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gstreamer/ext/flac/gstflacenc.c
Sebastian Dröge 18eee7719d flacenc: Properly interprete the result of strcmp()
2011-04-13 16:17:41 +02:00

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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.
*/
/**
* SECTION:element-flacenc
* @see_also: #GstFlacDec
*
* flacenc encodes FLAC streams.
* <ulink url="http://flac.sourceforge.net/">FLAC</ulink>
* is a Free Lossless Audio Codec.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch audiotestsrc num-buffers=100 ! flacenc ! filesink location=beep.flac
* ]|
* </refsect2>
*/
/* TODO: - We currently don't handle discontinuities in the stream in a useful
* way and instead rely on the developer plugging in audiorate if
* the stream contains discontinuities.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <gstflacenc.h>
#include <gst/audio/audio.h>
#include <gst/audio/multichannel.h>
#include <gst/tag/tag.h>
#include <gst/gsttagsetter.h>
/* Taken from http://flac.sourceforge.net/format.html#frame_header */
static const GstAudioChannelPosition channel_positions[8][8] = {
{GST_AUDIO_CHANNEL_POSITION_FRONT_MONO},
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT}, {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER}, {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT}, {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT}, {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_LFE,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT},
/* FIXME: 7/8 channel layouts are not defined in the FLAC specs */
{
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_LFE,
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER}, {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_LFE,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT}
};
#define FLAC_SINK_CAPS \
"audio/x-raw-int, " \
"endianness = (int) BYTE_ORDER, " \
"signed = (boolean) TRUE, " \
"width = (int) 8, " \
"depth = (int) 8, " \
"rate = (int) [ 1, 655350 ], " \
"channels = (int) [ 1, 8 ]; " \
"audio/x-raw-int, " \
"endianness = (int) BYTE_ORDER, " \
"signed = (boolean) TRUE, " \
"width = (int) 16, " \
"depth = (int) { 12, 16 }, " \
"rate = (int) [ 1, 655350 ], " \
"channels = (int) [ 1, 8 ]; " \
"audio/x-raw-int, " \
"endianness = (int) BYTE_ORDER, " \
"signed = (boolean) TRUE, " \
"width = (int) 32, " \
"depth = (int) { 20, 24 }, " \
"rate = (int) [ 1, 655350 ], " \
"channels = (int) [ 1, 8 ]"
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-flac")
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (FLAC_SINK_CAPS)
);
enum
{
PROP_0,
PROP_QUALITY,
PROP_STREAMABLE_SUBSET,
PROP_MID_SIDE_STEREO,
PROP_LOOSE_MID_SIDE_STEREO,
PROP_BLOCKSIZE,
PROP_MAX_LPC_ORDER,
PROP_QLP_COEFF_PRECISION,
PROP_QLP_COEFF_PREC_SEARCH,
PROP_ESCAPE_CODING,
PROP_EXHAUSTIVE_MODEL_SEARCH,
PROP_MIN_RESIDUAL_PARTITION_ORDER,
PROP_MAX_RESIDUAL_PARTITION_ORDER,
PROP_RICE_PARAMETER_SEARCH_DIST,
PROP_PADDING,
PROP_SEEKPOINTS
};
GST_DEBUG_CATEGORY_STATIC (flacenc_debug);
#define GST_CAT_DEFAULT flacenc_debug
#define _do_init(type) \
G_STMT_START{ \
static const GInterfaceInfo tag_setter_info = { \
NULL, \
NULL, \
NULL \
}; \
static const GInterfaceInfo preset_info = { \
NULL, \
NULL, \
NULL \
}; \
g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, \
&tag_setter_info); \
g_type_add_interface_static (type, GST_TYPE_PRESET, \
&preset_info); \
}G_STMT_END
GST_BOILERPLATE_FULL (GstFlacEnc, gst_flac_enc, GstElement, GST_TYPE_ELEMENT,
_do_init);
static void gst_flac_enc_finalize (GObject * object);
