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sbc: port encoder to GstAudioEncoder

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https://bugzilla.gnome.org/show_bug.cgi?id=690582
This commit is contained in:
Tim-Philipp Müller 2013-03-27 13:11:11 +00:00
parent ca9daee444
commit a028a05054
5 changed files with 209 additions and 980 deletions
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4
ext/sbc/Makefile.am
View file

@ -3,13 +3,11 @@ plugin_LTLIBRARIES = libgstsbc.la
noinst_HEADERS = \
gstsbcdec.h \
gstsbcenc.h \
gstsbcutil.h
gstsbcenc.h
libgstsbc_la_SOURCES = \
gstsbcdec.c \
gstsbcenc.c \
gstsbcutil.c \
sbc-plugin.c
libgstsbc_la_CFLAGS = \
$(GST_PLUGINS_BASE_CFLAGS) \

674
ext/sbc/gstsbcenc.c
View file

@ -1,8 +1,6 @@
/* GStreamer SBC audio encoder
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
* Copyright (C) 2013 Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -20,130 +18,35 @@
*
*/
/**
* SECTION:element-sbenc
*
* This element encodes raw integer PCM audio into a Bluetooth SBC audio.
*
* Encoding paramets such as blocks, subbands, bitpool, channel-mode, and
* allocation-mode can be set by adding a capsfilter element with appropriate
* filtercaps after the sbcenc encoder element.
*
* <refsect2>
* <title>Example pipelines</title>
* |[
* gst-launch-1.0 -v audiotestsrc ! sbcenc ! rtpsbcpay ! udpsink
* ]| Encode a sine wave into SBC, RTP payload it and send over the network using UDP
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include "gstsbcutil.h"
#include "gstsbcenc.h"
#include <gst/audio/audio.h>
#define SBC_ENC_DEFAULT_CHANNEL_MODE SBC_MODE_AUTO
#define SBC_ENC_DEFAULT_BLOCKS 0
#define SBC_ENC_DEFAULT_SUB_BANDS 0
#define SBC_ENC_DEFAULT_ALLOCATION_METHOD SBC_AM_AUTO
#define SBC_ENC_DEFAULT_RATE 0
#define SBC_ENC_DEFAULT_CHANNELS 0
#define SBC_ENC_BITPOOL_AUTO 1
#define SBC_ENC_BITPOOL_MIN 2
#define SBC_ENC_BITPOOL_MIN_STR "2"
#define SBC_ENC_BITPOOL_MAX 64
#define SBC_ENC_BITPOOL_MAX_STR "64"
GST_DEBUG_CATEGORY_STATIC (sbc_enc_debug);
#define GST_CAT_DEFAULT sbc_enc_debug
#define GST_TYPE_SBC_CHANNEL_MODE (gst_sbc_channel_mode_get_type())
static GType
gst_sbc_channel_mode_get_type (void)
{
static GType sbc_channel_mode_type = 0;
static GEnumValue sbc_channel_modes[] = {
{SBC_MODE_MONO, "Mono", "mono"},
{SBC_MODE_DUAL_CHANNEL, "Dual", "dual"},
{SBC_MODE_STEREO, "Stereo", "stereo"},
{SBC_MODE_JOINT_STEREO, "Joint Stereo", "joint"},
{SBC_MODE_AUTO, "Auto", "auto"},
{-1, NULL, NULL}
};
if (!sbc_channel_mode_type) {
sbc_channel_mode_type =
g_enum_register_static ("GstSbcChannelMode", sbc_channel_modes);
}
return sbc_channel_mode_type;
}
#define GST_TYPE_SBC_ALLOCATION_METHOD (gst_sbc_allocation_method_get_type())
static GType
gst_sbc_allocation_method_get_type (void)
{
static GType sbc_allocation_method_type = 0;
static GEnumValue sbc_allocation_methods[] = {
{SBC_AM_LOUDNESS, "Loudness", "loudness"},
{SBC_AM_SNR, "SNR", "snr"},
{SBC_AM_AUTO, "Auto", "auto"},
{-1, NULL, NULL}
};
if (!sbc_allocation_method_type)
sbc_allocation_method_type =
g_enum_register_static ("GstSbcAllocationMethod",
sbc_allocation_methods);
return sbc_allocation_method_type;
}
#define GST_TYPE_SBC_BLOCKS (gst_sbc_blocks_get_type())
static GType
gst_sbc_blocks_get_type (void)
{
static GType sbc_blocks_type = 0;
static GEnumValue sbc_blocks[] = {
{0, "Auto", "auto"},
{4, "4", "4"},
{8, "8", "8"},
{12, "12", "12"},
{16, "16", "16"},
{-1, NULL, NULL}
};
if (!sbc_blocks_type)
sbc_blocks_type = g_enum_register_static ("GstSbcBlocks", sbc_blocks);
return sbc_blocks_type;
}
#define GST_TYPE_SBC_SUBBANDS (gst_sbc_subbands_get_type())
static GType
gst_sbc_subbands_get_type (void)
{
static GType sbc_subbands_type = 0;
static GEnumValue sbc_subbands[] = {
{0, "Auto", "auto"},
{4, "4 subbands", "4"},
{8, "8 subbands", "8"},
{-1, NULL, NULL}
};
if (!sbc_subbands_type)
sbc_subbands_type = g_enum_register_static ("GstSbcSubbands", sbc_subbands);
return sbc_subbands_type;
}
enum
{
PROP_0,
PROP_MODE,
PROP_ALLOCATION,
PROP_BLOCKS,
PROP_SUBBANDS,
PROP_BITPOOL
};
/* FIXME: rewrite based on GstAudioEncoder base class */
#define parent_class gst_sbc_enc_parent_class
G_DEFINE_TYPE (GstSbcEnc, gst_sbc_enc, GST_TYPE_ELEMENT);
G_DEFINE_TYPE (GstSbcEnc, gst_sbc_enc, GST_TYPE_AUDIO_ENCODER);
