diff options
Diffstat (limited to 'audio/gstsbcenc.c')
| -rw-r--r-- | audio/gstsbcenc.c | 602 |
1 files changed, 602 insertions, 0 deletions
diff --git a/audio/gstsbcenc.c b/audio/gstsbcenc.c new file mode 100644 index 00000000..65e3da5b --- /dev/null +++ b/audio/gstsbcenc.c @@ -0,0 +1,602 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2004-2008 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 "gstsbcenc.h" +#include "gstsbcutil.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) LITTLE_ENDIAN, " + "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); +} + + |