/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2009 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 <string.h>
#include "gstsbcutil.h"
#include "gstsbcenc.h"
#define SBC_ENC_DEFAULT_MODE SBC_MODE_AUTO
#define SBC_ENC_DEFAULT_BLOCKS 0
#define SBC_ENC_DEFAULT_SUB_BANDS 0
#define SBC_ENC_DEFAULT_ALLOCATION 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_MODE (gst_sbc_mode_get_type())
static GType gst_sbc_mode_get_type(void)
{
static GType sbc_mode_type = 0;
static GEnumValue sbc_modes[] = {
{ SBC_MODE_MONO, "Mono", "mono" },
{ SBC_MODE_DUAL_CHANNEL, "Dual Channel", "dual" },
{ SBC_MODE_STEREO, "Stereo", "stereo"},
{ SBC_MODE_JOINT_STEREO, "Joint Stereo", "joint" },
{ SBC_MODE_AUTO, "Auto", "auto" },
{ -1, NULL, NULL}
};
if (!sbc_mode_type)
sbc_mode_type = g_enum_register_static("GstSbcMode", sbc_modes);
return sbc_mode_type;
}
#define GST_TYPE_SBC_ALLOCATION (gst_sbc_allocation_get_type())
static GType gst_sbc_allocation_get_type(void)
{
static GType sbc_allocation_type = 0;
static GEnumValue sbc_allocations[] = {
{ SBC_AM_LOUDNESS, "Loudness", "loudness" },
{ SBC_AM_SNR, "SNR", "snr" },
{ SBC_AM_AUTO, "Auto", "auto" },
{ -1, NULL, NULL}
};
if (!sbc_allocation_type)
sbc_allocation_type = g_enum_register_static(
"GstSbcAllocation", sbc_allocations);
return sbc_allocation_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
};
GST_BOILERPLATE(GstSbcEnc, gst_sbc_enc, GstElement, GST_TYPE_ELEMENT);
static const GstElementDetails sbc_enc_details =
GST_ELEMENT_DETAILS("Bluetooth SBC encoder",
"Codec/Encoder/Audio",
"Encode a SBC audio stream",
"Marcel Holtmann <marcel@holtmann.org>");
static GstStaticPadTemplate sbc_enc_sink_factory =
GST_STATIC_PAD_TEMPLATE("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
GST_STATIC_CAPS("audio/x-raw-int, "
"rate = (int) { 16000, 32000, 44100, 48000 }, "
"channels = (int) [ 1, 2 ], "
"endianness = (int) BYTE_ORDER, "
"signed = (boolean) true, "
"width = (int) 16, "
"depth = (int) 16"));
static GstStaticPadTemplate sbc_enc_src_factory =
GST_STATIC_PAD_TEMPLATE("src", GST_PAD_SRC, GST_PAD_ALWAYS,
GST_STATIC_CAPS("audio/x-sbc, "
"rate = (int) { 16000, 32000, 44100, 48000 }, "
"channels = (int) [ 1, 2 ], "
"mode = (string) { \"mono\", \"dual\", \"stereo\", \"joint\" }, "
"blocks = (int) { 4, 8, 12, 16 }, "
"subbands = (int) { 4, 8 }, "
"allocation = (string) { \"snr\", \"loudness\" }, "
"bitpool = (int) [ " SBC_ENC_BITPOOL_MIN_STR
", " SBC_ENC_BITPOOL_MAX_STR " ]"));
gboolean gst_sbc_enc_fill_sbc_params(GstSbcEnc *enc, GstCaps *caps);
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);
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_MODE) {
enum_class = g_type_class_ref(GST_TYPE_SBC_MODE);
enum_value = g_enum_get_value(enum_class, enc->mode);
gst_sbc_util_set_structure_string_param(structure, "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);
enum_value = g_enum_get_value(enum_class, enc->allocation);
gst_sbc_util_set_structure_string_param(structure, "allocation",
