--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2004> Wim Taymans <wim@fluendo.com>
+ * Copyright (C) <2005> Thomas Vander Stichele <thomas at apestaart dot org>
+ * Copyright (C) <2008> Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * 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.
+ */
+
+/*
+ * Based on the lame element.
+ */
+
+/**
+ * SECTION:element-twolame
+ * @see_also: mad, lame
+ *
+ * This element encodes raw integer audio into an MPEG-1 layer 2 (MP2) stream.
+ *
+ * <refsect2>
+ * <title>Example pipelines</title>
+ * |[
+ * gst-launch -v audiotestsrc wave=sine num-buffers=100 ! audioconvert ! twolame ! filesink location=sine.mp2
+ * ]| Encode a test sine signal to MP2.
+ * |[
+ * gst-launch -v alsasrc ! audioconvert ! twolame bitrate=192 ! filesink location=alsasrc.mp2
+ * ]| Record from a sound card using ALSA and encode to MP2
+ * |[
+ * gst-launch -v filesrc location=music.wav ! decodebin ! audioconvert ! audioresample ! twolame bitrate=192 ! id3v2mux ! filesink location=music.mp2
+ * ]| Transcode from a .wav file to MP2 (the id3v2mux element is optional)
+ * |[
+ * gst-launch -v cdda://5 ! audioconvert ! twolame bitrate=192 ! filesink location=track5.mp2
+ * ]| Encode Audio CD track 5 to MP2
+ * </refsect2>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "string.h"
+#include "gsttwolame.h"
+#include "gst/gst-i18n-plugin.h"
+
+GST_DEBUG_CATEGORY_STATIC (debug);
+#define GST_CAT_DEFAULT debug
+
+/* TwoLAME can do MPEG-1, MPEG-2 so it has 6 possible
+ * sample rates it supports */
+static GstStaticPadTemplate gst_two_lame_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw-int, "
+ "endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", "
+ "signed = (boolean) true, "
+ "width = (int) 16, "
+ "depth = (int) 16, "
+ "rate = (int) { 16000, 22050, 24000, 32000, 44100, 48000 }, "
+ "channels = (int) [ 1, 2 ]")
+ );
+
+static GstStaticPadTemplate gst_two_lame_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/mpeg, "
+ "mpegversion = (int) 1, "
+ "layer = (int) 2, "
+ "rate = (int) { 16000, 22050, 24000, 32000, 44100, 48000 }, "
+ "channels = (int) [ 1, 2 ]")
+ );
+
+static struct
+{
+ gint mode;
+ gint psymodel;
+ gint bitrate;
+ gint padding;
+ gboolean energy_level_extension;
+ gint emphasis;
+ gboolean error_protection;
+ gboolean copyright;
+ gboolean original;
+ gboolean vbr;
+ gfloat vbr_level;
+ gfloat ath_level;
+ gint vbr_max_bitrate;
+ gboolean quick_mode;
+ gint quick_mode_count;
+} gst_two_lame_default_settings;
+
+/********** Define useful types for non-programmatic interfaces **********/
+#define GST_TYPE_TWO_LAME_MODE (gst_two_lame_mode_get_type())
+static GType
+gst_two_lame_mode_get_type (void)
+{
+ static GType two_lame_mode_type = 0;
+ static GEnumValue two_lame_modes[] = {
+ {TWOLAME_AUTO_MODE, "Auto", "auto"},
+ {TWOLAME_STEREO, "Stereo", "stereo"},
+ {TWOLAME_JOINT_STEREO, "Joint Stereo", "joint"},
+ {TWOLAME_DUAL_CHANNEL, "Dual Channel", "dual"},
+ {TWOLAME_MONO, "Mono", "mono"},
+ {0, NULL, NULL}
+ };
+
+ if (!two_lame_mode_type) {
+ two_lame_mode_type =
+ g_enum_register_static ("GstTwoLameMode", two_lame_modes);
+ }
+ return two_lame_mode_type;
+}
+
+#define GST_TYPE_TWO_LAME_PADDING (gst_two_lame_padding_get_type())
+static GType
+gst_two_lame_padding_get_type (void)
+{
+ static GType two_lame_padding_type = 0;
+ static GEnumValue two_lame_padding[] = {
+ {TWOLAME_PAD_NO, "No Padding", "never"},
+ {TWOLAME_PAD_ALL, "Always Pad", "always"},
+ {0, NULL, NULL}
+ };
+
+ if (!two_lame_padding_type) {
+ two_lame_padding_type =
+ g_enum_register_static ("GstTwoLamePadding", two_lame_padding);
+ }
+ return two_lame_padding_type;
+}
+
