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More work adapting the voice class.

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This commit is contained in:
Jonathan Naylor 2019-02-04 15:30:19 +00:00
parent c9e2f13058
commit 8ff7bc7f64
2 changed files with 16 additions and 128 deletions
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141
P25Gateway/Voice.cpp
View File

@ -16,7 +16,6 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "NXDNCRC.h"
#include "Voice.h"
#include "Log.h"
@ -88,17 +87,10 @@ const unsigned char REC80[] = {
const unsigned char SILENCE[] = { 0xF0U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x78U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U };
const unsigned char NXDN_FRAME_LENGTH = 33U;
const unsigned int NXDN_FRAME_TIME = 80U;
const unsigned int P25_FRAME_TIME = 20U;
const unsigned int SILENCE_LENGTH = 4U;
const unsigned int AMBE_LENGTH = 13U;
const unsigned char BIT_MASK_TABLE[] = { 0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04U, 0x02U, 0x01U };
#define WRITE_BIT1(p,i,b) p[(i)>>3] = (b) ? (p[(i)>>3] | BIT_MASK_TABLE[(i)&7]) : (p[(i)>>3] & ~BIT_MASK_TABLE[(i)&7])
#define READ_BIT1(p,i) (p[(i)>>3] & BIT_MASK_TABLE[(i)&7])
const unsigned int IMBE_LENGTH = 11U;
CVoice::CVoice(const std::string& directory, const std::string& language, unsigned int srcId) :
m_language(language),
@ -109,6 +101,7 @@ m_status(VS_NONE),
m_timer(1000U, 1U),
m_stopWatch(),
m_sent(0U),
m_n(0x62U),
m_imbe(NULL),
m_voiceData(NULL),
m_voiceLength(0U),
@ -156,8 +149,8 @@ bool CVoice::open()
return false;
}
FILE* fpambe = ::fopen(m_imbeFile.c_str(), "rb");
if (fpambe == NULL) {
FILE* fpimbe = ::fopen(m_imbeFile.c_str(), "rb");
if (fpimbe == NULL) {
LogError("Unable to open the AMBE file - %s", m_imbeFile.c_str());
::fclose(fpindx);
return false;
@ -224,93 +217,36 @@ void CVoice::unlinked()
void CVoice::createVoice(unsigned int tg, const std::vector<std::string>& words)
{
unsigned int imbeLength = 0U;
m_voiceLength = 0U;
for (std::vector<std::string>::const_iterator it = words.begin(); it != words.end(); ++it) {
if (m_positions.count(*it) > 0U) {
CPositions* position = m_positions.at(*it);
imbeLength += position->m_length;
m_voiceeLength += position->m_length;
} else {
LogWarning("Unable to find character/phrase \"%s\" in the index", (*it).c_str());
}
}
// Ensure that the AMBE is an integer number of NXDN frames
if ((ambeLength % (2U * AMBE_LENGTH)) != 0U)
ambeLength++;
// Add space for silence before and after the voice
ambeLength += SILENCE_LENGTH * IMBE_LENGTH;
ambeLength += SILENCE_LENGTH * IMBE_LENGTH;
m_voiceLength += SILENCE_LENGTH * IMBE_LENGTH;
m_voiceLength += SILENCE_LENGTH * IMBE_LENGTH;
unsigned char* ambeData = new unsigned char[ambeLength];
// Fill the AMBE data with silence
// Fill the IMBE data with silence
unsigned int offset = 0U;
for (unsigned int i = 0U; i < (ambeLength / AMBE_LENGTH); i++, offset += AMBE_LENGTH)
::memcpy(ambeData + offset, SILENCE, AMBE_LENGTH);
for (unsigned int i = 0U; i < (m_voiceLength / IMBE_LENGTH); i++, offset += IMBE_LENGTH)
::memcpy(m_voiceData + offset, SILENCE, IMBE_LENGTH);
// Put offset in for silence at the beginning
unsigned int pos = SILENCE_LENGTH * AMBE_LENGTH;