static GstStaticPadTemplate sbc_enc_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
@ -160,99 +63,39 @@ GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
"blocks = (int) { 4, 8, 12, 16 }, "
"subbands = (int) { 4, 8 }, "
"allocation-method = (string) { snr, loudness }, "
"bitpool = (int) [ " SBC_ENC_BITPOOL_MIN_STR
", " SBC_ENC_BITPOOL_MAX_STR " ]"));
"bitpool = (int) [ 2, 64 ]"));
static gboolean gst_sbc_enc_fill_sbc_params (GstSbcEnc * enc, GstCaps * caps);
static gboolean gst_sbc_enc_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event);
/* FIXME does this make sense? */
static GstCaps *
sbc_enc_generate_srcpad_caps (GstSbcEnc * enc)
{
GstCaps *src_caps;
GstStructure *structure;
GEnumValue *enum_value;
GEnumClass *enum_class;
GValue *value;
src_caps = gst_caps_copy (gst_pad_get_pad_template_caps (enc->srcpad));
structure = gst_caps_get_structure (src_caps, 0);
/* FIXME: use gst_structure_set() */
value = g_new0 (GValue, 1);
if (enc->rate != 0)
gst_sbc_util_set_structure_int_param (structure, "rate", enc->rate, value);
if (enc->channels != 0)
gst_sbc_util_set_structure_int_param (structure, "channels",
enc->channels, value);
if (enc->subbands != 0)
gst_sbc_util_set_structure_int_param (structure, "subbands",
enc->subbands, value);
if (enc->blocks != 0)
gst_sbc_util_set_structure_int_param (structure, "blocks",
enc->blocks, value);
if (enc->bitpool != SBC_ENC_BITPOOL_AUTO)
gst_sbc_util_set_structure_int_param (structure, "bitpool",
enc->bitpool, value);
if (enc->mode != SBC_ENC_DEFAULT_CHANNEL_MODE) {
enum_class = g_type_class_ref (GST_TYPE_SBC_CHANNEL_MODE);
enum_value = g_enum_get_value (enum_class, enc->mode);
gst_sbc_util_set_structure_string_param (structure, "channel-mode",
enum_value->value_nick, value);
g_type_class_unref (enum_class);
}
if (enc->allocation != SBC_AM_AUTO) {
enum_class = g_type_class_ref (GST_TYPE_SBC_ALLOCATION_METHOD);
enum_value = g_enum_get_value (enum_class, enc->allocation);
gst_sbc_util_set_structure_string_param (structure, "allocation-method",
enum_value->value_nick, value);
g_type_class_unref (enum_class);
}
g_free (value);
return src_caps;
}
static GstCaps *
sbc_enc_src_getcaps (GstPad * pad)
{
GstSbcEnc *enc;
enc = GST_SBC_ENC (GST_PAD_PARENT (pad));
return sbc_enc_generate_srcpad_caps (enc);
}
static gboolean gst_sbc_enc_start (GstAudioEncoder * enc);
static gboolean gst_sbc_enc_stop (GstAudioEncoder * enc);
static gboolean gst_sbc_enc_set_format (GstAudioEncoder * enc,
GstAudioInfo * info);
static GstFlowReturn gst_sbc_enc_handle_frame (GstAudioEncoder * enc,
GstBuffer * buffer);
static gboolean
sbc_enc_negotiate_output_caps (GstSbcEnc * enc, GstCaps * in_caps)
gst_sbc_enc_set_format (GstAudioEncoder * audio_enc, GstAudioInfo * info)
{
const gchar *allocation_method, *channel_mode;
GstSbcEnc *enc = GST_SBC_ENC (audio_enc);
GstStructure *s;
GstCaps *caps, *filter_caps;
GstCaps *output_caps;
guint sampleframes_per_frame;
GST_INFO_OBJECT (enc, "input caps %" GST_PTR_FORMAT, in_caps);
caps = gst_pad_get_allowed_caps (enc->srcpad);
if (caps == NULL)
caps = sbc_enc_src_getcaps (enc->srcpad);
enc->rate = GST_AUDIO_INFO_RATE (info);
enc->channels = GST_AUDIO_INFO_CHANNELS (info);
/* negotiate output format based on downstream caps restrictions */
caps = gst_pad_get_allowed_caps (GST_AUDIO_ENCODER_SRC_PAD (enc));
if (caps == GST_CAPS_NONE || gst_caps_is_empty (caps)) {
gst_caps_unref (caps);
return FALSE;
}
if (caps == NULL)
caps = gst_static_pad_template_get_caps (&sbc_enc_src_factory);
/* fixate output caps */
filter_caps = gst_caps_new_simple ("audio/x-sbc", "rate", G_TYPE_INT,
enc->rate, "channels", G_TYPE_INT, enc->channels, NULL);
@ -260,15 +103,17 @@ sbc_enc_negotiate_output_caps (GstSbcEnc * enc, GstCaps * in_caps)
gst_caps_unref (filter_caps);
if (output_caps == NULL || gst_caps_is_empty (output_caps)) {
GST_DEBUG_OBJECT (enc, "Couldn't negotiate output caps with input rate %d "
"and input channels %d and allowed output caps %" GST_PTR_FORMAT,
GST_WARNING_OBJECT (enc, "Couldn't negotiate output caps with input rate "
"%d and input channels %d and allowed output caps %" GST_PTR_FORMAT,
enc->rate, enc->channels, caps);
if (output_caps)
gst_caps_unref (output_caps);
gst_caps_unref (caps);
return FALSE;