+#define GST_TYPE_TWO_LAME_EMPHASIS (gst_two_lame_emphasis_get_type())
+static GType
+gst_two_lame_emphasis_get_type (void)
+{
+ static GType two_lame_emphasis_type = 0;
+ static GEnumValue two_lame_emphasis[] = {
+ {TWOLAME_EMPHASIS_N, "No emphasis", "none"},
+ {TWOLAME_EMPHASIS_5, "50/15 ms", "5"},
+ {TWOLAME_EMPHASIS_C, "CCIT J.17", "ccit"},
+ {0, NULL, NULL}
+ };
+
+ if (!two_lame_emphasis_type) {
+ two_lame_emphasis_type =
+ g_enum_register_static ("GstTwoLameEmphasis", two_lame_emphasis);
+ }
+
+ return two_lame_emphasis_type;
+}
+
+/********** Standard stuff for signals and arguments **********/
+
+enum
+{
+ ARG_0,
+ ARG_MODE,
+ ARG_PSYMODEL,
+ ARG_BITRATE,
+ ARG_PADDING,
+ ARG_ENERGY_LEVEL_EXTENSION,
+ ARG_EMPHASIS,
+ ARG_ERROR_PROTECTION,
+ ARG_COPYRIGHT,
+ ARG_ORIGINAL,
+ ARG_VBR,
+ ARG_VBR_LEVEL,
+ ARG_ATH_LEVEL,
+ ARG_VBR_MAX_BITRATE,
+ ARG_QUICK_MODE,
+ ARG_QUICK_MODE_COUNT
+};
+
+static void gst_two_lame_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_two_lame_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static gboolean gst_two_lame_sink_event (GstPad * pad, GstEvent * event);
+static GstFlowReturn gst_two_lame_chain (GstPad * pad, GstBuffer * buf);
+static gboolean gst_two_lame_setup (GstTwoLame * twolame);
+static GstStateChangeReturn gst_two_lame_change_state (GstElement * element,
+ GstStateChange transition);
+
+
+GST_BOILERPLATE (GstTwoLame, gst_two_lame, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_two_lame_release_memory (GstTwoLame * twolame)
+{
+ if (twolame->glopts) {
+ twolame_close (&twolame->glopts);
+ twolame->glopts = NULL;
+ }
+}
+
+static void
+gst_two_lame_finalize (GObject * obj)
+{
+ gst_two_lame_release_memory (GST_TWO_LAME (obj));
+
+ G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+static void
+gst_two_lame_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 (&gst_two_lame_src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_two_lame_sink_template));
+ gst_element_class_set_details_simple (element_class, "TwoLAME mp2 encoder",
+ "Codec/Encoder/Audio",
+ "High-quality free MP2 encoder",
+ "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
+}
+
+static void
+gst_two_lame_class_init (GstTwoLameClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->set_property = gst_two_lame_set_property;
+ gobject_class->get_property = gst_two_lame_get_property;
+ gobject_class->finalize = gst_two_lame_finalize;
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MODE,
+ g_param_spec_enum ("mode", "Mode", "Encoding mode",
+ GST_TYPE_TWO_LAME_MODE, gst_two_lame_default_settings.mode,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PSYMODEL,
+ g_param_spec_int ("psymodel", "Psychoacoustic Model",
+ "Psychoacoustic model used to encode the audio",
+ -1, 4, gst_two_lame_default_settings.psymodel,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BITRATE,
+ g_param_spec_int ("bitrate", "Bitrate (kb/s)",
+ "Bitrate in kbit/sec (8, 16, 24, 32, 40, 48, 56, 64, 80, 96, "
+ "112, 128, 144, 160, 192, 224, 256, 320, 384)",
+ 8, 384, gst_two_lame_default_settings.bitrate,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PADDING,
+ g_param_spec_enum ("padding", "Padding", "Padding type",
+ GST_TYPE_TWO_LAME_PADDING, gst_two_lame_default_settings.padding,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass),
+ ARG_ENERGY_LEVEL_EXTENSION,
+ g_param_spec_boolean ("energy-level-extension", "Energy Level Extension",
+ "Write peak PCM level to each frame",
+ gst_two_lame_default_settings.energy_level_extension,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EMPHASIS,
+ g_param_spec_enum ("emphasis", "Emphasis",
+ "Pre-emphasis to apply to the decoded audio",
+ GST_TYPE_TWO_LAME_EMPHASIS, gst_two_lame_default_settings.emphasis,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ERROR_PROTECTION,
+ g_param_spec_boolean ("error-protection", "Error protection",
+ "Adds checksum to every frame",
+ gst_two_lame_default_settings.error_protection,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_COPYRIGHT,
+ g_param_spec_boolean ("copyright", "Copyright", "Mark as copyright",
+ gst_two_lame_default_settings.copyright,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ORIGINAL,
+ g_param_spec_boolean ("original", "Original", "Mark as original",
+ gst_two_lame_default_settings.original,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR,
+ g_param_spec_boolean ("vbr", "VBR", "Enable variable bitrate mode",
+ gst_two_lame_default_settings.vbr,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_LEVEL,
+ g_param_spec_float ("vbr-level", "VBR Level", "VBR Level",
+ -10.0, 10.0, gst_two_lame_default_settings.vbr_level,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ATH_LEVEL,
+ g_param_spec_float ("ath-level", "ATH Level", "ATH Level in dB",
+ -G_MAXFLOAT, G_MAXFLOAT, gst_two_lame_default_settings.ath_level,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_MAX_BITRATE,
+ g_param_spec_int ("vbr-max-bitrate", "VBR max bitrate",
+ "Specify maximum VBR bitrate (0=off, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, "
+ "112, 128, 144, 160, 192, 224, 256, 320, 384)",
+ 0, 384, gst_two_lame_default_settings.vbr_max_bitrate,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUICK_MODE,
+ g_param_spec_boolean ("quick-mode", "Quick mode",
+ "Calculate Psymodel every frames",
+ gst_two_lame_default_settings.quick_mode,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUICK_MODE_COUNT,
+ g_param_spec_int ("quick-mode-count", "Quick mode count",
+ "Calculate Psymodel every n frames",
+ 0, G_MAXINT, gst_two_lame_default_settings.quick_mode_count,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_two_lame_change_state);
+}
+
+static gboolean
+gst_two_lame_src_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GST_DEBUG_OBJECT (pad, "caps: %" GST_PTR_FORMAT, caps);
+ return TRUE;
+}
+
+static gboolean
+gst_two_lame_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstTwoLame *twolame;
+ gint out_samplerate;
+ gint version;
+ GstStructure *structure;
+ GstCaps *othercaps;
+
+ twolame = GST_TWO_LAME (GST_PAD_PARENT (pad));
+ structure = gst_caps_get_structure (caps, 0);
+
+ if (!gst_structure_get_int (structure, "rate", &twolame->samplerate))
+ goto no_rate;
+ if (!gst_structure_get_int (structure, "channels", &twolame->num_channels))
+ goto no_channels;
+
+ GST_DEBUG_OBJECT (twolame, "setting up twolame");
+ if (!gst_two_lame_setup (twolame))
+ goto setup_failed;
+
+ out_samplerate = twolame_get_out_samplerate (twolame->glopts);
+ if (out_samplerate == 0)
+ goto zero_output_rate;
+
+ if (out_samplerate != twolame->samplerate) {
+ GST_WARNING_OBJECT (twolame,
+ "output samplerate %d is different from incoming samplerate %d",
+ out_samplerate, twolame->samplerate);
+ }
+
+ version = twolame_get_version (twolame->glopts);
+ if (version == TWOLAME_MPEG2)
+ version = 2;
+ else
+ version = 1;
+
+ othercaps =
+ gst_caps_new_simple ("audio/mpeg",
+ "mpegversion", G_TYPE_INT, 1,
+ "mpegaudioversion", G_TYPE_INT, version,
+ "layer", G_TYPE_INT, 2,
+ "channels", G_TYPE_INT,
+ twolame->mode == TWOLAME_MONO ? 1 : twolame->num_channels, "rate",
+ G_TYPE_INT, out_samplerate, NULL);
+
+ /* and use these caps */
+ gst_pad_set_caps (twolame->srcpad, othercaps);
+ gst_caps_unref (othercaps);
+
+ return TRUE;
+
+no_rate:
+ {
