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gstreamer/ext/lame/gstlame.c
Christian Schaller 070ba3799a fix license field of lame plugin to say LGPL, lame is LGPL. Add Readme with info 
Original commit message from CVS:
fix license field of lame plugin to say LGPL, lame is LGPL. Add Readme with info
2003-07-10 15:39:11 +00:00

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/* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "string.h"
#include "gstlame.h"
/* elementfactory information */
static GstElementDetails gst_lame_details =
{
"L.A.M.E. mp3 encoder",
"Codec/Audio/Encoder",
"LGPL",
"High-quality free MP3 encoder",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 2000",
};
GST_PAD_TEMPLATE_FACTORY (gst_lame_sink_factory,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"gstlame_sink",
"audio/x-raw-int",
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_BOOLEAN (TRUE),
"width", GST_PROPS_INT (16),
"depth", GST_PROPS_INT (16),
"rate", GST_PROPS_LIST (
GST_PROPS_INT (8000),
GST_PROPS_INT (11025),
GST_PROPS_INT (12000),
GST_PROPS_INT (16000),
GST_PROPS_INT (22050),
GST_PROPS_INT (24000),
GST_PROPS_INT (32000),
GST_PROPS_INT (44100),
GST_PROPS_INT (48000)
),
"channels", GST_PROPS_INT_RANGE (1, 2)
)
)
GST_PAD_TEMPLATE_FACTORY (gst_lame_src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"gstlame_src",
"audio/mpeg",
"layer", GST_PROPS_INT (3),
"rate", GST_PROPS_LIST (
GST_PROPS_INT (8000),
GST_PROPS_INT (11025),
GST_PROPS_INT (12000),
GST_PROPS_INT (16000),
GST_PROPS_INT (22050),
GST_PROPS_INT (24000),
GST_PROPS_INT (32000),
GST_PROPS_INT (44100),
GST_PROPS_INT (48000)
),
"channels", GST_PROPS_INT_RANGE (1, 2)
)
)
/********** Define useful types for non-programmatic interfaces **********/
#define GST_TYPE_LAME_MODE (gst_lame_mode_get_type())
static GType
gst_lame_mode_get_type (void)
{
static GType lame_mode_type = 0;
static GEnumValue lame_modes[] = {
{ 0, "0", "Stereo" },
{ 1, "1", "Joint-Stereo" },
{ 2, "2", "Dual channel" },
{ 3, "3", "Mono" },
{ 4, "4", "Auto" },
{ 0, NULL, NULL },
};
if (!lame_mode_type) {
lame_mode_type = g_enum_register_static ("GstLameMode", lame_modes);
}
return lame_mode_type;
}
#define GST_TYPE_LAME_QUALITY (gst_lame_quality_get_type())
static GType
gst_lame_quality_get_type (void)
{
static GType lame_quality_type = 0;
static GEnumValue lame_quality[] = {
{ 0, "0", "0 - Best" },
{ 1, "1", "1" },
{ 2, "2", "2" },
{ 3, "3", "3" },
{ 4, "4", "4" },
{ 5, "5", "5 - Default" },
{ 6, "6", "6" },
{ 7, "7", "7" },
{ 8, "8", "8" },
{ 9, "9", "9 - Worst" },
{ 0, NULL, NULL },
};
if (!lame_quality_type) {
lame_quality_type = g_enum_register_static ("GstLameQuality", lame_quality);
}
return lame_quality_type;
}
#define GST_TYPE_LAME_PADDING (gst_lame_padding_get_type())
static GType
gst_lame_padding_get_type (void)
{
static GType lame_padding_type = 0;
static GEnumValue lame_padding[] = {
{ 0, "0", "No Padding" },
{ 1, "1", "Always Pad" },
{ 2, "2", "Adjust Padding" },
{ 0, NULL, NULL },
};
if (!lame_padding_type) {
lame_padding_type = g_enum_register_static ("GstLamePadding", lame_padding);
}
return lame_padding_type;
}
/********** Standard stuff for signals and arguments **********/
/* GstLame signals and args */