static gboolean gst_flac_enc_sink_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_flac_enc_sink_getcaps (GstPad * pad);
static gboolean gst_flac_enc_sink_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_flac_enc_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_flac_enc_update_quality (GstFlacEnc * flacenc,
gint quality);
static void gst_flac_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_flac_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_flac_enc_change_state (GstElement * element,
GstStateChange transition);
static FLAC__StreamEncoderWriteStatus
gst_flac_enc_write_callback (const FLAC__StreamEncoder * encoder,
const FLAC__byte buffer[], size_t bytes,
unsigned samples, unsigned current_frame, void *client_data);
static FLAC__StreamEncoderSeekStatus
gst_flac_enc_seek_callback (const FLAC__StreamEncoder * encoder,
FLAC__uint64 absolute_byte_offset, void *client_data);
static FLAC__StreamEncoderTellStatus
gst_flac_enc_tell_callback (const FLAC__StreamEncoder * encoder,
FLAC__uint64 * absolute_byte_offset, void *client_data);
typedef struct
{
gboolean exhaustive_model_search;
gboolean escape_coding;
gboolean mid_side;
gboolean loose_mid_side;
guint qlp_coeff_precision;
gboolean qlp_coeff_prec_search;
guint min_residual_partition_order;
guint max_residual_partition_order;
guint rice_parameter_search_dist;
guint max_lpc_order;
guint blocksize;
}
GstFlacEncParams;
static const GstFlacEncParams flacenc_params[] = {
{FALSE, FALSE, FALSE, FALSE, 0, FALSE, 2, 2, 0, 0, 1152},
{FALSE, FALSE, TRUE, TRUE, 0, FALSE, 2, 2, 0, 0, 1152},
{FALSE, FALSE, TRUE, FALSE, 0, FALSE, 0, 3, 0, 0, 1152},
{FALSE, FALSE, FALSE, FALSE, 0, FALSE, 3, 3, 0, 6, 4608},
{FALSE, FALSE, TRUE, TRUE, 0, FALSE, 3, 3, 0, 8, 4608},
{FALSE, FALSE, TRUE, FALSE, 0, FALSE, 3, 3, 0, 8, 4608},
{FALSE, FALSE, TRUE, FALSE, 0, FALSE, 0, 4, 0, 8, 4608},
{TRUE, FALSE, TRUE, FALSE, 0, FALSE, 0, 6, 0, 8, 4608},
{TRUE, FALSE, TRUE, FALSE, 0, FALSE, 0, 6, 0, 12, 4608},
{TRUE, TRUE, TRUE, FALSE, 0, FALSE, 0, 16, 0, 32, 4608},
};
#define DEFAULT_QUALITY 5
#define DEFAULT_PADDING 0
#define DEFAULT_SEEKPOINTS 0
#define GST_TYPE_FLAC_ENC_QUALITY (gst_flac_enc_quality_get_type ())
static GType
gst_flac_enc_quality_get_type (void)
{
static GType qtype = 0;
if (qtype == 0) {
static const GEnumValue values[] = {
{0, "0 - Fastest compression", "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 - Highest compression", "8"},
{9, "9 - Insane", "9"},
{0, NULL, NULL}
};
qtype = g_enum_register_static ("GstFlacEncQuality", values);
}
return qtype;
}
static void
gst_flac_enc_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 (&src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_factory));
gst_element_class_set_details_simple (element_class, "FLAC audio encoder",
"Codec/Encoder/Audio",
"Encodes audio with the FLAC lossless audio encoder",
"Wim Taymans <wim.taymans@chello.be>");
GST_DEBUG_CATEGORY_INIT (flacenc_debug, "flacenc", 0,
"Flac encoding element");
}
static void
gst_flac_enc_class_init (GstFlacEncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->set_property = gst_flac_enc_set_property;
gobject_class->get_property = gst_flac_enc_get_property;
gobject_class->finalize = gst_flac_enc_finalize;
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_QUALITY,
g_param_spec_enum ("quality",
"Quality",
"Speed versus compression tradeoff",
GST_TYPE_FLAC_ENC_QUALITY, DEFAULT_QUALITY,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_STREAMABLE_SUBSET, g_param_spec_boolean ("streamable-subset",
"Streamable subset",