+ GST_ERROR_OBJECT (twolame, "input caps have no sample rate field");
+ return FALSE;
+ }
+no_channels:
+ {
+ GST_ERROR_OBJECT (twolame, "input caps have no channels field");
+ return FALSE;
+ }
+zero_output_rate:
+ {
+ GST_ELEMENT_ERROR (twolame, LIBRARY, SETTINGS, (NULL),
+ ("TwoLAME decided on a zero sample rate"));
+ return FALSE;
+ }
+setup_failed:
+ {
+ GST_ELEMENT_ERROR (twolame, LIBRARY, SETTINGS,
+ (_("Failed to configure TwoLAME encoder. Check your encoding parameters.")), (NULL));
+ return FALSE;
+ }
+}
+
+static void
+gst_two_lame_init (GstTwoLame * twolame, GstTwoLameClass * klass)
+{
+ GST_DEBUG_OBJECT (twolame, "starting initialization");
+
+ twolame->sinkpad =
+ gst_pad_new_from_static_template (&gst_two_lame_sink_template, "sink");
+ gst_pad_set_event_function (twolame->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_two_lame_sink_event));
+ gst_pad_set_chain_function (twolame->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_two_lame_chain));
+ gst_pad_set_setcaps_function (twolame->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_two_lame_sink_setcaps));
+ gst_element_add_pad (GST_ELEMENT (twolame), twolame->sinkpad);
+
+ twolame->srcpad =
+ gst_pad_new_from_static_template (&gst_two_lame_src_template, "src");
+ gst_pad_set_setcaps_function (twolame->srcpad,
+ GST_DEBUG_FUNCPTR (gst_two_lame_src_setcaps));
+ gst_element_add_pad (GST_ELEMENT (twolame), twolame->srcpad);
+
+ twolame->samplerate = 44100;
+ twolame->num_channels = 2;
+ twolame->setup = FALSE;
+
+ twolame->mode = gst_two_lame_default_settings.mode;
+ twolame->psymodel = gst_two_lame_default_settings.psymodel;
+ twolame->bitrate = gst_two_lame_default_settings.bitrate;
+ twolame->padding = gst_two_lame_default_settings.padding;
+ twolame->energy_level_extension =
+ gst_two_lame_default_settings.energy_level_extension;
+ twolame->emphasis = gst_two_lame_default_settings.emphasis;
+ twolame->error_protection = gst_two_lame_default_settings.error_protection;
+ twolame->copyright = gst_two_lame_default_settings.copyright;
+ twolame->original = gst_two_lame_default_settings.original;
+ twolame->vbr = gst_two_lame_default_settings.vbr;
+ twolame->vbr_level = gst_two_lame_default_settings.vbr_level;
+ twolame->ath_level = gst_two_lame_default_settings.ath_level;
+ twolame->vbr_max_bitrate = gst_two_lame_default_settings.vbr_max_bitrate;
+ twolame->quick_mode = gst_two_lame_default_settings.quick_mode;
+ twolame->quick_mode_count = gst_two_lame_default_settings.quick_mode_count;
+
+ GST_DEBUG_OBJECT (twolame, "done initializing");
+}
+
+/* <php-emulation-mode>three underscores for ___rate is really really really
+ * private as opposed to one underscore<php-emulation-mode> */
+/* call this MACRO outside of the NULL state so that we have a higher chance
+ * of actually having a pipeline and bus to get the message through */
+
+#define CHECK_AND_FIXUP_BITRATE(obj,param,rate) \
+G_STMT_START { \
+ gint ___rate = rate; \
+ gint maxrate = 320; \
+ gint multiplier = 64; \
+ if (rate <= 64) { \
+ maxrate = 64; multiplier = 8; \
+ if ((rate % 8) != 0) ___rate = GST_ROUND_UP_8 (rate); \
+ } else if (rate <= 144) { \
+ maxrate = 144; multiplier = 16; \
+ if ((rate % 16) != 0) ___rate = GST_ROUND_UP_16 (rate); \
+ } else if (rate <= 256) { \
+ maxrate = 256; multiplier = 32; \
+ if ((rate % 32) != 0) ___rate = GST_ROUND_UP_32 (rate); \
+ } else if (rate <= 384) { \
+ maxrate = 384; multiplier = 64; \
+ if ((rate % 64) != 0) ___rate = GST_ROUND_UP_64 (rate); \
+ } \
+ if (___rate != rate) { \
+ GST_ELEMENT_WARNING (obj, LIBRARY, SETTINGS, \
+ (_("The requested bitrate %d kbit/s for property '%s' " \
+ "is not allowed. " \
+ "The bitrate was changed to %d kbit/s."), rate, \