}
gst_caps_unref (caps);
caps = NULL;
GST_DEBUG_OBJECT (enc, "fixating caps %" GST_PTR_FORMAT, output_caps);
output_caps = gst_caps_truncate (output_caps);
@ -280,9 +125,12 @@ sbc_enc_negotiate_output_caps (GstSbcEnc * enc, GstCaps * in_caps)
return FALSE;
}
} else {
if (gst_structure_fixate_field_string (s, "channel-mode", "joint")
|| gst_structure_fixate_field_string (s, "channel-mode", "stereo")) {
gst_structure_fixate_field_string (s, "channel-mode", "dual");
if (!gst_structure_fixate_field_string (s, "channel-mode", "joint") &&
!gst_structure_fixate_field_string (s, "channel-mode", "stereo") &&
!gst_structure_fixate_field_string (s, "channel-mode", "dual")) {
GST_DEBUG_OBJECT (enc, "Failed to fixate channel-mode for 2 channels");
gst_caps_unref (output_caps);
return FALSE;
}
}
@ -294,304 +142,201 @@ sbc_enc_negotiate_output_caps (GstSbcEnc * enc, GstCaps * in_caps)
/* in case there's anything else left to fixate */
output_caps = gst_caps_fixate (output_caps);
gst_caps_set_simple (output_caps, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
GST_INFO_OBJECT (enc, "output caps %" GST_PTR_FORMAT, output_caps);
if (!gst_sbc_enc_fill_sbc_params (enc, output_caps)) {
GST_WARNING_OBJECT (enc, "failed to configure encoder from output "
"caps %" GST_PTR_FORMAT, output_caps);
return FALSE;
}
gst_pad_send_event (enc->sinkpad, gst_event_new_caps (output_caps));
gst_caps_unref (output_caps);
/* let's see what we fixated to */
s = gst_caps_get_structure (output_caps, 0);
gst_structure_get_int (s, "blocks", &enc->blocks);
gst_structure_get_int (s, "subbands", &enc->subbands);
gst_structure_get_int (s, "bitpool", &enc->bitpool);
allocation_method = gst_structure_get_string (s, "allocation-method");
channel_mode = gst_structure_get_string (s, "channel-mode");
return TRUE;
}
/* we want to be handed all available samples in handle_frame, but always
* enough to encode a frame */
sampleframes_per_frame = enc->blocks * enc->subbands;
gst_audio_encoder_set_frame_samples_min (audio_enc, sampleframes_per_frame);
gst_audio_encoder_set_frame_samples_max (audio_enc, sampleframes_per_frame);
gst_audio_encoder_set_frame_max (audio_enc, 0);
static gboolean
sbc_enc_sink_setcaps (GstSbcEnc * enc, GstCaps * caps)
{
GstStructure *structure;
gint rate, channels;
/* FIXME: what to do with left-over samples at the end? can we encode them? */
gst_audio_encoder_set_hard_min (audio_enc, TRUE);
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "rate", &rate))
return FALSE;
if (!gst_structure_get_int (structure, "channels", &channels))
/* and configure encoder based on the output caps we negotiated */
if (enc->rate == 16000)
enc->sbc.frequency = SBC_FREQ_16000;
else if (enc->rate == 32000)
enc->sbc.frequency = SBC_FREQ_32000;
else if (enc->rate == 44100)
enc->sbc.frequency = SBC_FREQ_44100;
else if (enc->rate == 48000)
enc->sbc.frequency = SBC_FREQ_48000;
else
return FALSE;
enc->rate = rate;
enc->channels = channels;
return sbc_enc_negotiate_output_caps (enc, caps);
}
static gboolean
gst_sbc_enc_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstSbcEnc *enc = GST_SBC_ENC (parent);
gboolean ret;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
ret = sbc_enc_sink_setcaps (enc, caps);
break;
}
default:
ret = gst_pad_event_default (pad, parent, event);
break;
}
return ret;
}
/* configure encoder based on output caps */
static gboolean
gst_sbc_enc_fill_sbc_params (GstSbcEnc * enc, GstCaps * caps)
{
if (!gst_caps_is_fixed (caps)) {
GST_DEBUG_OBJECT (enc, "output caps %" GST_PTR_FORMAT " not fixed!", caps);
return FALSE;
}
if (!gst_sbc_util_fill_sbc_params (&enc->sbc, caps))
if (enc->blocks == 4)
enc->sbc.blocks = SBC_BLK_4;
else if (enc->blocks == 8)
enc->sbc.blocks = SBC_BLK_8;
else if (enc->blocks == 12)
enc->sbc.blocks = SBC_BLK_12;
else if (enc->blocks == 16)
enc->sbc.blocks = SBC_BLK_16;
else
return FALSE;
if (enc->rate != 0 && gst_sbc_parse_rate_from_sbc (enc->sbc.frequency)
!= enc->rate)
goto fail;
enc->sbc.subbands = (enc->subbands == 4) ? SBC_SB_4 : SBC_SB_8;
enc->sbc.bitpool = enc->bitpool;
if (enc->channels != 0 && gst_sbc_get_channel_number (enc->sbc.mode)
!= enc->channels)
goto fail;
if (channel_mode == NULL || allocation_method == NULL)
return FALSE;
