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core: Add H.265/HEVC passthrough support 

This change adds H.265/HEVC as a known codec and creates a cached
"h265" media format for use.

Note that RFC 7798 section 7.2 also describes additional SDP
parameters. Handling of these is not yet supported.

ASTERISK-28512

Change-Id: I26d262cc4110b4f7e99348a3ddc53bad0d2cd1f2
This commit is contained in:
Florian Floimair 2019-08-22 14:44:07 +02:00
parent 23882ddb3e
commit f85631cf82
6 changed files with 30 additions and 0 deletions
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1
channels/chan_pjsip.c
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@ -1654,6 +1654,7 @@ static int chan_pjsip_indicate(struct ast_channel *ast, int condition, const voi
if (ast_format_cap_iscompatible_format(ast_channel_nativeformats(ast), ast_format_vp8) != AST_FORMAT_CMP_NOT_EQUAL ||
ast_format_cap_iscompatible_format(ast_channel_nativeformats(ast), ast_format_vp9) != AST_FORMAT_CMP_NOT_EQUAL ||
ast_format_cap_iscompatible_format(ast_channel_nativeformats(ast), ast_format_h265) != AST_FORMAT_CMP_NOT_EQUAL ||
(channel->session->endpoint->media.webrtc &&
ast_format_cap_iscompatible_format(ast_channel_nativeformats(ast), ast_format_h264) != AST_FORMAT_CMP_NOT_EQUAL)) {
/* FIXME Fake RTP write, this will be sent as an RTCP packet. Ideally the

6
doc/CHANGES-staging/h265-passthrough.txt Normal file
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@ -0,0 +1,6 @@
Subject: Core
H.265/HEVC is now a supported video codec and it can be used by
specifying "h265" in the allow line.
Please note however, that handling of the additional SDP parameters
described in RFC 7798 section 7.2 is not yet supported.

5
include/asterisk/format_cache.h
View File

@ -173,6 +173,11 @@ extern struct ast_format *ast_format_h263p;
*/
extern struct ast_format *ast_format_h264;
/*!
* \brief Built-in cached h265 format.
*/
extern struct ast_format *ast_format_h265;
/*!
* \brief Built-in cached mp4 format.
*/

8
main/codec_builtin.c
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@ -806,6 +806,13 @@ static struct ast_codec h264 = {
.sample_rate = 1000,
};
static struct ast_codec h265 = {
.name = "h265",
.description = "H.265 video",
.type = AST_MEDIA_TYPE_VIDEO,
.sample_rate = 1000,
};
static struct ast_codec mpeg4 = {
.name = "mpeg4",
.description = "MPEG4 video",
@ -971,6 +978,7 @@ int ast_codec_builtin_init(void)
res |= CODEC_REGISTER_AND_CACHE(h263);
res |= CODEC_REGISTER_AND_CACHE(h263p);
res |= CODEC_REGISTER_AND_CACHE(h264);
res |= CODEC_REGISTER_AND_CACHE(h265);
res |= CODEC_REGISTER_AND_CACHE(mpeg4);
res |= CODEC_REGISTER_AND_CACHE(vp8);
res |= CODEC_REGISTER_AND_CACHE(vp9);

8
main/format_cache.c
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@ -180,6 +180,11 @@ struct ast_format *ast_format_h263p;
*/
struct ast_format *ast_format_h264;
/*!
* \brief Built-in cached h265 format.
*/
struct ast_format *ast_format_h265;
/*!
* \brief Built-in cached mp4 format.
*/
@ -348,6 +353,7 @@ static void format_cache_shutdown(void)
ao2_replace(ast_format_h263, NULL);
ao2_replace(ast_format_h263p, NULL);
ao2_replace(ast_format_h264, NULL);
ao2_replace(ast_format_h265, NULL);
ao2_replace(ast_format_mp4, NULL);
ao2_replace(ast_format_vp8, NULL);
ao2_replace(ast_format_vp9, NULL);
@ -446,6 +452,8 @@ static void set_cached_format(const char *name, struct ast_format *format)
ao2_replace(ast_format_h263p, format);
} else if (!strcmp(name, "h264")) {
ao2_replace(ast_format_h264, format);
} else if (!strcmp(name, "h265")) {
ao2_replace(ast_format_h265, format);
} else if (!strcmp(name, "mpeg4")) {
ao2_replace(ast_format_mp4, format);
} else if (!strcmp(name, "vp8")) {

2
main/rtp_engine.c
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@ -3604,6 +3604,7 @@ int ast_rtp_engine_init(void)
set_next_mime_type(ast_format_h263, 0, "video", "H263", 90000);
set_next_mime_type(ast_format_h263p, 0, "video", "h263-1998", 90000);
set_next_mime_type(ast_format_h264, 0, "video", "H264", 90000);
set_next_mime_type(ast_format_h265, 0, "video", "H265", 90000);
set_next_mime_type(ast_format_mp4, 0, "video", "MP4V-ES", 90000);
set_next_mime_type(ast_format_t140_red, 0, "text", "RED", 1000);
set_next_mime_type(ast_format_t140, 0, "text", "T140", 1000);
@ -3655,6 +3656,7 @@ int ast_rtp_engine_init(void)
add_static_payload(106, ast_format_t140, 0); /* Real time text chat */
add_static_payload(107, ast_format_opus, 0);
add_static_payload(108, ast_format_vp9, 0);
add_static_payload(109, ast_format_h265, 0);
add_static_payload(110, ast_format_speex, 0);
add_static_payload(111, ast_format_g726, 0);