Changeset 762 for pjproject/trunk/pjmedia/src/pjmedia/pasound.c

Timestamp:

Oct 11, 2006 2:57:18 PM (18 years ago)

Author:

bennylp

Message:

Changed pasound.c to open multiple streams when input/output are on different devices

File:

• pjproject/trunk/pjmedia/src/pjmedia/pasound.c (modified) (15 diffs)

pjproject/trunk/pjmedia/src/pjmedia/pasound.c

@@ -51 +51 @@
     int                  channel_count;
 
-    PaStream            *stream;
+    PaStream            *rec_strm;
+    PaStream            *play_strm;
+
     void                *user_data;
     pjmedia_snd_rec_cb   rec_cb;
@@ -387 +389 @@
     paFrames = samples_per_frame / channel_count;
 
-    err = Pa_OpenStream( &stream->stream, &inputParam, NULL,
+    err = Pa_OpenStream( &stream->rec_strm, &inputParam, NULL,
                          clock_rate, paFrames, 
                          paClipOff, &PaRecorderCallback, stream );
@@ -395 +397 @@
     }
 
-    paSI = Pa_GetStreamInfo(stream->stream);
+    paSI = Pa_GetStreamInfo(stream->rec_strm);
     paRate = (unsigned)paSI->sampleRate;
     paLatency = (unsigned)(paSI->inputLatency * 1000);
@@ -483 +485 @@
     paFrames = samples_per_frame / channel_count;
 
-    err = Pa_OpenStream( &stream->stream, NULL, &outputParam,
+    err = Pa_OpenStream( &stream->play_strm, NULL, &outputParam,
                          clock_rate,  paFrames, 
                          paClipOff, &PaPlayerCallback, stream );
@@ -491 +493 @@
     }
 
-    paSI = Pa_GetStreamInfo(stream->stream);
+    paSI = Pa_GetStreamInfo(stream->play_strm);
     paRate = (unsigned)(paSI->sampleRate);
     paLatency = (unsigned)(paSI->outputLatency * 1000);
@@ -524 +526 @@
     pj_pool_t *pool;
     pjmedia_snd_stream *stream;
+    PaStream *paStream = NULL;
     PaStreamParameters inputParam;
     PaStreamParameters outputParam;
@@ -612 +615 @@
     paFrames = samples_per_frame / channel_count;
 
-    err = Pa_OpenStream( &stream->stream, &inputParam, &outputParam,
-                         clock_rate, paFrames, 
-                         paClipOff, &PaRecorderPlayerCallback, stream );
+    /* If both input and output are on the same device, open a single stream
+     * for both input and output.
+     */
+    if (rec_id == play_id) {
+        err = Pa_OpenStream( &paStream, &inputParam, &outputParam,
+                             clock_rate, paFrames, 
+                             paClipOff, &PaRecorderPlayerCallback, stream );
+        if (err == paNoError) {
+            /* Set play stream and record stream to the same stream */
+            stream->play_strm = stream->rec_strm = paStream;
+        }
+    } else {
+        err = -1;
+    }
+
+    /* .. otherwise if input and output are on the same device, OR if we're
+     * unable to open a bidirectional stream, then open two separate
+     * input and output stream.
+     */
+    if (paStream == NULL) {
+        /* Open input stream */
+        err = Pa_OpenStream( &stream->rec_strm, &inputParam, NULL,
+                             clock_rate, paFrames, 
+                             paClipOff, &PaRecorderCallback, stream );
+        if (err == paNoError) {
+            /* Open output stream */
+            err = Pa_OpenStream( &stream->play_strm, NULL, &outputParam,
+                                 clock_rate, paFrames, 
+                                 paClipOff, &PaPlayerCallback, stream );
+            if (err != paNoError)
+                Pa_CloseStream(stream->rec_strm);
+        }
+    }
+
     if (err != paNoError) {
         pj_pool_release(pool);
@@ -620 +654 @@
     }
 
-    paSI = Pa_GetStreamInfo(stream->stream);
+    paSI = Pa_GetStreamInfo(stream->rec_strm);
     paRate = (unsigned)(paSI->sampleRate);
     paInputLatency = (unsigned)(paSI->inputLatency * 1000);
+    paSI = Pa_GetStreamInfo(stream->play_strm);
     paOutputLatency = (unsigned)(paSI->outputLatency * 1000);
 