"true to limit encoder to generating a Subset stream, else false",
TRUE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MID_SIDE_STEREO,
g_param_spec_boolean ("mid-side-stereo", "Do mid side stereo",
"Do mid side stereo (only for stereo input)",
flacenc_params[DEFAULT_QUALITY].mid_side,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_LOOSE_MID_SIDE_STEREO, g_param_spec_boolean ("loose-mid-side-stereo",
"Loose mid side stereo", "Loose mid side stereo",
flacenc_params[DEFAULT_QUALITY].loose_mid_side,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BLOCKSIZE,
g_param_spec_uint ("blocksize", "Blocksize", "Blocksize in samples",
FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE,
flacenc_params[DEFAULT_QUALITY].blocksize,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_LPC_ORDER,
g_param_spec_uint ("max-lpc-order", "Max LPC order",
"Max LPC order; 0 => use only fixed predictors", 0,
FLAC__MAX_LPC_ORDER, flacenc_params[DEFAULT_QUALITY].max_lpc_order,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_QLP_COEFF_PRECISION, g_param_spec_uint ("qlp-coeff-precision",
"QLP coefficients precision",
"Precision in bits of quantized linear-predictor coefficients; 0 = automatic",
0, 32, flacenc_params[DEFAULT_QUALITY].qlp_coeff_precision,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_QLP_COEFF_PREC_SEARCH, g_param_spec_boolean ("qlp-coeff-prec-search",
"Do QLP coefficients precision search",
"false = use qlp_coeff_precision, "
"true = search around qlp_coeff_precision, take best",
flacenc_params[DEFAULT_QUALITY].qlp_coeff_prec_search,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ESCAPE_CODING,
g_param_spec_boolean ("escape-coding", "Do Escape coding",
"search for escape codes in the entropy coding stage "
"for slightly better compression",
flacenc_params[DEFAULT_QUALITY].escape_coding,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_EXHAUSTIVE_MODEL_SEARCH,
g_param_spec_boolean ("exhaustive-model-search",
"Do exhaustive model search",
"do exhaustive search of LP coefficient quantization (expensive!)",
flacenc_params[DEFAULT_QUALITY].exhaustive_model_search,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_MIN_RESIDUAL_PARTITION_ORDER,
g_param_spec_uint ("min-residual-partition-order",
"Min residual partition order",
"Min residual partition order (above 4 doesn't usually help much)", 0,
16, flacenc_params[DEFAULT_QUALITY].min_residual_partition_order,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_MAX_RESIDUAL_PARTITION_ORDER,
g_param_spec_uint ("max-residual-partition-order",
"Max residual partition order",
"Max residual partition order (above 4 doesn't usually help much)", 0,
16, flacenc_params[DEFAULT_QUALITY].max_residual_partition_order,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_RICE_PARAMETER_SEARCH_DIST,
g_param_spec_uint ("rice-parameter-search-dist",
"rice_parameter_search_dist",
"0 = try only calc'd parameter k; else try all [k-dist..k+dist] "
"parameters, use best", 0, FLAC__MAX_RICE_PARTITION_ORDER,
flacenc_params[DEFAULT_QUALITY].rice_parameter_search_dist,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
/**
* GstFlacEnc:padding
*
* Write a PADDING block with this length in bytes
*
* Since: 0.10.16
**/
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_PADDING,
g_param_spec_uint ("padding",
"Padding",
"Write a PADDING block with this length in bytes", 0, G_MAXUINT,
DEFAULT_PADDING,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
/**
* GstFlacEnc:seekpoints
*
* Write a SEEKTABLE block with a specific number of seekpoints
* or with a specific interval spacing.
*
* Since: 0.10.18
**/
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_SEEKPOINTS,
g_param_spec_int ("seekpoints",
"Seekpoints",
"Add SEEKTABLE metadata (if > 0, number of entries, if < 0, interval in sec)",
-G_MAXINT, G_MAXINT,
DEFAULT_SEEKPOINTS,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state = gst_flac_enc_change_state;
}
static void
gst_flac_enc_init (GstFlacEnc * flacenc, GstFlacEncClass * klass)
{
flacenc->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
gst_pad_set_chain_function (flacenc->sinkpad,
GST_DEBUG_FUNCPTR (gst_flac_enc_chain));
gst_pad_set_event_function (flacenc->sinkpad,
GST_DEBUG_FUNCPTR (gst_flac_enc_sink_event));
gst_pad_set_getcaps_function (flacenc->sinkpad,
GST_DEBUG_FUNCPTR (gst_flac_enc_sink_getcaps));
gst_pad_set_setcaps_function (flacenc->sinkpad,
GST_DEBUG_FUNCPTR (gst_flac_enc_sink_setcaps));
gst_element_add_pad (GST_ELEMENT (flacenc), flacenc->sinkpad);
flacenc->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
gst_pad_use_fixed_caps (flacenc->srcpad);
gst_element_add_pad (GST_ELEMENT (flacenc), flacenc->srcpad);
flacenc->encoder = FLAC__stream_encoder_new ();
flacenc->offset = 0;
flacenc->samples_written = 0;
flacenc->channels = 0;
gst_flac_enc_update_quality (flacenc, DEFAULT_QUALITY);
flacenc->tags = gst_tag_list_new ();
flacenc->got_headers = FALSE;
flacenc->headers = NULL;
flacenc->last_flow = GST_FLOW_OK;
}
static void
gst_flac_enc_finalize (GObject * object)
{
GstFlacEnc *flacenc = GST_FLAC_ENC (object);
gst_tag_list_free (flacenc->tags);
FLAC__stream_encoder_delete (flacenc->encoder);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
add_one_tag (const GstTagList * list, const gchar * tag, gpointer user_data)
{
GList *comments;
GList *it;
GstFlacEnc *flacenc = GST_FLAC_ENC (user_data);
/* IMAGE and PREVIEW_IMAGE tags are already written
* differently, no need to store them inside the
* vorbiscomments too */
if (strcmp (tag, GST_TAG_IMAGE) == 0
|| strcmp (tag, GST_TAG_PREVIEW_IMAGE) == 0)
return;
comments = gst_tag_to_vorbis_comments (list, tag);
for (it = comments; it != NULL; it = it->next) {
FLAC__StreamMetadata_VorbisComment_Entry commment_entry;
commment_entry.length = strlen (it->data);
commment_entry.entry = it->data;
FLAC__metadata_object_vorbiscomment_insert_comment (flacenc->meta[0],
flacenc->meta[0]->data.vorbis_comment.num_comments,
commment_entry, TRUE);
g_free (it->data);
}
g_list_free (comments);
}
static void
gst_flac_enc_set_metadata (GstFlacEnc * flacenc, guint64 total_samples)
{
const GstTagList *user_tags;
GstTagList *copy;
gint entries = 1;
gint n_images, n_preview_images;
g_return_if_fail (flacenc != NULL);
user_tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (flacenc));
if ((flacenc->tags == NULL) && (user_tags == NULL)) {
return;
}
copy = gst_tag_list_merge (user_tags, flacenc->tags,
gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (flacenc)));
n_images = gst_tag_list_get_tag_size (copy, GST_TAG_IMAGE);
