diff options
Diffstat (limited to 'gst/law')
| -rw-r--r-- | gst/law/Makefile.am | 40 | ||||
| -rw-r--r-- | gst/law/Makefile.in | 894 | ||||
| -rw-r--r-- | gst/law/alaw-decode.c | 344 | ||||
| -rw-r--r-- | gst/law/alaw-decode.h | 58 | ||||
| -rw-r--r-- | gst/law/alaw-encode.c | 524 | ||||
| -rw-r--r-- | gst/law/alaw-encode.h | 59 | ||||
| -rw-r--r-- | gst/law/alaw.c | 77 | ||||
| -rw-r--r-- | gst/law/mulaw-conversion.c | 118 | ||||
| -rw-r--r-- | gst/law/mulaw-conversion.h | 12 | ||||
| -rw-r--r-- | gst/law/mulaw-decode.c | 307 | ||||
| -rw-r--r-- | gst/law/mulaw-decode.h | 58 | ||||
| -rw-r--r-- | gst/law/mulaw-encode.c | 297 | ||||
| -rw-r--r-- | gst/law/mulaw-encode.h | 59 | ||||
| -rw-r--r-- | gst/law/mulaw.c | 75 |
14 files changed, 2922 insertions, 0 deletions
diff --git a/gst/law/Makefile.am b/gst/law/Makefile.am new file mode 100644 index 0000000..16bff25 --- /dev/null +++ b/gst/law/Makefile.am @@ -0,0 +1,40 @@ +plugin_LTLIBRARIES = libgstalaw.la libgstmulaw.la + +libgstalaw_la_SOURCES = alaw-encode.c alaw-decode.c alaw.c +libgstalaw_la_CFLAGS = $(GST_CFLAGS) +libgstalaw_la_LIBADD = $(GST_LIBS) +libgstalaw_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) +libgstalaw_la_LIBTOOLFLAGS = --tag=disable-static + +libgstmulaw_la_SOURCES = mulaw-encode.c mulaw-conversion.c mulaw-decode.c mulaw.c +libgstmulaw_la_CFLAGS = $(GST_CFLAGS) +libgstmulaw_la_LIBADD = $(GST_LIBS) +libgstmulaw_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) +libgstmulaw_la_LIBTOOLFLAGS = --tag=disable-static + +noinst_HEADERS = mulaw-conversion.h alaw-encode.h alaw-decode.h mulaw-encode.h mulaw-decode.h + +Android.mk: Makefile.am $(BUILT_SOURCES) + androgenizer \ + -:PROJECT libgstalaw -:SHARED libgstalaw \ + -:TAGS eng debug \ + -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \ + -:SOURCES $(libgstalaw_la_SOURCES) \ + $(nodist_libgstalaw_la_SOURCES) \ + -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstalaw_la_CFLAGS) \ + -:LDFLAGS $(libgstalaw_la_LDFLAGS) \ + $(libgstalaw_la_LIBADD) \ + -ldl \ + -:PASSTHROUGH LOCAL_ARM_MODE:=arm \ + LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \ + -:SHARED libgstmulaw \ + -:TAGS eng debug \ + -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \ + -:SOURCES $(libgstmulaw_la_SOURCES) \ + -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstmulaw_la_CFLAGS) \ + -:LDFLAGS $(libgstmulaw_la_LDFLAGS) \ + $(libgstmulaw_la_LIBADD) \ + -ldl \ + -:PASSTHROUGH LOCAL_ARM_MODE:=arm \ + LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \ + > $@ diff --git a/gst/law/Makefile.in b/gst/law/Makefile.in new file mode 100644 index 0000000..dff15f8 --- /dev/null +++ b/gst/law/Makefile.in @@ -0,0 +1,894 @@ +# Makefile.in generated by automake 1.11.3 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 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maintainer-clean-generic mostlyclean mostlyclean-compile \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags uninstall uninstall-am uninstall-pluginLTLIBRARIES + + +Android.mk: Makefile.am $(BUILT_SOURCES) + androgenizer \ + -:PROJECT libgstalaw -:SHARED libgstalaw \ + -:TAGS eng debug \ + -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \ + -:SOURCES $(libgstalaw_la_SOURCES) \ + $(nodist_libgstalaw_la_SOURCES) \ + -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstalaw_la_CFLAGS) \ + -:LDFLAGS $(libgstalaw_la_LDFLAGS) \ + $(libgstalaw_la_LIBADD) \ + -ldl \ + -:PASSTHROUGH LOCAL_ARM_MODE:=arm \ + LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \ + -:SHARED libgstmulaw \ + -:TAGS eng debug \ + -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \ + -:SOURCES $(libgstmulaw_la_SOURCES) \ + -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstmulaw_la_CFLAGS) \ + -:LDFLAGS $(libgstmulaw_la_LDFLAGS) \ + $(libgstmulaw_la_LIBADD) \ + -ldl \ + -:PASSTHROUGH LOCAL_ARM_MODE:=arm \ + LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \ + > $@ + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/gst/law/alaw-decode.c b/gst/law/alaw-decode.c new file mode 100644 index 0000000..2fa6a5d --- /dev/null +++ b/gst/law/alaw-decode.c @@ -0,0 +1,344 @@ +/* GStreamer A-Law to PCM conversion + * Copyright (C) 2000 by Abramo Bagnara <abramo@alsa-project.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +/** + * SECTION:element-alawdec + * + * This element decodes alaw audio. Alaw coding is also known as G.711. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "alaw-decode.h" + +extern GstStaticPadTemplate alaw_dec_src_factory; +extern GstStaticPadTemplate alaw_dec_sink_factory; + +GST_DEBUG_CATEGORY_STATIC (alaw_dec_debug); +#define GST_CAT_DEFAULT alaw_dec_debug + +static GstStateChangeReturn +gst_alaw_dec_change_state (GstElement * element, GstStateChange transition); +static GstFlowReturn gst_alaw_dec_chain (GstPad * pad, GstBuffer * buffer); + +GST_BOILERPLATE (GstALawDec, gst_alaw_dec, GstElement, GST_TYPE_ELEMENT); + +/* some day we might have defines in gstconfig.h that tell us about the + * desired cpu/memory/binary size trade-offs */ +#define GST_ALAW_DEC_USE_TABLE + +#ifdef GST_ALAW_DEC_USE_TABLE + +static const gint alaw_to_s16_table[256] = { + -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736, + -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784, + -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368, + -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392, + -22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944, + -30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136, + -11008, -10496, -12032, -11520, -8960, -8448, -9984, -9472, + -15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568, + -344, -328, -376, -360, -280, -264, -312, -296, + -472, -456, -504, -488, -408, -392, -440, -424, + -88, -72, -120, -104, -24, -8, -56, -40, + -216, -200, -248, -232, -152, -136, -184, -168, + -1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184, + -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696, + -688, -656, -752, -720, -560, -528, -624, -592, + -944, -912, -1008, -976, -816, -784, -880, -848, + 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736, + 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784, + 2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368, + 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392, + 22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944, + 30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136, + 11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472, + 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568, + 344, 328, 376, 360, 280, 264, 312, 296, + 472, 456, 504, 488, 408, 392, 440, 424, + 88, 72, 120, 104, 24, 8, 56, 40, + 216, 200, 248, 232, 152, 136, 184, 168, + 1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184, + 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696, + 688, 656, 752, 720, 560, 528, 624, 592, + 944, 912, 1008, 976, 816, 784, 880, 848 +}; + +static inline gint +alaw_to_s16 (guint8 a_val) +{ + return alaw_to_s16_table[a_val]; +} + +#else /* GST_ALAW_DEC_USE_TABLE */ + +static inline gint +alaw_to_s16 (guint8 a_val) +{ + gint t; + gint seg; + + a_val ^= 0x55; + t = a_val & 0x7f; + if (t < 16) + t = (t << 4) + 8; + else { + seg = (t >> 4) & 0x07; + t = ((t & 0x0f) << 4) + 0x108; + t <<= seg - 1; + } + return ((a_val & 0x80) ? t : -t); +} + +#endif /* GST_ALAW_DEC_USE_TABLE */ + +static gboolean +gst_alaw_dec_sink_setcaps (GstPad * pad, GstCaps * caps) +{ + GstALawDec *alawdec; + GstStructure *structure; + int rate, channels; + gboolean