unsigned int pos = SILENCE_LENGTH * IMBE_LENGTH;
for (std::vector<std::string>::const_iterator it = words.begin(); it != words.end(); ++it) {
if (m_positions.count(*it) > 0U) {
CPositions* position = m_positions.at(*it);
unsigned int start = position->m_start;
unsigned int length = position->m_length;
::memcpy(ambeData + pos, m_ambe + start, length);
::memcpy(m_voiceData + pos, m_imbe + start, length);
pos += length;
}
}
m_voiceLength = 0U;
createHeader(true, tg);
unsigned char sacch[12U];
::memset(sacch, 0x00U, 12U);
sacch[0U] = 0x01U;
sacch[2U] = 0x20U;
sacch[3U] = (m_srcId >> 8) & 0xFFU;
sacch[4U] = (m_srcId >> 0) & 0xFFU;
sacch[5U] = (tg >> 8) & 0xFFU;
sacch[6U] = (tg >> 0) & 0xFFU;
unsigned int n = 0U;
for (unsigned int i = 0U; i < ambeLength; i += (2U * IMBE_LENGTH)) {
unsigned char* p = ambeData + i;
unsigned char buffer[NXDN_FRAME_LENGTH];
::memset(buffer, 0x00U, NXDN_FRAME_LENGTH);
buffer[0U] = 0xAEU;
switch (n) {
case 0U: buffer[1U] = 0xC1U; break;
case 1U: buffer[1U] = 0x81U; break;
case 2U: buffer[1U] = 0x41U; break;
default: buffer[1U] = 0x01U; break;
}
for (unsigned int j = 0U; j < 18U; j++) {
bool b = READ_BIT1(sacch, j + n * 18U);
WRITE_BIT1(buffer, j + 16U, b);
}
CNXDNCRC::encodeCRC6(buffer + 1U, 26U);
::memcpy(buffer + 5U + 0U, p + 0U, IMBE_LENGTH);
::memcpy(buffer + 5U + 14U, p + 13U, IMBE_LENGTH);
n = (n + 1U) % 4U;
::memcpy(m_voiceData + m_voiceLength, buffer, NXDN_FRAME_LENGTH);
m_voiceLength += NXDN_FRAME_LENGTH;
}
createTrailer(true, tg);
delete[] ambeData;
}
unsigned int CVoice::read(unsigned char* data)
@ -359,54 +295,7 @@ void CVoice::clock(unsigned int ms)
m_stopWatch.start();
m_status = VS_SENDING;
m_sent = 0U;
m_n = 0x62U;
}
}
}
void CVoice::createHeader(bool grp, unsigned int dstId)
{
unsigned char buffer[NXDN_FRAME_LENGTH];
::memset(buffer, 0x00U, NXDN_FRAME_LENGTH);
::memcpy(buffer, HEADER, 8U);
if (grp)
buffer[7U] = 0x20U;
buffer[8U] = (m_srcId >> 8) & 0xFFU;
buffer[9U] = (m_srcId >> 0) & 0xFFU;
buffer[10U] = (dstId >> 8) & 0xFFU;
buffer[11U] = (dstId >> 0) & 0xFFU;
CNXDNCRC::encodeCRC12(buffer + 5U, 80U);
::memcpy(buffer + 19U, buffer + 5U, 12U);
::memcpy(m_voiceData + m_voiceLength, buffer, NXDN_FRAME_LENGTH);
m_voiceLength += NXDN_FRAME_LENGTH;
}
void CVoice::createTrailer(bool grp, unsigned int dstId)
{
unsigned char buffer[NXDN_FRAME_LENGTH];
::memset(buffer, 0x00U, NXDN_FRAME_LENGTH);
::memcpy(buffer, TRAILER, 8U);
if (grp)
buffer[7U] = 0x20U;
buffer[8U] = (m_srcId >> 8) & 0xFFU;
buffer[9U] = (m_srcId >> 0) & 0xFFU;
buffer[10U] = (dstId >> 8) & 0xFFU;
buffer[11U] = (dstId >> 0) & 0xFFU;
CNXDNCRC::encodeCRC12(buffer + 5U, 80U);
::memcpy(buffer + 19U, buffer + 5U, 12U);
::memcpy(m_voiceData + m_voiceLength, buffer, NXDN_FRAME_LENGTH);
m_voiceLength += NXDN_FRAME_LENGTH;
}

3
P25Gateway/Voice.h
View File

@ -62,13 +62,12 @@ private:
CTimer m_timer;
CStopWatch m_stopWatch;
unsigned int m_sent;
unsigned int m_n;
unsigned char* m_imbe;
unsigned char* m_voiceData;
unsigned int m_voiceLength;
std::unordered_map<std::string, CPositions*> m_positions;
void createHeader(bool grp, unsigned int dstId);
void createTrailer(bool grp, unsigned int dstId);
void createVoice(unsigned int tg, const std::vector<std::string>& words);
};