RTP: Add support for SBC codec in RTP Player

Add optional dependancy to libsbc to play Bluetooth SBC in
A2DP payload. Also simplify RTP Player and extent codec interface.

Change-Id: I52e1fce9c82e2885736354fe73c6c37168a4fda3
Reviewed-on: https://code.wireshark.org/review/19
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
Reviewed-by: Evan Huus <eapache@gmail.com>

2 files changed, 57 insertions, 8 deletions

diff --git a/codecs/G726/G726decode.c b/codecs/G726/G726decode.c
index bcc2cd1fdc..7961364d41 100644
--- a/codecs/G726/G726decode.c
+++ b/codecs/G726/G726decode.c
@@ -37,21 +37,56 @@
 static g726_state_t state;
 
 /* Currently, only G.726-32, linear encoding, left packed is supported */
-void initG726_32(void)
+void *
+codec_g726_init(void)
 {
     memset (&state, 0, sizeof (state));
     g726_init(&state, 32000, 0, 1);
+
+    return NULL;
+}
+
+void
+codec_g726_release(void *ctx _U_)
+{
+
+}
+
+int
+codec_g726_get_channels(void *ctx _U_)
+{
+    return 1;
+}
+
+int
+codec_g726_get_frequency(void *ctx _U_)
+{
+    return 32000;
 }
 
 /* Packing should be user defined (via the decode dialog) since due to historical reasons two diverging
  * de facto standards are in use today (see RFC3551).
  */
 int
-decodeG726_32(void *input, int inputSizeBytes,
-              void *output, int *outputSizeBytes)
+codec_g726_decode(void *ctx _U_, const void *input, int inputSizeBytes, void *output,
+        int *outputSizeBytes)
 {
     *outputSizeBytes = 2 * g726_decode(&state, output, (void*) input, inputSizeBytes);
     return 0;
 }
 
 #endif
+
+/*
+ * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */
+
diff --git a/codecs/G726/G726decode.h b/codecs/G726/G726decode.h
index 3858ae33b1..a61ec9b237 100644
--- a/codecs/G726/G726decode.h
+++ b/codecs/G726/G726decode.h
@@ -25,10 +25,24 @@
 #ifndef __CODECS_G726DECODE_H__
 #define __CODECS_G726DECODE_H__
 
-void
-initG726_32(void);
-
-int
-decodeG726_32(void *input, int inputSizeBytes, void *output, int *outputSizeBytes);
+void *codec_g726_init(void);
+void  codec_g726_release(void *ctx);
+int   codec_g726_get_channels(void *ctx);
+int   codec_g726_get_frequency(void *ctx);
+int   codec_g726_decode(void *ctx, const void *input, int inputSizeBytes, void *output,
+        int *outputSizeBytes);
 
 #endif /* G726decode.h */
+
+/*
+ * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */