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gstreamer/ext/lame/gstlame.c
Sebastian Dröge d2d56eb183 Put the MPEG audio version into the caps as "mpegaudioversion". 
Original commit message from CVS:
* ext/lame/gstlame.c: (gst_lame_sink_setcaps):
* gst/mpegaudioparse/gstmpegaudioparse.c:
(mp3_type_frame_length_from_header), (mp3_caps_create),
(gst_mp3parse_chain):
Put the MPEG audio version into the caps as "mpegaudioversion".
This is different from "mpegversion".
2008-07-27 11:01:12 +00:00

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/* 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>
*
* 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-lame
* @see_also: mad, vorbisenc
*
* This element encodes raw integer audio into an MPEG-1 layer 3 (MP3) stream.
* Note that <ulink url="http://en.wikipedia.org/wiki/MP3">MP3</ulink> is not
* a free format, there are licensing and patent issues to take into
* consideration. See <ulink url="http://www.vorbis.com/">Ogg/Vorbis</ulink>
* for a royalty free (and often higher quality) alternative.
*
* <refsect2>
* <title>Output sample rate</title>
* If no fixed output sample rate is negotiated on the element's src pad,
* the element will choose an optimal sample rate to resample to internally.
* For example, a 16-bit 44.1 KHz mono audio stream encoded at 48 kbit will
* get resampled to 32 KHz. Use filter caps on the src pad to force a
* particular sample rate.
* </refsect2>
* <refsect2>
* <title>Writing metadata (tags)</title>
* Whilst the lame encoder element does claim to implement the GstTagSetter
* interface, it does so only for backwards compatibility reasons. Tag writing
* has been removed from lame. Use external elements like id3v2mux or apev2mux
* to add tags to your MP3 streams. The same goes for XING headers: use the
* xingmux element to add XING headers to your VBR mp3 file.
* </refsect2>
* <refsect2>
* <title>Example pipelines</title>
* |[
* gst-launch -v audiotestsrc wave=sine num-buffers=100 ! audioconvert ! lame ! filesink location=sine.mp3
* ]| Encode a test sine signal to MP3.
* |[
* gst-launch -v alsasrc ! audioconvert ! lame bitrate=192 ! filesink location=alsasrc.mp3
* ]| Record from a sound card using ALSA and encode to MP3
* |[
* gst-launch -v filesrc location=music.wav ! decodebin ! audioconvert ! audioresample ! lame bitrate=192 ! id3v2mux ! filesink location=music.mp3
* ]| Transcode from a .wav file to MP3 (the id3v2mux element is optional)
* |[
* gst-launch -v cdda://5 ! audioconvert ! lame bitrate=192 ! filesink location=track5.mp3
* ]| Encode Audio CD track 5 to MP3
* |[
* gst-launch -v audiotestsrc num-buffers=10 ! audio/x-raw-int,rate=44100,channels=1 ! lame bitrate=48 mode=3 ! filesink location=test.mp3
* ]| Encode to a fixed sample rate
* </refsect2>
*
* Last reviewed on 2007-07-24 (0.10.7)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "string.h"
#include "gstlame.h"
#include "gst/gst-i18n-plugin.h"
#ifdef lame_set_preset
#define GST_LAME_PRESET
#endif
GST_DEBUG_CATEGORY_STATIC (debug);
#define GST_CAT_DEFAULT debug
#define DEFAULT_MIN_VBR_BITRATE 112
#define DEFAULT_MAX_VBR_BITRATE 160
#define DEFAULT_MEAN_VBR_BITRATE 128
/* elementfactory information */
static GstElementDetails gst_lame_details = {
"L.A.M.E. mp3 encoder",
"Codec/Encoder/Audio",
"High-quality free MP3 encoder",
"Erik Walthinsen <omega@cse.ogi.edu>, " "Wim Taymans <wim@fluendo.com>",
};
/* LAME can do MPEG-1, MPEG-2, and MPEG-2.5, so it has 9 possible
* sample rates it supports */
static GstStaticPadTemplate gst_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) { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, "
"channels = (int) [ 1, 2 ]")
);
static GstStaticPadTemplate gst_lame_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/mpeg, "
"mpegversion = (int) 1, "
"layer = (int) 3, "
"rate = (int) { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, "
"channels = (int) [ 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, "Stereo", "stereo"},
{1, "Joint Stereo", "joint"},
{2, "Dual Channel", "dual"},
{3, "Mono", "mono"},
{4, "Auto", "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 - Best", "0"},
{1, "1", "1"},
{2, "2", "2"},
{3, "3", "3"},
{4, "4", "4"},
{5, "5 - Default", "5"},
{6, "6", "6"},
{7, "7", "7"},
{8, "8", "8"},
{9, "9 - Worst", "9"},
{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, "No Padding", "never"},
{1, "Always Pad", "always"},
{2, "Adjust Padding", "adjust"},
{0, NULL, NULL}
};
if (!lame_padding_type) {
lame_padding_type = g_enum_register_static ("GstLamePadding", lame_padding);
}
return lame_padding_type;
}
#define GST_TYPE_LAME_VBRMODE (gst_lame_vbrmode_get_type())
static GType
gst_lame_vbrmode_get_type (void)
{
static GType lame_vbrmode_type = 0;
static GEnumValue lame_vbrmode[] = {
{vbr_off, "No VBR (Constant Bitrate)", "none"},
{vbr_rh, "Lame's old VBR algorithm", "old"},
{vbr_abr, "VBR Average Bitrate", "abr"},
{vbr_mtrh, "Lame's new VBR algorithm", "new"},
{0, NULL, NULL}
};
if (!lame_vbrmode_type) {
lame_vbrmode_type = g_enum_register_static ("GstLameVbrmode", lame_vbrmode);
}
return lame_vbrmode_type;
}
#ifdef GSTLAME_PRESET
#define GST_TYPE_LAME_PRESET (gst_lame_preset_get_type())
static GType
gst_lame_preset_get_type (void)
{
static GType gst_lame_preset = 0;
static GEnumValue gst_lame_presets[] = {
{0, "None", "none"},
{MEDIUM, "Medium", "medium"},
{STANDARD, "Standard", "standard"},
{EXTREME, "Extreme", "extreme"},
{INSANE, "Insane", "insane"},
{0, NULL, NULL}
};
if (!gst_lame_preset) {
gst_lame_preset =
g_enum_register_static ("GstLamePreset", gst_lame_presets);
}
return gst_lame_preset;
}
#endif
/********** Standard stuff for signals and arguments **********/
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, /* FIXME: remove in 0.11 */
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, /* FIXME: remove in 0.11 */
ARG_ALLOW_DIFF_SHORT,
ARG_NO_SHORT_BLOCKS,
ARG_EMPHASIS,
ARG_VBR_QUALITY,
#ifdef GSTLAME_PRESET
ARG_XINGHEADER, /* FIXME: remove in 0.11 */
ARG_PRESET
#else
ARG_XINGHEADER /* FIXME: remove in 0.11 */
#endif
};
static void gst_lame_base_init (gpointer g_class);
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 gboolean gst_lame_sink_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_lame_chain (GstPad * pad, GstBuffer * buf);
static gboolean gst_lame_setup (GstLame * lame);
static GstStateChangeReturn gst_lame_change_state (GstElement * element,
GstStateChange transition);
static GstElementClass *parent_class = NULL;
GType
gst_lame_get_type (void)
{
static GType gst_lame_type = 0;
if (!gst_lame_type) {
static const GTypeInfo gst_lame_info = {
sizeof (GstLameClass),
gst_lame_base_init,
NULL,
(GClassInitFunc) gst_lame_class_init,
NULL,
NULL,
sizeof (GstLame),
0,
(GInstanceInitFunc) gst_lame_init,
};
/* FIXME: remove support for the GstTagSetter interface in 0.11 */
static const GInterfaceInfo tag_setter_info = {
NULL,
NULL,
NULL
};
gst_lame_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstLame", &gst_lame_info, 0);
g_type_add_interface_static (gst_lame_type, GST_TYPE_TAG_SETTER,
&tag_setter_info);
}
return gst_lame_type;
}
static void
gst_lame_release_memory (GstLame * lame)
{
if (lame->lgf) {
lame_close (lame->lgf);
lame->lgf = NULL;
}
}
static void
