From a0f451c35ed56b08353c4c3150bf847867f74fe7 Mon Sep 17 00:00:00 2001 From: Matt Jordan Date: Sun, 9 Aug 2015 17:56:48 -0500 Subject: main/format: Add an API call for retrieving format attributes Some codecs that may be a third party library to Asterisk need to have knowledge of the format attributes that were negotiated. Unfortunately, when the great format migration of Asterisk 13 occurred, that ability was lost. This patch adds an API call, ast_format_attribute_get, to the core format API, along with updates to the unit test to check the new API call. A new callback is also now available for format attribute modules, such that they can provide the format attribute values they manage. Note that the API returns a void *. This is done as the format attribute modules themselves may store format attributes in any particular manner they like. Care should be taken by consumers of the API to check the return value before casting and dereferencing. Consumers will obviously need to have a priori knowledge of the type of the format attribute as well. Change-Id: Ieec76883dfb46ecd7aff3dc81a52c81f4dc1b9e3 --- main/format.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'main') diff --git a/main/format.c b/main/format.c index 148c77f8d..8ac82f0ed 100644 --- a/main/format.c +++ b/main/format.c @@ -298,6 +298,17 @@ struct ast_format *ast_format_attribute_set(const struct ast_format *format, con return interface->format_attribute_set(format, name, value); } +const void *ast_format_attribute_get(const struct ast_format *format, const char *name) +{ + const struct ast_format_interface *interface = format->interface; + + if (!interface || !interface->format_attribute_get) { + return NULL; + } + + return interface->format_attribute_get(format, name); +} + struct ast_format *ast_format_parse_sdp_fmtp(const struct ast_format *format, const char *attributes) { const struct ast_format_interface *interface = format->interface; -- cgit v1.2.3