+ param, ___rate), \
+ ("A bitrate below %d should be a multiple of %d.", \
+ maxrate, multiplier)); \
+ rate = ___rate; \
+ } \
+} G_STMT_END
+
+static void
+gst_two_lame_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstTwoLame *twolame = GST_TWO_LAME (object);
+
+ switch (prop_id) {
+ case ARG_MODE:
+ twolame->mode = g_value_get_enum (value);
+ break;
+ case ARG_PSYMODEL:
+ twolame->psymodel = g_value_get_int (value);
+ break;
+ case ARG_BITRATE:
+ twolame->bitrate = g_value_get_int (value);
+ break;
+ case ARG_PADDING:
+ twolame->padding = g_value_get_enum (value);
+ break;
+ case ARG_ENERGY_LEVEL_EXTENSION:
+ twolame->energy_level_extension = g_value_get_boolean (value);
+ break;
+ case ARG_EMPHASIS:
+ twolame->emphasis = g_value_get_enum (value);
+ break;
+ case ARG_ERROR_PROTECTION:
+ twolame->error_protection = g_value_get_boolean (value);
+ break;
+ case ARG_COPYRIGHT:
+ twolame->copyright = g_value_get_boolean (value);
+ break;
+ case ARG_ORIGINAL:
+ twolame->original = g_value_get_boolean (value);
+ break;
+ case ARG_VBR:
+ twolame->vbr = g_value_get_boolean (value);
+ break;
+ case ARG_VBR_LEVEL:
+ twolame->vbr_level = g_value_get_float (value);
+ break;
+ case ARG_ATH_LEVEL:
+ twolame->ath_level = g_value_get_float (value);
+ break;
+ case ARG_VBR_MAX_BITRATE:
+ twolame->vbr_max_bitrate = g_value_get_int (value);
+ break;
+ case ARG_QUICK_MODE:
+ twolame->quick_mode = g_value_get_boolean (value);
+ break;
+ case ARG_QUICK_MODE_COUNT:
+ twolame->quick_mode_count = g_value_get_int (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_two_lame_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstTwoLame *twolame = GST_TWO_LAME (object);
+
+ switch (prop_id) {
+ case ARG_MODE:
+ g_value_set_enum (value, twolame->mode);
+ break;
+ case ARG_PSYMODEL:
+ g_value_set_int (value, twolame->psymodel);
+ break;
+ case ARG_BITRATE:
+ g_value_set_int (value, twolame->bitrate);
+ break;
+ case ARG_PADDING:
+ g_value_set_enum (value, twolame->padding);
+ break;
+ case ARG_ENERGY_LEVEL_EXTENSION:
+ g_value_set_boolean (value, twolame->energy_level_extension);
+ break;
+ case ARG_EMPHASIS:
+ g_value_set_enum (value, twolame->emphasis);
+ break;
+ case ARG_ERROR_PROTECTION:
+ g_value_set_boolean (value, twolame->error_protection);
+ break;
+ case ARG_COPYRIGHT:
+ g_value_set_boolean (value, twolame->copyright);
+ break;
+ case ARG_ORIGINAL:
+ g_value_set_boolean (value, twolame->original);
+ break;
+ case ARG_VBR:
+ g_value_set_boolean (value, twolame->vbr);
+ break;
+ case ARG_VBR_LEVEL:
+ g_value_set_float (value, twolame->vbr_level);
+ break;
+ case ARG_ATH_LEVEL:
+ g_value_set_float (value, twolame->ath_level);
+ break;
+ case ARG_VBR_MAX_BITRATE:
+ g_value_set_int (value, twolame->vbr_max_bitrate);
+ break;
+ case ARG_QUICK_MODE:
+ g_value_set_boolean (value, twolame->quick_mode);
+ break;
+ case ARG_QUICK_MODE_COUNT:
+ g_value_set_int (value, twolame->quick_mode_count);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static gboolean
+gst_two_lame_sink_event (GstPad * pad, GstEvent * event)
+{
+ gboolean ret;
+ GstTwoLame *twolame;
+
+ twolame = GST_TWO_LAME (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_EOS:{
+ GST_DEBUG_OBJECT (twolame, "handling EOS event");
+
+ if (twolame->glopts != NULL) {
+ GstBuffer *buf;
+ gint size;
+
+ buf = gst_buffer_new_and_alloc (16384);
+ size =
+ twolame_encode_flush (twolame->glopts, GST_BUFFER_DATA (buf),
+ 16394);
+
+ if (size > 0 && twolame->last_flow == GST_FLOW_OK) {
+ gint64 duration;
+
+ duration = gst_util_uint64_scale (size, 8 * GST_SECOND,
+ 1000 * twolame->bitrate);
+
+ if (twolame->last_ts == GST_CLOCK_TIME_NONE) {