gst_lame_finalize (GObject * obj)
{
gst_lame_release_memory (GST_LAME (obj));
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_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_lame_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_lame_sink_template));
gst_element_class_set_details (element_class, &gst_lame_details);
}
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_peek_parent (klass);
gobject_class->set_property = gst_lame_set_property;
gobject_class->get_property = gst_lame_get_property;
gobject_class->finalize = gst_lame_finalize;
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, 160, 192, 224, 256 or 320)",
8, 320, 128, G_PARAM_READWRITE));
/* compression ratio set to 0.0 by default otherwise it overrides the bitrate setting */
g_object_class_install_property (G_OBJECT_CLASS (klass),
ARG_COMPRESSION_RATIO, g_param_spec_float ("compression_ratio",
"Compression Ratio",
"let lame choose bitrate to achieve selected compression ratio", 0.0,
200.0, 0.0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUALITY,
g_param_spec_enum ("quality", "Quality",
"Quality of algorithm used for encoding", 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 "
"(DEPRECATED: this setting has no effect)",
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_enum ("vbr", "VBR", "Specify bitrate mode",
GST_TYPE_LAME_VBRMODE, vbr_off, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_QUALITY,
g_param_spec_enum ("vbr-quality", "VBR Quality", "VBR Quality",
GST_TYPE_LAME_QUALITY, 5, 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 VBR bitrate", 8, 320,
DEFAULT_MEAN_VBR_BITRATE, 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 minimum VBR bitrate (8, 16, 24, 32, 40, 48, 56, 64, 80, 96, "
"112, 128, 160, 192, 224, 256 or 320)",
8, 320, DEFAULT_MIN_VBR_BITRATE, 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 maximum VBR bitrate (8, 16, 24, 32, 40, 48, 56, 64, 80, 96, "
"112, 128, 160, 192, 224, 256 or 320)",
8, 320, DEFAULT_MAX_VBR_BITRATE, 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 whether min VBR bitrate is a hard limit. Normally, "
"it can be violated for silence", 0, 1, 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 "
"(DEPRECATED: this setting has no effect)", 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_XINGHEADER,
g_param_spec_boolean ("xingheader", "Output Xing Header",
"Output Xing Header (BROKEN, use xingmux instead)",
FALSE, G_PARAM_READWRITE));
#ifdef GSTLAME_PRESET
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PRESET,
g_param_spec_enum ("preset", "Lame Preset", "Lame Preset",
GST_TYPE_LAME_PRESET, 0, G_PARAM_READWRITE));
#endif
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_lame_change_state);
}
static gboolean
gst_lame_src_setcaps (GstPad * pad, GstCaps * caps)
{
GST_DEBUG_OBJECT (pad, "caps: %" GST_PTR_FORMAT, caps);
return TRUE;
}
static gboolean
gst_lame_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstLame *lame;
gint out_samplerate;
gint version;
GstStructure *structure;
GstCaps *othercaps;
lame = GST_LAME (GST_PAD_PARENT (pad));
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "rate", &lame->samplerate))
goto no_rate;
if (!gst_structure_get_int (structure, "channels", &lame->num_channels))
goto no_channels;
GST_DEBUG_OBJECT (lame, "setting up lame");
if (!gst_lame_setup (lame))
goto setup_failed;
out_samplerate = lame_get_out_samplerate (lame->lgf);
if (out_samplerate == 0)
goto zero_output_rate;
if (out_samplerate != lame->samplerate) {
GST_WARNING_OBJECT (lame,
"output samplerate %d is different from incoming samplerate %d",
out_samplerate, lame->samplerate);
}
