Update chan_console to natively use a 16 kHz sample rate. If it is talking
to an 8 kHz endpoint, then codec_resample will automatically be used to properly resample the audio before sending it to/from chan_console. git-svn-id: http://svn.digium.com/svn/asterisk/trunk@95527 f38db490-d61c-443f-a65b-d21fe96a405b
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@ -67,28 +67,22 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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/*!
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* \brief The sample rate to request from PortAudio
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*
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* \note This should be changed to 16000 once there is a translator for going
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* between SLINEAR and SLINEAR16. Making it a configuration parameter
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* would be even better, but 16 kHz should be the default.
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*
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* \note If this changes, NUM_SAMPLES will need to change, as well.
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* \todo Make this optional. If this is only going to talk to 8 kHz endpoints,
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* then it makes sense to use 8 kHz natively.
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*/
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#define SAMPLE_RATE 8000
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#define SAMPLE_RATE 16000
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/*!
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* \brief The number of samples to configure the portaudio stream for
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*
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* 160 samples (20 ms) is the most common frame size in Asterisk. So, the code
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* in this module reads 160 sample frames from the portaudio stream and queues
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* them up on the Asterisk channel. Frames of any sizes can be written to a
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* 320 samples (20 ms) is the most common frame size in Asterisk. So, the code
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* in this module reads 320 sample frames from the portaudio stream and queues
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* them up on the Asterisk channel. Frames of any size can be written to a
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* portaudio stream, but the portaudio documentation does say that for high
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* performance applications, the data should be written to Pa_WriteStream in
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* the same size as what is used to initialize the stream.
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*
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* \note This will need to be dynamic once the sample rate can be something
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* other than 8 kHz.
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*/
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#define NUM_SAMPLES 160
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#define NUM_SAMPLES 320
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/*! \brief Mono Input */
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#define INPUT_CHANNELS 1
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@ -198,10 +192,8 @@ static int console_fixup(struct ast_channel *oldchan, struct ast_channel *newcha
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/*!
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* \brief Formats natively supported by this module.
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*
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* \note Once 16 kHz is supported, AST_FORMAT_SLINEAR16 needs to be added.
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*/
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#define SUPPORTED_FORMATS ( AST_FORMAT_SLINEAR )
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#define SUPPORTED_FORMATS ( AST_FORMAT_SLINEAR16 )
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static const struct ast_channel_tech console_tech = {
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.type = "Console",
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@ -243,7 +235,7 @@ static void *stream_monitor(void *data)
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PaError res;
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struct ast_frame f = {
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.frametype = AST_FRAME_VOICE,
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.subclass = AST_FORMAT_SLINEAR,
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.subclass = AST_FORMAT_SLINEAR16,
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.src = "console_stream_monitor",
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.data = buf,
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.datalen = sizeof(buf),
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@ -335,9 +327,9 @@ static struct ast_channel *console_new(struct console_pvt *pvt, const char *ext,
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}
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chan->tech = &console_tech;
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chan->nativeformats = AST_FORMAT_SLINEAR;
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chan->readformat = AST_FORMAT_SLINEAR;
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chan->writeformat = AST_FORMAT_SLINEAR;
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chan->nativeformats = AST_FORMAT_SLINEAR16;
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chan->readformat = AST_FORMAT_SLINEAR16;
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chan->writeformat = AST_FORMAT_SLINEAR16;
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chan->tech_pvt = pvt;
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pvt->owner = chan;
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