+ twolame->last_ts = twolame->eos_ts;
+ twolame->last_duration = duration;
+ } else {
+ twolame->last_duration += duration;
+ }
+
+ GST_BUFFER_TIMESTAMP (buf) = twolame->last_ts;
+ GST_BUFFER_DURATION (buf) = twolame->last_duration;
+ twolame->last_ts = GST_CLOCK_TIME_NONE;
+ GST_BUFFER_SIZE (buf) = size;
+ GST_DEBUG_OBJECT (twolame, "pushing final packet of %u bytes", size);
+ gst_buffer_set_caps (buf, GST_PAD_CAPS (twolame->srcpad));
+ gst_pad_push (twolame->srcpad, buf);
+ } else {
+ GST_DEBUG_OBJECT (twolame, "no final packet (size=%d, last_flow=%s)",
+ size, gst_flow_get_name (twolame->last_flow));
+ gst_buffer_unref (buf);
+ }
+ }
+
+ ret = gst_pad_event_default (pad, event);
+ break;
+ }
+ case GST_EVENT_FLUSH_START:
+ GST_DEBUG_OBJECT (twolame, "handling FLUSH start event");
+ /* forward event */
+ ret = gst_pad_push_event (twolame->srcpad, event);
+ break;
+ case GST_EVENT_FLUSH_STOP:
+ {
+ guchar *mp3_data = NULL;
+ gint mp3_buffer_size, mp3_size = 0;
+
+ GST_DEBUG_OBJECT (twolame, "handling FLUSH stop event");
+
+ /* clear buffers */
+ mp3_buffer_size = 16384;
+ mp3_data = g_malloc (mp3_buffer_size);
+ mp3_size =
+ twolame_encode_flush (twolame->glopts, mp3_data, mp3_buffer_size);
+
+ ret = gst_pad_push_event (twolame->srcpad, event);
+
+ g_free (mp3_data);
+ break;
+ }
+ default:
+ ret = gst_pad_event_default (pad, event);
+ break;
+ }
+ gst_object_unref (twolame);
+
+ return ret;
+}
+
+static GstFlowReturn
+gst_two_lame_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstTwoLame *twolame;
+ guchar *mp3_data;
+ gint mp3_buffer_size, mp3_size;
+ gint64 duration;
+ GstFlowReturn result;
+ gint num_samples;
+ guint8 *data;
+ guint size;
+
+ twolame = GST_TWO_LAME (GST_PAD_PARENT (pad));
+
+ GST_LOG_OBJECT (twolame, "entered chain");
+
+ if (!twolame->setup)
+ goto not_setup;
+
+ data = GST_BUFFER_DATA (buf);
+ size = GST_BUFFER_SIZE (buf);
+
+ num_samples = size / 2;
+
+ /* allocate space for output */
+ mp3_buffer_size = 1.25 * num_samples + 16384;
+ mp3_data = g_malloc (mp3_buffer_size);
+
+ if (twolame->num_channels == 1) {
+ mp3_size = twolame_encode_buffer (twolame->glopts,
+ (short int *) data,
+ (short int *) data, num_samples, mp3_data, mp3_buffer_size);
+ } else {
+ mp3_size = twolame_encode_buffer_interleaved (twolame->glopts,
+ (short int *) data,
+ num_samples / twolame->num_channels, mp3_data, mp3_buffer_size);
+ }
+
+ GST_LOG_OBJECT (twolame, "encoded %d bytes of audio to %d bytes of mp3",
+ size, mp3_size);
+
+ duration = gst_util_uint64_scale_int (size, GST_SECOND,
+ 2 * twolame->samplerate * twolame->num_channels);
+
+ if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE &&
+ GST_BUFFER_DURATION (buf) != duration) {
+ GST_DEBUG_OBJECT (twolame, "incoming buffer had incorrect duration %"
+ GST_TIME_FORMAT ", outgoing buffer will have correct duration %"
+ GST_TIME_FORMAT,
+ GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_TIME_ARGS (duration));
+ }
+
+ if (twolame->last_ts == GST_CLOCK_TIME_NONE) {
+ twolame->last_ts = GST_BUFFER_TIMESTAMP (buf);
+ twolame->last_offs = GST_BUFFER_OFFSET (buf);
+ twolame->last_duration = duration;
+ } else {
+ twolame->last_duration += duration;
+ }
+
+ gst_buffer_unref (buf);
+
+ if (mp3_size < 0) {
+ g_warning ("error %d", mp3_size);
+ }
+
+ if (mp3_size > 0) {
+ GstBuffer *outbuf;
+
+ outbuf = gst_buffer_new ();
+ GST_BUFFER_DATA (outbuf) = mp3_data;
+ GST_BUFFER_MALLOCDATA (outbuf) = mp3_data;
+ GST_BUFFER_SIZE (outbuf) = mp3_size;
+ GST_BUFFER_TIMESTAMP (outbuf) = twolame->last_ts;
+ GST_BUFFER_OFFSET (outbuf) = twolame->last_offs;
+ GST_BUFFER_DURATION (outbuf) = twolame->last_duration;
+ gst_buffer_set_caps (outbuf, GST_PAD_CAPS (twolame->srcpad));
