------------
VideoCapture_YV12::VideoCapture_YV12(
void (*indexToRGBFunc)(uint8_t color, float& r, float& g, float& b),
int frameRate_)
: VideoCapture(frameRate_),
lineBuf((uint8_t *) 0),
frameBuf0Y((uint8_t *) 0),
frameBuf0V((uint8_t *) 0),
frameBuf0U((uint8_t *) 0),
frameBuf1Y((uint8_t *) 0),
frameBuf1V((uint8_t *) 0),
frameBuf1U((uint8_t *) 0),
interpBufY((int32_t *) 0),
interpBufV((int32_t *) 0),
interpBufU((int32_t *) 0),
outBufY((uint8_t *) 0),
outBufV((uint8_t *) 0),
outBufU((uint8_t *) 0),
duplicateFrameBitmap((uint8_t *) 0),
timesliceLength(0L),
curTime(0L),
frame0Time(-1L),
frame1Time(0L),
cycleCnt(2),
interpTime(0),
lineBufBytes(0),
colormap((uint32_t *) 0)
{
try {
aviHeaderSize = aviHeaderSize_YV12;
size_t bufSize1 = size_t(videoWidth * videoHeight);
size_t bufSize2 = 1024 / 4;
size_t bufSize3 = (bufSize1 + 3) >> 2;
size_t bufSize4 = (bufSize3 + 3) >> 2;
size_t totalSize = bufSize2;
totalSize += (3 * (bufSize3 + bufSize4 + bufSize4));
totalSize += (bufSize1 + bufSize3 + bufSize3);
uint32_t *videoBuf = new uint32_t[totalSize];
totalSize = 0;
lineBuf = reinterpret_cast<uint8_t *>(&(videoBuf[totalSize]));
std::memset(lineBuf, 0x00, 1024);
totalSize += bufSize2;
frameBuf0Y = reinterpret_cast<uint8_t *>(&(videoBuf[totalSize]));
std::memset(frameBuf0Y, 0x10, bufSize1);
totalSize += bufSize3;