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Diffstat (limited to 'chromium/third_party/webrtc/modules/audio_coding/neteq/dtmf_buffer.c')
-rw-r--r--chromium/third_party/webrtc/modules/audio_coding/neteq/dtmf_buffer.c232
1 files changed, 0 insertions, 232 deletions
diff --git a/chromium/third_party/webrtc/modules/audio_coding/neteq/dtmf_buffer.c b/chromium/third_party/webrtc/modules/audio_coding/neteq/dtmf_buffer.c
deleted file mode 100644
index 1788635c7df..00000000000
--- a/chromium/third_party/webrtc/modules/audio_coding/neteq/dtmf_buffer.c
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
- * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree. An additional intellectual property rights grant can be found
- * in the file PATENTS. All contributing project authors may
- * be found in the AUTHORS file in the root of the source tree.
- */
-
-/*
- * Implementation of packet buffer for DTMF messages.
- */
-
-#include "dtmf_buffer.h"
-
-#include "typedefs.h" /* to define endianness */
-#include "signal_processing_library.h"
-
-#include "neteq_error_codes.h"
-
-
-#ifdef NETEQ_ATEVENT_DECODE
-
-int16_t WebRtcNetEQ_DtmfRemoveEvent(dtmf_inst_t *DTMFdec_inst)
-{
-
- int i;
- for (i = 0; i < 3; i++)
- {
- DTMFdec_inst->EventQueue[i] = DTMFdec_inst->EventQueue[i + 1];
- DTMFdec_inst->EventQueueVolume[i] = DTMFdec_inst->EventQueueVolume[i + 1];
- DTMFdec_inst->EventQueueEnded[i] = DTMFdec_inst->EventQueueEnded[i + 1];
- DTMFdec_inst->EventQueueStartTime[i] = DTMFdec_inst->EventQueueStartTime[i + 1];
- DTMFdec_inst->EventQueueEndTime[i] = DTMFdec_inst->EventQueueEndTime[i + 1];
- }
- DTMFdec_inst->EventBufferSize--;
- DTMFdec_inst->EventQueue[3] = -1;
- DTMFdec_inst->EventQueueVolume[3] = 0;
- DTMFdec_inst->EventQueueEnded[3] = 0;
- DTMFdec_inst->EventQueueStartTime[3] = 0;
- DTMFdec_inst->EventQueueEndTime[3] = 0;
-
- return 0;
-}
-
-int16_t WebRtcNetEQ_DtmfDecoderInit(dtmf_inst_t *DTMFdec_inst, uint16_t fs,
- int16_t MaxPLCtime)
-{
- int i;
- if (((fs != 8000) && (fs != 16000) && (fs != 32000) && (fs != 48000)) || (MaxPLCtime < 0))
- {
- return DTMF_DEC_PARAMETER_ERROR;
- }
- if (fs == 8000)
- DTMFdec_inst->framelen = 80;
- else if (fs == 16000)
- DTMFdec_inst->framelen = 160;
- else if (fs == 32000)
- DTMFdec_inst->framelen = 320;
- else
- /* fs == 48000 */
- DTMFdec_inst->framelen = 480;
-
- DTMFdec_inst->MaxPLCtime = MaxPLCtime;
- DTMFdec_inst->CurrentPLCtime = 0;
- DTMFdec_inst->EventBufferSize = 0;
- for (i = 0; i < 4; i++)
- {
- DTMFdec_inst->EventQueue[i] = -1;
- DTMFdec_inst->EventQueueVolume[i] = 0;
- DTMFdec_inst->EventQueueEnded[i] = 0;
- DTMFdec_inst->EventQueueStartTime[i] = 0;
- DTMFdec_inst->EventQueueEndTime[i] = 0;
- }
- return 0;
-}
-
-int16_t WebRtcNetEQ_DtmfInsertEvent(dtmf_inst_t *DTMFdec_inst,
- const int16_t *encoded, int16_t len,
- uint32_t timeStamp)
-{
-
- int i;
- int16_t value;
- const int16_t *EventStart;
- int16_t endEvent;
- int16_t Volume;
- int16_t Duration;
- int16_t position = -1;
-
- /* Extract event */
- if (len == 4)
- {
- EventStart = encoded;
-#ifdef WEBRTC_ARCH_BIG_ENDIAN
- value=((*EventStart)>>8);
- endEvent=((*EventStart)&0x80)>>7;
- Volume=((*EventStart)&0x3F);
- Duration=EventStart[1];
-#else
- value = ((*EventStart) & 0xFF);
- endEvent = ((*EventStart) & 0x8000) >> 15;
- Volume = ((*EventStart) & 0x3F00) >> 8;
- Duration = (((((uint16_t) EventStart[1]) >> 8) & 0xFF)
- | (((uint16_t) (EventStart[1] & 0xFF)) << 8));
-#endif
- /* Only events between 0-15 are supported (DTMF tones) */
- if ((value < 0) || (value > 15))
- {
- return 0;
- }
-
- /* Discard all DTMF tones with really low volume (<-36dbm0) */
