ext/speex/: Use integer encoding and decoding functions instead of converting the integer input to float in the eleme...

Original commit message from CVS:
* ext/speex/gstspeexdec.c: (speex_dec_chain_parse_data):
* ext/speex/gstspeexdec.h:
* ext/speex/gstspeexenc.c: (gst_speex_enc_encode):
* ext/speex/gstspeexenc.h:
Use integer encoding and decoding functions instead of converting
the integer input to float in the element. The libspeex integer
functions are doing this for us already or, if libspeex was compiled
in integer mode, they're doing everything using integer arithmetics.
Also saves some copying around.

4 files changed, 25 insertions, 37 deletions

diff --git a/ext/speex/gstspeexdec.c b/ext/speex/gstspeexdec.c
index a3881451..0987d865 100644
--- a/ext/speex/gstspeexdec.c
+++ b/ext/speex/gstspeexdec.c
@@ -685,47 +685,43 @@ speex_dec_chain_parse_data (GstSpeexDec * dec, GstBuffer * buf,
   for (i = 0; i < fpp; i++) {
     GstBuffer *outbuf;
     gint16 *out_data;
-    gint ret, j;
+    gint ret;
 
     GST_LOG_OBJECT (dec, "decoding frame %d/%d", i, fpp);
 
-    ret = speex_decode (dec->state, bits, dec->output);
+    res = gst_pad_alloc_buffer_and_set_caps (dec->srcpad,
+        GST_BUFFER_OFFSET_NONE, dec->frame_size * dec->header->nb_channels * 2,
+        GST_PAD_CAPS (dec->srcpad), &outbuf);
+
+    if (res != GST_FLOW_OK) {
+      GST_DEBUG_OBJECT (dec, "buf alloc flow: %s", gst_flow_get_name (res));
+      return res;
+    }
+
+    out_data = (gint16 *) GST_BUFFER_DATA (outbuf);
+
+    ret = speex_decode_int (dec->state, bits, out_data);
     if (ret == -1) {
       /* uh? end of stream */
       GST_WARNING_OBJECT (dec, "Unexpected end of stream found");
+      gst_buffer_unref (outbuf);
+      outbuf = NULL;
       break;
     } else if (ret == -2) {
       GST_WARNING_OBJECT (dec, "Decoding error: corrupted stream?");
+      gst_buffer_unref (outbuf);
+      outbuf = NULL;
       break;
     }
 
     if (bits && speex_bits_remaining (bits) < 0) {
       GST_WARNING_OBJECT (dec, "Decoding overflow: corrupted stream?");
+      gst_buffer_unref (outbuf);
+      outbuf = NULL;
       break;
     }
     if (dec->header->nb_channels == 2)
-      speex_decode_stereo (dec->output, dec->frame_size, &dec->stereo);
-
-    res = gst_pad_alloc_buffer_and_set_caps (dec->srcpad,
-        GST_BUFFER_OFFSET_NONE, dec->frame_size * dec->header->nb_channels * 2,
-        GST_PAD_CAPS (dec->srcpad), &outbuf);
-
-    if (res != GST_FLOW_OK) {
-      GST_DEBUG_OBJECT (dec, "buf alloc flow: %s", gst_flow_get_name (res));
-      return res;
-    }
-
-    out_data = (gint16 *) GST_BUFFER_DATA (outbuf);
-
-    /*PCM saturation (just in case) */
-    for (j = 0; j < dec->frame_size * dec->header->nb_channels; j++) {
-      if (dec->output[j] > 32767.0)
-        out_data[j] = 32767;
-      else if (dec->output[i] < -32768.0)
-        out_data[j] = -32768;
-      else
-        out_data[j] = (gint16) dec->output[j];
-    }
+      speex_decode_stereo_int (out_data, dec->frame_size, &dec->stereo);
 
     if (dec->granulepos == -1) {
       if (dec->segment.format != GST_FORMAT_TIME) {
diff --git a/ext/speex/gstspeexdec.h b/ext/speex/gstspeexdec.h
index 18ba8d5b..0d95171a 100644
--- a/ext/speex/gstspeexdec.h
+++ b/ext/speex/gstspeexdec.h
@@ -63,8 +63,6 @@ struct _GstSpeexDec {
   SpeexCallback         callback;
   SpeexBits             bits;
 
-  gfloat                output[DEC_MAX_FRAME_SIZE];
-
   gboolean              enh;
 
   gint                  frame_size;
diff --git a/ext/speex/gstspeexenc.c b/ext/speex/gstspeexenc.c
index a7059edf..963d5607 100644
--- a/ext/speex/gstspeexenc.c
+++ b/ext/speex/gstspeexenc.c
@@ -867,25 +867,21 @@ gst_speex_enc_encode (GstSpeexEnc * enc, gboolean flush)
 
   while (gst_adapter_available (enc->adapter) >= bytes) {
     gint16 *data;
-    gint i;
     gint outsize, written;
     GstBuffer *outbuf;
 
-    data = (gint16 *) gst_adapter_peek (enc->adapter, bytes);
-
-    for (i = 0; i < frame_size * enc->channels; i++) {
-      enc->input[i] = (gfloat) data[i];
-    }
-    gst_adapter_flush (enc->adapter, bytes);
+    data = (gint16 *) gst_adapter_take (enc->adapter, bytes);
 
     enc->samples_in += frame_size;
 
     GST_DEBUG_OBJECT (enc, "encoding %d samples (%d bytes)", frame_size, bytes);
 
     if (enc->channels == 2) {
-      speex_encode_stereo (enc->input, frame_size, &enc->bits);
+      speex_encode_stereo_int (data, frame_size, &enc->bits);
     }
-    speex_encode (enc->state, enc->input, &enc->bits);
+    speex_encode_int (enc->state, data, &enc->bits);
+
+    g_free (data);
 
     enc->frameno++;
     enc->frameno_out++;
diff --git a/ext/speex/gstspeexenc.h b/ext/speex/gstspeexenc.h
index a5bfb366..99e0086b 100644
--- a/ext/speex/gstspeexenc.h
+++ b/ext/speex/gstspeexenc.h
@@ -107,8 +107,6 @@ struct _GstSpeexEnc {
   guint8                *comments;
   gint                  comment_len;
 
-  gfloat                input[MAX_FRAME_SIZE];
-
   /* Timestamp and granulepos tracking */
   GstClockTime     start_ts;
   GstClockTime     next_ts;