if (enc->blocks != 0 && gst_sbc_parse_blocks_from_sbc (enc->sbc.blocks)
!= enc->blocks)
goto fail;
if (strcmp (channel_mode, "joint") == 0)
enc->sbc.mode = SBC_MODE_JOINT_STEREO;
else if (strcmp (channel_mode, "stereo") == 0)
enc->sbc.mode = SBC_MODE_STEREO;
else if (strcmp (channel_mode, "dual") == 0)
enc->sbc.mode = SBC_MODE_DUAL_CHANNEL;
else if (strcmp (channel_mode, "mono") == 0)
enc->sbc.mode = SBC_MODE_MONO;
else if (strcmp (channel_mode, "auto") == 0)
enc->sbc.mode = SBC_MODE_JOINT_STEREO;
else
return FALSE;
if (enc->subbands != 0
&& gst_sbc_parse_subbands_from_sbc (enc->sbc.subbands) != enc->subbands)
goto fail;
if (strcmp (allocation_method, "loudness") == 0)
enc->sbc.allocation = SBC_AM_LOUDNESS;
else if (strcmp (allocation_method, "snr") == 0)
enc->sbc.allocation = SBC_AM_SNR;
else
return FALSE;
if (enc->mode != SBC_ENC_DEFAULT_CHANNEL_MODE && enc->sbc.mode != enc->mode)
goto fail;
if (!gst_audio_encoder_set_output_format (audio_enc, output_caps))
return FALSE;
if (enc->allocation != SBC_AM_AUTO && enc->sbc.allocation != enc->allocation)
goto fail;
if (enc->bitpool != SBC_ENC_BITPOOL_AUTO && enc->sbc.bitpool != enc->bitpool)
goto fail;
enc->codesize = sbc_get_codesize (&enc->sbc);
enc->frame_length = sbc_get_frame_length (&enc->sbc);
enc->frame_duration = sbc_get_frame_duration (&enc->sbc) * 1000;
GST_DEBUG_OBJECT (enc, "codesize: %d, frame_length: %d, frame_duration:"
" %d", enc->codesize, enc->frame_length, enc->frame_duration);
return TRUE;
fail:
memset (&enc->sbc, 0, sizeof (sbc_t));
return FALSE;
return gst_audio_encoder_negotiate (audio_enc);
}
static GstFlowReturn
sbc_enc_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
gst_sbc_enc_handle_frame (GstAudioEncoder * audio_enc, GstBuffer * buffer)
{
GstSbcEnc *enc = GST_SBC_ENC (parent);
GstAdapter *adapter = enc->adapter;
GstFlowReturn res = GST_FLOW_OK;
GstSbcEnc *enc = GST_SBC_ENC (audio_enc);
GstMapInfo in_map, out_map;
GstBuffer *outbuf = NULL;
guint samples_per_frame, frames, i = 0;
if (enc->codesize == 0)
goto not_negotiated;
/* no fancy draining */
if (buffer == NULL)
return GST_FLOW_OK;
gst_adapter_push (adapter, buffer);
if (G_UNLIKELY (enc->channels == 0 || enc->blocks == 0 || enc->subbands == 0))
return GST_FLOW_NOT_NEGOTIATED;
while (gst_adapter_available (adapter) >= enc->codesize) {
GstMapInfo out_map;
GstBuffer *outbuf;
const guint8 *data;
gint consumed;
samples_per_frame = enc->channels * enc->blocks * enc->subbands;
if (!gst_buffer_map (buffer, &in_map, GST_MAP_READ))
goto map_failed;
frames = in_map.size / (samples_per_frame * sizeof (gint16));
GST_LOG_OBJECT (enc,
"encoding %" G_GSIZE_FORMAT " samples into %u SBC frames",
in_map.size / (enc->channels * sizeof (gint16)), frames);
if (frames > 0) {
gsize frame_len;
frame_len = sbc_get_frame_length (&enc->sbc);
outbuf = gst_audio_encoder_allocate_output_buffer (audio_enc,
frames * frame_len);
if (outbuf == NULL)
goto no_buffer;
outbuf = gst_buffer_new_and_alloc (enc->frame_length);
gst_buffer_map (outbuf, &out_map, GST_MAP_WRITE);
data = gst_adapter_map (adapter, enc->codesize);
for (i = 0; i < frames; ++i) {
gssize ret, written = 0;
consumed = sbc_encode (&enc->sbc, (gpointer) data,
enc->codesize, out_map.data, out_map.size, NULL);
ret = sbc_encode (&enc->sbc, in_map.data + (i * samples_per_frame * 2),
samples_per_frame * 2, out_map.data + (i * frame_len), frame_len,
&written);
if (ret < 0 || written != frame_len) {
GST_WARNING_OBJECT (enc, "encoding error, ret = %" G_GSSIZE_FORMAT ", "
"written = %" G_GSSIZE_FORMAT, ret, written);
break;
}
}
gst_adapter_unmap (adapter);
gst_buffer_unmap (outbuf, &out_map);
if (consumed <= 0) {
GST_DEBUG_OBJECT (enc, "consumed < 0, codesize: %d", enc->codesize);
gst_buffer_unref (outbuf);
break;
}
gst_adapter_flush (adapter, consumed);
/* FIXME: this is not right if we don't have a 1:1 mapping of
* input and output data */
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
/* we have only 1 frame */
GST_BUFFER_DURATION (outbuf) = enc->frame_duration;
res = gst_pad_push (enc->srcpad, outbuf);
if (res != GST_FLOW_OK)
break;
if (i > 0)
gst_buffer_set_size (outbuf, i * frame_len);
else
gst_buffer_replace (&outbuf, NULL);
}
return res;
done:
not_negotiated:
gst_buffer_unmap (buffer, &in_map);
