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gstreamer/ext/lame/gstlame.c

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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: lame, 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>Note</title>
* This element is deprecated, use the lame element instead
* which provides a much simpler interface and results in better MP3 files.
* </refsect2>
*
* <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)
*/
/* FIXME 0.11: Remove all properties except the useful ones. Nobody knows what most
* properties are doing and they're intended for LAME developers only.
*/
#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
/* 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 ]")
);
static struct
{
gint bitrate;
gfloat compression_ratio;
gint quality;
gint mode;
gboolean force_ms;
gboolean free_format;
gboolean copyright;
gboolean original;
gboolean error_protection;
gboolean extension;
gboolean strict_iso;
gboolean disable_reservoir;
gint vbr;
gint vbr_quality;
gint vbr_mean_bitrate;
gint vbr_min_bitrate;
gint vbr_max_bitrate;
gint vbr_hard_min;
gint lowpass_freq;
gint lowpass_width;
gint highpass_freq;
gint highpass_width;
gboolean ath_only;
gboolean ath_short;
gboolean no_ath;
gint ath_type;
gint ath_lower;
gboolean allow_diff_short;
gboolean no_short_blocks;
gboolean emphasis;
gint preset;
} gst_lame_default_settings;
/********** 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 gboolean gst_lame_start (GstAudioEncoder * enc);
static gboolean gst_lame_stop (GstAudioEncoder * enc);
static gboolean gst_lame_set_format (GstAudioEncoder * enc,
GstAudioInfo * info);
static GstFlowReturn gst_lame_handle_frame (GstAudioEncoder * enc,
GstBuffer * in_buf);
static void gst_lame_flush (GstAudioEncoder * enc);
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_setup (GstLame * lame);
static void
gst_lame_add_interfaces (GType lame_type)
{
static const GInterfaceInfo tag_setter_info = { NULL, NULL, NULL };
/* FIXME: remove support for the GstTagSetter interface in 0.11 */
g_type_add_interface_static (lame_type, GST_TYPE_TAG_SETTER,
&tag_setter_info);
}
GST_BOILERPLATE_FULL (GstLame, gst_lame, GstAudioEncoder,
GST_TYPE_AUDIO_ENCODER, gst_lame_add_interfaces);
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_static_pad_template (element_class,
&gst_lame_src_template);
gst_element_class_add_static_pad_template (element_class,
&gst_lame_sink_template);
gst_element_class_set_details_simple (element_class, "L.A.M.E. mp3 encoder",
"Codec/Encoder/Audio",
"High-quality free MP3 encoder (deprecated)",
"Erik Walthinsen <omega@cse.ogi.edu>, " "Wim Taymans <wim@fluendo.com>");
}
static void
gst_lame_class_init (GstLameClass * klass)
{
GObjectClass *gobject_class;
GstAudioEncoderClass *base_class;
gobject_class = (GObjectClass *) klass;
base_class = (GstAudioEncoderClass *) klass;
gobject_class->set_property = gst_lame_set_property;
gobject_class->get_property = gst_lame_get_property;
gobject_class->finalize = gst_lame_finalize;
base_class->start = GST_DEBUG_FUNCPTR (gst_lame_start);
base_class->stop = GST_DEBUG_FUNCPTR (gst_lame_stop);
base_class->set_format = GST_DEBUG_FUNCPTR (gst_lame_set_format);
base_class->handle_frame = GST_DEBUG_FUNCPTR (gst_lame_handle_frame);
base_class->flush = GST_DEBUG_FUNCPTR (gst_lame_flush);
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)",
0, 320, gst_lame_default_settings.bitrate,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/* 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, gst_lame_default_settings.compression_ratio,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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,
gst_lame_default_settings.quality,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MODE,
g_param_spec_enum ("mode", "Mode", "Encoding mode", GST_TYPE_LAME_MODE,
gst_lame_default_settings.mode,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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", gst_lame_default_settings.force_ms,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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",
gst_lame_default_settings.free_format,
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_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_lame_default_settings.original,
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 16 bit checksum to every frame",
gst_lame_default_settings.error_protection,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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, FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EXTENSION,
g_param_spec_boolean ("extension", "Extension", "Extension",