+
+ result = gst_pad_push (twolame->srcpad, outbuf);
+ twolame->last_flow = result;
+ if (result != GST_FLOW_OK) {
+ GST_DEBUG_OBJECT (twolame, "flow return: %s", gst_flow_get_name (result));
+ }
+
+ if (GST_CLOCK_TIME_IS_VALID (twolame->last_ts))
+ twolame->eos_ts = twolame->last_ts + twolame->last_duration;
+ else
+ twolame->eos_ts = GST_CLOCK_TIME_NONE;
+ twolame->last_ts = GST_CLOCK_TIME_NONE;
+ } else {
+ g_free (mp3_data);
+ result = GST_FLOW_OK;
+ }
+
+ return result;
+
+ /* ERRORS */
+not_setup:
+ {
+ gst_buffer_unref (buf);
+ GST_ELEMENT_ERROR (twolame, CORE, NEGOTIATION, (NULL),
+ ("encoder not initialized (input is not audio?)"));
+ return GST_FLOW_ERROR;
+ }
+}
+
+/* set up the encoder state */
+static gboolean
+gst_two_lame_setup (GstTwoLame * twolame)
+{
+
+#define CHECK_ERROR(command) G_STMT_START {\
+ if ((command) < 0) { \
+ GST_ERROR_OBJECT (twolame, "setup failed: " G_STRINGIFY (command)); \
+ return FALSE; \
+ } \
+}G_STMT_END
+
+ int retval;
+ GstCaps *allowed_caps;
+
+ GST_DEBUG_OBJECT (twolame, "starting setup");
+
+ /* check if we're already setup; if we are, we might want to check
+ * if this initialization is compatible with the previous one */
+ /* FIXME: do this */
+ if (twolame->setup) {
+ GST_WARNING_OBJECT (twolame, "already setup");
+ twolame->setup = FALSE;
+ }
+
+ twolame->glopts = twolame_init ();
+
+ if (twolame->glopts == NULL)
+ return FALSE;
+
+ /* copy the parameters over */
+ twolame_set_in_samplerate (twolame->glopts, twolame->samplerate);
+
+ /* let twolame choose default samplerate unless outgoing sample rate is fixed */
+ allowed_caps = gst_pad_get_allowed_caps (twolame->srcpad);
+
+ if (allowed_caps != NULL) {
+ GstStructure *structure;
+ gint samplerate;
+
+ structure = gst_caps_get_structure (allowed_caps, 0);
+
+ if (gst_structure_get_int (structure, "rate", &samplerate)) {
+ GST_DEBUG_OBJECT (twolame,
+ "Setting sample rate to %d as fixed in src caps", samplerate);
+ twolame_set_out_samplerate (twolame->glopts, samplerate);
+ } else {
+ GST_DEBUG_OBJECT (twolame, "Letting twolame choose sample rate");
+ twolame_set_out_samplerate (twolame->glopts, 0);
+ }
+ gst_caps_unref (allowed_caps);
+ allowed_caps = NULL;
+ } else {
+ GST_DEBUG_OBJECT (twolame,
+ "No peer yet, letting twolame choose sample rate");
+ twolame_set_out_samplerate (twolame->glopts, 0);
+ }
+
+ /* force mono encoding if we only have one channel */
+ if (twolame->num_channels == 1)
+ twolame->mode = 3;
+
+ /* Fix bitrates and MPEG version */
+
+ CHECK_ERROR (twolame_set_num_channels (twolame->glopts,
+ twolame->num_channels));
+
+ CHECK_ERROR (twolame_set_mode (twolame->glopts, twolame->mode));
+ CHECK_ERROR (twolame_set_psymodel (twolame->glopts, twolame->psymodel));
+ CHECK_AND_FIXUP_BITRATE (twolame, "bitrate", twolame->bitrate);
+ CHECK_ERROR (twolame_set_bitrate (twolame->glopts, twolame->bitrate));
+ CHECK_ERROR (twolame_set_padding (twolame->glopts, twolame->padding));
+ CHECK_ERROR (twolame_set_energy_levels (twolame->glopts,
+ twolame->energy_level_extension));
+ CHECK_ERROR (twolame_set_emphasis (twolame->glopts, twolame->emphasis));
+ CHECK_ERROR (twolame_set_error_protection (twolame->glopts,
+ twolame->error_protection));
+ CHECK_ERROR (twolame_set_copyright (twolame->glopts, twolame->copyright));
+ CHECK_ERROR (twolame_set_original (twolame->glopts, twolame->original));
+ CHECK_ERROR (twolame_set_VBR (twolame->glopts, twolame->vbr));
+ CHECK_ERROR (twolame_set_VBR_level (twolame->glopts, twolame->vbr_level));
+ CHECK_ERROR (twolame_set_ATH_level (twolame->glopts, twolame->ath_level));
+ CHECK_AND_FIXUP_BITRATE (twolame, "vbr-max-bitrate",