enum {
/* FILL_ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BITRATE,
ARG_COMPRESSION_RATIO,
ARG_QUALITY,
ARG_MODE,
ARG_FORCE_MS,
ARG_FREE_FORMAT,
ARG_COPYRIGHT,
ARG_ORIGINAL,
ARG_ERROR_PROTECTION,
ARG_PADDING_TYPE,
ARG_EXTENSION,
ARG_STRICT_ISO,
ARG_DISABLE_RESERVOIR,
ARG_VBR,
ARG_VBR_MEAN_BITRATE,
ARG_VBR_MIN_BITRATE,
ARG_VBR_MAX_BITRATE,
ARG_VBR_HARD_MIN,
ARG_LOWPASS_FREQ,
ARG_LOWPASS_WIDTH,
ARG_HIGHPASS_FREQ,
ARG_HIGHPASS_WIDTH,
ARG_ATH_ONLY,
ARG_ATH_SHORT,
ARG_NO_ATH,
ARG_ATH_LOWER,
ARG_CWLIMIT,
ARG_ALLOW_DIFF_SHORT,
ARG_NO_SHORT_BLOCKS,
ARG_EMPHASIS,
ARG_METADATA,
};
static void gst_lame_class_init (GstLameClass *klass);
static void gst_lame_init (GstLame *gst_lame);
static void gst_lame_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_lame_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static void gst_lame_chain (GstPad *pad, GstBuffer *buf);
static gboolean gst_lame_setup (GstLame *lame);
static GstElementStateReturn gst_lame_change_state (GstElement *element);
static GstElementClass *parent_class = NULL;
/* static guint gst_lame_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_lame_get_type (void)
{
static GType gst_lame_type = 0;
if (!gst_lame_type) {
static const GTypeInfo gst_lame_info = {
sizeof (GstLameClass),
NULL,
NULL,
(GClassInitFunc) gst_lame_class_init,
NULL,
NULL,
sizeof(GstLame),
0,
(GInstanceInitFunc) gst_lame_init,
};
gst_lame_type = g_type_register_static (GST_TYPE_ELEMENT, "GstLame", &gst_lame_info, 0);
}
return gst_lame_type;
}
static void
gst_lame_class_init (GstLameClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BITRATE,
g_param_spec_int("bitrate", "Bitrate (kb/s)", "Bitrate in kbit/sec",
8, 320, 128, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_COMPRESSION_RATIO,
g_param_spec_float ("compression_ratio", "Compression Ratio",
"choose bitrate to achive selected compression ratio",
1.0, 200.0, 11.0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUALITY,
g_param_spec_enum ("quality", "Quality", "Encoding Quality",
GST_TYPE_LAME_QUALITY, 5, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MODE,
g_param_spec_enum ("mode", "Mode", "Encoding mode",
GST_TYPE_LAME_MODE, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FORCE_MS,
g_param_spec_boolean ("force_ms","Force ms","Force ms_stereo on all frames",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FREE_FORMAT,
g_param_spec_boolean ("free_format","Free format","Produce a free format bitstream",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_COPYRIGHT,
g_param_spec_boolean ("copyright","Copyright","Mark as copyright",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ORIGINAL,
g_param_spec_boolean("original", "Original", "Mark as non-original",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ERROR_PROTECTION,
g_param_spec_boolean ("error_protection","Error protection",
"Adds 16 bit checksum to every frame",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PADDING_TYPE,
g_param_spec_enum ("padding_type", "Padding type", "Padding type",
GST_TYPE_LAME_PADDING, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EXTENSION,
g_param_spec_boolean ("extension", "Extension", "Extension",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_STRICT_ISO,
g_param_spec_boolean ("strict_iso", "Strict ISO",
"Comply as much as possible to ISO MPEG spec",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DISABLE_RESERVOIR,
g_param_spec_boolean ("disable_reservoir", "Disable reservoir", "Disable the bit reservoir",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR,
g_param_spec_boolean ("vbr", "VBR", "Use variable bitrate",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_MEAN_BITRATE,
g_param_spec_int ("vbr_mean_bitrate", "VBR mean bitrate", "Specify mean bitrate",
0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_MIN_BITRATE,
g_param_spec_int ("vbr_min_bitrate", "VBR min bitrate", "Specify min bitrate",
0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VBR_MAX_BITRATE,
g_param_spec_int ("vbr_max_bitrate", "VBR max bitrate", "Specify max bitrate",
0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VBR_HARD_MIN,
g_param_spec_int ("vbr_hard_min", "VBR hard min", "Specify hard min bitrate",
0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOWPASS_FREQ,
g_param_spec_int ("lowpass_freq", "Lowpass freq",
"frequency(kHz), lowpass filter cutoff above freq",
0, 50000, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOWPASS_WIDTH,
g_param_spec_int ("lowpass_width", "Lowpass width",
"frequency(kHz) - default 15% of lowpass freq",
0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HIGHPASS_FREQ,
g_param_spec_int ("highpass_freq", "Highpass freq",
"frequency(kHz), highpass filter cutoff below freq",
0, 50000, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HIGHPASS_WIDTH,
g_param_spec_int ("highpass_width", "Highpass width",
"frequency(kHz) - default 15% of highpass freq",
0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ATH_ONLY,
g_param_spec_boolean ("ath_only", "ATH only",
"Ignore GPSYCHO completely, use ATH only",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ATH_SHORT,
g_param_spec_boolean ("ath_short", "ATH short",
"Ignore GPSYCHO for short blocks, use ATH only",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NO_ATH,
g_param_spec_boolean ("no_ath", "No ath", "turns ATH down to a flat noise floor",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ATH_LOWER,
g_param_spec_int ("ath_lower", "ATH lower", "lowers ATH by x dB",
G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CWLIMIT,
g_param_spec_int ("cwlimit", "Cwlimit", "Compute tonality up to freq (in kHz) default 8.8717",
0, 50000, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ALLOW_DIFF_SHORT,
g_param_spec_boolean ("allow_diff_short", "Allow diff short", "Allow diff short",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NO_SHORT_BLOCKS,
g_param_spec_boolean ("no_short_blocks", "No short blocks", "Do not use short blocks",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EMPHASIS,
g_param_spec_boolean ("emphasis", "Emphasis", "Emphasis",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_METADATA,
g_param_spec_boxed ("metadata", "Metadata", "Metadata to add to the stream,",
GST_TYPE_CAPS, G_PARAM_READWRITE));
gobject_class->set_property = gst_lame_set_property;
gobject_class->get_property = gst_lame_get_property;
gstelement_class->change_state = gst_lame_change_state;