gst_lame_default_settings.extension,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR,
g_param_spec_enum ("vbr", "VBR", "Specify bitrate mode",
GST_TYPE_LAME_VBRMODE, gst_lame_default_settings.vbr,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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, gst_lame_default_settings.vbr_quality,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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", 0, 320,
gst_lame_default_settings.vbr_mean_bitrate,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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)", 0, 320,
gst_lame_default_settings.vbr_min_bitrate,
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 (8, 16, 24, 32, 40, 48, 56, 64, 80, 96, "
"112, 128, 160, 192, 224, 256 or 320)", 0, 320,
gst_lame_default_settings.vbr_max_bitrate,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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,
gst_lame_default_settings.vbr_hard_min,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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,
gst_lame_default_settings.lowpass_freq,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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", -1, G_MAXINT,
gst_lame_default_settings.lowpass_width,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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,
gst_lame_default_settings.highpass_freq,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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", -1, G_MAXINT,
gst_lame_default_settings.highpass_width,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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",
gst_lame_default_settings.ath_only,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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",
gst_lame_default_settings.ath_short,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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",
gst_lame_default_settings.no_ath,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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, gst_lame_default_settings.ath_lower,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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", gst_lame_default_settings.allow_diff_short,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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", gst_lame_default_settings.no_short_blocks,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EMPHASIS,
g_param_spec_boolean ("emphasis", "Emphasis", "Emphasis",
gst_lame_default_settings.emphasis,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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 | G_PARAM_STATIC_STRINGS));
#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, gst_lame_default_settings.preset,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
#endif
}
static gboolean
gst_lame_set_format (GstAudioEncoder * enc, GstAudioInfo * info)
{
GstLame *lame;
gint out_samplerate;
gint version;
GstCaps *othercaps;
GstClockTime latency;
lame = GST_LAME (enc);
/* parameters already parsed for us */
lame->samplerate = GST_AUDIO_INFO_RATE (info);
lame->num_channels = GST_AUDIO_INFO_CHANNELS (info);
/* but we might be asked to reconfigure, so reset */
gst_lame_release_memory (lame);
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);
}
lame->out_samplerate = out_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 (GST_AUDIO_ENCODER_SRC_PAD (lame), othercaps);
gst_caps_unref (othercaps);
/* base class feedback:
* - we will handle buffers, just hand us all available
* - report latency */
latency = gst_util_uint64_scale_int (lame_get_framesize (lame->lgf),
GST_SECOND, lame->samplerate);
gst_audio_encoder_set_latency (enc, latency, latency);
return TRUE;
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, GstLameClass * klass)
{
GST_DEBUG_OBJECT (lame, "starting initialization");
/* Set default settings */
lame->bitrate = gst_lame_default_settings.bitrate;
lame->compression_ratio = gst_lame_default_settings.compression_ratio;
lame->quality = gst_lame_default_settings.quality;
lame->mode = gst_lame_default_settings.mode;
lame->requested_mode = lame->mode;
lame->force_ms = gst_lame_default_settings.force_ms;
lame->free_format = gst_lame_default_settings.free_format;
lame->copyright = gst_lame_default_settings.copyright;
lame->original = gst_lame_default_settings.original;
lame->error_protection = gst_lame_default_settings.error_protection;
lame->extension = gst_lame_default_settings.extension;
lame->strict_iso = gst_lame_default_settings.strict_iso;
lame->disable_reservoir = gst_lame_default_settings.disable_reservoir;
