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omxaacenc: Generate and set codec_data on the caps for raw AAC

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Dake Gu 2011-12-09 10:21:47 +01:00 committed by Sebastian Dröge
parent 247e410df0
commit b8b64ac746
1 changed files with 88 additions and 0 deletions
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88
omx/gstomxaacenc.c
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@ -338,6 +338,77 @@ gst_omx_aac_enc_set_format (GstOMXAudioEnc * enc, GstOMXPort * port,
return TRUE;
}
typedef enum adts_sample_index__
{
ADTS_SAMPLE_INDEX_96000 = 0x0,
ADTS_SAMPLE_INDEX_88200,
ADTS_SAMPLE_INDEX_64000,
ADTS_SAMPLE_INDEX_48000,
ADTS_SAMPLE_INDEX_44100,
ADTS_SAMPLE_INDEX_32000,
ADTS_SAMPLE_INDEX_24000,
ADTS_SAMPLE_INDEX_22050,
ADTS_SAMPLE_INDEX_16000,
ADTS_SAMPLE_INDEX_12000,
ADTS_SAMPLE_INDEX_11025,
ADTS_SAMPLE_INDEX_8000,
ADTS_SAMPLE_INDEX_7350,
ADTS_SAMPLE_INDEX_MAX
} adts_sample_index;
static adts_sample_index
map_adts_sample_index (guint32 srate)
{
adts_sample_index ret;
switch (srate) {
case 96000:
ret = ADTS_SAMPLE_INDEX_96000;
break;
case 88200:
ret = ADTS_SAMPLE_INDEX_88200;
break;
case 64000:
ret = ADTS_SAMPLE_INDEX_64000;
break;
case 48000:
ret = ADTS_SAMPLE_INDEX_48000;
break;
case 44100:
ret = ADTS_SAMPLE_INDEX_44100;
break;
case 32000:
ret = ADTS_SAMPLE_INDEX_32000;
break;
case 24000:
ret = ADTS_SAMPLE_INDEX_24000;
break;
case 22050:
ret = ADTS_SAMPLE_INDEX_22050;
break;
case 16000:
ret = ADTS_SAMPLE_INDEX_16000;
break;
case 12000:
ret = ADTS_SAMPLE_INDEX_12000;
break;
case 11025:
ret = ADTS_SAMPLE_INDEX_11025;
break;
case 8000:
ret = ADTS_SAMPLE_INDEX_8000;
break;
case 7350:
ret = ADTS_SAMPLE_INDEX_7350;
break;
default:
ret = ADTS_SAMPLE_INDEX_44100;
break;
}
return ret;
}
static GstCaps *
gst_omx_aac_enc_get_caps (GstOMXAudioEnc * enc, GstOMXPort * port,
GstAudioInfo * info)
@ -432,7 +503,24 @@ gst_omx_aac_enc_get_caps (GstOMXAudioEnc * enc, GstOMXPort * port,
gst_caps_set_simple (caps, "rate", G_TYPE_INT, aac_profile.nSampleRate,
NULL);
if (aac_profile.eAACStreamFormat == OMX_AUDIO_AACStreamFormatRAW) {
GstBuffer *codec_data;
guint8 *cdata;
adts_sample_index sr_idx;
codec_data = gst_buffer_new_and_alloc (2);
cdata = GST_BUFFER_DATA (codec_data);
sr_idx = map_adts_sample_index (aac_profile.nSampleRate);
cdata[0] = ((aac_profile.eAACProfile & 0x1F) << 3) | ((sr_idx & 0xE) >> 1);
cdata[1] = ((sr_idx & 0x1) << 7) | ((aac_profile.nChannels & 0xF) << 3);
GST_DEBUG_OBJECT (enc, "setting new codec_data");
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
gst_buffer_unref (codec_data);
}
return caps;
}
static guint