n_preview_images = gst_tag_list_get_tag_size (copy, GST_TAG_PREVIEW_IMAGE);
flacenc->meta =
g_new0 (FLAC__StreamMetadata *, 3 + n_images + n_preview_images);
flacenc->meta[0] =
FLAC__metadata_object_new (FLAC__METADATA_TYPE_VORBIS_COMMENT);
gst_tag_list_foreach (copy, add_one_tag, flacenc);
if (n_images + n_preview_images > 0) {
GstBuffer *buffer;
GstCaps *caps;
GstStructure *structure;
GstTagImageType image_type = GST_TAG_IMAGE_TYPE_NONE;
gint i;
for (i = 0; i < n_images + n_preview_images; i++) {
if (i < n_images) {
if (!gst_tag_list_get_buffer_index (copy, GST_TAG_IMAGE, i, &buffer))
continue;
} else {
if (!gst_tag_list_get_buffer_index (copy, GST_TAG_PREVIEW_IMAGE,
i - n_images, &buffer))
continue;
}
flacenc->meta[entries] =
FLAC__metadata_object_new (FLAC__METADATA_TYPE_PICTURE);
caps = gst_buffer_get_caps (buffer);
structure = gst_caps_get_structure (caps, 0);
gst_structure_get (structure, "image-type", GST_TYPE_TAG_IMAGE_TYPE,
&image_type, NULL);
/* Convert to ID3v2 APIC image type */
if (image_type == GST_TAG_IMAGE_TYPE_NONE)
image_type = (i < n_images) ? 0x00 : 0x01;
else
image_type = image_type + 2;
FLAC__metadata_object_picture_set_data (flacenc->meta[entries],
GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), TRUE);
/* FIXME: There's no way to set the picture type in libFLAC */
flacenc->meta[entries]->data.picture.type = image_type;
FLAC__metadata_object_picture_set_mime_type (flacenc->meta[entries],
(char *) gst_structure_get_name (structure), TRUE);
gst_caps_unref (caps);
gst_buffer_unref (buffer);
entries++;
}
}
if (flacenc->seekpoints && total_samples != GST_CLOCK_TIME_NONE) {
gboolean res;
guint samples;
flacenc->meta[entries] =
FLAC__metadata_object_new (FLAC__METADATA_TYPE_SEEKTABLE);
if (flacenc->seekpoints > 0) {
res =
FLAC__metadata_object_seektable_template_append_spaced_points
(flacenc->meta[entries], flacenc->seekpoints, total_samples);
} else {
samples = -flacenc->seekpoints * flacenc->sample_rate;
res =
FLAC__metadata_object_seektable_template_append_spaced_points_by_samples
(flacenc->meta[entries], samples, total_samples);
}
if (!res) {
GST_DEBUG_OBJECT (flacenc, "adding seekpoint template %d failed",
flacenc->seekpoints);
FLAC__metadata_object_delete (flacenc->meta[1]);
flacenc->meta[entries] = NULL;
} else {
entries++;
}
} else if (flacenc->seekpoints && total_samples == GST_CLOCK_TIME_NONE) {
GST_WARNING_OBJECT (flacenc, "total time unknown; can not add seekpoints");
}
if (flacenc->padding > 0) {
flacenc->meta[entries] =
FLAC__metadata_object_new (FLAC__METADATA_TYPE_PADDING);
flacenc->meta[entries]->length = flacenc->padding;
entries++;
}
if (FLAC__stream_encoder_set_metadata (flacenc->encoder,
flacenc->meta, entries) != true)
g_warning ("Dude, i'm already initialized!");
gst_tag_list_free (copy);
}
static void
gst_flac_enc_caps_append_structure_with_widths (GstCaps * caps,
GstStructure * s)
{
GstStructure *tmp;
GValue list = { 0, };
GValue depth = { 0, };
tmp = gst_structure_copy (s);
