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Copy pathencodervorbis.cpp
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188 lines (177 loc) · 5.38 KB
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#include "encodervorbis.h"
EncoderVorbis::EncoderVorbis(EncoderConfig c)
: Encoder(c)
{
// 5k seems to be a good value for std settings
resize(5000);
}
EncoderVorbis::~EncoderVorbis(void)
{
if (!_initialized) {
ogg_stream_clear(&_oss);
vorbis_block_clear(&_vb);
vorbis_dsp_clear(&_vdsp);
vorbis_comment_init(&_vc);
vorbis_info_clear(&_vi);
}
delete[] _buffer;
}
bool EncoderVorbis::init()
{
int ret = 0;
vorbis_info_init(&_vi);
if (_config.mode == EncoderConfig::CBR) {
ret = vorbis_encode_init(&_vi,
_config.numInChannels,
_config.sampleRateIn,
_config.quality * 1000,
_config.quality * 1000,
_config.quality * 1000);
}
else if (_config.mode == EncoderConfig::VBR) {
ret = vorbis_encode_init_vbr(&_vi,
_config.numInChannels,
_config.sampleRateIn,
_config.quality);
}
if (ret != 0) {
handleRC(ret);
return false;
}
vorbis_analysis_init(&_vdsp, &_vi);
vorbis_comment_init(&_vc);
vorbis_comment_add_tag(&_vc, "ENCODER", "appStream");
vorbis_block_init(&_vdsp, &_vb);
emit message("Vorbis initialized");
emit message("Version: " + getVersion());
_initialized = true;
return true;
}
void EncoderVorbis::setup()
{
ogg_packet header;
ogg_packet header_comm;
ogg_packet header_code;
ogg_stream_init(&_oss, qrand());
vorbis_analysis_headerout(&_vdsp,
&_vc,
&header,
&header_comm,
&header_code);
ogg_stream_packetin(&_oss, &header);
ogg_stream_packetin(&_oss, &header_comm);
ogg_stream_packetin(&_oss, &header_code);
while (1) {
int res = ogg_stream_flush(&_oss, &_opg);
if (res == 0)
break;
if (_bufferSize < (_bufferValid + _opg.header_len + _opg.body_len))
resize(_bufferValid + _opg.header_len + _opg.body_len);
memcpy(_buffer + _bufferValid, _opg.header, _opg.header_len);
_bufferValid += _opg.header_len;
memcpy(_buffer + _bufferValid, _opg.body, _opg.body_len);
_bufferValid += _opg.body_len;
}
}
void EncoderVorbis::encode(sample_t* buffer, uint32_t samples)
{
_bufferValid = 0;
int eos = 0;
int res;
uint32_t i;
float** vbuffer;
vbuffer = vorbis_analysis_buffer(&_vdsp, samples);
if (_config.numInChannels == 1) {
for (i = 0; i < samples; ++i)
vbuffer[0][i] = buffer[i];
}
else {
for (i = 0; i < (samples >> 1); ++i) {
vbuffer[0][i] = buffer[i << 1];
vbuffer[1][i] = buffer[(i << 1) + 1];
}
}
vorbis_analysis_wrote(&_vdsp, i);
while (vorbis_analysis_blockout(&_vdsp, &_vb)) {
vorbis_analysis(&_vb, &_opk);
vorbis_bitrate_addblock(&_vb);
while (vorbis_bitrate_flushpacket(&_vdsp, &_opk)) {
ogg_stream_packetin(&_oss, &_opk);
while (!eos) {
res = ogg_stream_pageout(&_oss, &_opg);
if (res == 0)
break;
if (_bufferSize < (_bufferValid + _opg.header_len + _opg.body_len))
resize(_bufferValid + _opg.header_len + _opg.body_len);
memcpy(_buffer + _bufferValid, _opg.header, _opg.header_len);
_bufferValid += _opg.header_len;
memcpy(_buffer + _bufferValid, _opg.body, _opg.body_len);
_bufferValid += _opg.body_len;
if (ogg_page_eos(&_opg))
eos = 1;
}
}
}
}
void EncoderVorbis::finalize()
{
int eos = 0;
int res;
vorbis_analysis_wrote(&_vdsp, 0);
while (vorbis_analysis_blockout(&_vdsp, &_vb)) {
vorbis_analysis(&_vb, &_opk);
vorbis_bitrate_addblock(&_vb);
while (vorbis_bitrate_flushpacket(&_vdsp, &_opk)) {
ogg_stream_packetin(&_oss, &_opk);
while (!eos) {
res = ogg_stream_pageout(&_oss, &_opg);
if (res == 0)
break;
if (_bufferSize < (_bufferValid + _opg.header_len + _opg.body_len))
resize(_bufferValid + _opg.header_len + _opg.body_len);
memcpy(_buffer + _bufferValid, _opg.header, _opg.header_len);
_bufferValid += _opg.header_len;
memcpy(_buffer + _bufferValid, _opg.body, _opg.body_len);
_bufferValid += _opg.body_len;
if (ogg_page_eos(&_opg))
eos = 1;
}
}
}
}
QString EncoderVorbis::getVersion() const
{
const char* p = vorbis_version_string();
return QString(p);
}
QString EncoderVorbis::getFileExtension() const
{
return QString("ogg");
}
void EncoderVorbis::handleRC(int rc) const
{
switch (rc) {
case OV_EFAULT:
emit error("internal vorbis fault");
break;
case OV_EINVAL:
emit error("vorbis setup seems invalid");
break;
case OV_EIMPL:
emit error("vorbis mode not implemented");
break;
default:
emit error("vorbis error occurred");
}
}
void EncoderVorbis::resize(uint32_t newSize)
{
if (newSize < _bufferSize)
return;
char* buffer = new char[newSize];
assert(buffer);
memcpy(buffer, _buffer, _bufferSize);
delete[] _buffer;
_bufferSize = newSize;
_buffer = buffer;
}