+ twolame->vbr_max_bitrate);
+ CHECK_ERROR (twolame_set_VBR_max_bitrate_kbps (twolame->glopts,
+ twolame->vbr_max_bitrate));
+ CHECK_ERROR (twolame_set_quick_mode (twolame->glopts, twolame->quick_mode));
+ CHECK_ERROR (twolame_set_quick_count (twolame->glopts,
+ twolame->quick_mode_count));
+
+ /* initialize the twolame encoder */
+ if ((retval = twolame_init_params (twolame->glopts)) >= 0) {
+ twolame->setup = TRUE;
+ /* FIXME: it would be nice to print out the mode here */
+ GST_INFO ("twolame encoder setup (%d kbit/s, %d Hz, %d channels)",
+ twolame->bitrate, twolame->samplerate, twolame->num_channels);
+ } else {
+ GST_ERROR_OBJECT (twolame, "twolame_init_params returned %d", retval);
+ }
+
+ GST_DEBUG_OBJECT (twolame, "done with setup");
+
+ return twolame->setup;
+#undef CHECK_ERROR
+}
+
+static GstStateChangeReturn
+gst_two_lame_change_state (GstElement * element, GstStateChange transition)
+{
+ GstTwoLame *twolame;
+ GstStateChangeReturn result;
+
+ twolame = GST_TWO_LAME (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ twolame->last_flow = GST_FLOW_OK;
+ twolame->last_ts = GST_CLOCK_TIME_NONE;
+ twolame->eos_ts = GST_CLOCK_TIME_NONE;
+ break;
+ default:
+ break;
+ }
+
+ result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ gst_two_lame_release_memory (twolame);
+ break;
+ default:
+ break;
+ }
+
+ return result;
+}
+
+static gboolean
+gst_two_lame_get_default_settings (void)
+{
+ twolame_options *glopts = NULL;
+
+ glopts = twolame_init ();
+ if (glopts == NULL) {
+ GST_ERROR ("Couldn't initialize TwoLAME");
+ return FALSE;
+ }
+
+ twolame_set_num_channels (glopts, 2);
+ twolame_set_in_samplerate (glopts, 44100);
+
+ if (twolame_init_params (glopts) != 0) {
+ GST_ERROR ("Couldn't set default parameters");
+ return FALSE;
+ }
+
+ gst_two_lame_default_settings.mode = TWOLAME_JOINT_STEREO; /* twolame_get_mode (glopts); */
+ gst_two_lame_default_settings.psymodel = twolame_get_psymodel (glopts);
+ gst_two_lame_default_settings.bitrate = twolame_get_bitrate (glopts);
+ gst_two_lame_default_settings.padding = twolame_get_padding (glopts);
+ gst_two_lame_default_settings.energy_level_extension =
+ twolame_get_energy_levels (glopts);
+ gst_two_lame_default_settings.emphasis = twolame_get_emphasis (glopts);
+ gst_two_lame_default_settings.error_protection =
+ twolame_get_error_protection (glopts);
+ gst_two_lame_default_settings.copyright = twolame_get_copyright (glopts);
+ gst_two_lame_default_settings.original = twolame_get_original (glopts);
+ gst_two_lame_default_settings.vbr = twolame_get_VBR (glopts);
+ gst_two_lame_default_settings.vbr_level = twolame_get_VBR_level (glopts);
+ gst_two_lame_default_settings.ath_level = twolame_get_ATH_level (glopts);
+ gst_two_lame_default_settings.vbr_max_bitrate =
+ twolame_get_VBR_max_bitrate_kbps (glopts);
+ gst_two_lame_default_settings.quick_mode = twolame_get_quick_mode (glopts);
+ gst_two_lame_default_settings.quick_mode_count =
+ twolame_get_quick_count (glopts);
+
+ twolame_close (&glopts);
+
+ return TRUE;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (debug, "twolame", 0, "twolame mp2 encoder");
+
+ if (!gst_two_lame_get_default_settings ())
+ return FALSE;
+
+#ifdef ENABLE_NLS
+ GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
+ LOCALEDIR);
+ bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+#endif /* ENABLE_NLS */
+
+ if (!gst_element_register (plugin, "twolame", GST_RANK_NONE,
+ GST_TYPE_TWO_LAME))
+ return FALSE;
+
+ return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "twolame",
+ "Encode MP2s with TwoLAME",
+ plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
projects / platform / upstream / gstreamer.git / commitdiff