gst_structure_set (tmp, "width", G_TYPE_INT, 8, "depth", G_TYPE_INT, 8, NULL);
gst_caps_append_structure (caps, tmp);
tmp = gst_structure_copy (s);
g_value_init (&depth, G_TYPE_INT);
g_value_init (&list, GST_TYPE_LIST);
g_value_set_int (&depth, 12);
gst_value_list_append_value (&list, &depth);
g_value_set_int (&depth, 16);
gst_value_list_append_value (&list, &depth);
gst_structure_set (tmp, "width", G_TYPE_INT, 16, NULL);
gst_structure_set_value (tmp, "depth", &list);
gst_caps_append_structure (caps, tmp);
g_value_reset (&list);
tmp = s;
g_value_set_int (&depth, 20);
gst_value_list_append_value (&list, &depth);
g_value_set_int (&depth, 24);
gst_value_list_append_value (&list, &depth);
gst_structure_set (tmp, "width", G_TYPE_INT, 32, NULL);
gst_structure_set_value (tmp, "depth", &list);
gst_caps_append_structure (caps, tmp);
g_value_unset (&list);
g_value_unset (&depth);
}
static GstCaps *
gst_flac_enc_sink_getcaps (GstPad * pad)
{
GstCaps *ret = NULL;
GST_OBJECT_LOCK (pad);
if (GST_PAD_CAPS (pad)) {
ret = gst_caps_ref (GST_PAD_CAPS (pad));
} else {
gint i, c;
ret = gst_caps_new_empty ();
gst_flac_enc_caps_append_structure_with_widths (ret,
gst_structure_new ("audio/x-raw-int",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"signed", G_TYPE_BOOLEAN, TRUE,
"rate", GST_TYPE_INT_RANGE, 1, 655350,
"channels", GST_TYPE_INT_RANGE, 1, 2, NULL));
for (i = 3; i <= 8; i++) {
GValue positions = { 0, };
GValue pos = { 0, };
GstStructure *s;
g_value_init (&positions, GST_TYPE_ARRAY);
g_value_init (&pos, GST_TYPE_AUDIO_CHANNEL_POSITION);
for (c = 0; c < i; c++) {
g_value_set_enum (&pos, channel_positions[i - 1][c]);
gst_value_array_append_value (&positions, &pos);
}
g_value_unset (&pos);
s = gst_structure_new ("audio/x-raw-int",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"signed", G_TYPE_BOOLEAN, TRUE,
"rate", GST_TYPE_INT_RANGE, 1, 655350,
"channels", G_TYPE_INT, i, NULL);
gst_structure_set_value (s, "channel-positions", &positions);
g_value_unset (&positions);
gst_flac_enc_caps_append_structure_with_widths (ret, s);
}
}
GST_OBJECT_UNLOCK (pad);
GST_DEBUG_OBJECT (pad, "Return caps %" GST_PTR_FORMAT, ret);
return ret;
}
static guint64
gst_flac_enc_query_peer_total_samples (GstFlacEnc * flacenc, GstPad * pad)
{
GstFormat fmt = GST_FORMAT_DEFAULT;
gint64 duration;
GST_DEBUG_OBJECT (flacenc, "querying peer for DEFAULT format duration");
if (gst_pad_query_peer_duration (pad, &fmt, &duration)
&& fmt == GST_FORMAT_DEFAULT && duration != GST_CLOCK_TIME_NONE)
goto done;
fmt = GST_FORMAT_TIME;
GST_DEBUG_OBJECT (flacenc, "querying peer for TIME format duration");
if (gst_pad_query_peer_duration (pad, &fmt, &duration) &&
fmt == GST_FORMAT_TIME && duration != GST_CLOCK_TIME_NONE) {
GST_DEBUG_OBJECT (flacenc, "peer reported duration %" GST_TIME_FORMAT,
GST_TIME_ARGS (duration));
duration = GST_CLOCK_TIME_TO_FRAMES (duration, flacenc->sample_rate);
goto done;
}
GST_DEBUG_OBJECT (flacenc, "Upstream reported no total samples");
return GST_CLOCK_TIME_NONE;