}
static GstPadLinkReturn
gst_lame_sinkconnect (GstPad *pad, GstCaps *caps)
{
GstLame *lame;
lame = GST_LAME (gst_pad_get_parent (pad));
if (!GST_CAPS_IS_FIXED (caps)) {
GST_DEBUG ("caps on lame pad %s:%s not fixed, delayed",
GST_DEBUG_PAD_NAME (pad));
return GST_PAD_LINK_DELAYED;
}
gst_caps_get_int (caps, "rate", &lame->samplerate);
gst_caps_get_int (caps, "channels", &lame->num_channels);
if (!gst_lame_setup (lame)) {
gst_element_error (GST_ELEMENT (lame),
"could not initialize encoder (wrong parameters?)");
return GST_PAD_LINK_REFUSED;
}
caps = GST_CAPS_NEW ("lame_src_caps",
"audio/mpeg",
"layer", GST_PROPS_INT (3),
"channels", GST_PROPS_INT (lame->num_channels),
"rate", GST_PROPS_INT (lame->samplerate));
return gst_pad_try_set_caps (lame->srcpad, caps);
}
static void
gst_lame_init (GstLame *lame)
{
GST_DEBUG_OBJECT (lame, "starting initialization");
lame->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (gst_lame_sink_factory), "sink");
gst_element_add_pad (GST_ELEMENT (lame), lame->sinkpad);
gst_pad_set_chain_function (lame->sinkpad, gst_lame_chain);
gst_pad_set_link_function (lame->sinkpad, gst_lame_sinkconnect);
lame->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (gst_lame_src_factory), "src");
gst_element_add_pad (GST_ELEMENT (lame), lame->srcpad);
GST_FLAG_SET (lame, GST_ELEMENT_EVENT_AWARE);
GST_DEBUG ("setting up lame encoder");
lame->lgf = lame_init ();
lame->samplerate = 44100;
lame->num_channels = 2;
lame->initialized = FALSE;
lame->bitrate = lame_get_brate (lame->lgf);
lame->compression_ratio = lame_get_compression_ratio (lame->lgf);
lame->quality = lame_get_quality (lame->lgf);
lame->mode = lame_get_mode (lame->lgf);
lame->force_ms = lame_get_force_ms (lame->lgf);
lame->free_format = lame_get_free_format (lame->lgf);
lame->copyright = lame_get_copyright (lame->lgf);
lame->original = lame_get_original (lame->lgf);
lame->error_protection = lame_get_error_protection (lame->lgf);
lame->padding_type = lame_get_padding_type (lame->lgf);
lame->extension = lame_get_extension (lame->lgf);
lame->strict_iso = lame_get_strict_ISO (lame->lgf);
lame->disable_reservoir = lame_get_disable_reservoir (lame->lgf);
lame->vbr = lame_get_VBR_q (lame->lgf);
lame->vbr_mean_bitrate = lame_get_VBR_mean_bitrate_kbps (lame->lgf);
lame->vbr_min_bitrate = lame_get_VBR_min_bitrate_kbps (lame->lgf);
lame->vbr_max_bitrate = lame_get_VBR_max_bitrate_kbps (lame->lgf);
lame->vbr_hard_min = lame_get_VBR_hard_min (lame->lgf);
lame->lowpass_freq = lame_get_lowpassfreq (lame->lgf);
lame->lowpass_width = lame_get_lowpasswidth (lame->lgf);
lame->highpass_freq = lame_get_highpassfreq (lame->lgf);
lame->highpass_width = lame_get_highpasswidth (lame->lgf);
lame->ath_only = lame_get_ATHonly (lame->lgf);
lame->ath_short = lame_get_ATHshort (lame->lgf);
lame->no_ath = lame_get_noATH (lame->lgf);
/* lame->ath_type = lame_get_ATHtype (lame->lgf); */
lame->ath_lower = lame_get_ATHlower (lame->lgf);
lame->cwlimit = lame_get_cwlimit (lame->lgf);
lame->allow_diff_short = lame_get_allow_diff_short (lame->lgf);
lame->no_short_blocks = lame_get_no_short_blocks (lame->lgf);
lame->emphasis = lame_get_emphasis (lame->lgf);
lame->metadata = GST_CAPS_NEW (