version = lame_get_version (lame->lgf);
if (version == 0)
version = 2;
else if (version == 1)
version = 1;
else if (version == 2)
version = 3;
othercaps =
gst_caps_new_simple ("audio/mpeg",
"mpegversion", G_TYPE_INT, 1,
"mpegaudioversion", G_TYPE_INT, version,
"layer", G_TYPE_INT, 3,
"channels", G_TYPE_INT, lame->mode == MONO ? 1 : lame->num_channels,
"rate", G_TYPE_INT, out_samplerate, NULL);
/* and use these caps */
gst_pad_set_caps (lame->srcpad, othercaps);
gst_caps_unref (othercaps);
return TRUE;
no_rate:
{
GST_ERROR_OBJECT (lame, "input caps have no sample rate field");
return FALSE;
}
no_channels:
{
GST_ERROR_OBJECT (lame, "input caps have no channels field");
return FALSE;
}
zero_output_rate:
{
GST_ELEMENT_ERROR (lame, LIBRARY, SETTINGS, (NULL),
("LAME decided on a zero sample rate"));
return FALSE;
}
setup_failed:
{
GST_ELEMENT_ERROR (lame, LIBRARY, SETTINGS,
(_("Failed to configure LAME encoder. Check your encoding parameters.")), (NULL));
return FALSE;
}
}
static void
gst_lame_init (GstLame * lame)
{
GST_DEBUG_OBJECT (lame, "starting initialization");
lame->sinkpad =
gst_pad_new_from_static_template (&gst_lame_sink_template, "sink");
gst_pad_set_event_function (lame->sinkpad,
GST_DEBUG_FUNCPTR (gst_lame_sink_event));
gst_pad_set_chain_function (lame->sinkpad,
GST_DEBUG_FUNCPTR (gst_lame_chain));
gst_pad_set_setcaps_function (lame->sinkpad,
GST_DEBUG_FUNCPTR (gst_lame_sink_setcaps));
gst_element_add_pad (GST_ELEMENT (lame), lame->sinkpad);
lame->srcpad =
gst_pad_new_from_static_template (&gst_lame_src_template, "src");
gst_pad_set_setcaps_function (lame->srcpad,
GST_DEBUG_FUNCPTR (gst_lame_src_setcaps));
gst_element_add_pad (GST_ELEMENT (lame), lame->srcpad);
/* create an encoder state so we can ask about defaults */
lame->lgf = lame_init ();
if (lame->lgf == NULL)
goto init_error;
if (lame_init_params (lame->lgf) < 0)
goto init_error;
lame->samplerate = 44100;
lame->num_channels = 2;
lame->setup = FALSE;
lame->bitrate = 128; /* lame_get_brate (lame->lgf);
* => 0/out of range */
lame->compression_ratio = 0.0; /* lame_get_compression_ratio (lame->lgf);
* => 0/out of range ...
* NOTE: 0.0 makes bitrate take precedence */
lame->quality = 5; /* lame_get_quality (lame->lgf);
* => -1/out of range */
lame->mode = lame_get_mode (lame->lgf);
lame->requested_mode = lame->mode;
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->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 = vbr_off; /* lame_get_VBR (lame->lgf); */
lame->vbr_quality = 5;
#if 0
/* Replaced by our own more informative constants,
rather than LAME's defaults */
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 = 0; /* lame_get_VBR_max_bitrate_kbps (lame->lgf);
* => 0/no vbr possible */
#else
lame->vbr_mean_bitrate = DEFAULT_MEAN_VBR_BITRATE;
lame->vbr_min_bitrate = DEFAULT_MIN_VBR_BITRATE;
lame->vbr_max_bitrate = DEFAULT_MAX_VBR_BITRATE;
#endif
lame->vbr_hard_min = lame_get_VBR_hard_min (lame->lgf);
/* lame->lowpass_freq = 50000; lame_get_lowpassfreq (lame->lgf);
* => 0/lowpass on everything ? */
lame->lowpass_freq = 0;
lame->lowpass_width = 0; /* lame_get_lowpasswidth (lame->lgf);
* => -1/out of range */
lame->highpass_freq = lame_get_highpassfreq (lame->lgf);
lame->highpass_width = 0; /* lame_get_highpasswidth (lame->lgf);
* => -1/out of range */
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->allow_diff_short = lame_get_allow_diff_short (lame->lgf);
lame->no_short_blocks = TRUE; /* lame_get_no_short_blocks (lame->lgf); */
lame->emphasis = lame_get_emphasis (lame->lgf);
lame->preset = 0;
lame_close (lame->lgf);
lame->lgf = NULL;
GST_DEBUG_OBJECT (lame, "done initializing");