return gst_audio_encoder_finish_frame (audio_enc, outbuf,
i * (samples_per_frame / enc->channels));
/* ERRORS */
no_buffer:
{
GST_ERROR_OBJECT (enc, "output caps not negotiated yet");
gst_buffer_unref (buffer);
return GST_FLOW_NOT_NEGOTIATED;
GST_ERROR_OBJECT (enc, "could not allocate output buffer");
goto done;
}
map_failed:
{
GST_ERROR_OBJECT (enc, "could not map input buffer");
goto done;
}
}
static GstStateChangeReturn
sbc_enc_change_state (GstElement * element, GstStateChange transition)
static gboolean
gst_sbc_enc_start (GstAudioEncoder * audio_enc)
{
GstSbcEnc *enc = GST_SBC_ENC (element);
GstSbcEnc *enc = GST_SBC_ENC (audio_enc);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_DEBUG ("Setup subband codec");
sbc_init (&enc->sbc, 0);
break;
GST_INFO_OBJECT (enc, "Setup subband codec");
sbc_init (&enc->sbc, 0);
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_DEBUG ("Finish subband codec");
sbc_finish (&enc->sbc);
break;
default:
break;
}
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return TRUE;
}
static void
gst_sbc_enc_finalize (GObject * object)
static gboolean
gst_sbc_enc_stop (GstAudioEncoder * audio_enc)
{
GstSbcEnc *enc = GST_SBC_ENC (object);
GstSbcEnc *enc = GST_SBC_ENC (audio_enc);
if (enc->adapter != NULL) {
g_object_unref (enc->adapter);
enc->adapter = NULL;
}
GST_INFO_OBJECT (enc, "Finish subband codec");
sbc_finish (&enc->sbc);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
enc->subbands = 0;
enc->blocks = 0;
enc->rate = 0;
enc->channels = 0;
enc->bitpool = 0;
static void
gst_sbc_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstSbcEnc *enc = GST_SBC_ENC (object);
/* changes to those properties will only happen on the next caps
* negotiation */
switch (prop_id) {
case PROP_MODE:
enc->mode = g_value_get_enum (value);
break;
case PROP_ALLOCATION:
enc->allocation = g_value_get_enum (value);
break;
case PROP_BLOCKS:
enc->blocks = g_value_get_enum (value);
break;
case PROP_SUBBANDS:
enc->subbands = g_value_get_enum (value);
break;
case PROP_BITPOOL:
enc->bitpool = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_sbc_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstSbcEnc *enc = GST_SBC_ENC (object);
switch (prop_id) {
case PROP_MODE:
g_value_set_enum (value, enc->mode);
break;
case PROP_ALLOCATION:
g_value_set_enum (value, enc->allocation);
break;
case PROP_BLOCKS:
g_value_set_enum (value, enc->blocks);
break;
case PROP_SUBBANDS:
g_value_set_enum (value, enc->subbands);
break;
case PROP_BITPOOL:
g_value_set_int (value, enc->bitpool);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
return TRUE;
}
static void
gst_sbc_enc_class_init (GstSbcEncClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstAudioEncoderClass *encoder_class = GST_AUDIO_ENCODER_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->set_property = gst_sbc_enc_set_property;
object_class->get_property = gst_sbc_enc_get_property;
object_class->finalize = gst_sbc_enc_finalize;
element_class->change_state = GST_DEBUG_FUNCPTR (sbc_enc_change_state);
g_object_class_install_property (object_class, PROP_MODE,
g_param_spec_enum ("channel-mode", "Channel Mode",
"Channel mode", GST_TYPE_SBC_CHANNEL_MODE,
SBC_ENC_DEFAULT_CHANNEL_MODE, G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_ALLOCATION,
g_param_spec_enum ("allocation-method", "Allocation Method",
"Allocation method", GST_TYPE_SBC_ALLOCATION_METHOD,
SBC_ENC_DEFAULT_ALLOCATION_METHOD, G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_BLOCKS,
g_param_spec_enum ("blocks", "Blocks",
"Blocks", GST_TYPE_SBC_BLOCKS,
SBC_ENC_DEFAULT_BLOCKS, G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_SUBBANDS,
g_param_spec_enum ("subbands", "Sub bands",
"Number of sub bands", GST_TYPE_SBC_SUBBANDS,
SBC_ENC_DEFAULT_SUB_BANDS, G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_BITPOOL,
g_param_spec_int ("bitpool", "Bitpool",
"Bitpool (use 1 for automatic selection)",
SBC_ENC_BITPOOL_AUTO, SBC_ENC_BITPOOL_MAX,
SBC_ENC_BITPOOL_AUTO, G_PARAM_READWRITE));
encoder_class->start = GST_DEBUG_FUNCPTR (gst_sbc_enc_start);
encoder_class->stop = GST_DEBUG_FUNCPTR (gst_sbc_enc_stop);
encoder_class->set_format = GST_DEBUG_FUNCPTR (gst_sbc_enc_set_format);
encoder_class->handle_frame = GST_DEBUG_FUNCPTR (gst_sbc_enc_handle_frame);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sbc_enc_sink_factory));
