gint sdp_get_codec_pt(const gchar * sdp, idilia_codec codec)
{
gint pt = -1;
const gchar * codec_str = get_codec_name(codec);
gchar * expr_str = g_strdup_printf("a=rtpmap:[0-9]+[ \t]+%s/", codec_str);
GRegex *regex = g_regex_new(expr_str, 0, 0, NULL);
g_free(expr_str);
if (regex != NULL) {
GMatchInfo *matchInfo;
g_regex_match(regex, sdp, 0, &matchInfo);
if (g_match_info_matches(matchInfo)) {
gchar *result = g_match_info_fetch(matchInfo, 0);
if (result) {
gchar * sscanf_str = g_strdup_printf("a=rtpmap:%%d%%*[ \t]%s/", codec_str);
sscanf(result, sscanf_str, &pt);
g_free(sscanf_str);
g_free(result);
}
}
g_regex_unref(regex);
}
return pt;
}
static char*
get_locale_encoding(void)
{
#ifdef MS_WINDOWS
char codepage[100];
PyOS_snprintf(codepage, sizeof(codepage), "cp%d", GetACP());
return get_codec_name(codepage);
#elif defined(HAVE_LANGINFO_H) && defined(CODESET)
char* codeset = nl_langinfo(CODESET);
if (!codeset || codeset[0] == '\0') {
PyErr_SetString(PyExc_ValueError, "CODESET is not set or empty");
return NULL;
}
return get_codec_name(codeset);
#else
PyErr_SetNone(PyExc_NotImplementedError);
return NULL;
#endif
}
static gchar * janus_source_do_codec_negotiation(janus_source_session * session, gchar * orig_sdp)
{
gchar * sdp = NULL;
idilia_codec preferred_codec = janus_source_select_video_codec_by_priority_list(orig_sdp);
sdp = sdp_set_video_codec(orig_sdp, preferred_codec);
g_free(orig_sdp);
for (int stream = 0; stream < JANUS_SOURCE_STREAM_MAX; stream++)
{
if (stream == JANUS_SOURCE_STREAM_VIDEO) {
session->codec[stream] = sdp_get_video_codec(sdp);
}
else if (stream == JANUS_SOURCE_STREAM_AUDIO) {
session->codec[stream] = sdp_get_audio_codec(sdp);
}
session->codec_pt[stream] = sdp_get_codec_pt(sdp, session->codec[stream]);
JANUS_LOG(LOG_INFO, "Codec used: %s\n", get_codec_name(session->codec[stream]));
}
return sdp;
}
std::string lavf_get_stream_description(AVStream *pStream)
{
AVCodecContext *enc = pStream->codec;
std::string codec_name = get_codec_name(enc);
const char *lang = get_stream_language(pStream);
std::string sLanguage;
if(lang) {
sLanguage = ProbeLangForLanguage(lang);
if (sLanguage.empty()) {
sLanguage = lang;
}
}
char *title = nullptr;
if (AVDictionaryEntry *dictEntry = av_dict_get(pStream->metadata, "title", nullptr, 0)) {
title = dictEntry->value;
} else if (AVDictionaryEntry *dictEntry = av_dict_get(pStream->metadata, "handler_name", nullptr, 0)) {
title = dictEntry->value;
if (strcmp(title, "GPAC ISO Video Handler") == 0 || strcmp(title, "VideoHandler") == 0|| strcmp(title, "GPAC ISO Audio Handler") == 0 || strcmp(title, "GPAC Streaming Text Handler") == 0)
title = nullptr;
}
// Empty titles are rather useless
if (title && strlen(title) == 0)
title = nullptr;
int bitrate = get_bit_rate(enc);
std::ostringstream buf;
switch(enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
buf << "V: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
// Pixel Format
if (enc->pix_fmt != AV_PIX_FMT_NONE) {
buf << ", " << av_get_pix_fmt_name(enc->pix_fmt);
}
// Dimensions
if (enc->width) {
buf << ", " << enc->width << "x" << enc->height;
}
// Bitrate
if (bitrate > 0) {
buf << ", " << (bitrate / 1000) << " kb/s";
}
// Closing tag
if (title || lang) {
buf << ")";
}
buf << format_flags(pStream->disposition);
break;
case AVMEDIA_TYPE_AUDIO:
buf << "A: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