lame->init_error = FALSE;
return;
/* ERRORS */
init_error:
{
GST_ERROR_OBJECT (lame, "error initializing");
lame->init_error = TRUE;
if (lame->lgf) {
lame_close (lame->lgf);
lame->lgf = NULL;
}
}
}
/* <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,free_format) \
G_STMT_START { \
gint ___rate = rate; \
gint maxrate = 320; \
gint multiplier = 64; \
if (!free_format) { \
if (rate <= 64) { \
maxrate = 64; multiplier = 8; \
if ((rate % 8) != 0) ___rate = GST_ROUND_UP_8 (rate); \
} else if (rate <= 128) { \
maxrate = 128; 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 <= 320) { \
maxrate = 320; 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_lame_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstLame *lame;
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->requested_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:
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_enum (value);
break;
case ARG_VBR_QUALITY:
lame->vbr_quality = g_value_get_enum (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:
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_XINGHEADER:
break;
#ifdef GSTLAME_PRESET
case ARG_PRESET:
lame->preset = g_value_get_enum (value);
break;
#endif
default:
break;
}
}
static void
gst_lame_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstLame *lame;
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->requested_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:
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_enum (value, lame->vbr);
break;
case ARG_VBR_QUALITY:
g_value_set_enum (value, lame->vbr_quality);
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:
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_XINGHEADER:
break;
#ifdef GSTLAME_PRESET
case ARG_PRESET:
g_value_set_enum (value, lame->preset);
break;
#endif
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_lame_sink_event (GstPad * pad, GstEvent * event)
{
gboolean ret;
GstLame *lame;
lame = GST_LAME (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:{
GST_DEBUG_OBJECT (lame, "handling EOS event");
if (lame->lgf != NULL) {
GstBuffer *buf;
gint size;
buf = gst_buffer_new_and_alloc (7200);
size = lame_encode_flush (lame->lgf, GST_BUFFER_DATA (buf), 7200);
if (size > 0 && lame->last_flow == GST_FLOW_OK) {
gint64 duration;
duration = gst_util_uint64_scale (size, 8 * GST_SECOND,
1000 * lame->bitrate);
if (lame->last_ts == GST_CLOCK_TIME_NONE) {
lame->last_ts = lame->eos_ts;
lame->last_duration = duration;
} else {
lame->last_duration += duration;
}
GST_BUFFER_TIMESTAMP (buf) = lame->last_ts;
GST_BUFFER_DURATION (buf) = lame->last_duration;
lame->last_ts = GST_CLOCK_TIME_NONE;
GST_BUFFER_SIZE (buf) = size;
GST_DEBUG_OBJECT (lame, "pushing final packet of %u bytes", size);
gst_buffer_set_caps (buf, GST_PAD_CAPS (lame->srcpad));
gst_pad_push (lame->srcpad, buf);
} else {
GST_DEBUG_OBJECT (lame, "no final packet (size=%d, last_flow=%s)",
size, gst_flow_get_name (lame->last_flow));
gst_buffer_unref (buf);
}
}
ret = gst_pad_event_default (pad, event);
break;
}
case GST_EVENT_FLUSH_START:
GST_DEBUG_OBJECT (lame, "handling FLUSH start event");
/* forward event */
ret = gst_pad_push_event (lame->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
{
guchar *mp3_data = NULL;
gint mp3_buffer_size, mp3_size = 0;
GST_DEBUG_OBJECT (lame, "handling FLUSH stop event");
/* clear buffers */
mp3_buffer_size = 7200;
mp3_data = g_malloc (mp3_buffer_size);
mp3_size = lame_encode_flush (lame->lgf, mp3_data, mp3_buffer_size);
ret = gst_pad_push_event (lame->srcpad, event);
break;
}
case GST_EVENT_TAG:
GST_DEBUG_OBJECT (lame, "ignoring TAG event, passing it on");
