From 304449002cbc84fdcf235b5dfaec891278dd7085 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 20 Feb 2006 04:05:16 +0000
Subject: 1) Add flexible seeking support (including absolute) for memory block
 queues and playback streams 2) Add support to synchronize multiple playback
 streams 3) add two tests for 1) and 2) 4) s/PA_ERROR/PA_ERR/ 5)
 s/PA_ERROR_OK/PA_OK/ 6) update simple API to deal properly with new peek/drop
 recording API 7) add beginnings of proper validity checking on API calls in
 client libs (needs to be extended) 8) report playback buffer
 overflows/underflows to the client 9) move client side recording mcalign
 stuff into the memblockq 10) create typedefs for a bunch of API callback
 prototypes 11) simplify handling of HUP poll() events

Yes, i know, it's usually better to commit a lot of small patches instead of a
single big one. In this case however, this would have contradicted the other
rule: never commit broken or incomplete stuff.

*** This stuff needs a lot of additional testing! ***


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@511 fefdeb5f-60dc-0310-8127-8f9354f1896f
---
 src/polyp/simple.c | 41 ++++++++++++++---------------------------
 1 file changed, 14 insertions(+), 27 deletions(-)

(limited to 'src/polyp/simple.c')

diff --git a/src/polyp/simple.c b/src/polyp/simple.c
index e14cab2e..8a20c223 100644
--- a/src/polyp/simple.c
+++ b/src/polyp/simple.c
@@ -45,13 +45,11 @@ struct pa_simple {
 
     int dead;
 
-    void *read_data;
+    const void *read_data;
     size_t read_index, read_length;
     pa_usec_t latency;
 };
 
-static void read_callback(pa_stream *s, const void*data, size_t length, void *userdata);
-
 static int check_error(pa_simple *p, int *rerror) {
     pa_context_state_t cst;
     pa_stream_state_t sst;
@@ -92,7 +90,7 @@ static int iterate(pa_simple *p, int block, int *rerror) {
     do {
         if (pa_mainloop_iterate(p->mainloop, 1, NULL) < 0) {
             if (rerror)
-                *rerror = PA_ERROR_INTERNAL;
+                *rerror = PA_ERR_INTERNAL;
             return -1;
         }
 
@@ -106,7 +104,7 @@ static int iterate(pa_simple *p, int block, int *rerror) {
 
         if (pa_mainloop_iterate(p->mainloop, 0, NULL) < 0) {
             if (rerror)
-                *rerror = PA_ERROR_INTERNAL;
+                *rerror = PA_ERR_INTERNAL;
             return -1;
         }
 
@@ -128,7 +126,7 @@ pa_simple* pa_simple_new(
     int *rerror) {
     
     pa_simple *p;
-    int error = PA_ERROR_INTERNAL;
+    int error = PA_ERR_INTERNAL;
     assert(ss && (dir == PA_STREAM_PLAYBACK || dir == PA_STREAM_RECORD));
 
     p = pa_xmalloc(sizeof(pa_simple));
@@ -157,7 +155,7 @@ pa_simple* pa_simple_new(
         goto fail;
 
     if (dir == PA_STREAM_PLAYBACK)
-        pa_stream_connect_playback(p->stream, dev, attr, 0, NULL);
+        pa_stream_connect_playback(p->stream, dev, attr, 0, NULL, NULL);
     else
         pa_stream_connect_record(p->stream, dev, attr, 0);
 
@@ -167,8 +165,6 @@ pa_simple* pa_simple_new(
             goto fail;
     }
 
-    pa_stream_set_read_callback(p->stream, read_callback, p);
-    
     return p;
     
 fail:
@@ -181,8 +177,6 @@ fail:
 void pa_simple_free(pa_simple *s) {
     assert(s);
 
-    pa_xfree(s->read_data);
-
     if (s->stream)
         pa_stream_unref(s->stream);
     
@@ -215,7 +209,7 @@ int pa_simple_write(pa_simple *p, const void*data, size_t length, int *rerror) {
         if (l > length)
             l = length;
 
-        pa_stream_write(p->stream, data, l, NULL, 0);
+        pa_stream_write(p->stream, data, l, NULL, 0, PA_SEEK_RELATIVE);
         data = (const uint8_t*) data + l;
         length -= l;
     }
@@ -227,19 +221,6 @@ int pa_simple_write(pa_simple *p, const void*data, size_t length, int *rerror) {
     return 0;
 }
 
-static void read_callback(pa_stream *s, const void*data, size_t length, void *userdata) {
-    pa_simple *p = userdata;
-    assert(s && data && length && p);
-
-    if (p->read_data) {
-        pa_log(__FILE__": Buffer overflow, dropping incoming memory blocks.\n");
-        pa_xfree(p->read_data);
-    }
-
-    p->read_data = pa_xmemdup(data, p->read_length = length);
-    p->read_index = 0;
-}
-
 int pa_simple_read(pa_simple *p, void*data, size_t length, int *rerror) {
     assert(p && data && p->direction == PA_STREAM_RECORD);
 
@@ -251,13 +232,18 @@ int pa_simple_read(pa_simple *p, void*data, size_t length, int *rerror) {
     }
     
     while (length > 0) {
+
+        if (!p->read_data) 
+            if (pa_stream_peek(p->stream, &p->read_data, &p->read_length) >= 0)
+                p->read_index = 0;
+        
         if (p->read_data) {
             size_t l = length;
 
             if (p->read_length <= l)
                 l = p->read_length;
 
-            memcpy(data, (uint8_t*) p->read_data+p->read_index, l);
+            memcpy(data, (const uint8_t*) p->read_data+p->read_index, l);
 
             data = (uint8_t*) data + l;
             length -= l;
@@ -266,8 +252,9 @@ int pa_simple_read(pa_simple *p, void*data, size_t length, int *rerror) {
             p->read_length -= l;
 
             if (!p->read_length) {
-                pa_xfree(p->read_data);
+                pa_stream_drop(p->stream);
                 p->read_data = NULL;
+                p->read_length = 0;
                 p->read_index = 0;
             }
             
-- 
cgit