"lame_metadata",
"application/x-gst-metadata",
"comment", GST_PROPS_STRING ("Track encoded with GStreamer"),
"year", GST_PROPS_STRING (""),
"tracknumber", GST_PROPS_STRING (""),
"title", GST_PROPS_STRING (""),
"artist", GST_PROPS_STRING (""),
"album", GST_PROPS_STRING (""),
"genre", GST_PROPS_STRING ("")
);
id3tag_init (lame->lgf);
GST_DEBUG_OBJECT (lame, "done initializing");
}
static void
gst_lame_add_metadata (GstLame *lame, GstCaps *caps)
{
GList *props;
GstPropsEntry *prop;
if (caps == NULL)
return;
props = gst_caps_get_props (caps)->properties;
while (props) {
prop = (GstPropsEntry*)(props->data);
props = g_list_next(props);
if (gst_props_entry_get_props_type (prop) == GST_PROPS_STRING_TYPE) {
const gchar *name = gst_props_entry_get_name (prop);
const gchar *value;
gst_props_entry_get_string (prop, &value);
if (!value || strlen (value) == 0)
continue;
if (strcmp (name, "comment") == 0) {
id3tag_set_comment (lame->lgf, value);
} else if (strcmp (name, "date") == 0) {
id3tag_set_year (lame->lgf, value);
} else if (strcmp (name, "tracknumber") == 0) {
id3tag_set_track (lame->lgf, value);
} else if (strcmp (name, "title") == 0) {
id3tag_set_title (lame->lgf, value);
} else if (strcmp (name, "artist") == 0) {
id3tag_set_artist (lame->lgf, value);
} else if (strcmp (name, "album") == 0) {
id3tag_set_album (lame->lgf, value);
} else if (strcmp (name, "genre") == 0) {
id3tag_set_genre (lame->lgf, value);
}
}
}
}
static void
gst_lame_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstLame *lame;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_LAME (object));
lame = GST_LAME (object);
switch (prop_id) {
case ARG_BITRATE:
lame->bitrate = g_value_get_int (value);
break;
case ARG_COMPRESSION_RATIO:
lame->compression_ratio = g_value_get_float (value);
break;
case ARG_QUALITY:
lame->quality = g_value_get_enum (value);
break;
case ARG_MODE:
lame->mode = g_value_get_enum (value);
break;
case ARG_FORCE_MS:
lame->force_ms = g_value_get_boolean (value);
break;
case ARG_FREE_FORMAT:
lame->free_format = g_value_get_boolean (value);
break;
case ARG_COPYRIGHT:
lame->copyright = g_value_get_boolean (value);
break;
case ARG_ORIGINAL:
lame->original = g_value_get_boolean (value);
break;
case ARG_ERROR_PROTECTION:
lame->error_protection = g_value_get_boolean (value);
break;
case ARG_PADDING_TYPE:
lame->padding_type = g_value_get_int (value);
break;
case ARG_EXTENSION:
lame->extension = g_value_get_boolean (value);
break;
case ARG_STRICT_ISO:
lame->strict_iso = g_value_get_boolean (value);
break;
case ARG_DISABLE_RESERVOIR:
lame->disable_reservoir = g_value_get_boolean (value);
break;
case ARG_VBR:
lame->vbr = g_value_get_boolean (value);
break;
case ARG_VBR_MEAN_BITRATE:
lame->vbr_mean_bitrate = g_value_get_int (value);
break;
case ARG_VBR_MIN_BITRATE:
lame->vbr_min_bitrate = g_value_get_int (value);
break;
case ARG_VBR_MAX_BITRATE:
lame->vbr_max_bitrate = g_value_get_int (value);
break;
case ARG_VBR_HARD_MIN:
lame->vbr_hard_min = g_value_get_int (value);
break;
case ARG_LOWPASS_FREQ:
lame->lowpass_freq = g_value_get_int (value);
break;
case ARG_LOWPASS_WIDTH:
lame->lowpass_width = g_value_get_int (value);
break;
case ARG_HIGHPASS_FREQ:
lame->highpass_freq = g_value_get_int (value);