ret; + GstCaps *outcaps; + + alawdec = GST_ALAW_DEC (GST_PAD_PARENT (pad)); + + structure = gst_caps_get_structure (caps, 0); + + ret = gst_structure_get_int (structure, "rate", &rate); + ret &= gst_structure_get_int (structure, "channels", &channels); + if (!ret) + return FALSE; + + outcaps = gst_caps_new_simple ("audio/x-raw-int", + "width", G_TYPE_INT, 16, + "depth", G_TYPE_INT, 16, + "endianness", G_TYPE_INT, G_BYTE_ORDER, + "signed", G_TYPE_BOOLEAN, TRUE, + "rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, channels, NULL); + + ret = gst_pad_set_caps (alawdec->srcpad, outcaps); + gst_caps_unref (outcaps); + + if (ret) { + GST_DEBUG_OBJECT (alawdec, "rate=%d, channels=%d", rate, channels); + alawdec->rate = rate; + alawdec->channels = channels; + } + return ret; +} + +static GstCaps * +gst_alaw_dec_getcaps (GstPad * pad) +{ + GstALawDec *alawdec; + GstPad *otherpad; + GstCaps *othercaps, *result; + const GstCaps *templ; + const gchar *name; + gint i; + + alawdec = GST_ALAW_DEC (GST_PAD_PARENT (pad)); + + /* figure out the name of the caps we are going to return */ + if (pad == alawdec->srcpad) { + name = "audio/x-raw-int"; + otherpad = alawdec->sinkpad; + } else { + name = "audio/x-alaw"; + otherpad = alawdec->srcpad; + } + /* get caps from the peer, this can return NULL when there is no peer */ + othercaps = gst_pad_peer_get_caps (otherpad); + + /* get the template caps to make sure we return something acceptable */ + templ = gst_pad_get_pad_template_caps (pad); + + if (othercaps) { + /* there was a peer */ + othercaps = gst_caps_make_writable (othercaps); + + /* go through the caps and remove the fields we don't want */ + for (i = 0; i < gst_caps_get_size (othercaps); i++) { + GstStructure *structure; + + structure = gst_caps_get_structure (othercaps, i); + + /* adjust the name */ + gst_structure_set_name (structure, name); + + if (pad == alawdec->sinkpad) { + /* remove the fields we don't want */ + gst_structure_remove_fields (structure, "width", "depth", "endianness", + "signed", NULL); + } else { + /* add fixed fields */ + gst_structure_set (structure, "width", G_TYPE_INT, 16, + "depth", G_TYPE_INT, 16, + "endianness", G_TYPE_INT, G_BYTE_ORDER, + "signed", G_TYPE_BOOLEAN, TRUE, NULL); + } + } + /* filter against the allowed caps of the pad to return our result */ + result = gst_caps_intersect (othercaps, templ); + gst_caps_unref (othercaps); + } else { + /* there was no peer, return the template caps */ + result = gst_caps_copy (templ); + } + + return result; +} + +static void +gst_alaw_dec_base_init (gpointer klass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_static_pad_template (element_class, + &alaw_dec_src_factory); + gst_element_class_add_static_pad_template (element_class, + &alaw_dec_sink_factory); + + gst_element_class_set_details_simple (element_class, "A Law audio decoder", + "Codec/Decoder/Audio", "Convert 8bit A law to 16bit PCM", + "Zaheer Abbas Merali <zaheerabbas at merali dot org>"); + + GST_DEBUG_CATEGORY_INIT (alaw_dec_debug, "alawdec", 0, "A Law audio decoder"); +} + +static void +gst_alaw_dec_class_init (GstALawDecClass * klass) +{ + GstElementClass *element_class = (GstElementClass *) klass; + + element_class->change_state = GST_DEBUG_FUNCPTR (gst_alaw_dec_change_state); +} + +static void +gst_alaw_dec_init (GstALawDec * alawdec, GstALawDecClass * klass) +{ + alawdec->sinkpad = + gst_pad_new_from_static_template (&alaw_dec_sink_factory, "sink"); + gst_pad_set_setcaps_function (alawdec->sinkpad, + GST_DEBUG_FUNCPTR (gst_alaw_dec_sink_setcaps)); + gst_pad_set_getcaps_function (alawdec->sinkpad, + GST_DEBUG_FUNCPTR (gst_alaw_dec_getcaps)); + gst_pad_set_chain_function (alawdec->sinkpad, + GST_DEBUG_FUNCPTR (gst_alaw_dec_chain)); + gst_element_add_pad (GST_ELEMENT (alawdec), alawdec->sinkpad); + + alawdec->srcpad = + gst_pad_new_from_static_template (&alaw_dec_src_factory, "src"); + gst_pad_use_fixed_caps (alawdec->srcpad); + gst_pad_set_getcaps_function (alawdec->srcpad, + GST_DEBUG_FUNCPTR (gst_alaw_dec_getcaps)); + gst_element_add_pad (GST_ELEMENT (alawdec), alawdec->srcpad); +} + +static GstFlowReturn +gst_alaw_dec_chain (GstPad * pad, GstBuffer * buffer) +{ + GstALawDec *alawdec; + gint16 *linear_data; + guint8 *alaw_data; + guint alaw_size; + GstBuffer *outbuf; + gint i; + GstFlowReturn ret; + + alawdec = GST_ALAW_DEC (GST_PAD_PARENT (pad)); + + if (G_UNLIKELY (alawdec->rate == 0)) + goto not_negotiated; + + GST_LOG_OBJECT (alawdec, "buffer with ts=%" GST_TIME_FORMAT, + GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer))); + + alaw_data = GST_BUFFER_DATA (buffer); + alaw_size = GST_BUFFER_SIZE (buffer); + + ret = + gst_pad_alloc_buffer_and_set_caps (alawdec->srcpad, + GST_BUFFER_OFFSET_NONE, alaw_size * 2, GST_PAD_CAPS (alawdec->srcpad), + &outbuf); + if (ret != GST_FLOW_OK) + goto alloc_failed; + + linear_data = (gint16 *) GST_BUFFER_DATA (outbuf); + + /* copy discont flag */ + if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) + GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT); + + GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer); + GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer); + gst_buffer_set_caps (outbuf, GST_PAD_CAPS (alawdec->srcpad)); + + for (i = 0; i < alaw_size; i++) { + linear_data[i] = alaw_to_s16 (alaw_data[i]); + } + gst_buffer_unref (buffer); + + ret = gst_pad_push (alawdec->srcpad, outbuf); + + return ret; + +not_negotiated: + { + gst_buffer_unref (buffer); + GST_WARNING_OBJECT (alawdec, "no input format set: not-negotiated"); + return GST_FLOW_NOT_NEGOTIATED; + } +alloc_failed: + { + gst_buffer_unref (buffer); + GST_DEBUG_OBJECT (alawdec, "pad alloc failed, flow: %s", + gst_flow_get_name (ret)); + return ret; + } +} + +static GstStateChangeReturn +gst_alaw_dec_change_state (GstElement * element, GstStateChange transition) +{ + GstStateChangeReturn ret; + GstALawDec *dec = GST_ALAW_DEC (element); + + switch (transition) { + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + if (ret != GST_STATE_CHANGE_SUCCESS) + return ret; + + switch (transition) { + case GST_STATE_CHANGE_PAUSED_TO_READY: + dec->rate = 0; + dec->channels = 0; + break; + default: + break; + } + + return ret; +} diff --git a/gst/law/alaw-decode.h b/gst/law/alaw-decode.h new file mode 100644 index 0000000..55433cc --- /dev/null +++ b/gst/law/alaw-decode.h @@ -0,0 +1,58 @@ +/* GStreamer A-Law to PCM conversion + * Copyright (C) 2000 by Abramo Bagnara <abramo@alsa-project.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __GST_ALAW_DECODE_H__ +#define __GST_ALAW_DECODE_H__ + +#include <gst/gst.h> + +G_BEGIN_DECLS + +#define GST_TYPE_ALAW_DEC \ + (gst_alaw_dec_get_type()) +#define GST_ALAW_DEC(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALAW_DEC,GstALawDec)) +#define GST_ALAW_DEC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALAW_DEC,GstALawDecClass)) +#define GST_IS_ALAW_DEC(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALAW_DEC)) +#define GST_IS_ALAW_DEC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALAW_DEC)) + +typedef struct _GstALawDec GstALawDec; +typedef struct _GstALawDecClass GstALawDecClass; + +struct _GstALawDec { + GstElement element; + + GstPad *sinkpad,*srcpad; + gint rate; + gint channels; +}; + +struct _GstALawDecClass { + GstElementClass parent_class; +}; + +GType gst_alaw_dec_get_type(void); + +G_END_DECLS + +#endif /* __GST_ALAW_DECODE_H__ */ + diff --git a/gst/law/alaw-encode.c b/gst/law/alaw-encode.c new file mode 100644 index 0000000..b12c23e --- /dev/null +++ b/gst/law/alaw-encode.c @@ -0,0 +1,524 @@ +/* GStreamer PCM to A-Law conversion + * Copyright (C) 2000 by Abramo Bagnara <abramo@alsa-project.