ret = gst_pad_push_event (lame->srcpad, event);
break;
default:
ret = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (lame);
return ret;
}
static GstFlowReturn
gst_lame_chain (GstPad * pad, GstBuffer * buf)
{
GstLame *lame;
guchar *mp3_data;
gint mp3_buffer_size, mp3_size;
gint64 duration;
GstFlowReturn result;
gint num_samples;
guint8 *data;
guint size;
lame = GST_LAME (GST_PAD_PARENT (pad));
GST_LOG_OBJECT (lame, "entered chain");
if (lame->init_error)
goto init_error;
if (!lame->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 + 7200;
mp3_data = g_malloc (mp3_buffer_size);
/* lame seems to be too stupid to get mono interleaved going */
if (lame->num_channels == 1) {
mp3_size = lame_encode_buffer (lame->lgf,
(short int *) data,
(short int *) data, num_samples, mp3_data, mp3_buffer_size);
} else {
mp3_size = lame_encode_buffer_interleaved (lame->lgf,
(short int *) data,
num_samples / lame->num_channels, mp3_data, mp3_buffer_size);
}
GST_LOG_OBJECT (lame, "encoded %d bytes of audio to %d bytes of mp3",
size, mp3_size);
duration = gst_util_uint64_scale_int (size, GST_SECOND,
2 * lame->samplerate * lame->num_channels);
if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE &&
GST_BUFFER_DURATION (buf) != duration) {
GST_DEBUG_OBJECT (lame, "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 (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) {
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) = lame->last_ts;
GST_BUFFER_OFFSET (outbuf) = lame->last_offs;
GST_BUFFER_DURATION (outbuf) = lame->last_duration;
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (lame->srcpad));
result = gst_pad_push (lame->srcpad, outbuf);
lame->last_flow = result;
if (result != GST_FLOW_OK) {
GST_DEBUG_OBJECT (lame, "flow return: %s", gst_flow_get_name (result));
}
if (GST_CLOCK_TIME_IS_VALID (lame->last_ts))
lame->eos_ts = lame->last_ts + lame->last_duration;
else
lame->eos_ts = GST_CLOCK_TIME_NONE;
lame->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 (lame, CORE, NEGOTIATION, (NULL),
("encoder not initialized (input is not audio?)"));
return GST_FLOW_ERROR;
}
init_error:
{
gst_buffer_unref (buf);
GST_ELEMENT_ERROR (lame, LIBRARY, INIT, (NULL), (NULL));
return GST_FLOW_ERROR;
}
}
/* set up the encoder state */
static gboolean
gst_lame_setup (GstLame * lame)
{
#define CHECK_ERROR(command) G_STMT_START {\
if ((command) < 0) { \
GST_ERROR_OBJECT (lame, "setup failed: " G_STRINGIFY (command)); \
return FALSE; \
} \
}G_STMT_END
int retval;
GstCaps *allowed_caps;
GST_DEBUG_OBJECT (lame, "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 (lame->setup) {
GST_WARNING_OBJECT (lame, "already setup");
lame->setup = FALSE;
}
lame->lgf = lame_init ();
if (lame->lgf == NULL)
return FALSE;
/* copy the parameters over */
lame_set_in_samplerate (lame->lgf, lame->samplerate);
/* let lame choose default samplerate unless outgoing sample rate is fixed */
allowed_caps = gst_pad_get_allowed_caps (lame->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 (lame, "Setting sample rate to %d as fixed in src caps",
samplerate);
lame_set_out_samplerate (lame->lgf, samplerate);
} else {
GST_DEBUG_OBJECT (lame, "Letting lame choose sample rate");
lame_set_out_samplerate (lame->lgf, 0);
}
gst_caps_unref (allowed_caps);
allowed_caps = NULL;
} else {
GST_DEBUG_OBJECT (lame, "No peer yet, letting lame choose sample rate");
lame_set_out_samplerate (lame->lgf, 0);
}
/* force mono encoding if we only have one channel */
if (lame->num_channels == 1)
lame->mode = 3;
else
lame->mode = lame->requested_mode;
CHECK_ERROR (lame_set_num_channels (lame->lgf, lame->num_channels));