@ -609,38 +354,9 @@ gst_sbc_enc_class_init (GstSbcEncClass * klass)
static void
gst_sbc_enc_init (GstSbcEnc * self)
{
self->sinkpad =
gst_pad_new_from_static_template (&sbc_enc_sink_factory, "sink");
gst_pad_set_event_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_sbc_enc_sink_event));
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
self->srcpad = gst_pad_new_from_static_template (&sbc_enc_src_factory, "src");
#if 0
gst_pad_set_getcaps_function (self->srcpad,
GST_DEBUG_FUNCPTR (sbc_enc_src_getcaps));
#endif
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
gst_pad_set_chain_function (self->sinkpad, GST_DEBUG_FUNCPTR (sbc_enc_chain));
self->subbands = SBC_ENC_DEFAULT_SUB_BANDS;
self->blocks = SBC_ENC_DEFAULT_BLOCKS;
self->mode = SBC_ENC_DEFAULT_CHANNEL_MODE;
self->allocation = SBC_ENC_DEFAULT_ALLOCATION_METHOD;
self->rate = SBC_ENC_DEFAULT_RATE;
self->channels = SBC_ENC_DEFAULT_CHANNELS;
self->bitpool = SBC_ENC_BITPOOL_AUTO;
self->frame_length = 0;
self->frame_duration = 0;
self->adapter = gst_adapter_new ();
}
gboolean
gst_sbc_enc_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "sbcenc",
GST_RANK_NONE, GST_TYPE_SBC_ENC);
self->subbands = 0;
self->blocks = 0;
self->rate = 0;
self->channels = 0;
self->bitpool = 0;
}

40
ext/sbc/gstsbcenc.h
View file

@ -1,9 +1,6 @@
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
/* GStreamer SBC audio encoder
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
* Copyright (C) 2013 Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -22,7 +19,7 @@
*/
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/audio/audio.h>
#include <sbc/sbc.h>
@ -43,33 +40,22 @@ typedef struct _GstSbcEnc GstSbcEnc;
typedef struct _GstSbcEncClass GstSbcEncClass;
struct _GstSbcEnc {
GstElement element;
GstAudioEncoder audio_encoder;
GstPad *sinkpad;
GstPad *srcpad;
GstAdapter *adapter;
/*< private >*/
gint rate;
gint channels;
gint blocks;
gint subbands;
gint bitpool;
gint rate;
gint channels;
gint mode;
gint blocks;
gint allocation;
gint subbands;
gint bitpool;
guint codesize;
gint frame_length;
gint frame_duration;
sbc_t sbc;
sbc_t sbc;
};
struct _GstSbcEncClass {
GstElementClass parent_class;
GstAudioEncoderClass audio_encoder_class;
};
GType gst_sbc_enc_get_type(void);
gboolean gst_sbc_enc_plugin_init(GstPlugin *plugin);
GType gst_sbc_enc_get_type (void);
G_END_DECLS

400
ext/sbc/gstsbcutil.c
View file

@ -1,400 +0,0 @@
/* SBC audio utilities
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <math.h>
#include "gstsbcutil.h"
/*
* Selects one rate from a list of possible rates
* TODO - use a better approach to this (it is selecting the last element)
*/
gint
gst_sbc_select_rate_from_list (const GValue * value)
{
guint size = gst_value_list_get_size (value);
return g_value_get_int (gst_value_list_get_value (value, size - 1));
}
/*
* Selects one number of channels option from a range of possible numbers
* TODO - use a better approach to this (it is selecting the maximum value)
*/
gint
gst_sbc_select_channels_from_range (const GValue * value)
{
return gst_value_get_int_range_max (value);
}
/*
* Selects one number of blocks from a list of possible blocks
* TODO - use a better approach to this (it is selecting the last element)
*/
gint
gst_sbc_select_blocks_from_list (const GValue * value)
{
guint size = gst_value_list_get_size (value);
return g_value_get_int (gst_value_list_get_value (value, size - 1));
}
/*
* Selects one number of subbands from a list
* TODO - use a better approach to this (it is selecting the last element)
*/
gint
gst_sbc_select_subbands_from_list (const GValue * value)
{
guint size = gst_value_list_get_size (value);
return g_value_get_int (gst_value_list_get_value (value, size - 1));
}
/*
* Selects one bitpool option from a range
* TODO - use a better approach to this (it is selecting the maximum value)
*/
gint
gst_sbc_select_bitpool_from_range (const GValue * value)
{
return gst_value_get_int_range_max (value);
}
/*
* Selects one allocation mode from the ones on the list
* TODO - use a better approach
*/
const gchar *
gst_sbc_get_allocation_from_list (const GValue * value)
{
guint size = gst_value_list_get_size (value);
