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-rw-r--r--pjmedia/src/pjmedia-codec/speex/z-jitter.c316
1 files changed, 0 insertions, 316 deletions
diff --git a/pjmedia/src/pjmedia-codec/speex/z-jitter.c b/pjmedia/src/pjmedia-codec/speex/z-jitter.c
deleted file mode 100644
index 55a0833f..00000000
--- a/pjmedia/src/pjmedia-codec/speex/z-jitter.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/* Copyright (C) 2002 Jean-Marc Valin
- File: speex_jitter.h
-
- Adaptive jitter buffer for Speex
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- - Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- - Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- - Neither the name of the Xiph.org Foundation nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#ifndef NULL
-#define NULL 0
-#endif
-
-#include "misc.h"
-#include <speex/speex.h>
-#include <speex/speex_bits.h>
-#include <speex/speex_jitter.h>
-#include <stdio.h>
-
-#define LATE_BINS 4
-
-void speex_jitter_init(SpeexJitter *jitter, void *decoder, int sampling_rate)
-{
- int i;
- for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
- {
- jitter->len[i]=-1;
- jitter->timestamp[i]=-1;
- }
-
- jitter->dec = decoder;
- speex_decoder_ctl(decoder, SPEEX_GET_FRAME_SIZE, &jitter->frame_size);
- jitter->frame_time = jitter->frame_size;
-
- speex_bits_init(&jitter->current_packet);
- jitter->valid_bits = 0;
-
- jitter->buffer_size = 4;
-
- jitter->pointer_timestamp = -jitter->frame_time * jitter->buffer_size;
- jitter->reset_state = 1;
- jitter->lost_count = 0;
- jitter->loss_rate = 0;
-}
-
-void speex_jitter_destroy(SpeexJitter *jitter)
-{
- speex_bits_destroy(&jitter->current_packet);
-}
-
-
-void speex_jitter_put(SpeexJitter *jitter, char *packet, int len, int timestamp)
-{
- int i,j;
- int arrival_margin;
-
- if (jitter->reset_state)
- {
- jitter->reset_state=0;
- jitter->pointer_timestamp = timestamp-jitter->frame_time * jitter->buffer_size;
- for (i=0;i<MAX_MARGIN;i++)
- {
- jitter->shortterm_margin[i] = 0;
- jitter->longterm_margin[i] = 0;
- }
- for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
- {
- jitter->len[i]=-1;
- jitter->timestamp[i]=-1;
- }
- fprintf(stderr, "reset to %d\n", timestamp);
- }
-
- /* Cleanup buffer (remove old packets that weren't played) */
- for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
- {
- if (jitter->timestamp[i]<jitter->pointer_timestamp)
- {
- jitter->len[i]=-1;
- /*if (jitter->timestamp[i] != -1)
- fprintf (stderr, "discarding %d %d\n", jitter->timestamp[i], jitter->pointer_timestamp);*/
- }
- }
-
- /*Find an empty slot in the buffer*/
- for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
- {
- if (jitter->len[i]==-1)
- break;
- }
-
- /*fprintf(stderr, "%d %d %f\n", timestamp, jitter->pointer_timestamp, jitter->drift_average);*/
- if (i==SPEEX_JITTER_MAX_BUFFER_SIZE)
- {
- int earliest=jitter->timestamp[0];
- i=0;
- for (j=1;j<SPEEX_JITTER_MAX_BUFFER_SIZE;j++)
- {
- if (jitter->timestamp[j]<earliest)
- {
- earliest = jitter->timestamp[j];
- i=j;
- }
- }
- /*fprintf (stderr, "Buffer is full, discarding earliest frame %d (currently at %d)\n", timestamp, jitter->pointer_timestamp);*/
- /*No place left in the buffer*/
-
- /*skip some frame(s) */
- /*return;*/
- }
-
- /* Copy packet in buffer */
- if (len>SPEEX_JITTER_MAX_PACKET_SIZE)
- len=SPEEX_JITTER_MAX_PACKET_SIZE;
- for (j=0;j<len/BYTES_PER_CHAR;j++)
- jitter->buf[i][j]=packet[j];
- jitter->timestamp[i]=timestamp;
- jitter->len[i]=len;
-
- /* Don't count late packets when adjusting the synchro (we're taking care of them elsewhere) */
- /*if (timestamp <= jitter->pointer_timestamp)
- {
- fprintf (stderr, "frame for timestamp %d arrived too late (at time %d)\n", timestamp, jitter->pointer_timestamp);
- }*/
-
- /* Adjust the buffer size depending on network conditions */
- arrival_margin = (timestamp - jitter->pointer_timestamp - jitter->frame_time);
-
- if (arrival_margin >= -LATE_BINS*jitter->frame_time)
- {
- int int_margin;
- for (i=0;i<MAX_MARGIN;i++)
- {
- jitter->shortterm_margin[i] *= .98;
- jitter->longterm_margin[i] *= .995;
- }
- int_margin = (arrival_margin + LATE_BINS*jitter->frame_time)/jitter->frame_time;
- if (int_margin>MAX_MARGIN-1)
- int_margin = MAX_MARGIN-1;
- if (int_margin>=0)
- {
- jitter->shortterm_margin[int_margin] += .02;
- jitter->longterm_margin[int_margin] += .005;
- }
- }
-