CHECK_AND_FIXUP_BITRATE (lame, "bitrate", lame->bitrate, lame->free_format);
CHECK_ERROR (lame_set_brate (lame->lgf, lame->bitrate));
CHECK_ERROR (lame_set_compression_ratio (lame->lgf, lame->compression_ratio));
CHECK_ERROR (lame_set_quality (lame->lgf, lame->quality));
CHECK_ERROR (lame_set_mode (lame->lgf, lame->mode));
CHECK_ERROR (lame_set_force_ms (lame->lgf, lame->force_ms));
CHECK_ERROR (lame_set_free_format (lame->lgf, lame->free_format));
CHECK_ERROR (lame_set_copyright (lame->lgf, lame->copyright));
CHECK_ERROR (lame_set_original (lame->lgf, lame->original));
CHECK_ERROR (lame_set_error_protection (lame->lgf, lame->error_protection));
CHECK_ERROR (lame_set_extension (lame->lgf, lame->extension));
CHECK_ERROR (lame_set_strict_ISO (lame->lgf, lame->strict_iso));
CHECK_ERROR (lame_set_disable_reservoir (lame->lgf, lame->disable_reservoir));
CHECK_ERROR (lame_set_VBR (lame->lgf, lame->vbr));
CHECK_ERROR (lame_set_VBR_q (lame->lgf, lame->vbr_quality));
CHECK_ERROR (lame_set_VBR_mean_bitrate_kbps (lame->lgf,
lame->vbr_mean_bitrate));
CHECK_AND_FIXUP_BITRATE (lame, "vbr-min-bitrate", lame->vbr_min_bitrate,
lame->free_format);
CHECK_ERROR (lame_set_VBR_min_bitrate_kbps (lame->lgf,
lame->vbr_min_bitrate));
CHECK_AND_FIXUP_BITRATE (lame, "vbr-max-bitrate", lame->vbr_max_bitrate,
lame->free_format);
CHECK_ERROR (lame_set_VBR_max_bitrate_kbps (lame->lgf,
lame->vbr_max_bitrate));
CHECK_ERROR (lame_set_VBR_hard_min (lame->lgf, lame->vbr_hard_min));
CHECK_ERROR (lame_set_lowpassfreq (lame->lgf, lame->lowpass_freq));
CHECK_ERROR (lame_set_lowpasswidth (lame->lgf, lame->lowpass_width));
CHECK_ERROR (lame_set_highpassfreq (lame->lgf, lame->highpass_freq));
CHECK_ERROR (lame_set_highpasswidth (lame->lgf, lame->highpass_width));
CHECK_ERROR (lame_set_ATHonly (lame->lgf, lame->ath_only));
CHECK_ERROR (lame_set_ATHshort (lame->lgf, lame->ath_short));
CHECK_ERROR (lame_set_noATH (lame->lgf, lame->no_ath));
CHECK_ERROR (lame_set_ATHlower (lame->lgf, lame->ath_lower));
CHECK_ERROR (lame_set_allow_diff_short (lame->lgf, lame->allow_diff_short));
CHECK_ERROR (lame_set_no_short_blocks (lame->lgf, lame->no_short_blocks));
CHECK_ERROR (lame_set_emphasis (lame->lgf, lame->emphasis));
CHECK_ERROR (lame_set_bWriteVbrTag (lame->lgf, 0));
#ifdef GSTLAME_PRESET
if (lame->preset > 0) {
CHECK_ERROR (lame_set_preset (lame->lgf, lame->preset));
}
#endif
/* initialize the lame encoder */
if ((retval = lame_init_params (lame->lgf)) >= 0) {
lame->setup = TRUE;
/* FIXME: it would be nice to print out the mode here */
GST_INFO ("lame encoder setup (%d kbit/s, %d Hz, %d channels)",
lame->bitrate, lame->samplerate, lame->num_channels);
} else {
GST_ERROR_OBJECT (lame, "lame_init_params returned %d", retval);
}
GST_DEBUG_OBJECT (lame, "done with setup");
return lame->setup;
#undef CHECK_ERROR
}
static GstStateChangeReturn
gst_lame_change_state (GstElement * element, GstStateChange transition)
{
GstLame *lame;
GstStateChangeReturn result;
lame = GST_LAME (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
lame->last_flow = GST_FLOW_OK;
lame->last_ts = GST_CLOCK_TIME_NONE;
lame->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_lame_release_memory (lame);
break;
default:
break;
}
return result;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (debug, "lame", 0, "lame mp3 encoder");
#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, "lame", GST_RANK_NONE, GST_TYPE_LAME))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"lame",
"Encode MP3s with LAME",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
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