return g_value_get_string (gst_value_list_get_value (value, size - 1));
}
/*
* Selects one mode from the ones on the list
*/
const gchar *
gst_sbc_get_mode_from_list (const GValue * list, gint channels)
{
unsigned int i;
const GValue *value;
const gchar *aux;
gboolean joint, stereo, dual, mono;
guint size = gst_value_list_get_size (list);
joint = stereo = dual = mono = FALSE;
for (i = 0; i < size; i++) {
value = gst_value_list_get_value (list, i);
aux = g_value_get_string (value);
if (strcmp ("joint", aux) == 0)
joint = TRUE;
else if (strcmp ("stereo", aux) == 0)
stereo = TRUE;
else if (strcmp ("dual", aux) == 0)
dual = TRUE;
else if (strcmp ("mono", aux) == 0)
mono = TRUE;
}
if (channels == 1 && mono)
return "mono";
else if (channels == 2) {
if (joint)
return "joint";
else if (stereo)
return "stereo";
else if (dual)
return "dual";
}
return NULL;
}
gint
gst_sbc_parse_rate_from_sbc (gint frequency)
{
switch (frequency) {
case SBC_FREQ_16000:
return 16000;
case SBC_FREQ_32000:
return 32000;
case SBC_FREQ_44100:
return 44100;
case SBC_FREQ_48000:
return 48000;
default:
return 0;
}
}
gint
gst_sbc_parse_rate_to_sbc (gint rate)
{
switch (rate) {
case 16000:
return SBC_FREQ_16000;
case 32000:
return SBC_FREQ_32000;
case 44100:
return SBC_FREQ_44100;
case 48000:
return SBC_FREQ_48000;
default:
return -1;
}
}
gint
gst_sbc_get_channel_number (gint mode)
{
switch (mode) {
case SBC_MODE_JOINT_STEREO:
case SBC_MODE_STEREO:
case SBC_MODE_DUAL_CHANNEL:
return 2;
case SBC_MODE_MONO:
return 1;
default:
return 0;
}
}
gint
gst_sbc_parse_subbands_from_sbc (gint subbands)
{
switch (subbands) {
case SBC_SB_4:
return 4;
case SBC_SB_8:
return 8;
default:
return 0;
}
}
gint
gst_sbc_parse_subbands_to_sbc (gint subbands)
{
switch (subbands) {
case 4:
return SBC_SB_4;
case 8:
return SBC_SB_8;
default:
return -1;
}
}
gint
gst_sbc_parse_blocks_from_sbc (gint blocks)
{
switch (blocks) {
case SBC_BLK_4:
return 4;
case SBC_BLK_8:
return 8;
case SBC_BLK_12:
return 12;
case SBC_BLK_16:
return 16;
default:
return 0;
}
}
gint
gst_sbc_parse_blocks_to_sbc (gint blocks)
{
switch (blocks) {
case 4:
return SBC_BLK_4;
case 8:
return SBC_BLK_8;
case 12:
return SBC_BLK_12;
case 16:
return SBC_BLK_16;
default:
return -1;
}
}
const gchar *
gst_sbc_parse_mode_from_sbc (gint mode)
{
switch (mode) {
case SBC_MODE_MONO:
return "mono";
case SBC_MODE_DUAL_CHANNEL:
return "dual";
case SBC_MODE_STEREO:
return "stereo";
case SBC_MODE_JOINT_STEREO:
case SBC_MODE_AUTO:
return "joint";
default:
return NULL;
}
}
gint
gst_sbc_parse_mode_to_sbc (const gchar * mode)
{
if (g_ascii_strcasecmp (mode, "joint") == 0)
return SBC_MODE_JOINT_STEREO;
else if (g_ascii_strcasecmp (mode, "stereo") == 0)
return SBC_MODE_STEREO;
else if (g_ascii_strcasecmp (mode, "dual") == 0)
return SBC_MODE_DUAL_CHANNEL;
else if (g_ascii_strcasecmp (mode, "mono") == 0)
return SBC_MODE_MONO;
else if (g_ascii_strcasecmp (mode, "auto") == 0)
return SBC_MODE_JOINT_STEREO;
else
return -1;
}
const gchar *
gst_sbc_parse_allocation_from_sbc (gint alloc)
{
switch (alloc) {
case SBC_AM_LOUDNESS:
return "loudness";
case SBC_AM_SNR:
return "snr";
case SBC_AM_AUTO:
return "loudness";
default:
return NULL;
}
}
gint
gst_sbc_parse_allocation_to_sbc (const gchar * allocation)
{
if (g_ascii_strcasecmp (allocation, "loudness") == 0)
return SBC_AM_LOUDNESS;
else if (g_ascii_strcasecmp (allocation, "snr") == 0)
return SBC_AM_SNR;
else
return SBC_AM_LOUDNESS;
}
GstCaps *
gst_sbc_parse_caps_from_sbc (sbc_t * sbc)
{
GstCaps *caps;
const gchar *mode_str;
const gchar *allocation_str;
mode_str = gst_sbc_parse_mode_from_sbc (sbc->mode);
allocation_str = gst_sbc_parse_allocation_from_sbc (sbc->allocation);
caps = gst_caps_new_simple ("audio/x-sbc",
"rate", G_TYPE_INT,
gst_sbc_parse_rate_from_sbc (sbc->frequency),
"channels", G_TYPE_INT,
gst_sbc_get_channel_number (sbc->mode),
"channel-mode", G_TYPE_STRING, mode_str,
"subbands", G_TYPE_INT,
gst_sbc_parse_subbands_from_sbc (sbc->subbands),
"blocks", G_TYPE_INT,
gst_sbc_parse_blocks_from_sbc (sbc->blocks),
"allocation-method", G_TYPE_STRING, allocation_str,
"bitpool", G_TYPE_INT, sbc->bitpool, NULL);
return caps;
}
/* FIXME: this function is not needed, just use gst_structure_set() */
/**
* Sets the int field_value to the param "field" on the structure.