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +/** + * SECTION:element-alawenc + * + * This element encode alaw audio. Alaw coding is also known as G.711. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "alaw-encode.h" + +GST_DEBUG_CATEGORY_STATIC (alaw_enc_debug); +#define GST_CAT_DEFAULT alaw_enc_debug + +extern GstStaticPadTemplate alaw_enc_src_factory; +extern GstStaticPadTemplate alaw_enc_sink_factory; + +static GstFlowReturn gst_alaw_enc_chain (GstPad * pad, GstBuffer * buffer); + +GST_BOILERPLATE (GstALawEnc, gst_alaw_enc, GstElement, GST_TYPE_ELEMENT); + +/* some day we might have defines in gstconfig.h that tell us about the + * desired cpu/memory/binary size trade-offs */ +#define GST_ALAW_ENC_USE_TABLE + +#ifdef GST_ALAW_ENC_USE_TABLE + +static const guint8 alaw_encode[2048 + 1] = { + 0xd5, 0xd4, 0xd7, 0xd6, 0xd1, 0xd0, 0xd3, 0xd2, 0xdd, 0xdc, 0xdf, 0xde, + 0xd9, 0xd8, 0xdb, 0xda, 0xc5, 0xc4, 0xc7, 0xc6, 0xc1, 0xc0, 0xc3, 0xc2, + 0xcd, 0xcc, 0xcf, 0xce, 0xc9, 0xc8, 0xcb, 0xca, 0xf5, 0xf5, 0xf4, 0xf4, + 0xf7, 0xf7, 0xf6, 0xf6, 0xf1, 0xf1, 0xf0, 0xf0, 0xf3, 0xf3, 0xf2, 0xf2, + 0xfd, 0xfd, 0xfc, 0xfc, 0xff, 0xff, 0xfe, 0xfe, 0xf9, 0xf9, 0xf8, 0xf8, + 0xfb, 0xfb, 0xfa, 0xfa, 0xe5, 0xe5, 0xe5, 0xe5, 0xe4, 0xe4, 0xe4, 0xe4, + 0xe7, 0xe7, 0xe7, 0xe7, 0xe6, 0xe6, 0xe6, 0xe6, 0xe1, 0xe1, 0xe1, 0xe1, + 0xe0, 0xe0, 0xe0, 0xe0, 0xe3, 0xe3, 0xe3, 0xe3, 0xe2, 0xe2, 0xe2, 0xe2, + 0xed, 0xed, 0xed, 0xed, 0xec, 0xec, 0xec, 0xec, 0xef, 0xef, 0xef, 0xef, + 0xee, 0xee, 0xee, 0xee, 0xe9, 0xe9, 0xe9, 0xe9, 0xe8, 0xe8, 0xe8, 0xe8, + 0xeb, 0xeb, 0xeb, 0xeb, 0xea, 0xea, 0xea, 0xea, 0x95, 0x95, 0x95, 0x95, + 0x95, 0x95, 0x95, 0x95, 0x94, 0x94, 0x94, 0x94, 0x94, 0x94, 0x94, 0x94, + 0x97, 0x97, 0x97, 0x97, 0x97, 0x97, 0x97, 0x97, 0x96, 0x96, 0x96, 0x96, + 0x96, 0x96, 0x96, 0x96, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, 0x91, + 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x93, 0x93, 0x93, 0x93, + 0x93, 0x93, 0x93, 0x93, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, + 0x9d, 0x9d, 0x9d, 0x9d, 0x9d, 0x9d, 0x9d, 0x9d, 0x9c, 0x9c, 0x9c, 0x9c, + 0x9c, 0x9c, 0x9c, 0x9c, 0x9f, 0x9f, 0x9f, 0x9f, 0x9f, 0x9f, 0x9f, 0x9f, + 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x99, 0x99, 0x99, 0x99, + 0x99, 0x99, 0x99, 0x99, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98, + 0x9b, 0x9b, 0x9b, 0x9b, 0x9b, 0x9b, 0x9b, 0x9b, 0x9a, 0x9a, 0x9a, 0x9a, + 0x9a, 0x9a, 0x9a, 0x9a, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, + 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x84, 0x84, 0x84, 0x84, + 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, + 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, + 0x87, 0x87, 0x87, 0x87, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, + 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x86, 0x81, 0x81, 0x81, 0x81, + 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, + 0x80, 0x80, 0x80, 0x80, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, + 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x83, 0x82, 0x82, 0x82, 0x82, + 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, + 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, 0x8d, + 0x8d, 0x8d, 0x8d, 0x8d, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, + 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8f, 0x8f, 0x8f, 0x8f, + 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, 0x8f, + 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, 0x8e, + 0x8e, 0x8e, 0x8e, 0x8e, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, + 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x89, 0x88, 0x88, 0x88, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, + 0x8b, 0x8b, 0x8b, 0x8b, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, + 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0xb5, 0xb5, 0xb5, 0xb5, + 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, + 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, + 0xb5, 0xb5, 0xb5, 0xb5, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, + 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, + 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, + 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, + 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, + 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb7, 0xb6, 0xb6, 0xb6, 0xb6, + 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, + 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, 0xb6, + 0xb6, 0xb6, 0xb6, 0xb6, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, + 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, + 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, 0xb1, + 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, + 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, + 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb0, 0xb3, 0xb3, 0xb3, 0xb3, + 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, + 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, 0xb3, + 0xb3, 0xb3, 0xb3, 0xb3, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, + 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, + 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, 0xb2, + 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, + 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, + 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbc, 0xbc, 0xbc, 0xbc, + 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, + 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, + 0xbc, 0xbc, 0xbc, 0xbc, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, + 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, + 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, 0xbf, + 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, + 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, + 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xb9, 0xb9, 0xb9, 0xb9, + 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, + 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9, + 0xb9, 0xb9, 0xb9, 0xb9, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, + 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, + 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, 0xb8, + 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, + 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, + 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xba, 0xba, 0xba, 0xba, + 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, + 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, 0xba, + 0xba, 0xba, 0xba, 0xba, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, + 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, + 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, + 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, + 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, + 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa4, 0xa4, 0xa4, 0xa4, + 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, + 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, + 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, + 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, + 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, 0xa4, + 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, + 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, + 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, + 