Changeset 2e01b3f in mainline for uspace/lib/drv/generic/remote_audio_pcm.c

Timestamp:

2012-07-19T17:43:47Z (11 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial

Children:

f0241bda

Parents:

c5cbc1b7

Message:

libdrv: Add method to query audio capabilities.

File:

• uspace/lib/drv/generic/remote_audio_pcm.c (modified) (5 diffs)

uspace/lib/drv/generic/remote_audio_pcm.c

@@ -45 +45 @@
 typedef enum {
         IPC_M_AUDIO_PCM_GET_INFO_STR,
+        IPC_M_AUDIO_PCM_QUERY_CAPS,
         IPC_M_AUDIO_PCM_TEST_FORMAT,
         IPC_M_AUDIO_PCM_GET_BUFFER,
@@ -104 +105 @@
         }
         async_exchange_end(exch);
+        return ret;
+}
+
+int audio_pcm_query_cap(audio_pcm_sess_t *sess, audio_cap_t cap, unsigned *val)
+{
+        if (!val)
+                return EINVAL;
+        async_exch_t *exch = async_exchange_begin(sess);
+        sysarg_t value = *val;
+        const int ret = async_req_2_1(exch,
+            DEV_IFACE_ID(AUDIO_PCM_BUFFER_IFACE), IPC_M_AUDIO_PCM_QUERY_CAPS,
+            value, &value);
+        if (ret == EOK)
+                *val = value;
         return ret;
 }
@@ -232 +247 @@
  */
 static void remote_audio_pcm_get_info_str(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_audio_pcm_query_caps(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
 static void remote_audio_pcm_test_format(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
 static void remote_audio_pcm_get_buffer(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
@@ -243 +259 @@
 static remote_iface_func_ptr_t remote_audio_pcm_iface_ops[] = {
         [IPC_M_AUDIO_PCM_GET_INFO_STR] = remote_audio_pcm_get_info_str,
+        [IPC_M_AUDIO_PCM_QUERY_CAPS] = remote_audio_pcm_query_caps,
         [IPC_M_AUDIO_PCM_TEST_FORMAT] = remote_audio_pcm_test_format,
         [IPC_M_AUDIO_PCM_GET_BUFFER] = remote_audio_pcm_get_buffer,
@@ -288 +305 @@
 }
 
-static void remote_audio_pcm_test_format(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+void remote_audio_pcm_query_caps(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+        const audio_pcm_iface_t *pcm_iface = iface;
+        const audio_cap_t cap = DEV_IPC_GET_ARG1(*call);
+        if (pcm_iface->query_cap) {
+                const unsigned value = pcm_iface->query_cap(fun, cap);
+                async_answer_1(callid, EOK, value);
+        } else {
+                async_answer_0(callid, ENOTSUP);
+        }
+}
+
+void remote_audio_pcm_test_format(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
 {
         const audio_pcm_iface_t *pcm_iface = iface;