Changeset 2298:159cae76ee09 in roaraudio

Timestamp:

08/05/09 04:54:49 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

wrote basic init and uninit and a bit of roar_xcoder_speex_packet_size()

File:

• libroardsp/transcode_speex.c (modified) (1 diff)

libroardsp/transcode_speex.c

@@ -31 +31 @@
 
 int roar_xcoder_speex_init       (struct roar_xcoder * state) {
- return -1;
+ struct roar_xcoder_speex * self = malloc(sizeof(struct roar_xcoder_speex));
+ struct roar_audio_info  * info = &(state->info.pcm);
+ int tmp;
+
+ if ( self == NULL )
+  return -1;
+
+ // curruntly only 16 bit mode is supported
+ if ( info->bits != 16 ) {
+  free(self);
+  return -1;
+ }
+
+ // curruntly only mono mode is supported
+ if ( info->channels != 1 ) {
+  free(self);
+  return -1;
+ }
+
+ memset(self, 0, sizeof(struct roar_xcoder_speex));
+
+ state->inst = self;
+
+ self->mode  = ROAR_SPEEX_MODE_UWB;
+
+ if (state->encode) {
+  switch (self->mode) {
+   case ROAR_SPEEX_MODE_NB:  self->xcoder = speex_encoder_init(&speex_nb_mode);  break;
+   case ROAR_SPEEX_MODE_WB:  self->xcoder = speex_encoder_init(&speex_wb_mode);  break;
+   case ROAR_SPEEX_MODE_UWB: self->xcoder = speex_encoder_init(&speex_uwb_mode); break;
+  }
+  tmp = 8;
+  speex_encoder_ctl(self->xcoder, SPEEX_SET_QUALITY,    &tmp);
+  speex_encoder_ctl(self->xcoder, SPEEX_GET_FRAME_SIZE, &(self->frame_size));
+ } else {
+  self->xcoder = NULL;
+ }
+
+ speex_bits_init(&(self->bits));
+
+ return 0;
 }
 
 int roar_xcoder_speex_uninit     (struct roar_xcoder * state) {
- return -1;
+ struct roar_xcoder_speex * self = state->inst;
+
+ if ( self->xcoder != NULL ) {
+  if (state->encode) {
+   speex_encoder_destroy(self->xcoder);
+  } else {
+   speex_decoder_destroy(self->xcoder);
+  }
+ }
+
+ speex_bits_destroy(&(self->bits));
+
+ free(self);
+
+ return 0;
 }
 
 int roar_xcoder_speex_packet_size(struct roar_xcoder * state, int samples) {
- return -1;
+ struct roar_xcoder_speex * self = state->inst;
+ if (!state->encode) {
+  return -1;
+ }
+
+ return _16BIT * self->frame_size;
 }