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, + 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, + 0xa7, 0xa7, 0xa7, 0xa7, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, + 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, + 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, + 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, + 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, + 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa1, 0xa1, 0xa1, 0xa1, + 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, + 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, + 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, + 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, + 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, 0xa1, + 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, + 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, + 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, + 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, + 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, 0xa0, + 0xa0, 0xa0, 0xa0, 0xa0, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, + 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, + 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, + 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, + 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, + 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa2, 0xa2, 0xa2, 0xa2, + 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, + 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, + 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, + 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, + 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, 0xa2, + 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, + 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, + 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, + 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, + 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, + 0xad, 0xad, 0xad, 0xad, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, + 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, + 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, + 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, + 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, + 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xac, 0xaf, 0xaf, 0xaf, 0xaf, + 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, + 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, + 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, + 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, + 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, 0xaf, + 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, + 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, + 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, + 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, + 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae, + 0xae, 0xae, 0xae, 0xae, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, + 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, + 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, + 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, + 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, + 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa9, 0xa8, 0xa8, 0xa8, 0xa8, + 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, + 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, + 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, + 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, + 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, 0xa8, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, + 0xab, 0xab, 0xab, 0xab, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, + 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, + 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, + 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, + 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, + 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0x2a +}; + +static inline guint8 +s16_to_alaw (gint16 pcm_val) +{ + if (pcm_val >= 0) + return alaw_encode[pcm_val / 16]; + else + return (0x7F & alaw_encode[pcm_val / -16]); +} + +#else /* GST_ALAW_ENC_USE_TABLE */ + +/* + * s16_to_alaw() - Convert a 16-bit linear PCM value to 8-bit A-law + * + * s16_to_alaw() accepts an 16-bit integer and encodes it as A-law data. + * + * Linear Input Code Compressed Code + * ------------------------ --------------- + * 0000000wxyza 000wxyz + * 0000001wxyza 001wxyz + * 000001wxyzab 010wxyz + * 00001wxyzabc 011wxyz + * 0001wxyzabcd 100wxyz + * 001wxyzabcde 101wxyz + * 01wxyzabcdef 110wxyz + * 1wxyzabcdefg 111wxyz + * + * For further information see John C. Bellamy's Digital Telephony, 1982, + * John Wiley & Sons, pps 98-111 and 472-476. + */ + +static inline gint +val_seg (gint val) +{ + gint r = 1; + + val >>= 8; + if (val & 0xf0) { + val >>= 4; + r += 4; + } + if (val & 0x0c) { + val >>= 2; + r += 2; + } + if (val & 0x02) + r += 1; + return r; +} + +static inline guint8 +s16_to_alaw (gint pcm_val) +{ + gint seg; + guint8 mask; + guint8 aval; + + if (pcm_val >= 0) { + mask = 0xD5; + } else { + mask = 0x55; + pcm_val = -pcm_val; + if (pcm_val > 0x7fff) + pcm_val = 0x7fff; + } + + if (pcm_val < 256) + aval = pcm_val >> 4; + else { + /* Convert the scaled magnitude to segment number. */ + seg = val_seg (pcm_val); + aval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0x0f); + } + return aval ^ mask; +} + +#endif /* GST_ALAW_ENC_USE_TABLE */ + +static GstCaps * +gst_alaw_enc_getcaps (GstPad * pad) +{ + GstALawEnc *alawenc; + GstPad *otherpad; + GstCaps *othercaps, *result; + const GstCaps *templ; + const gchar *name; + gint i; + + alawenc = GST_ALAW_ENC (GST_PAD_PARENT (pad)); + + /* figure out the name of the caps we are going to return */ + if (pad == alawenc->srcpad) { + name = "audio/x-alaw"; + otherpad = alawenc->sinkpad; + } else { + name = "audio/x-raw-int"; + otherpad = alawenc->srcpad; + } + /* get caps from the peer, this can return NULL when there is no peer */ + othercaps = gst_pad_peer_get_caps (otherpad); + + /* get the template caps to make sure we return something acceptable */ + templ = gst_pad_get_pad_template_caps (pad); + + if (othercaps) { + /* there was a peer */ + othercaps = gst_caps_make_writable (othercaps); + + /* go through the caps and remove the fields we don't want */ + for (i = 0; i < gst_caps_get_size (othercaps); i++) { + GstStructure *structure; + + structure = gst_caps_get_structure (othercaps, i); + + /* adjust the name */ + gst_structure_set_name (structure, name); + + if (pad == alawenc->srcpad) { + /* remove the fields we don't want */ + gst_structure_remove_fields (structure, "width", "depth", "endianness", + "signed", NULL); + } else { + /* add fixed fields */ + gst_structure_set (structure, "width", G_TYPE_INT, 16, + "depth", G_TYPE_INT, 16, + "endianness", G_TYPE_INT, G_BYTE_ORDER, + "signed", G_TYPE_BOOLEAN, TRUE, NULL); + } + } + /* filter against the allowed caps of the pad to return our result */ + result = gst_caps_intersect (othercaps, templ); + gst_caps_unref (othercaps); + } else { + /* there was no peer, return the template caps */ + result = gst_caps_copy (templ); + } + + return result; +} + +static gboolean +gst_alaw_enc_setcaps (GstPad * pad, GstCaps * caps) +{ + GstALawEnc *alawenc; + GstPad *otherpad; + GstStructure *structure; + gboolean ret; + GstCaps *base_caps; + + alawenc = GST_ALAW_ENC (GST_PAD_PARENT (pad)); + + structure = gst_caps_get_structure (caps, 0); + gst_structure_get_int (structure, "channels", &alawenc->channels); + gst_structure_get_int (structure, "rate", &alawenc->rate); + + if (pad == alawenc->sinkpad) { + otherpad = alawenc->srcpad; + } else { + otherpad = alawenc->sinkpad; + } + + base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad)); + structure = gst_caps_get_structure (base_caps, 0); + gst_structure_set (structure, "rate", G_TYPE_INT, alawenc->rate, NULL); + gst_structure_set (structure, "channels", G_TYPE_INT, alawenc->channels, + NULL); + + GST_DEBUG_OBJECT (alawenc, "rate=%d, channels=%d", alawenc->rate, + alawenc->channels); + + ret = gst_pad_set_caps (otherpad, base_caps); + + gst_caps_unref (base_caps); + + return ret; +} + +static void +gst_alaw_enc_base_init (gpointer klass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_static_pad_template (element_class, + &alaw_enc_src_factory); + gst_element_class_add_static_pad_template (element_class, + &alaw_enc_sink_factory); + + gst_element_class_set_details_simple (element_class, + "A Law audio encoder", "Codec/Encoder/Audio", + "Convert 16bit PCM to 8bit A law", + "Zaheer Abbas Merali <zaheerabbas at merali dot org>"); + + GST_DEBUG_CATEGORY_INIT (alaw_enc_debug, "alawenc", 0, "A Law audio encoder"); +} + +static void +gst_alaw_enc_class_init (GstALawEncClass * klass) +{ + /* nothing to do here for now */ +} + +static void +gst_alaw_enc_init (GstALawEnc * alawenc, GstALawEncClass * klass) +{ + alawenc->sinkpad = + gst_pad_new_from_static_template (&alaw_enc_sink_factory, "sink"); + gst_pad_set_setcaps_function (alawenc->sinkpad, + GST_DEBUG_FUNCPTR (gst_alaw_enc_setcaps)); + gst_pad_set_getcaps_function (alawenc->sinkpad, + GST_DEBUG_FUNCPTR (gst_alaw_enc_getcaps)); + gst_pad_set_chain_function (alawenc->sinkpad, + GST_DEBUG_FUNCPTR (gst_alaw_enc_chain)); + gst_element_add_pad (GST_ELEMENT (alawenc), alawenc->sinkpad); + + alawenc->srcpad = + gst_pad_new_from_static_template (&alaw_enc_src_factory, "src"); + gst_pad_set_setcaps_function (alawenc->srcpad, + GST_DEBUG_FUNCPTR (gst_alaw_enc_setcaps)); + gst_pad_set_getcaps_function (alawenc->srcpad, + GST_DEBUG_FUNCPTR (gst_alaw_enc_getcaps)); + gst_pad_use_fixed_caps (alawenc->srcpad); + gst_element_add_pad (GST_ELEMENT (alawenc), alawenc->srcpad); + + /* init rest */ + alawenc->channels = 0; + alawenc->rate = 0; +} + +static GstFlowReturn +gst_alaw_enc_chain (GstPad * pad, GstBuffer * buffer) +{ + GstALawEnc *alawenc; + gint16 *linear_data; + guint linear_size; + guint8 *alaw_data; + guint alaw_size; + GstBuffer *outbuf; + gint i; + GstFlowReturn ret; + GstClockTime timestamp, duration; + + alawenc = GST_ALAW_ENC (GST_PAD_PARENT (pad)); + + if (G_UNLIKELY (alawenc->rate == 0 || alawenc->channels == 0)) + goto not_negotiated; + + linear_data = (gint16 *) GST_BUFFER_DATA (buffer); + linear_size = GST_BUFFER_SIZE (buffer); + + alaw_size = linear_size / 2; + + timestamp = GST_BUFFER_TIMESTAMP (buffer); + duration = GST_BUFFER_DURATION (buffer); + + GST_LOG_OBJECT (alawenc, "buffer with ts=%" GST_TIME_FORMAT, + GST_TIME_ARGS (timestamp)); + + ret = + gst_pad_alloc_buffer_and_set_caps (alawenc->srcpad, + GST_BUFFER_OFFSET_NONE, alaw_size, GST_PAD_CAPS (alawenc->srcpad), + &outbuf); + if (ret != GST_FLOW_OK) + goto done; + + if (duration == GST_CLOCK_TIME_NONE) { + duration = gst_util_uint64_scale_int (alaw_size, + GST_SECOND, alawenc->rate * alawenc->channels); + } + + if (GST_BUFFER_SIZE (outbuf) < alaw_size) { + /* pad-alloc can return a smaller buffer */ + gst_buffer_unref (outbuf); + outbuf = gst_buffer_new_and_alloc (alaw_size); + } + + alaw_data = (guint8 *) GST_BUFFER_DATA (outbuf); + + /* copy discont flag */ + if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) + GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT); + + GST_BUFFER_TIMESTAMP (outbuf) = timestamp; + GST_BUFFER_DURATION (outbuf) = duration; + + gst_buffer_set_caps (outbuf, GST_PAD_CAPS (alawenc->srcpad)); + + for (i = 0; i < alaw_size; i++) { + alaw_data[i] = s16_to_alaw (linear_data[i]); + } + + ret = gst_pad_push (alawenc->srcpad, outbuf); + +done: + + gst_buffer_unref (buffer); + + return ret; + +not_negotiated: + { + ret = GST_FLOW_NOT_NEGOTIATED; + goto done; + } +} diff --git a/gst/law/alaw-encode.h b/gst/law/alaw-encode.h new file mode 100644 index 0000000..3ca53a6 --- /dev/null +++ b/gst/law/alaw-encode.h @@ -0,0 +1,59 @@ +/* GStreamer PCM to A-Law conversion + * Copyright (C) 2000 by Abramo Bagnara <abramo@alsa-project.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + + +#ifndef __GST_ALAW_ENCODE_H__ +#define __GST_ALAW_ENCODE_H__ + +#include <gst/gst.h> + +G_BEGIN_DECLS + +#define GST_TYPE_ALAW_ENC \ + (gst_alaw_enc_get_type()) +#define GST_ALAW_ENC(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALAW_ENC,GstALawEnc)) +#define GST_ALAW_ENC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALAW_ENC,GstALawEncClass)) +#define GST_IS_ALAW_ENC(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALAW_ENC)) +#define GST_IS_ALAW_ENC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALAW_ENC)) + +typedef struct _GstALawEnc GstALawEnc; +typedef struct _GstALawEncClass GstALawEncClass; + +struct _GstALawEnc { + GstElement element; + + GstPad *sinkpad,*srcpad; + + gint channels; + gint rate; +}; + +struct _GstALawEncClass { + GstElementClass parent_class; +}; + +GType gst_alaw_enc_get_type(void); + +G_END_DECLS + +#endif /* __GST_ALAW_ENCODE_H__ */ diff --git a/gst/law/alaw.c b/gst/law/alaw.c new file mode 100644 index 0000000..0442935 --- /dev/null +++ b/gst/law/alaw.c @@ -0,0 +1,77 @@ +/* GStreamer PCM/A-Law conversions + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "alaw-encode.h" +#include "alaw-decode.h" + +GstStaticPadTemplate alaw_dec_src_factory = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-raw-int, " + "rate = (int) [ 8000, 192000 ], " + "channels = (int) [ 1, 2 ], " + "endianness = (int) BYTE_ORDER, " + "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) True") + ); + +GstStaticPadTemplate alaw_dec_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-alaw, " + "rate = [ 8000 , 192000 ], " "channels = [ 1 , 2 ]") + ); + +GstStaticPadTemplate alaw_enc_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-raw-int, " + "rate = (int) [ 8000, 192000 ], " + "channels = (int) [ 1, 2 ], " + "endianness = (int) BYTE_ORDER, " + "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) True") + ); + +GstStaticPadTemplate alaw_enc_src_factory = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-alaw, " + "rate = [ 8000 , 192000 ], " "channels = [ 1 , 2 ]") + ); + +static gboolean +plugin_init (GstPlugin * plugin) +{ + if (!gst_element_register (plugin, "alawenc", + GST_RANK_PRIMARY, GST_TYPE_ALAW_ENC) || + !gst_element_register (plugin, "alawdec", + GST_RANK_PRIMARY, GST_TYPE_ALAW_DEC)) + return FALSE; + + return TRUE; +} + +/* FIXME 0.11: merge alaw and mulaw into one plugin? */ +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "alaw", + "ALaw audio conversion routines", + plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN) diff --git a/gst/law/mulaw-conversion.c b/gst/law/mulaw-conversion.c new file mode 100644 index 0000000..8afae80 --- /dev/null +++ b/gst/law/mulaw-conversion.c @@ -0,0 +1,118 @@ +/* + * This routine converts from linear to ulaw + * 29 September 1989 + * + * Craig Reese: IDA/Supercomputing Research Center + * Joe Campbell: Department of Defense + * + * References: + * 1) CCITT Recommendation G.711 (very difficult to follow) + * 2) "A New Digital Technique for Implementation of Any + * Continuous PCM Companding Law," Villeret, Michel, + * et al. 1973 IEEE Int. Conf. on Communications, Vol 1, + * 1973, pg. 11.12-11.17 + * 3) MIL-STD-188-113,"Interoperability and Performance Standards + * for Analog-to_Digital Conversion Techniques," + * 17 February 1987 + * + * Input: Signed 16 bit linear sample + * Output: 8 bit ulaw sample + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <glib.h> + +#include "mulaw-conversion.h" + +#undef ZEROTRAP /* turn on the trap as per the MIL-STD */ +#define BIAS 0x84 /* define the add-in bias for 16 bit samples */ +#define CLIP 32635 + +void +mulaw_encode (gint16 * in, guint8 * out, gint numsamples) +{ + static gint16 exp_lut[256] = { 0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 + }; + gint16 sign, exponent, mantissa, i; + gint16 sample; + guint8 ulawbyte; + + for (i = 0; i < numsamples; i++) { + sample = in[i]; + /** get the sample into sign-magnitude **/ + sign = (sample >> 8) & 0x80; /* set aside the sign */ + if (sign != 0) { + sample = -sample; /* get magnitude */ + } + /* sample can be zero because we can overflow in the inversion, + * checking against the unsigned version solves this */ + if (((guint16) sample) > CLIP) + sample = CLIP; /* clip the magnitude */ + + /** convert from 16 bit linear to ulaw **/ + sample = sample + BIAS; + exponent = exp_lut[(sample >> 7) & 0xFF]; + mantissa = (sample >> (exponent + 3)) & 0x0F; + ulawbyte = ~(sign | (exponent << 4) | mantissa); +#ifdef ZEROTRAP + if (ulawbyte == 0) + ulawbyte = 0x02; /* optional CCITT trap */ +#endif + out[i] = ulawbyte; + } +} + +/* + * This routine converts from ulaw to 16 bit linear + * 29 September 1989 + * + * Craig Reese: IDA/Supercomputing Research Center + * + * References: + * 1) CCITT Recommendation G.711 (very difficult to follow) + * 2) MIL-STD-188-113,"Interoperability and Performance Standards + * for Analog-to_Digital Conversion Techniques," + * 17 February 1987 + * + * Input: 8 bit ulaw sample + * Output: signed 16 bit linear sample + */ + +void +mulaw_decode (guint8 * in, gint16 * out, gint numsamples) +{ + static gint16 exp_lut[8] = { 0, 132, 396, 924, 1980, 4092, 8316, 16764 }; + gint16 sign, exponent, mantissa; + guint8 ulawbyte; + gint16 linear, i; + + for (i = 0; i < numsamples; i++) { + ulawbyte = in[i]; + ulawbyte = ~ulawbyte; + sign = (ulawbyte & 0x80); + exponent = (ulawbyte >> 4) & 0x07; + mantissa = ulawbyte & 0x0F; + linear = exp_lut[exponent] + (mantissa << (exponent + 3)); + if (sign != 0) + linear = -linear; + out[i] = linear; + } +} diff --git a/gst/law/mulaw-conversion.h b/gst/law/mulaw-conversion.h new file mode 100644 index 0000000..38367ad --- /dev/null +++ b/gst/law/mulaw-conversion.h @@ -0,0 +1,12 @@ +#ifndef _GST_ULAW_CONVERSION_H +#define _GST_ULAW_CONVERSION_H + +#include <glib.h> + +void +mulaw_encode(gint16* in, guint8* out, gint numsamples); +void +mulaw_decode(guint8* in,gint16* out,gint numsamples); + +#endif /* _GST_ULAW_CONVERSION_H */ + diff --git a/gst/law/mulaw-decode.c b/gst/law/mulaw-decode.c new file mode 100644 index 0000000..b8a0d65 --- /dev/null +++ b/gst/law/mulaw-decode.c @@ -0,0 +1,307 @@ +/* GStreamer + * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +/** + * SECTION:element-mulawdec + * + * This element decodes mulaw audio. Mulaw coding is also known as G.711. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include <gst/gst.h> +#include "mulaw-decode.h" +#include "mulaw-conversion.h" + +extern GstStaticPadTemplate mulaw_dec_src_factory; +extern GstStaticPadTemplate mulaw_dec_sink_factory; + +/* Stereo signals and args */ +enum +{ + /* FILL ME */ + LAST_SIGNAL +}; + +enum +{ + ARG_0 +}; + +static void gst_mulawdec_class_init (GstMuLawDecClass * klass); +static void gst_mulawdec_base_init (GstMuLawDecClass * klass); +static void gst_mulawdec_init (GstMuLawDec * mulawdec); +static GstStateChangeReturn +gst_mulawdec_change_state (GstElement * element, GstStateChange transition); + +static GstFlowReturn gst_mulawdec_chain (GstPad * pad, GstBuffer * buffer); + +static GstElementClass *parent_class = NULL; + +static gboolean +mulawdec_sink_setcaps (GstPad * pad, GstCaps * caps) +{ + GstMuLawDec *mulawdec; + GstStructure *structure; + int rate, channels; + gboolean ret; + GstCaps *outcaps; + + mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad)); + + structure = gst_caps_get_structure (caps, 0); + ret = gst_structure_get_int (structure, "rate", &rate); + ret = ret && gst_structure_get_int (structure, "channels", &channels); + if (!ret) + return FALSE; + + outcaps = gst_caps_new_simple ("audio/x-raw-int", + "width", G_TYPE_INT, 16, + "depth", G_TYPE_INT, 16, + "endianness", G_TYPE_INT, G_BYTE_ORDER, + "signed", G_TYPE_BOOLEAN, TRUE, + "rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, channels, NULL); + ret = gst_pad_set_caps (mulawdec->srcpad, outcaps); + gst_caps_unref (outcaps); + + if (ret) { + GST_DEBUG_OBJECT (mulawdec, "rate=%d, channels=%d", rate, channels); + mulawdec->rate = rate; + mulawdec->channels = channels; + } + return ret; +} + +static GstCaps * +mulawdec_getcaps (GstPad * pad) +{ + GstMuLawDec *mulawdec; + GstPad *otherpad; + GstCaps *othercaps, *result; + const GstCaps *templ; + const gchar *name; + gint i; + + mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad)); + + /* figure out the name of the caps we are going to return */ + if (pad == mulawdec->srcpad) { + name = "audio/x-raw-int"; + otherpad = mulawdec->sinkpad; + } else { + name = "audio/x-mulaw"; + otherpad = mulawdec->srcpad; + } + /* get caps from the peer, this can return NULL when there is no peer */ + othercaps = gst_pad_peer_get_caps (otherpad); + + /* get the template caps to make sure we return something acceptable */ + templ = gst_pad_get_pad_template_caps (pad); + + if (othercaps) { + /* there was a peer */ + othercaps = gst_caps_make_writable (othercaps); + + /* go through the caps and remove the fields we don't want */ + for (i = 0; i < gst_caps_get_size (othercaps); i++) { + GstStructure *structure; + + structure = gst_caps_get_structure (othercaps, i); + + /* adjust the name */ + gst_structure_set_name (structure, name); + + if (pad == mulawdec->sinkpad) { + /* remove the fields we don't want */ + gst_structure_remove_fields (structure, "width", "depth", "endianness", + "signed", NULL); + } else { + /* add fixed fields */ + gst_structure_set (structure, "width", G_TYPE_INT, 16, + "depth", G_TYPE_INT, 16, + "endianness", G_TYPE_INT, G_BYTE_ORDER, + "signed", G_TYPE_BOOLEAN, TRUE, NULL); + } + } + /* filter against the allowed caps of the pad to return our result */ + result = gst_caps_intersect (othercaps, templ); + gst_caps_unref (othercaps); + } else { + /* there was no peer, return the template caps */ + result = gst_caps_copy (templ); + } + return result; +} + +GType +gst_mulawdec_get_type (void) +{ + static GType mulawdec_type = 0; + + if (!mulawdec_type) { + static const GTypeInfo mulawdec_info = { + sizeof (GstMuLawDecClass), + (GBaseInitFunc) gst_mulawdec_base_init, + NULL, + (GClassInitFunc) gst_mulawdec_class_init, + NULL, + NULL, + sizeof (GstMuLawDec), + 0, + (GInstanceInitFunc) gst_mulawdec_init, + }; + + mulawdec_type = + g_type_register_static (GST_TYPE_ELEMENT, "GstMuLawDec", &mulawdec_info, + 0); + } + return mulawdec_type; +} + +static void +gst_mulawdec_base_init (GstMuLawDecClass * klass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_static_pad_template (element_class, + &mulaw_dec_src_factory); + gst_element_class_add_static_pad_template (element_class, + &mulaw_dec_sink_factory); + gst_element_class_set_details_simple (element_class, "Mu Law audio decoder", + "Codec/Decoder/Audio", + "Convert 8bit mu law to 16bit PCM", + "Zaheer Abbas Merali <zaheerabbas at merali dot org>"); +} + +static void +gst_mulawdec_class_init (GstMuLawDecClass * klass) +{ + GstElementClass *element_class = (GstElementClass *) klass; + + parent_class = g_type_class_peek_parent (klass); + + element_class->change_state = GST_DEBUG_FUNCPTR (gst_mulawdec_change_state); +} + +static void +gst_mulawdec_init (GstMuLawDec * mulawdec) +{ + mulawdec->sinkpad = + gst_pad_new_from_static_template (&mulaw_dec_sink_factory, "sink"); + gst_pad_set_setcaps_function (mulawdec->sinkpad, mulawdec_sink_setcaps); + gst_pad_set_getcaps_function (mulawdec->sinkpad, mulawdec_getcaps); + gst_pad_set_chain_function (mulawdec->sinkpad, gst_mulawdec_chain); + gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->sinkpad); + + mulawdec->srcpad = + gst_pad_new_from_static_template (&mulaw_dec_src_factory, "src"); + gst_pad_use_fixed_caps (mulawdec->srcpad); + gst_pad_set_getcaps_function (mulawdec->srcpad, mulawdec_getcaps); + gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->srcpad); +} + +static GstFlowReturn +gst_mulawdec_chain (GstPad * pad, GstBuffer * buffer) +{ + GstMuLawDec *mulawdec; + gint16 *linear_data; + guint8 *mulaw_data; + guint mulaw_size; + GstBuffer *outbuf; + GstFlowReturn ret; + + mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad)); + + if (G_UNLIKELY (mulawdec->rate == 0)) + goto not_negotiated; + + mulaw_data = (guint8 *) GST_BUFFER_DATA (buffer); + mulaw_size = GST_BUFFER_SIZE (buffer); + + ret = + gst_pad_alloc_buffer_and_set_caps (mulawdec->srcpad, + GST_BUFFER_OFFSET_NONE, mulaw_size * 2, GST_PAD_CAPS (mulawdec->srcpad), + &outbuf); + if (ret != GST_FLOW_OK) + goto alloc_failed; + + linear_data = (gint16 *) GST_BUFFER_DATA (outbuf); + + /* copy discont flag */ + if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) + GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT); + + GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer); + if (GST_BUFFER_DURATION (outbuf) == GST_CLOCK_TIME_NONE) + GST_BUFFER_DURATION (outbuf) = gst_util_uint64_scale_int (GST_SECOND, + mulaw_size * 2, 2 * mulawdec->rate * mulawdec->channels); + else + GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer); + gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mulawdec->srcpad)); + + mulaw_decode (mulaw_data, linear_data, mulaw_size); + + gst_buffer_unref (buffer); + + ret = gst_pad_push (mulawdec->srcpad, outbuf); + + return ret; + + /* ERRORS */ +not_negotiated: + { + GST_WARNING_OBJECT (mulawdec, "no input format set: not-negotiated"); + gst_buffer_unref (buffer); + return GST_FLOW_NOT_NEGOTIATED; + } +alloc_failed: + { + GST_DEBUG_OBJECT (mulawdec, "pad alloc failed, flow: %s", + gst_flow_get_name (ret)); + gst_buffer_unref (buffer); + return ret; + } +} + +static GstStateChangeReturn +gst_mulawdec_change_state (GstElement * element, GstStateChange transition) +{ + GstStateChangeReturn ret; + GstMuLawDec *dec = GST_MULAWDEC (element); + + switch (transition) { + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + if (ret != GST_STATE_CHANGE_SUCCESS) + return ret; + + switch (transition) { + case GST_STATE_CHANGE_PAUSED_TO_READY: + dec->rate = 0; + dec->channels = 0; + break; + default: + break; + } + + return ret; +} diff --git a/gst/law/mulaw-decode.h b/gst/law/mulaw-decode.h new file mode 100644 index 0000000..9585118 --- /dev/null +++ b/gst/law/mulaw-decode.h @@ -0,0 +1,58 @@ +/* GStreamer + * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __GST_MULAWDECODE_H__ +#define __GST_MULAWDECODE_H__ + +#include <gst/gst.h> + +G_BEGIN_DECLS + +#define GST_TYPE_MULAWDEC \ + (gst_mulawdec_get_type()) +#define GST_MULAWDEC(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MULAWDEC,GstMuLawDec)) +#define GST_MULAWDEC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MULAWDEC,GstMuLawDecClass)) +#define GST_IS_MULAWDEC(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULAWDEC)) +#define GST_IS_MULAWDEC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULAWDEC)) + +typedef struct _GstMuLawDec GstMuLawDec; +typedef struct _GstMuLawDecClass GstMuLawDecClass; + +struct _GstMuLawDec { + GstElement element; + + GstPad *sinkpad,*srcpad; + + gint rate; + gint channels; +}; + +struct _GstMuLawDecClass { + GstElementClass parent_class; +}; + +GType gst_mulawdec_get_type(void); + +G_END_DECLS + +#endif /* __GST_STEREO_H__ */ diff --git a/gst/law/mulaw-encode.c b/gst/law/mulaw-encode.c new file mode 100644 index 0000000..15f8285 --- /dev/null +++ b/gst/law/mulaw-encode.c @@ -0,0 +1,297 @@ +/* GStreamer + * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ +/** + * SECTION:element-mulawenc + * + * This element encode mulaw audio. Mulaw coding is also known as G.711. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include <gst/gst.h> +#include "mulaw-encode.h" +#include "mulaw-conversion.h" + +extern GstStaticPadTemplate mulaw_enc_src_factory; +extern GstStaticPadTemplate mulaw_enc_sink_factory; + +/* Stereo signals and args */ +enum +{ + /* FILL ME */ + LAST_SIGNAL +}; + +enum +{ + ARG_0 +}; + +static void gst_mulawenc_class_init (GstMuLawEncClass * klass); +static void gst_mulawenc_base_init (GstMuLawEncClass * klass); +static void gst_mulawenc_init (GstMuLawEnc * mulawenc); + +static GstFlowReturn gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer); + +static GstElementClass *parent_class = NULL; + +/*static guint gst_stereo_signals[LAST_SIGNAL] = { 0 }; */ + +static GstCaps * +mulawenc_getcaps (GstPad * pad) +{ + GstMuLawEnc *mulawenc; + GstPad *otherpad; + GstCaps *othercaps, *result; + const GstCaps *templ; + const gchar *name; + gint i; + + mulawenc = GST_MULAWENC (GST_PAD_PARENT (pad)); + + /* figure out the name of the caps we are going to return */ + if (pad == mulawenc->srcpad) { + name = "audio/x-mulaw"; + otherpad = mulawenc->sinkpad; + } else { + name = "audio/x-raw-int"; + otherpad = mulawenc->srcpad; + } + /* get caps from the peer, this can return NULL when there is no peer */ + othercaps = gst_pad_peer_get_caps (otherpad); + + /* get the template caps to make sure we return something acceptable */ + templ = gst_pad_get_pad_template_caps (pad); + + if (othercaps) { + /* there was a peer */ + othercaps = gst_caps_make_writable (othercaps); + + /* go through the caps and remove the fields we don't want */ + for (i = 0; i < gst_caps_get_size (othercaps); i++) { + GstStructure *structure; + + structure = gst_caps_get_structure (othercaps, i); + + /* adjust the name */ + gst_structure_set_name (structure, name); + + if (pad == mulawenc->srcpad) { + /* remove the fields we don't want */ + gst_structure_remove_fields (structure, "width", "depth", "endianness", + "signed", NULL); + } else { + /* add fixed fields */ + gst_structure_set (structure, "width", G_TYPE_INT, 16, + "depth", G_TYPE_INT, 16, + "endianness", G_TYPE_INT, G_BYTE_ORDER, + "signed", G_TYPE_BOOLEAN, TRUE, NULL); + } + } + /* filter against the allowed caps of the pad to return our result */ + result = gst_caps_intersect (othercaps, templ); + gst_caps_unref (othercaps); + } else { + /* there was no peer, return the template caps */ + result = gst_caps_copy (templ); + } + return result; +} + +static gboolean +mulawenc_setcaps (GstPad * pad, GstCaps * caps) +{ + GstMuLawEnc *mulawenc; + GstPad *otherpad; + GstStructure *structure; + GstCaps *base_caps; + + mulawenc = GST_MULAWENC (gst_pad_get_parent (pad)); + + structure = gst_caps_get_structure (caps, 0); + gst_structure_get_int (structure, "channels", &mulawenc->channels); + gst_structure_get_int (structure, "rate", &mulawenc->rate); + + if (pad == mulawenc->sinkpad) { + otherpad = mulawenc->srcpad; + } else { + otherpad = mulawenc->sinkpad; + } + base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad)); + + structure = gst_caps_get_structure (base_caps, 0); + gst_structure_set (structure, "rate", G_TYPE_INT, mulawenc->rate, NULL); + gst_structure_set (structure, "channels", G_TYPE_INT, mulawenc->channels, + NULL); + + gst_pad_set_caps (otherpad, base_caps); + + gst_object_unref (mulawenc); + gst_caps_unref (base_caps); + + return TRUE; +} + +GType +gst_mulawenc_get_type (void) +{ + static GType mulawenc_type = 0; + + if (!mulawenc_type) { + static const GTypeInfo mulawenc_info = { + sizeof (GstMuLawEncClass), + (GBaseInitFunc) gst_mulawenc_base_init, + NULL, + (GClassInitFunc) gst_mulawenc_class_init, + NULL, + NULL, + sizeof (GstMuLawEnc), + 0, + (GInstanceInitFunc) gst_mulawenc_init, + }; + + mulawenc_type = + g_type_register_static (GST_TYPE_ELEMENT, "GstMuLawEnc", &mulawenc_info, + 0); + } + return mulawenc_type; +} + +static void +gst_mulawenc_base_init (GstMuLawEncClass * klass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_static_pad_template (element_class, + &mulaw_enc_src_factory); + gst_element_class_add_static_pad_template (element_class, + &mulaw_enc_sink_factory); + gst_element_class_set_details_simple (element_class, "Mu Law audio encoder", + "Codec/Encoder/Audio", + "Convert 16bit PCM to 8bit mu law", + "Zaheer Abbas Merali <zaheerabbas at merali dot org>"); +} + +static void +gst_mulawenc_class_init (GstMuLawEncClass * klass) +{ + parent_class = g_type_class_peek_parent (klass); +} + +static void +gst_mulawenc_init (GstMuLawEnc * mulawenc) +{ + mulawenc->sinkpad = + gst_pad_new_from_static_template (&mulaw_enc_sink_factory, "sink"); + gst_pad_set_setcaps_function (mulawenc->sinkpad, mulawenc_setcaps); + gst_pad_set_getcaps_function (mulawenc->sinkpad, mulawenc_getcaps); + gst_pad_set_chain_function (mulawenc->sinkpad, gst_mulawenc_chain); + gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->sinkpad); + + mulawenc->srcpad = + gst_pad_new_from_static_template (&mulaw_enc_src_factory, "src"); + gst_pad_set_setcaps_function (mulawenc->srcpad, mulawenc_setcaps); + gst_pad_set_getcaps_function (mulawenc->srcpad, mulawenc_getcaps); + gst_pad_use_fixed_caps (mulawenc->srcpad); + gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->srcpad); + + /* init rest */ + mulawenc->channels = 0; + mulawenc->rate = 0; +} + +static GstFlowReturn +gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer) +{ + GstMuLawEnc *mulawenc; + gint16 *linear_data; + guint linear_size; + guint8 *mulaw_data; + guint mulaw_size; + GstBuffer *outbuf; + GstFlowReturn ret; + GstClockTime timestamp, duration; + + mulawenc = GST_MULAWENC (gst_pad_get_parent (pad)); + + if (!mulawenc->rate || !mulawenc->channels) + goto not_negotiated; + + linear_data = (gint16 *) GST_BUFFER_DATA (buffer); + linear_size = GST_BUFFER_SIZE (buffer); + + mulaw_size = linear_size / 2; + + timestamp = GST_BUFFER_TIMESTAMP (buffer); + duration = GST_BUFFER_DURATION (buffer); + + ret = gst_pad_alloc_buffer_and_set_caps (mulawenc->srcpad, + GST_BUFFER_OFFSET_NONE, mulaw_size, GST_PAD_CAPS (mulawenc->srcpad), + &outbuf); + if (ret != GST_FLOW_OK) + goto alloc_failed; + + if (duration == -1) { + duration = gst_util_uint64_scale_int (mulaw_size, + GST_SECOND, mulawenc->rate * mulawenc->channels); + } + + if (GST_BUFFER_SIZE (outbuf) < mulaw_size) { + /* pad-alloc can suggest a smaller size */ + gst_buffer_unref (outbuf); + outbuf = gst_buffer_new_and_alloc (mulaw_size); + } + + mulaw_data = (guint8 *) GST_BUFFER_DATA (outbuf); + + /* copy discont flag */ + if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) + GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT); + + GST_BUFFER_TIMESTAMP (outbuf) = timestamp; + GST_BUFFER_DURATION (outbuf) = duration; + + gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mulawenc->srcpad)); + + mulaw_encode (linear_data, mulaw_data, mulaw_size); + + gst_buffer_unref (buffer); + + ret = gst_pad_push (mulawenc->srcpad, outbuf); + +done: + gst_object_unref (mulawenc); + + return ret; + +not_negotiated: + { + GST_DEBUG_OBJECT (mulawenc, "no format negotiated"); + ret = GST_FLOW_NOT_NEGOTIATED; + gst_buffer_unref (buffer); + goto done; + } +alloc_failed: + { + GST_DEBUG_OBJECT (mulawenc, "pad alloc failed"); + gst_buffer_unref (buffer); + goto done; + } +} diff --git a/gst/law/mulaw-encode.h b/gst/law/mulaw-encode.h new file mode 100644 index 0000000..f428c3c --- /dev/null +++ b/gst/law/mulaw-encode.h @@ -0,0 +1,59 @@ +/* GStreamer + * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + + +#ifndef __GST_MULAWENCODE_H__ +#define __GST_MULAWENCODE_H__ + +#include <gst/gst.h> + +G_BEGIN_DECLS + +#define GST_TYPE_MULAWENC \ + (gst_mulawenc_get_type()) +#define GST_MULAWENC(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MULAWENC,GstMuLawEnc)) +#define GST_MULAWENC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MULAWENC,GstMuLawEncClass)) +#define GST_IS_MULAWENC(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULAWENC)) +#define GST_IS_MULAWENC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULAWENC)) + +typedef struct _GstMuLawEnc GstMuLawEnc; +typedef struct _GstMuLawEncClass GstMuLawEncClass; + +struct _GstMuLawEnc { + GstElement element; + + GstPad *sinkpad,*srcpad; + + gint channels; + gint rate; +}; + +struct _GstMuLawEncClass { + GstElementClass parent_class; +}; + +GType gst_mulawenc_get_type(void); + +G_END_DECLS + +#endif /* __GST_STEREO_H__ */ diff --git a/gst/law/mulaw.c b/gst/law/mulaw.c new file mode 100644 index 0000000..e8d9e72 --- /dev/null +++ b/gst/law/mulaw.c @@ -0,0 +1,75 @@ +/* GStreamer PCM/A-Law conversions + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include "mulaw-encode.h" +#include "mulaw-decode.h" + +GstStaticPadTemplate mulaw_dec_src_factory = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-raw-int, " + "rate = (int) [ 8000, 192000 ], " + "channels = (int) [ 1, 2 ], " + "endianness = (int) BYTE_ORDER, " + "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) True") + ); + +GstStaticPadTemplate mulaw_dec_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-mulaw, " + "rate = [ 8000 , 192000 ], " "channels = [ 1 , 2 ]") + ); + +GstStaticPadTemplate mulaw_enc_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-raw-int, " + "rate = (int) [ 8000, 192000 ], " + "channels = (int) [ 1, 2 ], " + "endianness = (int) BYTE_ORDER, " + "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) True") + ); + +GstStaticPadTemplate mulaw_enc_src_factory = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-mulaw, " + "rate = [ 8000 , 192000 ], " "channels = [ 1 , 2 ]") + ); + +static gboolean +plugin_init (GstPlugin * plugin) +{ + if (!gst_element_register (plugin, "mulawenc", + GST_RANK_PRIMARY, GST_TYPE_MULAWENC) || + !gst_element_register (plugin, "mulawdec", + GST_RANK_PRIMARY, GST_TYPE_MULAWDEC)) + return FALSE; + + return TRUE; +} + +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "mulaw", + "MuLaw audio conversion routines", + plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN) |