* value is used to do the operation, it must be a uninitialized (zero-filled)
* GValue, it will be left unitialized at the end of the function.
*/
void
gst_sbc_util_set_structure_int_param (GstStructure * structure,
const gchar * field, gint field_value, GValue * value)
{
value = g_value_init (value, G_TYPE_INT);
g_value_set_int (value, field_value);
gst_structure_set_value (structure, field, value);
g_value_unset (value);
}
/**
* Sets the string field_value to the param "field" on the structure.
* value is used to do the operation, it must be a uninitialized (zero-filled)
* GValue, it will be left unitialized at the end of the function.
*/
void
gst_sbc_util_set_structure_string_param (GstStructure * structure,
const gchar * field, const gchar * field_value, GValue * value)
{
value = g_value_init (value, G_TYPE_STRING);
g_value_set_string (value, field_value);
gst_structure_set_value (structure, field, value);
g_value_unset (value);
}
gboolean
gst_sbc_util_fill_sbc_params (sbc_t * sbc, GstCaps * caps)
{
GstStructure *structure;
gint rate, channels, subbands, blocks, bitpool;
const gchar *mode;
const gchar *allocation;
g_assert (gst_caps_is_fixed (caps));
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "rate", &rate))
return FALSE;
if (!gst_structure_get_int (structure, "channels", &channels))
return FALSE;
if (!gst_structure_get_int (structure, "subbands", &subbands))
return FALSE;
if (!gst_structure_get_int (structure, "blocks", &blocks))
return FALSE;
if (!gst_structure_get_int (structure, "bitpool", &bitpool))
return FALSE;
if (!(mode = gst_structure_get_string (structure, "channel-mode")))
return FALSE;
if (!(allocation = gst_structure_get_string (structure, "allocation-method")))
return FALSE;
if (channels == 1 && strcmp (mode, "mono") != 0)
return FALSE;
sbc->frequency = gst_sbc_parse_rate_to_sbc (rate);
sbc->blocks = gst_sbc_parse_blocks_to_sbc (blocks);
sbc->subbands = gst_sbc_parse_subbands_to_sbc (subbands);
sbc->bitpool = bitpool;
sbc->mode = gst_sbc_parse_mode_to_sbc (mode);
sbc->allocation = gst_sbc_parse_allocation_to_sbc (allocation);
return TRUE;
}

71
ext/sbc/gstsbcutil.h
View file

@ -1,71 +0,0 @@
/* SBC audio utilities
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <gst/gst.h>
#include <sbc/sbc.h>
#include <string.h>
#define SBC_AM_AUTO 0x02
#define SBC_MODE_AUTO 0x04
gint gst_sbc_select_rate_from_list(const GValue *value);
gint gst_sbc_select_channels_from_range(const GValue *value);
gint gst_sbc_select_blocks_from_list(const GValue *value);
gint gst_sbc_select_subbands_from_list(const GValue *value);
gint gst_sbc_select_bitpool_from_range(const GValue *value);
const gchar *gst_sbc_get_allocation_from_list(const GValue *value);
const gchar *gst_sbc_get_mode_from_list(const GValue *value, gint channels);
gint gst_sbc_get_channel_number(gint mode);
gint gst_sbc_parse_rate_from_sbc(gint frequency);
gint gst_sbc_parse_rate_to_sbc(gint rate);
gint gst_sbc_parse_subbands_from_sbc(gint subbands);
gint gst_sbc_parse_subbands_to_sbc(gint subbands);
gint gst_sbc_parse_blocks_from_sbc(gint blocks);
gint gst_sbc_parse_blocks_to_sbc(gint blocks);
const gchar *gst_sbc_parse_mode_from_sbc(gint mode);
gint gst_sbc_parse_mode_to_sbc(const gchar *mode);
const gchar *gst_sbc_parse_allocation_from_sbc(gint alloc);
gint gst_sbc_parse_allocation_to_sbc(const gchar *allocation);
GstCaps *gst_sbc_parse_caps_from_sbc(sbc_t *sbc);
void gst_sbc_util_set_structure_int_param(GstStructure *structure,
const gchar *field, gint field_value,
GValue *value);
void gst_sbc_util_set_structure_string_param(GstStructure *structure,
const gchar *field, const gchar *field_value,
GValue *value);
gboolean gst_sbc_util_fill_sbc_params(sbc_t *sbc, GstCaps *caps);