Media Project Phase2: SILK 8khz-24khz, SLINEAR 8khz-192khz, SPEEX 32khz, hd audio ConfBridge, and other stuff

-Functional changes
1. Dynamic global format list build by codecs defined in codecs.conf
2. SILK 8khz, 12khz, 16khz, and 24khz with custom attributes defined in codecs.conf
3. Negotiation of SILK attributes in chan_sip.
4. SPEEX 32khz with translation
5. SLINEAR 8khz, 12khz, 24khz, 32khz, 44.1khz, 48khz, 96khz, 192khz with translation
   using codec_resample.c
6. Various changes to RTP code required to properly handle the dynamic format list
   and formats with attributes.
7. ConfBridge now dynamically jumps to the best possible sample rate.  This allows
   for conferences to take advantage of HD audio (Which sounds awesome)
8. Audiohooks are no longer limited to 8khz audio, and most effects have been
   updated to take advantage of this such as Volume, DENOISE, PITCH_SHIFT.
9. codec_resample now uses its own code rather than depending on libresample.

-Organizational changes
Global format list is moved from frame.c to format.c
Various format specific functions moved from frame.c to format.c

Review: https://reviewboard.asterisk.org/r/1104/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@308582 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 8 insertions, 2 deletions

diff --git a/include/asterisk/translate.h b/include/asterisk/translate.h
index 7e73cd1b1..8545f0ae5 100644
--- a/include/asterisk/translate.h
+++ b/include/asterisk/translate.h
@@ -133,7 +133,7 @@ enum ast_trans_cost_table {
  * Generic plc is only available for dstfmt = SLINEAR
  */
 struct ast_translator {
-	const char name[80];                   /*!< Name of translator */
+	char name[80];                         /*!< Name of translator */
 	struct ast_format src_format;          /*!< Source format */
 	struct ast_format dst_format;          /*!< Destination format */
 
@@ -204,6 +204,12 @@ struct ast_translator {
 struct ast_trans_pvt {
 	struct ast_translator *t;
 	struct ast_frame f;         /*!< used in frameout */
+	/*! If a translation path using a format with attributes requires the output
+	 * to be a specific set of attributes, this variable will be set describing those
+	 * attributes to the translator.  Otherwise, the translator must choose a set
+	 * of format attributes for the destination that preserves the quality of the
+	 * audio in the best way possible. */
+	struct ast_format explicit_dst;
 	int samples;                /*!< samples available in outbuf */
 	/*! \brief actual space used in outbuf */
 	int datalen;
@@ -213,7 +219,7 @@ struct ast_trans_pvt {
 		unsigned char *uc;      /*!< the useful portion of the buffer */
 		int16_t *i16;
 		uint8_t *ui8;
-	} outbuf; 
+	} outbuf;
 	plc_state_t *plc;           /*!< optional plc pointer */
 	struct ast_trans_pvt *next; /*!< next in translator chain */
 	struct timeval nextin;