- if (Volume > 36)
- {
- return 0;
- }
-
- /*Are there any unended events of the same type? */
- for (i = 0; i < DTMFdec_inst->EventBufferSize; i++)
- {
- /* Going through the whole queue even when we have found a match will
- ensure that we add to the latest applicable event */
- if ((DTMFdec_inst->EventQueue[i] == value) && (!DTMFdec_inst->EventQueueEnded[i]
- || endEvent)) position = i;
- }
- if (position > -1)
- {
- DTMFdec_inst->EventQueueVolume[position] = Volume;
- if ((timeStamp + Duration) > DTMFdec_inst->EventQueueEndTime[position]) DTMFdec_inst->EventQueueEndTime[position]
- = DTMFdec_inst->EventQueueStartTime[position] + Duration;
- if (endEvent) DTMFdec_inst->EventQueueEnded[position] = 1;
- }
- else
- {
- if (DTMFdec_inst->EventBufferSize == MAX_DTMF_QUEUE_SIZE)
- { /* Buffer full */
- /* Remove one event */
- DTMFdec_inst->EventBufferSize--;
- }
- /* Store data in the instance on a new position*/
- DTMFdec_inst->EventQueue[DTMFdec_inst->EventBufferSize] = value;
- DTMFdec_inst->EventQueueVolume[DTMFdec_inst->EventBufferSize] = Volume;
- DTMFdec_inst->EventQueueEnded[DTMFdec_inst->EventBufferSize] = endEvent;
- DTMFdec_inst->EventQueueStartTime[DTMFdec_inst->EventBufferSize] = timeStamp;
- DTMFdec_inst->EventQueueEndTime[DTMFdec_inst->EventBufferSize] = timeStamp
- + Duration;
- DTMFdec_inst->EventBufferSize++;
- }
- return 0;
- }
- return DTMF_INSERT_ERROR;
-}
-
-int16_t WebRtcNetEQ_DtmfDecode(dtmf_inst_t *DTMFdec_inst, int16_t *event,
- int16_t *volume, uint32_t currTimeStamp)
-{
-
- if (DTMFdec_inst->EventBufferSize < 1) return 0; /* No events to play */
-
- /* We have events, is it time to play them? */
- if (currTimeStamp < DTMFdec_inst->EventQueueStartTime[0])
- {
- /*No, just return zero */
- return 0;
- }
-
- /* Continue on the event that is currently ongoing */
- *event = DTMFdec_inst->EventQueue[0];
- *volume = DTMFdec_inst->EventQueueVolume[0];
-
- if (DTMFdec_inst->EventQueueEndTime[0] >= (currTimeStamp + DTMFdec_inst->framelen))
- {
-
- /* Still at least framLen to play */
-
- DTMFdec_inst->CurrentPLCtime = 0;
- if ((DTMFdec_inst->EventQueueEndTime[0] == (currTimeStamp + DTMFdec_inst->framelen))
- && (DTMFdec_inst->EventQueueEnded[0]))
- { /* We are done */
- /*Remove the event from Queue*/
- WebRtcNetEQ_DtmfRemoveEvent(DTMFdec_inst);
- }
- return DTMFdec_inst->framelen;
-
- }
- else
- {
- if ((DTMFdec_inst->EventQueueEnded[0]) || (DTMFdec_inst->EventQueue[1] > -1))
- {
- /*
- * Less than frameLen to play and end of event or already received next event.
- * Give our a whole frame size of audio to simplify things.
- */
-
- /*Remove the event from Queue*/
- WebRtcNetEQ_DtmfRemoveEvent(DTMFdec_inst);
- DTMFdec_inst->CurrentPLCtime = 0;
-
- return DTMFdec_inst->framelen;
-
- }
- else
- {
- /* Less than frameLen to play and not end of event. */
- DTMFdec_inst->CurrentPLCtime = (int16_t) (currTimeStamp
- - DTMFdec_inst->EventQueueEndTime[0]);
-
- if ((DTMFdec_inst->CurrentPLCtime > DTMFdec_inst->MaxPLCtime)
- || (DTMFdec_inst->CurrentPLCtime < -DTMFdec_inst->MaxPLCtime))
- {
- /*Remove the event from queue*/
- WebRtcNetEQ_DtmfRemoveEvent(DTMFdec_inst);
- DTMFdec_inst->CurrentPLCtime = 0;
- }
-
- /* If we have a new event that it's time to play */
- if ((DTMFdec_inst->EventQueue[1] > -1) && (DTMFdec_inst->EventQueueStartTime[1]
- >= (currTimeStamp + DTMFdec_inst->framelen)))
- {
- /*Remove the event from queue*/
- WebRtcNetEQ_DtmfRemoveEvent(DTMFdec_inst);
- DTMFdec_inst->CurrentPLCtime = 0;
- }
-
- return DTMFdec_inst->framelen;
- }
- }
-}
-
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 22:42:25 +0000