lame->vbr = gst_lame_default_settings.vbr;
lame->vbr_quality = gst_lame_default_settings.vbr_quality;
lame->vbr_mean_bitrate = gst_lame_default_settings.vbr_mean_bitrate;
lame->vbr_min_bitrate = gst_lame_default_settings.vbr_min_bitrate;
lame->vbr_max_bitrate = gst_lame_default_settings.vbr_max_bitrate;
lame->vbr_hard_min = gst_lame_default_settings.vbr_hard_min;
lame->lowpass_freq = gst_lame_default_settings.lowpass_freq;
lame->lowpass_width = gst_lame_default_settings.lowpass_width;
lame->highpass_freq = gst_lame_default_settings.highpass_freq;
lame->highpass_width = gst_lame_default_settings.highpass_width;
lame->ath_only = gst_lame_default_settings.ath_only;
lame->ath_short = gst_lame_default_settings.ath_short;
lame->no_ath = gst_lame_default_settings.no_ath;
lame->ath_lower = gst_lame_default_settings.ath_lower;
lame->allow_diff_short = gst_lame_default_settings.allow_diff_short;
lame->no_short_blocks = gst_lame_default_settings.no_short_blocks;
lame->emphasis = gst_lame_default_settings.emphasis;
lame->preset = gst_lame_default_settings.preset;
GST_DEBUG_OBJECT (lame, "done initializing");
}
static gboolean
gst_lame_start (GstAudioEncoder * enc)
{
GstLame *lame = GST_LAME (enc);
if (!lame->adapter)
lame->adapter = gst_adapter_new ();
gst_adapter_clear (lame->adapter);
GST_DEBUG_OBJECT (lame, "start");
return TRUE;
}
static gboolean
gst_lame_stop (GstAudioEncoder * enc)
{
GstLame *lame = GST_LAME (enc);
GST_DEBUG_OBJECT (lame, "stop");
if (lame->adapter) {
g_object_unref (lame->adapter);
lame->adapter = NULL;
}
gst_lame_release_memory (lame);
return TRUE;
}
/* <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 == 0) { \
___rate = rate; \
} else 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;
}
}
/* **** credits go to mpegaudioparse **** */
static const guint mp3types_bitrates[2][3][16] = {
{
{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448,},
{0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384,},
{0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320,}
},
{
{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256,},
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,},
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160,}
},
};
static const guint mp3types_freqs[3][3] = { {44100, 48000, 32000},
{22050, 24000, 16000},
{11025, 12000, 8000}
};
static inline guint
mp3_type_frame_length_from_header (GstLame * lame, guint32 header,
guint * put_version, guint * put_layer, guint * put_channels,
guint * put_bitrate, guint * put_samplerate, guint * put_mode,
guint * put_crc)
{
guint length;
gulong mode, samplerate, bitrate, layer, channels, padding, crc;
gulong version;
gint lsf, mpg25;
if (header & (1 << 20)) {
lsf = (header & (1 << 19)) ? 0 : 1;
mpg25 = 0;
} else {
lsf = 1;
mpg25 = 1;
}
version = 1 + lsf + mpg25;
layer = 4 - ((header >> 17) & 0x3);
crc = (header >> 16) & 0x1;
bitrate = (header >> 12) & 0xF;
bitrate = mp3types_bitrates[lsf][layer - 1][bitrate] * 1000;
/* The caller has ensured we have a valid header, so bitrate can't be
zero here. */
g_assert (bitrate != 0);
samplerate = (header >> 10) & 0x3;
samplerate = mp3types_freqs[lsf + mpg25][samplerate];
padding = (header >> 9) & 0x1;
mode = (header >> 6) & 0x3;
channels = (mode == 3) ? 1 : 2;
switch (layer) {
case 1:
length = 4 * ((bitrate * 12) / samplerate + padding);
break;
case 2:
length = (bitrate * 144) / samplerate + padding;
break;
default:
case 3:
length = (bitrate * 144) / (samplerate << lsf) + padding;
break;
}
GST_DEBUG_OBJECT (lame, "Calculated mp3 frame length of %u bytes", length);
GST_DEBUG_OBJECT (lame, "samplerate = %lu, bitrate = %lu, version = %lu, "
"layer = %lu, channels = %lu", samplerate, bitrate, version,
layer, channels);
if (put_version)
*put_version = version;
if (put_layer)
*put_layer = layer;
if (put_channels)
*put_channels = channels;
if (put_bitrate)
*put_bitrate = bitrate;
if (put_samplerate)
*put_samplerate = samplerate;
if (put_mode)
*put_mode = mode;
if (put_crc)
*put_crc = crc;
return length;
}
static gboolean
mp3_sync_check (GstLame * lame, unsigned long head)
{
GST_DEBUG_OBJECT (lame, "checking mp3 header 0x%08lx", head);
/* if it's not a valid sync */
if ((head & 0xffe00000) != 0xffe00000) {
GST_WARNING_OBJECT (lame, "invalid sync");
return FALSE;
}
/* if it's an invalid MPEG version */
if (((head >> 19) & 3) == 0x1) {
GST_WARNING_OBJECT (lame, "invalid MPEG version: 0x%lx", (head >> 19) & 3);
return FALSE;
}
/* if it's an invalid layer */
if (!((head >> 17) & 3)) {
GST_WARNING_OBJECT (lame, "invalid layer: 0x%lx", (head >> 17) & 3);
return FALSE;
}
/* if it's an invalid bitrate */
if (((head >> 12) & 0xf) == 0x0) {
GST_WARNING_OBJECT (lame, "invalid bitrate: 0x%lx."