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 sbc_enc_src_setcaps(GstPad *pad, GstCaps *caps)
{
GstSbcEnc *enc = GST_SBC_ENC(GST_PAD_PARENT(pad));
GST_LOG_OBJECT(enc, "setting srcpad caps");
return gst_sbc_enc_fill_sbc_params(enc, caps);
}
static GstCaps *sbc_enc_src_caps_fixate(GstSbcEnc *enc, GstCaps *caps)
{
gchar *error_message = NULL;
GstCaps *result;
result = gst_sbc_util_caps_fixate(caps, &error_message);
if (!result) {
GST_WARNING_OBJECT(enc, "Invalid input caps caused parsing "
"error: %s", error_message);
g_free(error_message);
return NULL;
}
return result;
}
static GstCaps *sbc_enc_get_fixed_srcpad_caps(GstSbcEnc *enc)
{
GstCaps *caps;
gboolean res = TRUE;
GstCaps *result_caps = NULL;
caps = gst_pad_get_allowed_caps(enc->srcpad);
if (caps == NULL)
caps = sbc_enc_src_getcaps(enc->srcpad);
if (caps == GST_CAPS_NONE || gst_caps_is_empty(caps)) {
res = FALSE;
goto done;
}
result_caps = sbc_enc_src_caps_fixate(enc, caps);
done:
gst_caps_unref(caps);
if (!res)
return NULL;
return result_caps;
}
static gboolean sbc_enc_sink_setcaps(GstPad *pad, GstCaps *caps)
{
GstSbcEnc *enc;
GstStructure *structure;
GstCaps *src_caps;
gint rate, channels;
gboolean res;
enc = GST_SBC_ENC(GST_PAD_PARENT(pad));
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;
enc->rate = rate;
enc->channels = channels;
src_caps = sbc_enc_get_fixed_srcpad_caps(enc);
if (!src_caps)
return FALSE;
res = gst_pad_set_caps(enc->srcpad, src_caps);
gst_caps_unref(src_caps);
return res;
}
gboolean gst_sbc_enc_fill_sbc_params(GstSbcEnc *enc, GstCaps *caps)
{
if (!gst_caps_is_fixed(caps)) {
GST_DEBUG_OBJECT(enc, "didn't receive fixed caps, "
"returning false");
return FALSE;
}
if (!gst_sbc_util_fill_sbc_params(&enc->sbc, caps))
return FALSE;
if (enc->rate != 0 && gst_sbc_parse_rate_from_sbc(enc->sbc.frequency)
!= enc->rate)
goto fail;
if (enc->channels != 0 && gst_sbc_get_channel_number(enc->sbc.mode)
!= enc->channels)
goto fail;
if (enc->blocks != 0 && gst_sbc_parse_blocks_from_sbc(enc->sbc.blocks)
!= enc->blocks)
goto fail;
if (enc->subbands != 0 && gst_sbc_parse_subbands_from_sbc(
enc->sbc.subbands) != enc->subbands)
goto fail;
if (enc->mode != SBC_ENC_DEFAULT_MODE && enc->sbc.mode != enc->mode)
goto fail;
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);
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;
}
static GstFlowReturn 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;
gst_adapter_push(adapter, buffer);
while (gst_adapter_available(adapter) >= enc->codesize &&
res == GST_FLOW_OK) {
GstBuffer *output;
GstCaps *caps;
const guint8 *data;
gint consumed;
caps = GST_PAD_CAPS(enc->srcpad);
res = gst_pad_alloc_buffer_and_set_caps(enc->srcpad,
GST_BUFFER_OFFSET_NONE,
enc->frame_length, caps,
&output);
if (res != GST_FLOW_OK)
goto done;
data = gst_adapter_peek(adapter, enc->codesize);
consumed = sbc_encode(&enc->sbc, (gpointer) data,
enc->codesize,
GST_BUFFER_DATA(output),
GST_BUFFER_SIZE(output), NULL);
if (consumed <= 0) {
GST_DEBUG_OBJECT(enc, "comsumed < 0, codesize: %d",
enc->codesize);
break;
}
