static int dash_live_onflv(void* param, int codec, const void* data, size_t bytes, uint32_t pts, uint32_t dts, int flags)
{
struct mpeg4_aac_t aac;
struct mpeg4_avc_t avc;
struct mpeg4_hevc_t hevc;
dash_playlist_t* dash = (dash_playlist_t*)param;
switch (codec)
{
case FLV_VIDEO_AVCC:
if (-1 == dash->adapation_video && mpeg4_avc_decoder_configuration_record_load((const uint8_t*)data, bytes, &avc) > 0)
dash->adapation_video = dash_mpd_add_video_adaptation_set(dash->mpd, dash->name.c_str(), MOV_OBJECT_H264, dash->width, dash->height, data, bytes);
break;
case FLV_VIDEO_HVCC:
if (-1 == dash->adapation_video && mpeg4_hevc_decoder_configuration_record_load((const uint8_t*)data, bytes, &hevc) > 0)
dash->adapation_video = dash_mpd_add_video_adaptation_set(dash->mpd, dash->name.c_str(), MOV_OBJECT_HEVC, dash->width, dash->height, data, bytes);
break;
case FLV_AUDIO_ASC:
if (-1 == dash->adapation_audio && mpeg4_aac_audio_specific_config_load((const uint8_t*)data, bytes, &aac) > 0)
{
int rate = mpeg4_aac_audio_frequency_to((enum mpeg4_aac_frequency)aac.sampling_frequency_index);
dash->adapation_audio = dash_mpd_add_audio_adaptation_set(dash->mpd, dash->name.c_str(), MOV_OBJECT_AAC, aac.channel_configuration, 32, rate, data, bytes);
}
break;
case FLV_AUDIO_AAC:
return dash_mpd_input(dash->mpd, dash->adapation_audio, data, bytes, pts, dts, 0);
case FLV_VIDEO_H264:
return dash_mpd_input(dash->mpd, dash->adapation_video, data, bytes, pts, dts, flags ? MOV_AV_FLAG_KEYFREAME : 0);
case FLV_VIDEO_H265:
return dash_mpd_input(dash->mpd, dash->adapation_video, data, bytes, pts, dts, flags ? MOV_AV_FLAG_KEYFREAME : 0);
default:
assert(0);
}
return 0;
}
void MP4FileSource::MP4OnAudio(void* param, uint32_t track, uint8_t object, int channel_count, int /*bit_per_sample*/, int sample_rate, const void* extra, size_t bytes)
{
int n = 0;
MP4FileSource* self = (MP4FileSource*)param;
struct media_t* m = &self->m_media[self->m_count++];
m->track = track;
m->rtcp_clock = 0;
m->ssrc = (uint32_t)rtp_ssrc();
m->timestamp = m->ssrc;
m->bandwidth = 128 * 1024;
m->dts_first = -1;
m->dts_last = -1;
if (MOV_OBJECT_AAC == object)
{
struct mpeg4_aac_t aac;
//aac.profile = MPEG4_AAC_LC;
//aac.channel_configuration = (uint8_t)channel_count;
//aac.sampling_frequency_index = (uint8_t)mpeg4_aac_audio_frequency_from(sample_rate);
mpeg4_aac_audio_specific_config_load((const uint8_t*)extra, bytes, &aac);
assert(aac.sampling_frequency_index == (uint8_t)mpeg4_aac_audio_frequency_from(sample_rate));
assert(aac.channel_configuration == channel_count);
if (1)
{
// RFC 6416
// In the presence of SBR, the sampling rates for the core encoder/
// decoder and the SBR tool are different in most cases. Therefore,
// this parameter SHALL NOT be considered as the definitive sampling rate.
static const char* pattern =
"m=audio 0 RTP/AVP %d\n"
"a=rtpmap:%d MP4A-LATM/%d/%d\n"
"a=fmtp:%d profile-level-id=%d;object=%d;cpresent=0;config=";
sample_rate = 90000;
n = snprintf((char*)self->m_frame.buffer, sizeof(self->m_frame.buffer), pattern,
RTP_PAYLOAD_MP4A, RTP_PAYLOAD_MP4A, sample_rate, channel_count,
RTP_PAYLOAD_MP4A, mpeg4_aac_profile_level(&aac), aac.profile);
uint8_t config[6];
int r = mpeg4_aac_stream_mux_config_save(&aac, config, sizeof(config));
static const char* hex = "0123456789abcdef";
for (int i = 0; i < r; i++)
{
self->m_frame.buffer[n++] = hex[config[i] >> 4];
self->m_frame.buffer[n++] = hex[config[i] & 0x0F];
}
self->m_frame.buffer[n] = '\0';
snprintf(m->name, sizeof(m->name), "%s", "MP4A-LATM");
}
else
{
// RFC 3640 3.3.1. General (p21)
// a=rtpmap:<payload type> <encoding name>/<clock rate>[/<encoding parameters > ]
// For audio streams, <encoding parameters> specifies the number of audio channels
// streamType: AudioStream
// When using SDP, the clock rate of the RTP time stamp MUST be expressed using the "rtpmap" attribute.
// If an MPEG-4 audio stream is transported, the rate SHOULD be set to the same value as the sampling rate of the audio stream.
// If an MPEG-4 video stream transported, it is RECOMMENDED that the rate be set to 90 kHz.
static const char* pattern =
"m=audio 0 RTP/AVP %d\n"
"a=rtpmap:%d MPEG4-GENERIC/%d/%d\n"
"a=fmtp:%d streamType=5;profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=";
n = snprintf((char*)self->m_frame.buffer, sizeof(self->m_frame.buffer), pattern,
RTP_PAYLOAD_MP4A, RTP_PAYLOAD_MP4A, sample_rate, channel_count, RTP_PAYLOAD_MP4A);
// For MPEG-4 Audio streams, config is the audio object type specific
// decoder configuration data AudioSpecificConfig()
n += base64_encode((char*)self->m_frame.buffer + n, extra, bytes);
self->m_frame.buffer[n] = '\0';
snprintf(m->name, sizeof(m->name), "%s", "MPEG4-GENERIC");
}
m->frequency = sample_rate;
m->payload = RTP_PAYLOAD_MP4A;
self->m_frame.buffer[n++] = '\n';
}