"Free format files are not supported yet", (head >> 12) & 0xf);
return FALSE;
}
if (((head >> 12) & 0xf) == 0xf) {
GST_WARNING_OBJECT (lame, "invalid bitrate: 0x%lx", (head >> 12) & 0xf);
return FALSE;
}
/* if it's an invalid samplerate */
if (((head >> 10) & 0x3) == 0x3) {
GST_WARNING_OBJECT (lame, "invalid samplerate: 0x%lx", (head >> 10) & 0x3);
return FALSE;
}
if ((head & 0x3) == 0x2) {
/* Ignore this as there are some files with emphasis 0x2 that can
* be played fine. See BGO #537235 */
GST_WARNING_OBJECT (lame, "invalid emphasis: 0x%lx", head & 0x3);
}
return TRUE;
}
/* **** end mpegaudioparse **** */
static GstFlowReturn
gst_lame_finish_frames (GstLame * lame)
{
gint av;
guint header;
GstFlowReturn result = GST_FLOW_OK;
/* limited parsing, we don't expect to lose sync here */
while ((result == GST_FLOW_OK) &&
((av = gst_adapter_available (lame->adapter)) > 4)) {
guint rate, version, layer, size;
GstBuffer *mp3_buf;
const guint8 *data;
data = gst_adapter_peek (lame->adapter, 4);
header = GST_READ_UINT32_BE (data);
if (!mp3_sync_check (lame, header))
goto invalid_header;
size = mp3_type_frame_length_from_header (lame, header, &version, &layer,
NULL, NULL, &rate, NULL, NULL);
if (G_UNLIKELY (layer != 3 || rate != lame->out_samplerate)) {
GST_DEBUG_OBJECT (lame,
"unexpected mp3 header with rate %u, version %u, layer %u",
rate, version, layer);
goto invalid_header;
}
if (size > av) {
/* pretty likely to occur when lame is holding back on us */
GST_LOG_OBJECT (lame, "frame size %u (> %d)", size, av);
break;
}
/* should be ok now */
mp3_buf = gst_adapter_take_buffer (lame->adapter, size);
/* number of samples for MPEG-1, layer 3 */
result = gst_audio_encoder_finish_frame (GST_AUDIO_ENCODER (lame),
mp3_buf, version == 1 ? 1152 : 576);
}
exit:
return result;
/* ERRORS */
invalid_header:
{
GST_ELEMENT_ERROR (lame, STREAM, ENCODE,
("invalid lame mp3 sync header %08X", header), (NULL));
result = GST_FLOW_ERROR;
goto exit;
}
}
static GstFlowReturn
gst_lame_flush_full (GstLame * lame, gboolean push)
{
GstBuffer *buf;
gint size;
GstFlowReturn result = GST_FLOW_OK;
gint av;
if (!lame->lgf)
return GST_FLOW_OK;
buf = gst_buffer_new_and_alloc (7200);
size = lame_encode_flush (lame->lgf, GST_BUFFER_DATA (buf), 7200);
if (size > 0) {
GST_BUFFER_SIZE (buf) = size;
GST_DEBUG_OBJECT (lame, "collecting final %d bytes", size);
gst_adapter_push (lame->adapter, buf);
} else {
GST_DEBUG_OBJECT (lame, "no final packet (size=%d, push=%d)", size, push);
gst_buffer_unref (buf);
result = GST_FLOW_OK;
}
if (push) {
result = gst_lame_finish_frames (lame);
} else {
/* never mind */
gst_adapter_clear (lame->adapter);
}
/* either way, we expect nothing left */
if ((av = gst_adapter_available (lame->adapter))) {
/* should this be more fatal ?? */
GST_WARNING_OBJECT (lame, "unparsed %d bytes left after flushing", av);
/* clean up anyway */
gst_adapter_clear (lame->adapter);
}
return result;
}
static void
gst_lame_flush (GstAudioEncoder * enc)
{
gst_lame_flush_full (GST_LAME (enc), FALSE);
}
static GstFlowReturn
gst_lame_handle_frame (GstAudioEncoder * enc, GstBuffer * buf)
{
GstLame *lame;
guchar *mp3_data;
GstBuffer *mp3_buf;
gint mp3_buffer_size, mp3_size;
GstFlowReturn result;
gint num_samples;
guint8 *data;
guint size;
lame = GST_LAME (enc);
/* squeeze remaining and push */
if (G_UNLIKELY (buf == NULL))
return gst_lame_flush_full (lame, TRUE);
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_buf = gst_buffer_new_and_alloc (mp3_buffer_size);
