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sbc: Make sbc codec to write directly in application buffers and so avoiding memcpys.

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Luiz Augusto von Dentz 2007-11-12 18:15:59 +00:00 committed by Tim-Philipp Müller
parent 6f87580cfa
commit 97fcf537cd
2 changed files with 24 additions and 19 deletions
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16
ext/sbc/gstsbcdec.c
View file

@ -57,10 +57,11 @@ sbc_dec_chain (GstPad * pad, GstBuffer * buffer)
{
GstSbcDec *dec = GST_SBC_DEC (gst_pad_get_parent (pad));
GstFlowReturn res = GST_FLOW_OK;
guint size, offset = 0;
guint size, codesize, offset = 0;
guint8 *data;
GstClockTime timestamp;
codesize = sbc_get_codesize (&dec->sbc);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (dec->buffer) {
@ -81,10 +82,6 @@ sbc_dec_chain (GstPad * pad, GstBuffer * buffer)
GstCaps *caps, *temp;
int consumed;
consumed = sbc_decode (&dec->sbc, data + offset, size - offset);
if (consumed <= 0)
break;
caps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, dec->sbc.rate,
"channels", G_TYPE_INT, dec->sbc.channels, NULL);
@ -96,14 +93,19 @@ sbc_dec_chain (GstPad * pad, GstBuffer * buffer)
gst_caps_unref (caps);
res = gst_pad_alloc_buffer_and_set_caps (dec->srcpad,
GST_BUFFER_OFFSET_NONE, dec->sbc.len, temp, &output);
GST_BUFFER_OFFSET_NONE, codesize, temp, &output);
gst_caps_unref (temp);
if (res != GST_FLOW_OK)
goto done;
memcpy (GST_BUFFER_DATA (output), dec->sbc.data, dec->sbc.len);
consumed = sbc_decode (&dec->sbc, data + offset, size - offset,
GST_BUFFER_DATA (output), codesize, NULL);
if (consumed <= 0)
break;
GST_BUFFER_TIMESTAMP (output) = GST_BUFFER_TIMESTAMP (buffer);
res = gst_pad_push (dec->srcpad, output);
if (res != GST_FLOW_OK)

27
ext/sbc/gstsbcenc.c
View file

@ -136,10 +136,11 @@ sbc_enc_generate_srcpad_caps (GstSbcEnc * enc, GstCaps * caps)
enc->sbc.rate = rate;
enc->sbc.channels = channels;
if (enc->mode == 0)
enc->sbc.joint = CFG_MODE_JOINT_STEREO;
else
enc->sbc.joint = enc->mode;
if (enc->mode == CFG_MODE_AUTO)
enc->mode = CFG_MODE_JOINT_STEREO;
if (enc->mode == CFG_MODE_MONO || enc->mode == CFG_MODE_JOINT_STEREO)
enc->sbc.joint = 1;
enc->sbc.blocks = enc->blocks;
enc->sbc.subbands = enc->subbands;
@ -252,8 +253,10 @@ sbc_enc_chain (GstPad * pad, GstBuffer * buffer)
GstSbcEnc *enc = GST_SBC_ENC (gst_pad_get_parent (pad));
GstAdapter *adapter = enc->adapter;
GstFlowReturn res = GST_FLOW_OK;
gint codesize = enc->sbc.subbands * enc->sbc.blocks * enc->sbc.channels * 2;
gint codesize, frame_len;
codesize = sbc_get_codesize (&enc->sbc);
frame_len = sbc_get_frame_length (&enc->sbc);
gst_adapter_push (adapter, buffer);
while (gst_adapter_available (adapter) >= codesize && res == GST_FLOW_OK) {
@ -262,19 +265,20 @@ sbc_enc_chain (GstPad * pad, GstBuffer * buffer)
const guint8 *data;
int consumed;
caps = GST_PAD_CAPS (enc->srcpad);
res = gst_pad_alloc_buffer_and_set_caps (enc->srcpad,
GST_BUFFER_OFFSET_NONE, frame_len, caps, &output);
data = gst_adapter_peek (adapter, codesize);
consumed = sbc_encode (&enc->sbc, (gpointer) data, codesize);
consumed = sbc_encode (&enc->sbc, (gpointer) data, codesize,
GST_BUFFER_DATA (output), frame_len, NULL);
if (consumed <= 0) {
GST_ERROR ("comsumed < 0, codesize: %d", codesize);
break;
}
gst_adapter_flush (adapter, consumed);
caps = GST_PAD_CAPS (enc->srcpad);
res = gst_pad_alloc_buffer_and_set_caps (enc->srcpad,
GST_BUFFER_OFFSET_NONE, enc->sbc.len, caps, &output);
if (res != GST_FLOW_OK)
goto done;
@ -285,7 +289,6 @@ sbc_enc_chain (GstPad * pad, GstBuffer * buffer)
goto done;
}
memcpy (GST_BUFFER_DATA (output), enc->sbc.data, enc->sbc.len);
GST_BUFFER_TIMESTAMP (output) = GST_BUFFER_TIMESTAMP (buffer);
res = gst_pad_push (enc->srcpad, output);