Changeset 463:67ff080cf77a in roaraudio for libroararts

Timestamp:

08/12/08 08:17:51 (16 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

done basic work

File:

• libroararts/libartsc.c (modified) (1 diff)

libroararts/libartsc.c

@@ -1 +1 @@
 //libartsc.c:
 
+#include <roaraudio.h>
+#include <kde/artsc/artsc.h>
+
+struct roar_connection _libroarartsc_connection[1];
+
+struct _libroarartsc_stream {
+ struct roar_stream stream;
+ int fh;
+ int blocking;
+};
+
+int arts_init(void) {
+ return roar_simple_connect(_libroarartsc_connection, NULL, "libroarartsc client");
+}
+
+void arts_free(void) {
+ roar_disconnect(_libroarartsc_connection);
+}
+
+/**
+ * asks aRtsd to free the DSP device and return 1 if it was successful,
+ * 0 if there were active non-suspendable modules
+ */
+int arts_suspend(void) {
+ return roar_set_standby(_libroarartsc_connection, ROAR_STANDBY_ACTIVE) == 0 ? 1 : 0;
+}
+
+/**
+ * asks aRtsd if the DSP device is free and return 1 if it is,
+ * 0 if not
+ */
+int arts_suspended(void) {
+ return roar_get_standby(_libroarartsc_connection) == ROAR_STANDBY_ACTIVE;
+}
+
+
+/**
+ * converts an error code to a human readable error message
+ *
+ * @param errorcode the errorcode (from another arts function that failed)
+ * @returns a text string with the error message
+ */
+const char *arts_error_text(int errorcode) {
+ return strerror(errorcode);
+}
+
+/**
+ * open a stream for playing
+ *
+ * @param rate the sampling rate (something like 44100)
+ * @param bits how many bits each sample has (8 or 16)
+ * @param channels how many channels, 1 is mono, 2 is stereo
+ * @param name the name of the stream (these will be used so that the user can
+ *          assign streams to effects/mixer channels and similar)
+ *
+ * @return a stream
+ */
+arts_stream_t arts_play_stream(int rate, int bits, int channels, const char *name) {
+ struct _libroarartsc_stream * s = malloc(sizeof(struct _libroarartsc_stream));
+ struct roar_meta meta;
+
+ if ( !s )
+  return NULL;
+
+ if ( (s->fh = roar_simple_new_stream_obj(_libroarartsc_connection, &(s->stream),
+                                 rate, channels, bits, ROAR_CODEC_DEFAULT, ROAR_DIR_PLAY)) == -1 ) {
+  free(s);
+  return NULL;
+ }
+
+ s->blocking = 1;
+
+ if ( name && *name ) {
+  meta.value  = (char*)name;
+  meta.key[0] = 0;
+  meta.type   = ROAR_META_TYPE_DESCRIPTION;
+
+  roar_stream_meta_set(_libroarartsc_connection, &(s->stream), ROAR_META_MODE_SET, &meta);
+ }
+
+ return (arts_stream_t) s;
+}
+
+/**
+ * open a stream for recording
+ *
+ * @param rate the sampling rate (something like 44100)
+ * @param bits how many bits each sample has (8 or 16)
+ * @param channels how many channels, 1 is mono, 2 is stereo
+ * @param name the name of the stream (these will be used so that the user can
+ *          assign streams to effects/mixer channels and similar)
+ *
+ * @return a stream
+ */
+arts_stream_t arts_record_stream(int rate, int bits, int channels, const char *name) {
+ struct _libroarartsc_stream * s = malloc(sizeof(struct _libroarartsc_stream));
+ struct roar_meta meta;
+
+ if ( !s )
+  return NULL;
+
+ if ( (s->fh = roar_simple_new_stream_obj(_libroarartsc_connection, &(s->stream),
+                                 rate, channels, bits, ROAR_CODEC_DEFAULT, ROAR_DIR_RECORD)) == -1 ) {
+  free(s);
+  return NULL;
+ }
+
+ s->blocking = 1;
+
+ if ( name && *name ) {
+  meta.value  = (char*)name;
+  meta.key[0] = 0;
+  meta.type   = ROAR_META_TYPE_DESCRIPTION;
+
+  roar_stream_meta_set(_libroarartsc_connection, &(s->stream), ROAR_META_MODE_SET, &meta);
+ }
+
+ return (arts_stream_t) s;
+}
+
+/**
+ * close a stream
+ */
+void arts_close_stream(arts_stream_t stream) {
+ struct _libroarartsc_stream * s = (struct _libroarartsc_stream *) stream;
+ if ( !stream )
+  return;
+
+ close(s->fh);
+
+ free(stream);
+}
+
+/**
+ * read samples from stream
+ *
+ * @param stream a previously opened record stream
+ * @param buffer a buffer with sample data
+ * @param count the number of bytes contained in the buffer
+ *
+ * @returns number of read bytes on success or error code
+ */
+int arts_read(arts_stream_t stream, void *buffer, int count) {
+ struct _libroarartsc_stream * s = (struct _libroarartsc_stream *) stream;
+ if ( !stream )
+  return -1;
+
+ return read(s->fh, buffer, count);
+}
+
+/**
+ * write samples to to stream
+ *
+ * @param stream a previously opened play stream
+ * @param buffer a buffer with sample data
+ * @param count the number of bytes contained in the buffer
+ *
+ * @returns number of written bytes on success or error code
+ */
+int arts_write(arts_stream_t stream, const void *buffer, int count) {
+ struct _libroarartsc_stream * s = (struct _libroarartsc_stream *) stream;
+ if ( !stream )
+  return -1;
+
+ return write(s->fh, buffer, count);
+}
+
+/**
+ * configure a parameter of a stream
+ *
+ * @param stream an opened record or play stream
+ * @param parameter the parameter you want to modify
+ * @param value the new value
+ *
+ * @returns the new value of the parameter (which may or may not be the value
+ *          you wanted to have), or an error code if something went wrong
+ */
+int arts_stream_set(arts_stream_t stream, arts_parameter_t param, int value) {
+ struct _libroarartsc_stream * s = (struct _libroarartsc_stream *) stream;
+ if ( !stream )
+  return -1;
+
+ if ( param == ARTS_P_BLOCKING ) {
+  if ( roar_socket_nonblock(s->fh, value ? ROAR_SOCKET_BLOCK : ROAR_SOCKET_NONBLOCK) == -1 )
+   return -1;
+  return arts_stream_get(stream, param);
+ }
+
+ return -1;
+}
+
+/**
+ * query a parameter of a stream
+ *
+ * @param stream an opened record or play stream
+ * @param parameter the parameter you want to query
+ *
+ * @returns the value of the parameter, or an error code
+ */
+int arts_stream_get(arts_stream_t stream, arts_parameter_t param) {
+ struct _libroarartsc_stream * s = (struct _libroarartsc_stream *) stream;
+ if ( !stream )
+  return -1;
+
+ if ( param == ARTS_P_PACKET_SIZE ) {
+  return 2048;
+ } else if ( param == ARTS_P_PACKET_COUNT ) {
+  return 1;
+ } else if ( param == ARTS_P_BLOCKING ) {
+  return s->blocking;
+ }
+
+ return -1;
+}
+
 //ll