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Add P25 silence frame.

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This commit is contained in:
Jonathan Naylor 2019-02-05 13:47:43 +00:00
parent 27f8434286
commit e9c0317454
1 changed files with 5 additions and 3 deletions
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8
P25Gateway/Voice.cpp
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@ -85,13 +85,15 @@ const unsigned char REC73[] = {
const unsigned char REC80[] = {
0x80U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U };
const unsigned char SILENCE[] = { 0xF0U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x78U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U };
const unsigned char SILENCE[] = { 0x04U, 0x0CU, 0xFDU, 0x7BU, 0xFBU, 0x7DU, 0xF2U, 0x7BU, 0x3DU, 0x9EU, 0x44U };
const unsigned int P25_FRAME_TIME = 20U;
const unsigned int SILENCE_LENGTH = 4U;
const unsigned int IMBE_LENGTH = 11U;
const unsigned int LDU_LENGTH = 9U;
CVoice::CVoice(const std::string& directory, const std::string& language, unsigned int srcId) :
m_language(language),
m_indxFile(),
@ -235,9 +237,9 @@ void CVoice::createVoice(unsigned int tg, const std::vector<std::string>& words)
m_voiceLength += SILENCE_LENGTH * IMBE_LENGTH;
// Round to the next highest LDU frame length
unsigned int n = (m_voiceLength / IMBE_LENGTH) % 9U;
unsigned int n = (m_voiceLength / IMBE_LENGTH) % LDU_LENGTH;
if (n > 0U)
m_voiceLength += (9U - n) * IMBE_LENGTH;
m_voiceLength += (LDU_LENGTH - n) * IMBE_LENGTH;
// Fill the IMBE data with silence
unsigned int offset = 0U;