mp3_data = GST_BUFFER_DATA (mp3_buf);
/* 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);
if (mp3_size < 0) {
g_warning ("error %d", mp3_size);
}
if (G_LIKELY (mp3_size > 0)) {
GST_BUFFER_SIZE (mp3_buf) = mp3_size;
/* unfortunately lame does not provide frame delineated output,
* so collect output and parse into frames ... */
gst_adapter_push (lame->adapter, mp3_buf);
result = gst_lame_finish_frames (lame);
} else {
if (mp3_size < 0) {
/* eat error ? */
g_warning ("error %d", mp3_size);
}
result = GST_FLOW_OK;
gst_buffer_unref (mp3_buf);
}
return result;
}
/* 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 (GST_AUDIO_ENCODER_SRC_PAD (lame));
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 gboolean
gst_lame_get_default_settings (void)
{
lame_global_flags *lgf = NULL;
lgf = lame_init ();
if (lgf == NULL) {
GST_ERROR ("Error initializing LAME");
return FALSE;
}
if (lame_init_params (lgf) < 0) {
GST_ERROR ("Error getting default settings");
return FALSE;
}
gst_lame_default_settings.bitrate = lame_get_brate (lgf);
gst_lame_default_settings.compression_ratio = 0.0; /* lame_get_compression_ratio (lgf); */
gst_lame_default_settings.quality = lame_get_quality (lgf);
gst_lame_default_settings.mode = lame_get_mode (lgf);
gst_lame_default_settings.force_ms = lame_get_force_ms (lgf);
gst_lame_default_settings.free_format = lame_get_free_format (lgf);
gst_lame_default_settings.copyright = lame_get_copyright (lgf);
gst_lame_default_settings.original = lame_get_original (lgf);
gst_lame_default_settings.error_protection = lame_get_error_protection (lgf);
gst_lame_default_settings.extension = lame_get_extension (lgf);
gst_lame_default_settings.strict_iso = lame_get_strict_ISO (lgf);
gst_lame_default_settings.disable_reservoir =
lame_get_disable_reservoir (lgf);
gst_lame_default_settings.vbr = lame_get_VBR (lgf);
gst_lame_default_settings.vbr_quality = lame_get_VBR_q (lgf);
gst_lame_default_settings.vbr_mean_bitrate =
lame_get_VBR_mean_bitrate_kbps (lgf);
gst_lame_default_settings.vbr_min_bitrate =
lame_get_VBR_min_bitrate_kbps (lgf);
gst_lame_default_settings.vbr_max_bitrate =
lame_get_VBR_max_bitrate_kbps (lgf);
gst_lame_default_settings.vbr_hard_min = lame_get_VBR_hard_min (lgf);
gst_lame_default_settings.lowpass_freq = lame_get_lowpassfreq (lgf);
gst_lame_default_settings.lowpass_width = lame_get_lowpasswidth (lgf);
gst_lame_default_settings.highpass_freq = lame_get_highpassfreq (lgf);
gst_lame_default_settings.highpass_width = lame_get_highpasswidth (lgf);
gst_lame_default_settings.ath_only = lame_get_ATHonly (lgf);
gst_lame_default_settings.ath_short = lame_get_ATHshort (lgf);
gst_lame_default_settings.no_ath = lame_get_noATH (lgf);
gst_lame_default_settings.ath_type = lame_get_ATHtype (lgf);
gst_lame_default_settings.ath_lower = lame_get_ATHlower (lgf);
gst_lame_default_settings.allow_diff_short = lame_get_allow_diff_short (lgf);
gst_lame_default_settings.no_short_blocks = lame_get_no_short_blocks (lgf);
gst_lame_default_settings.emphasis = lame_get_emphasis (lgf);
gst_lame_default_settings.preset = 0;
lame_close (lgf);
return TRUE;
}
gboolean
gst_lame_register (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (debug, "lame", 0, "lame mp3 encoder");
if (!gst_lame_get_default_settings ())
return FALSE;
if (!gst_element_register (plugin, "lame", GST_RANK_MARGINAL, GST_TYPE_LAME))
return FALSE;
return TRUE;
}
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