break;
case ARG_HIGHPASS_WIDTH:
lame->highpass_width = g_value_get_int (value);
break;
case ARG_ATH_ONLY:
lame->ath_only = g_value_get_boolean (value);
break;
case ARG_ATH_SHORT:
lame->ath_short = g_value_get_boolean (value);
break;
case ARG_NO_ATH:
lame->no_ath = g_value_get_boolean (value);
break;
case ARG_ATH_LOWER:
lame->ath_lower = g_value_get_int (value);
break;
case ARG_CWLIMIT:
lame->cwlimit = g_value_get_int (value);
break;
case ARG_ALLOW_DIFF_SHORT:
lame->allow_diff_short = g_value_get_boolean (value);
break;
case ARG_NO_SHORT_BLOCKS:
lame->no_short_blocks = g_value_get_boolean (value);
break;
case ARG_EMPHASIS:
lame->emphasis = g_value_get_boolean (value);
break;
case ARG_METADATA:
lame->metadata = g_value_get_boxed (value);
break;
default:
break;
}
}
static void
gst_lame_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstLame *lame;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_LAME (object));
lame = GST_LAME (object);
switch (prop_id) {
case ARG_BITRATE:
g_value_set_int (value, lame->bitrate);
break;
case ARG_COMPRESSION_RATIO:
g_value_set_float (value, lame->compression_ratio);
break;
case ARG_QUALITY:
g_value_set_enum (value, lame->quality);
break;
case ARG_MODE:
g_value_set_enum (value, lame->mode);
break;
case ARG_FORCE_MS:
g_value_set_boolean (value, lame->force_ms);
break;
case ARG_FREE_FORMAT:
g_value_set_boolean (value, lame->free_format);
break;
case ARG_COPYRIGHT:
g_value_set_boolean (value, lame->copyright);
break;
case ARG_ORIGINAL:
g_value_set_boolean (value, lame->original);
break;
case ARG_ERROR_PROTECTION:
g_value_set_boolean (value, lame->error_protection);
break;
case ARG_PADDING_TYPE:
g_value_set_enum (value, lame->padding_type);
break;
case ARG_EXTENSION:
g_value_set_boolean (value, lame->extension);
break;
case ARG_STRICT_ISO:
g_value_set_boolean (value, lame->strict_iso);
break;
case ARG_DISABLE_RESERVOIR:
g_value_set_boolean (value, lame->disable_reservoir);
break;
case ARG_VBR:
g_value_set_boolean (value, lame->vbr);
break;
case ARG_VBR_MEAN_BITRATE:
g_value_set_int (value, lame->vbr_mean_bitrate);
break;
case ARG_VBR_MIN_BITRATE:
g_value_set_int (value, lame->vbr_min_bitrate);
break;
case ARG_VBR_MAX_BITRATE:
g_value_set_int (value, lame->vbr_max_bitrate);
break;
case ARG_VBR_HARD_MIN:
g_value_set_int (value, lame->vbr_hard_min);
break;
case ARG_LOWPASS_FREQ:
g_value_set_int (value, lame->lowpass_freq);
break;
case ARG_LOWPASS_WIDTH:
g_value_set_int (value, lame->lowpass_width);
break;
case ARG_HIGHPASS_FREQ:
g_value_set_int (value, lame->highpass_freq);
break;
case ARG_HIGHPASS_WIDTH:
g_value_set_int (value, lame->highpass_width);
break;
case ARG_ATH_ONLY:
g_value_set_boolean (value, lame->ath_only);
break;
case ARG_ATH_SHORT:
g_value_set_boolean (value, lame->ath_short);
break;
case ARG_NO_ATH:
g_value_set_boolean (value, lame->no_ath);
break;
case ARG_ATH_LOWER:
g_value_set_int (value, lame->ath_lower);
break;
case ARG_CWLIMIT:
g_value_set_int (value, lame->cwlimit);
break;
case ARG_ALLOW_DIFF_SHORT:
g_value_set_boolean (value, lame->allow_diff_short);
break;
case ARG_NO_SHORT_BLOCKS:
g_value_set_boolean (value, lame->no_short_blocks);
break;
case ARG_EMPHASIS:
g_value_set_boolean (value, lame->emphasis);
break;
case ARG_METADATA:
g_value_set_static_boxed (value, lame->metadata);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_lame_chain (GstPad *pad, GstBuffer *buf)
{
GstLame *lame;
GstBuffer *outbuf;
gchar *mp3_data = NULL;
gint mp3_buffer_size, mp3_size = 0;
gboolean eos = FALSE;
lame = GST_LAME (gst_pad_get_parent (pad));
GST_DEBUG ("entered chain");
if (GST_IS_EVENT (buf)) {
switch (GST_EVENT_TYPE (buf)) {
case GST_EVENT_EOS:
eos = TRUE;
case GST_EVENT_FLUSH:
mp3_buffer_size = 7200;
mp3_data = g_malloc (mp3_buffer_size);
mp3_size = lame_encode_flush (lame->lgf, mp3_data, mp3_buffer_size);
gst_event_unref (GST_EVENT (buf));
break;
default:
gst_pad_event_default (pad, GST_EVENT (buf));
break;
}
}
else {
gint64 duration;
if (!lame->initialized) {
gst_buffer_unref (buf);
gst_element_error (GST_ELEMENT (lame), "encoder not initialized (input is not audio?)");
return;
}
/* allocate space for output */
mp3_buffer_size = ((GST_BUFFER_SIZE(buf) / (2+lame->num_channels)) * 1.25) + 7200;
mp3_data = g_malloc (mp3_buffer_size);
if (lame->num_channels == 2) {
mp3_size = lame_encode_buffer_interleaved (lame->lgf,
(short int *) (GST_BUFFER_DATA (buf)),
GST_BUFFER_SIZE (buf) / 4,
mp3_data, mp3_buffer_size);
}
else {
mp3_size = lame_encode_buffer (lame->lgf,
(short int *) (GST_BUFFER_DATA (buf)),
(short int *) (GST_BUFFER_DATA (buf)),
GST_BUFFER_SIZE (buf) / 2,
mp3_data, mp3_buffer_size);
}
GST_DEBUG (
"encoded %d bytes of audio to %d bytes of mp3",
GST_BUFFER_SIZE (buf), mp3_size);
duration = (GST_SECOND * GST_BUFFER_SIZE (buf) /
(2 * lame->samplerate * lame->num_channels));
if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE &&
GST_BUFFER_DURATION (buf) != duration)
GST_DEBUG (
"mad: incoming buffer had incorrect duration %lld, "
"outgoing buffer will have correct duration %lld",
GST_BUFFER_DURATION (buf), duration);
if (lame->last_ts == GST_CLOCK_TIME_NONE) {
lame->last_ts = GST_BUFFER_TIMESTAMP (buf);
lame->last_offs = GST_BUFFER_OFFSET (buf);
lame->last_duration = duration;
} else {
lame->last_duration += duration;
}
gst_buffer_unref (buf);
}
if (mp3_size > 0) {
outbuf = gst_buffer_new ();
GST_BUFFER_DATA (outbuf) = mp3_data;
GST_BUFFER_SIZE (outbuf) = mp3_size;
GST_BUFFER_TIMESTAMP (outbuf) = lame->last_ts;
GST_BUFFER_OFFSET (outbuf) = lame->last_offs;
GST_BUFFER_DURATION (outbuf) = lame->last_duration;
gst_pad_push (lame->srcpad,outbuf);
lame->last_ts = GST_CLOCK_TIME_NONE;
}
else {
g_free (mp3_data);
}
if (eos) {
gst_pad_push (lame->srcpad, GST_BUFFER (gst_event_new (GST_EVENT_EOS)));
gst_element_set_eos (GST_ELEMENT (lame));
}
}
/* transition to the READY state by configuring the gst_lame encoder */
static gboolean
gst_lame_setup (GstLame *lame)
{
GST_DEBUG_OBJECT (lame, "starting setup");
/* check if we're already initialized; if we are, we might want to check
* if this initialization is compatible with the previous one */
/* FIXME: do this */
if (lame->initialized)
g_warning ("already initialized");
/* copy the parameters over */
lame_set_in_samplerate (lame->lgf, lame->samplerate);
/* force mono encoding if we only have one channel */
if (lame->num_channels == 1)
lame->mode = 3;
lame_set_brate (lame->lgf, lame->bitrate);