gst_adapter_flush(adapter, consumed);
GST_BUFFER_TIMESTAMP(output) = GST_BUFFER_TIMESTAMP(buffer);
/* we have only 1 frame */
GST_BUFFER_DURATION(output) = enc->frame_duration;
res = gst_pad_push(enc->srcpad, output);
if (res != GST_FLOW_OK)
goto done;
}
done:
gst_object_unref(enc);
return res;
}
static GstStateChangeReturn sbc_enc_change_state(GstElement *element,
GstStateChange transition)
{
GstSbcEnc *enc = GST_SBC_ENC(element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_DEBUG("Setup subband codec");
sbc_init(&enc->sbc, 0);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
GST_DEBUG("Finish subband codec");
sbc_finish(&enc->sbc);
break;
default:
break;
}
return parent_class->change_state(element, transition);
}
static void gst_sbc_enc_dispose(GObject *object)
{
GstSbcEnc *enc = GST_SBC_ENC(object);
if (enc->adapter != NULL)
g_object_unref(G_OBJECT(enc->adapter));
enc->adapter = NULL;
}
static void gst_sbc_enc_base_init(gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS(g_class);
gst_element_class_add_pad_template(element_class,
gst_static_pad_template_get(&sbc_enc_sink_factory));
gst_element_class_add_pad_template(element_class,
gst_static_pad_template_get(&sbc_enc_src_factory));
gst_element_class_set_details(element_class, &sbc_enc_details);
}
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;
}
}
static void gst_sbc_enc_class_init(GstSbcEncClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS(klass);
GstElementClass *element_class = GST_ELEMENT_CLASS(klass);
parent_class = g_type_class_peek_parent(klass);
object_class->set_property = GST_DEBUG_FUNCPTR(gst_sbc_enc_set_property);
object_class->get_property = GST_DEBUG_FUNCPTR(gst_sbc_enc_get_property);
object_class->dispose = GST_DEBUG_FUNCPTR(gst_sbc_enc_dispose);
element_class->change_state = GST_DEBUG_FUNCPTR(sbc_enc_change_state);
g_object_class_install_property(object_class, PROP_MODE,
g_param_spec_enum("mode", "Mode",
"Encoding mode", GST_TYPE_SBC_MODE,
SBC_ENC_DEFAULT_MODE, G_PARAM_READWRITE));
g_object_class_install_property(object_class, PROP_ALLOCATION,
g_param_spec_enum("allocation", "Allocation",
"Allocation method", GST_TYPE_SBC_ALLOCATION,
SBC_ENC_DEFAULT_ALLOCATION, 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));
GST_DEBUG_CATEGORY_INIT(sbc_enc_debug, "sbcenc", 0,
"SBC encoding element");
}
static void gst_sbc_enc_init(GstSbcEnc *self, GstSbcEncClass *klass)
{
self->sinkpad = gst_pad_new_from_static_template(
&sbc_enc_sink_factory, "sink");
gst_pad_set_setcaps_function(self->sinkpad,
GST_DEBUG_FUNCPTR(sbc_enc_sink_setcaps));
gst_element_add_pad(GST_ELEMENT(self), self->sinkpad);
self->srcpad = gst_pad_new_from_static_template(
&sbc_enc_src_factory, "src");
gst_pad_set_getcaps_function(self->srcpad,
GST_DEBUG_FUNCPTR(sbc_enc_src_getcaps));
gst_pad_set_setcaps_function(self->srcpad,
GST_DEBUG_FUNCPTR(sbc_enc_src_setcaps));
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_MODE;
self->allocation = SBC_ENC_DEFAULT_ALLOCATION;
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);
}