Changeset 6eeaf1d in mainline

Timestamp:

2013-04-11T22:29:14Z (11 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

4e72a4c

Parents:

4eff63c

Message:

hound: implement context sink

File:

• uspace/srv/audio/hound/hound_ctx.c (modified) (7 diffs)

uspace/srv/audio/hound/hound_ctx.c

@@ -37 +37 @@
 #include <malloc.h>
 #include <macros.h>
+#include <errno.h>
+#include <str_error.h>
 
 #include "hound_ctx.h"
@@ -44 +46 @@
 
 static int update_data(audio_source_t *source, size_t size);
+static int new_data(audio_sink_t *sink);
 
 /**
@@ -65 +68 @@
                         return NULL;
                 }
-                // TODO provide sink functions
                 const int ret = audio_sink_init(ctx->sink, name, ctx, NULL,
-                    NULL, NULL, &AUDIO_FORMAT_DEFAULT);
+                    NULL, new_data, &AUDIO_FORMAT_DEFAULT);
                 if (ret != EOK) {
                         free(ctx->sink);
@@ -202 +204 @@
 
 /**
+ * Push new data to stream, do not block.
+ * @param stream The target stream.
+ * @param adata The new data.
+ * @return Error code.
+ */
+static int stream_push_data(hound_ctx_stream_t *stream, audio_data_t *adata)
+{
+        assert(stream);
+        assert(adata);
+
+        if (stream->allowed_size && adata->size > stream->allowed_size)
+                return EINVAL;
+
+        fibril_mutex_lock(&stream->guard);
+        if (stream->allowed_size &&
+            (audio_pipe_bytes(&stream->fifo) + adata->size
+                > stream->allowed_size)) {
+                fibril_mutex_unlock(&stream->guard);
+                return EOVERFLOW;
+
+        }
+
+        const int ret = audio_pipe_push(&stream->fifo, adata);
+        fibril_mutex_unlock(&stream->guard);
+        if (ret == EOK)
+                fibril_condvar_signal(&stream->change);
+        return ret;
+}
+
+/**
  * Old stream remove helper.
  * @param ctx hound context.
@@ -293 +325 @@
             audio_pipe_push_data(&stream->fifo, data, size, stream->format);
         fibril_mutex_unlock(&stream->guard);
+        if (ret == EOK)
+                fibril_condvar_signal(&stream->change);
         return ret;
 }
@@ -305 +339 @@
 int hound_ctx_stream_read(hound_ctx_stream_t *stream, void *data, size_t size)
 {
-        log_verbose("%p:, %zu", stream, size);
-        return ENOTSUP;
+        assert(stream);
+
+        if (stream->allowed_size && size > stream->allowed_size)
+                return EINVAL;
+
+        fibril_mutex_lock(&stream->guard);
+        while (audio_pipe_bytes(&stream->fifo) < size) {
+            fibril_condvar_wait(&stream->change, &stream->guard);
+        }
+
+        pcm_format_silence(data, size, &stream->format);
+        const int ret =
+            audio_pipe_mix_data(&stream->fifo, data, size, &stream->format);
+        fibril_mutex_unlock(&stream->guard);
+        if (ret == EOK)
+                fibril_condvar_signal(&stream->change);
+        return ret;
 }
 
@@ -385 +434 @@
 }
 
+int new_data(audio_sink_t *sink)
+{
+        assert(sink);
+        assert(sink->private_data);
+        hound_ctx_t *ctx = sink->private_data;
+
+        fibril_mutex_lock(&ctx->guard);
+
+        /* count available data */
+        size_t available_frames = -1;  /* this is ugly.... */
+        list_foreach(sink->connections, it) {
+                connection_t *conn = connection_from_source_list(it);
+                available_frames = min(available_frames,
+                    audio_pipe_frames(&conn->fifo));
+        }
+
+        const size_t bsize =
+            available_frames * pcm_format_frame_size(&sink->format);
+        void *buffer = malloc(bsize);
+        if (!buffer) {
+                fibril_mutex_unlock(&ctx->guard);
+                return ENOMEM;
+        }
+        audio_data_t *adata = audio_data_create(buffer, bsize, sink->format);
+        if (!adata) {
+                fibril_mutex_unlock(&ctx->guard);
+                free(buffer);
+                return ENOMEM;
+        }
+
+        /* mix data */
+        pcm_format_silence(buffer, bsize, &sink->format);
+        list_foreach(sink->connections, it) {
+                connection_t *conn = connection_from_source_list(it);
+                /* This should not trigger data update on the source */
+                const size_t copied = connection_add_source_data(
+                    conn, buffer, bsize, sink->format);
+                if (copied != bsize)
+                        log_error("Copied less than advertised data, "
+                            "something is wrong");
+        }
+        /* push to all streams */
+        list_foreach(ctx->streams, it) {
+                hound_ctx_stream_t *stream = hound_ctx_stream_from_link(it);
+                const int ret = stream_push_data(stream, adata);
+                if (ret != EOK)
+                        log_error("Failed to push data to stream: %s",
+                                str_error(ret));
+        }
+        audio_data_unref(adata);
+        fibril_mutex_unlock(&ctx->guard);
+        return ENOTSUP;
+}
+
 /**
  * @}