- /*fprintf (stderr, "margin : %d %d %f %f %f %f\n", arrival_margin, jitter->buffer_size, 100*jitter->loss_rate, 100*jitter->late_ratio, 100*jitter->ontime_ratio, 100*jitter->early_ratio);*/
-}
-
-void speex_jitter_get(SpeexJitter *jitter, short *out, int *current_timestamp)
-{
- int i;
- int ret;
- float late_ratio_short;
- float late_ratio_long;
- float ontime_ratio_short;
- float ontime_ratio_long;
- float early_ratio_short;
- float early_ratio_long;
-
- late_ratio_short = 0;
- late_ratio_long = 0;
- for (i=0;i<LATE_BINS;i++)
- {
- late_ratio_short += jitter->shortterm_margin[i];
- late_ratio_long += jitter->longterm_margin[i];
- }
- ontime_ratio_short = jitter->shortterm_margin[LATE_BINS];
- ontime_ratio_long = jitter->longterm_margin[LATE_BINS];
- early_ratio_short = early_ratio_long = 0;
- for (i=LATE_BINS+1;i<MAX_MARGIN;i++)
- {
- early_ratio_short += jitter->shortterm_margin[i];
- early_ratio_long += jitter->longterm_margin[i];
- }
- if (0&&jitter->pointer_timestamp%1000==0)
- {
- fprintf (stderr, "%f %f %f %f %f %f\n", early_ratio_short, early_ratio_long, ontime_ratio_short, ontime_ratio_long, late_ratio_short, late_ratio_long);
- /*fprintf (stderr, "%f %f\n", early_ratio_short + ontime_ratio_short + late_ratio_short, early_ratio_long + ontime_ratio_long + late_ratio_long);*/
- }
-
- if (late_ratio_short > .1 || late_ratio_long > .03)
- {
- jitter->shortterm_margin[MAX_MARGIN-1] += jitter->shortterm_margin[MAX_MARGIN-2];
- jitter->longterm_margin[MAX_MARGIN-1] += jitter->longterm_margin[MAX_MARGIN-2];
- for (i=MAX_MARGIN-3;i>=0;i--)
- {
- jitter->shortterm_margin[i+1] = jitter->shortterm_margin[i];
- jitter->longterm_margin[i+1] = jitter->longterm_margin[i];
- }
- jitter->shortterm_margin[0] = 0;
- jitter->longterm_margin[0] = 0;
- /*fprintf (stderr, "interpolate frame\n");*/
- speex_decode_int(jitter->dec, NULL, out);
- if (current_timestamp)
- *current_timestamp = jitter->pointer_timestamp;
- return;
- }
-
- /* Increment timestamp */
- jitter->pointer_timestamp += jitter->frame_time;
-
- if (late_ratio_short + ontime_ratio_short < .005 && late_ratio_long + ontime_ratio_long < .01 && early_ratio_short > .8)
- {
- jitter->shortterm_margin[0] += jitter->shortterm_margin[1];
- jitter->longterm_margin[0] += jitter->longterm_margin[1];
- for (i=1;i<MAX_MARGIN-1;i++)
- {
- jitter->shortterm_margin[i] = jitter->shortterm_margin[i+1];
- jitter->longterm_margin[i] = jitter->longterm_margin[i+1];
- }
- jitter->shortterm_margin[MAX_MARGIN-1] = 0;
- jitter->longterm_margin[MAX_MARGIN-1] = 0;
- /*fprintf (stderr, "drop frame\n");*/
- jitter->pointer_timestamp += jitter->frame_time;
- }
-
- if (current_timestamp)
- *current_timestamp = jitter->pointer_timestamp;
-
- /* Send zeros while we fill in the buffer */
- if (jitter->pointer_timestamp<0)
- {
- for (i=0;i<jitter->frame_size;i++)
- out[i]=0;
- return;
- }
-
- /* Search the buffer for a packet with the right timestamp */
- for (i=0;i<SPEEX_JITTER_MAX_BUFFER_SIZE;i++)
- {
- if (jitter->len[i]!=-1 && jitter->timestamp[i]==jitter->pointer_timestamp)
- break;
- }
-
- if (i==SPEEX_JITTER_MAX_BUFFER_SIZE)
- {
- /* No packet found */
- if (jitter->valid_bits)
- {
- /* Try decoding last received packet */
- ret = speex_decode_int(jitter->dec, &jitter->current_packet, out);
- if (ret == 0)
- {
- jitter->lost_count = 0;
- return;
- } else {
- jitter->valid_bits = 0;
- }
- }
-
- /*fprintf (stderr, "lost/late frame %d\n", jitter->pointer_timestamp);*/
- /*Packet is late or lost*/
- speex_decode_int(jitter->dec, NULL, out);
- jitter->lost_count++;
- if (jitter->lost_count>=25)
- {
- jitter->lost_count = 0;
- jitter->reset_state = 1;
- speex_decoder_ctl(jitter->dec, SPEEX_RESET_STATE, NULL);
- }
- jitter->loss_rate = .999*jitter->loss_rate + .001;
- } else {
- jitter->lost_count = 0;
- /* Found the right packet */
- speex_bits_read_from(&jitter->current_packet, jitter->buf[i], jitter->len[i]);
- jitter->len[i]=-1;
- /* Decode packet */
- ret = speex_decode_int(jitter->dec, &jitter->current_packet, out);
- if (ret == 0)
- {
- jitter->valid_bits = 1;
- } else {
- /* Error while decoding */
- for (i=0;i<jitter->frame_size;i++)
- out[i]=0;
- }
- jitter->loss_rate = .999*jitter->loss_rate;
- }
-
-
-}
-
-int speex_jitter_get_pointer_timestamp(SpeexJitter *jitter)
-{
- return jitter->pointer_timestamp;
-}
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