lame_set_compression_ratio (lame->lgf, lame->compression_ratio);
lame_set_quality (lame->lgf, lame->quality);
lame_set_mode (lame->lgf, lame->mode);
lame_set_force_ms (lame->lgf, lame->force_ms);
lame_set_free_format (lame->lgf, lame->free_format);
lame_set_copyright (lame->lgf, lame->copyright);
lame_set_original (lame->lgf, lame->original);
lame_set_error_protection (lame->lgf, lame->error_protection);
lame_set_padding_type (lame->lgf, lame->padding_type);
lame_set_extension (lame->lgf, lame->extension);
lame_set_strict_ISO (lame->lgf, lame->strict_iso);
lame_set_disable_reservoir (lame->lgf, lame->disable_reservoir);
lame_set_VBR_q (lame->lgf, lame->vbr);
lame_set_VBR_mean_bitrate_kbps (lame->lgf, lame->vbr_mean_bitrate);
lame_set_VBR_min_bitrate_kbps (lame->lgf, lame->vbr_min_bitrate);
lame_set_VBR_max_bitrate_kbps (lame->lgf, lame->vbr_max_bitrate);
lame_set_VBR_hard_min (lame->lgf, lame->vbr_hard_min);
lame_set_lowpassfreq (lame->lgf, lame->lowpass_freq);
lame_set_lowpasswidth (lame->lgf, lame->lowpass_width);
lame_set_highpassfreq (lame->lgf, lame->highpass_freq);
lame_set_highpasswidth (lame->lgf, lame->highpass_width);
lame_set_ATHonly (lame->lgf, lame->ath_only);
lame_set_ATHshort (lame->lgf, lame->ath_short);
lame_set_noATH (lame->lgf, lame->no_ath);
lame_set_ATHlower (lame->lgf, lame->ath_lower);
lame_set_cwlimit (lame->lgf, lame->cwlimit);
lame_set_allow_diff_short (lame->lgf, lame->allow_diff_short);
lame_set_no_short_blocks (lame->lgf, lame->no_short_blocks);
lame_set_emphasis (lame->lgf, lame->emphasis);
gst_lame_add_metadata (lame, lame->metadata);
/* initialize the lame encoder */
if (lame_init_params (lame->lgf) < 0) {
lame->initialized = FALSE;
}
else {
lame->initialized = TRUE;
/* FIXME: it would be nice to print out the mode here */
GST_INFO (
"lame encoder initialized (%d kbit/s, %d Hz, %d channels)",
lame->bitrate, lame->samplerate, lame->num_channels);
}
GST_DEBUG_OBJECT (lame, "done with setup");
return lame->initialized;
}
static GstElementStateReturn
gst_lame_change_state (GstElement *element)
{
GstLame *lame;
g_return_val_if_fail (GST_IS_LAME (element), GST_STATE_FAILURE);
lame = GST_LAME (element);
GST_DEBUG ("state pending %d", GST_STATE_PENDING (element));
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_READY_TO_PAUSED:
lame->last_ts = GST_CLOCK_TIME_NONE;
break;
case GST_STATE_READY_TO_NULL:
if (lame->initialized) {
lame_close (lame->lgf);
lame->initialized = FALSE;
}
break;
default:
break;
}
/* if we haven't failed already, give the parent class a chance to ;-) */
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the gst_lame element */
factory = gst_element_factory_new ("lame", GST_TYPE_LAME,
&gst_lame_details);
g_return_val_if_fail (factory != NULL, FALSE);
/* register the source's padtemplate */
gst_element_factory_add_pad_template (factory,
GST_PAD_TEMPLATE_GET (gst_lame_src_factory));
/* register the sink's padtemplate */
gst_element_factory_add_pad_template (factory,
GST_PAD_TEMPLATE_GET (gst_lame_sink_factory));
/* and add the gst_lame element factory to the plugin */
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"lame",
plugin_init
};
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