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refine hls, extract the flv/aac sample rates

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This commit is contained in:
winlin 2014-07-06 17:32:48 +08:00
parent e5e2729967
commit 96e0273e99
4 changed files with 42 additions and 23 deletions
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30
trunk/src/app/srs_app_hls.cpp
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@ -76,6 +76,22 @@ using namespace std;
// in ms, for HLS aac flush the audio
#define SRS_CONF_DEFAULT_AAC_DELAY 100
// 0 = 5.5 kHz = 5512 Hz
// 1 = 11 kHz = 11025 Hz
// 2 = 22 kHz = 22050 Hz
// 3 = 44 kHz = 44100 Hz
int flv_sample_rates[] = {5512, 11025, 22050, 44100};
// the sample rates in the codec,
// in the sequence header.
int aac_sample_rates[] =
{
96000, 88200, 64000, 48000,
44100, 32000, 24000, 22050,
16000, 12000, 11025, 8000,
7350, 0, 0, 0
};
// @see: ngx_rtmp_mpegts_header
u_int8_t mpegts_header[] = {
/* TS */
@ -377,21 +393,11 @@ SrsHlsAacJitter::~SrsHlsAacJitter()
int64_t SrsHlsAacJitter::on_buffer_start(int64_t flv_pts, int sample_rate, int aac_sample_rate)
{
// 0 = 5.5 kHz = 5512 Hz
// 1 = 11 kHz = 11025 Hz
// 2 = 22 kHz = 22050 Hz
// 3 = 44 kHz = 44100 Hz
static int flv_sample_rates[] = {5512, 11025, 22050, 44100};
// use sample rate in flv/RTMP.
int flv_sample_rate = flv_sample_rates[sample_rate & 0x03];
// reset the sample rate by sequence header
// override the sample rate by sequence header
if (aac_sample_rate != _SRS_AAC_SAMPLE_RATE_UNSET) {
static int aac_sample_rates[] = {
96000, 88200, 64000, 48000,
44100, 32000, 24000, 22050,
16000, 12000, 11025, 8000,
7350, 0, 0, 0
};
flv_sample_rate = aac_sample_rates[aac_sample_rate];
}