// Sample Rate
if (enc->sample_rate) {
buf << ", " << enc->sample_rate << " Hz";
}
if (enc->channels) {
// Get channel layout
char channel[32];
av_get_channel_layout_string(channel, 32, enc->channels, enc->channel_layout);
buf << ", " << channel;
}
// Sample Format
if (show_sample_fmt(enc->codec_id) && get_bits_per_sample(enc, true)) {
if (enc->sample_fmt == AV_SAMPLE_FMT_FLT || enc->sample_fmt == AV_SAMPLE_FMT_DBL) {
buf << ", fp";
} else {
buf << ", s";
}
buf << get_bits_per_sample(enc, true);
}
// Bitrate
if (bitrate > 0) {
buf << ", " << (bitrate / 1000) << " kb/s";
}
// Closing tag
if (title || lang) {
buf << ")";
}
// Flags
buf << format_flags(pStream->disposition);
break;
case AVMEDIA_TYPE_SUBTITLE:
buf << "S: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
if (title || lang) {
buf << ")";
}
// Subtitle flags
buf << format_flags(pStream->disposition);
break;
default:
buf << "Unknown: Stream #" << pStream->index;
break;
}
return buf.str();
}
std::string lavf_get_stream_description(const AVStream *pStream)
{
AVCodecParameters *par = pStream->codecpar;
std::string codec_name = get_codec_name(par);
const char *lang = get_stream_language(pStream);
std::string sLanguage;
if(lang) {
sLanguage = ProbeLangForLanguage(lang);
if (sLanguage.empty()) {
sLanguage = lang;
}
}
const char * title = lavf_get_stream_title(pStream);
// Empty titles are rather useless
if (title && strlen(title) == 0)
title = nullptr;
int64_t bitrate = get_bit_rate(par);
std::ostringstream buf;
switch(par->codec_type) {
case AVMEDIA_TYPE_VIDEO:
buf << "V: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
// Pixel Format
if (const char *pix_fmt = av_get_pix_fmt_name((AVPixelFormat)par->format)) {
buf << ", " << pix_fmt;
}
// Dimensions
if (par->width) {
buf << ", " << par->width << "x" << par->height;
}
// Bitrate
if (bitrate > 0) {
buf << ", " << (bitrate / 1000) << " kb/s";
}
if (par->codec_id == AV_CODEC_ID_H264 && par->profile == FF_PROFILE_H264_STEREO_HIGH) {
AVDictionaryEntry *entry = av_dict_get(pStream->metadata, "stereo_mode", nullptr, 0);
if (entry && strcmp(entry->value, "mvc_lr") == 0)
buf << ", lr";
else if (entry && strcmp(entry->value, "mvc_rl") == 0)
buf << ", rl";
}
// Closing tag
if (title || lang) {
buf << ")";
}
buf << format_flags(pStream->disposition);
break;
case AVMEDIA_TYPE_AUDIO:
buf << "A: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
// Sample Rate
if (par->sample_rate) {
buf << ", " << par->sample_rate << " Hz";
}
if (par->channels) {
// Get channel layout
char channel[32];
av_get_channel_layout_string(channel, 32, par->channels, par->channel_layout);
buf << ", " << channel;
}
// Sample Format
if (show_sample_fmt(par) && get_bits_per_sample(par, true)) {
if (par->format == AV_SAMPLE_FMT_FLT || par->format == AV_SAMPLE_FMT_DBL) {
buf << ", fp";
} else {
buf << ", s";
}
buf << get_bits_per_sample(par, true);
}
// Bitrate
if (bitrate > 0) {
buf << ", " << (bitrate / 1000) << " kb/s";
}
// Closing tag
if (title || lang) {
buf << ")";
}
// Flags
buf << format_flags(pStream->disposition);
break;
case AVMEDIA_TYPE_SUBTITLE:
buf << "S: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
if (title || lang) {
buf << ")";
}
// Subtitle flags
buf << format_flags(pStream->disposition);
break;
default:
buf << "Unknown: Stream #" << pStream->index;
break;
}
return buf.str();
}
