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lavf/sdp: add const qualifiers where appropriate

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Declares that these structs are read-only for this code.
This commit is contained in:
Anton Khirnov
2021-12-04 17:47:41 +01:00
parent 3c9778d342
commit 230646751d
4 changed files with 17 additions and 16 deletions
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2
libavformat/internal.h
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@@ -557,7 +557,7 @@ uint64_t ff_parse_ntp_time(uint64_t ntp_ts);
* @param fmt the AVFormatContext, which might contain options modifying
* the generated SDP
*/
void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
void ff_sdp_write_media(char *buff, int size, const AVStream *st, int idx,
const char *dest_addr, const char *dest_type,
int port, int ttl, AVFormatContext *fmt);

4
libavformat/rtp.c
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@@ -87,8 +87,8 @@ int ff_rtp_get_codec_info(AVCodecParameters *par, int payload_type)
return -1;
}
int ff_rtp_get_payload_type(AVFormatContext *fmt,
AVCodecParameters *par, int idx)
int ff_rtp_get_payload_type(const AVFormatContext *fmt,
const AVCodecParameters *par, int idx)
{
int i;
const AVOutputFormat *ofmt = fmt ? fmt->oformat : NULL;

4
libavformat/rtp.h
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@@ -38,8 +38,8 @@
* @param idx The stream index
* @return The payload type (the 'PT' field in the RTP header).
*/
int ff_rtp_get_payload_type(AVFormatContext *fmt, AVCodecParameters *par,
int idx);
int ff_rtp_get_payload_type(const AVFormatContext *fmt,
const AVCodecParameters *par, int idx);
/**
* Initialize a codec context based on the payload type.

23
libavformat/sdp.c
View File

@@ -151,7 +151,7 @@ static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url)
}
#define MAX_PSET_SIZE 1024
static char *extradata2psets(AVFormatContext *s, AVCodecParameters *par)
static char *extradata2psets(AVFormatContext *s, const AVCodecParameters *par)
{
char *psets, *p;
const uint8_t *r;
@@ -222,7 +222,7 @@ static char *extradata2psets(AVFormatContext *s, AVCodecParameters *par)
return psets;
}
static char *extradata2psets_hevc(AVCodecParameters *par)
static char *extradata2psets_hevc(const AVCodecParameters *par)
{
char *psets;
uint8_t *extradata = par->extradata;
@@ -323,7 +323,7 @@ err:
return NULL;
}
static char *extradata2config(AVFormatContext *s, AVCodecParameters *par)
static char *extradata2config(AVFormatContext *s, const AVCodecParameters *par)
{
char *config;
@@ -343,7 +343,7 @@ static char *extradata2config(AVFormatContext *s, AVCodecParameters *par)
return config;
}
static char *xiph_extradata2config(AVFormatContext *s, AVCodecParameters *par)
static char *xiph_extradata2config(AVFormatContext *s, const AVCodecParameters *par)
{
uint8_t *config;
char *encoded_config;
@@ -413,7 +413,7 @@ xiph_fail:
return NULL;
}
static int latm_context2profilelevel(AVCodecParameters *par)
static int latm_context2profilelevel(const AVCodecParameters *par)
{
/* MP4A-LATM
* The RTP payload format specification is described in RFC 3016
@@ -442,7 +442,7 @@ static int latm_context2profilelevel(AVCodecParameters *par)
return profile_level;
}
static char *latm_context2config(AVFormatContext *s, AVCodecParameters *par)
static char *latm_context2config(AVFormatContext *s, const AVCodecParameters *par)
{
/* MP4A-LATM
* The RTP payload format specification is described in RFC 3016
@@ -477,10 +477,11 @@ static char *latm_context2config(AVFormatContext *s, AVCodecParameters *par)
return config;
}
static char *sdp_write_media_attributes(char *buff, int size, AVStream *st, int payload_type, AVFormatContext *fmt)
static char *sdp_write_media_attributes(char *buff, int size, const AVStream *st,
int payload_type, AVFormatContext *fmt)
{
char *config = NULL;
AVCodecParameters *p = st->codecpar;
const AVCodecParameters *p = st->codecpar;
switch (p->codec_id) {
case AV_CODEC_ID_DIRAC:
@@ -762,11 +763,11 @@ static char *sdp_write_media_attributes(char *buff, int size, AVStream *st, int
return buff;
}
void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
void ff_sdp_write_media(char *buff, int size, const AVStream *st, int idx,
const char *dest_addr, const char *dest_type,
int port, int ttl, AVFormatContext *fmt)
{
AVCodecParameters *p = st->codecpar;
const AVCodecParameters *p = st->codecpar;
const char *type;
int payload_type;
@@ -863,7 +864,7 @@ int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
return AVERROR(ENOSYS);
}
void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
void ff_sdp_write_media(char *buff, int size, const AVStream *st, int idx,
const char *dest_addr, const char *dest_type,
int port, int ttl, AVFormatContext *fmt)
{