@@ -648 +683 @@
                                                 pjmedia_snd_stream_info *pi)
 {
-    const PaStreamInfo *paSI;
+    const PaStreamInfo *paPlaySI = NULL, *paRecSI = NULL;
 
     PJ_ASSERT_RETURN(strm && pi, PJ_EINVAL);
-    PJ_ASSERT_RETURN(strm->stream, PJ_EINVALIDOP);
-
-    paSI = Pa_GetStreamInfo(strm->stream);
+    PJ_ASSERT_RETURN(strm->play_strm || strm->rec_strm, PJ_EINVALIDOP);
+
+    if (strm->play_strm) {
+        paPlaySI = Pa_GetStreamInfo(strm->play_strm);
+    }
+    if (strm->rec_strm) {
+        paRecSI = Pa_GetStreamInfo(strm->rec_strm);
+    }
 
     pj_bzero(pi, sizeof(*pi));
@@ -659 +699 @@
     pi->play_id = strm->play_id;
     pi->rec_id = strm->rec_id;
-    pi->clock_rate = (unsigned)(paSI->sampleRate);
+    pi->clock_rate = (unsigned)(paPlaySI ? paPlaySI->sampleRate : 
+                                paRecSI->sampleRate);
     pi->channel_count = strm->channel_count;
     pi->samples_per_frame = strm->samples_per_frame;
     pi->bits_per_sample = strm->bytes_per_sample * 8;
-    pi->rec_latency = (unsigned)(paSI->inputLatency * paSI->sampleRate);
-    pi->play_latency = (unsigned)(paSI->outputLatency * paSI->sampleRate);
+    pi->rec_latency = (unsigned)(paRecSI ? paRecSI->inputLatency * 
+                                           paRecSI->sampleRate : 0);
+    pi->play_latency = (unsigned)(paPlaySI ? paPlaySI->outputLatency * 
+                                             paPlaySI->sampleRate : 0);
 
     return PJ_SUCCESS;
@@ -675 +718 @@
 PJ_DEF(pj_status_t) pjmedia_snd_stream_start(pjmedia_snd_stream *stream)
 {
-    pj_status_t err;
+    int err = 0;
 
     PJ_LOG(5,(THIS_FILE, "Starting %s stream..", stream->name.ptr));
 
-    err = Pa_StartStream(stream->stream);
+    if (stream->play_strm)
+        err = Pa_StartStream(stream->play_strm);
+
+    if (err==0 && stream->rec_strm && stream->rec_strm != stream->play_strm) {
+        err = Pa_StartStream(stream->rec_strm);
+        if (err != 0)
+            Pa_StopStream(stream->play_strm);
+    }
 
     PJ_LOG(5,(THIS_FILE, "Done, status=%d", err));
@@ -691 +741 @@
 PJ_DEF(pj_status_t) pjmedia_snd_stream_stop(pjmedia_snd_stream *stream)
 {
-    int i, err;
+    int i, err = 0;
 
     stream->quit_flag = 1;
@@ -701 +751 @@
     PJ_LOG(5,(THIS_FILE, "Stopping stream.."));
 
-    err = Pa_StopStream(stream->stream);
+    if (stream->play_strm)
+        err = Pa_StopStream(stream->play_strm);
+
+    if (stream->rec_strm && stream->rec_strm != stream->play_strm)
+        err = Pa_StopStream(stream->rec_strm);
 
     PJ_LOG(5,(THIS_FILE, "Done, status=%d", err));
@@ -713 +767 @@
 PJ_DEF(pj_status_t) pjmedia_snd_stream_close(pjmedia_snd_stream *stream)
 {
-    int i, err;
+    int i, err = 0;
 
     stream->quit_flag = 1;
@@ -725 +779 @@
                          stream->underflow, stream->overflow));
 
-    err = Pa_CloseStream(stream->stream);
+    if (stream->play_strm)
+        err = Pa_CloseStream(stream->play_strm);
+
+    if (stream->rec_strm && stream->rec_strm != stream->play_strm)
+        err = Pa_CloseStream(stream->rec_strm);
+
     pj_pool_release(stream->pool);