done:
GST_DEBUG_OBJECT (flacenc,
"Upstream reported %" G_GUINT64_FORMAT " total samples", duration);
return duration;
}
static gboolean
gst_flac_enc_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstFlacEnc *flacenc;
GstStructure *structure;
guint64 total_samples = GST_CLOCK_TIME_NONE;
FLAC__StreamEncoderInitStatus init_status;
gint depth, chans, rate, width;
flacenc = GST_FLAC_ENC (gst_pad_get_parent (pad));
if (FLAC__stream_encoder_get_state (flacenc->encoder) !=
FLAC__STREAM_ENCODER_UNINITIALIZED)
goto encoder_already_initialized;
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "channels", &chans) ||
!gst_structure_get_int (structure, "width", &width) ||
!gst_structure_get_int (structure, "depth", &depth) ||
!gst_structure_get_int (structure, "rate", &rate)) {
GST_DEBUG_OBJECT (flacenc, "incomplete caps: %" GST_PTR_FORMAT, caps);
return FALSE;
}
flacenc->channels = chans;
flacenc->width = width;
flacenc->depth = depth;
flacenc->sample_rate = rate;
caps = gst_caps_new_simple ("audio/x-flac",
"channels", G_TYPE_INT, flacenc->channels,
"rate", G_TYPE_INT, flacenc->sample_rate, NULL);
if (!gst_pad_set_caps (flacenc->srcpad, caps))
goto setting_src_caps_failed;
gst_caps_unref (caps);
total_samples = gst_flac_enc_query_peer_total_samples (flacenc, pad);
FLAC__stream_encoder_set_bits_per_sample (flacenc->encoder, flacenc->depth);
FLAC__stream_encoder_set_sample_rate (flacenc->encoder, flacenc->sample_rate);
FLAC__stream_encoder_set_channels (flacenc->encoder, flacenc->channels);
if (total_samples != GST_CLOCK_TIME_NONE)
FLAC__stream_encoder_set_total_samples_estimate (flacenc->encoder,
MIN (total_samples, G_GUINT64_CONSTANT (0x0FFFFFFFFF)));
gst_flac_enc_set_metadata (flacenc, total_samples);
init_status = FLAC__stream_encoder_init_stream (flacenc->encoder,
gst_flac_enc_write_callback, gst_flac_enc_seek_callback,
gst_flac_enc_tell_callback, NULL, flacenc);
if (init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK)
goto failed_to_initialize;
gst_object_unref (flacenc);
return TRUE;
encoder_already_initialized:
{
g_warning ("flac already initialized -- fixme allow this");
gst_object_unref (flacenc);
return FALSE;
}
setting_src_caps_failed:
{
GST_DEBUG_OBJECT (flacenc,
"Couldn't set caps on source pad: %" GST_PTR_FORMAT, caps);
gst_caps_unref (caps);
gst_object_unref (flacenc);
return FALSE;
}
failed_to_initialize:
{
GST_ELEMENT_ERROR (flacenc, LIBRARY, INIT, (NULL),
("could not initialize encoder (wrong parameters?)"));
gst_object_unref (flacenc);
return FALSE;
}
}
static gboolean
gst_flac_enc_update_quality (GstFlacEnc * flacenc, gint quality)
{
flacenc->quality = quality;
#define DO_UPDATE(name, val, str) \
G_STMT_START { \
if (FLAC__stream_encoder_get_##name (flacenc->encoder) != \
flacenc_params[quality].val) { \
FLAC__stream_encoder_set_##name (flacenc->encoder, \
flacenc_params[quality].val); \
g_object_notify (G_OBJECT (flacenc), str); \
} \
} G_STMT_END
g_object_freeze_notify (G_OBJECT (flacenc));
if (flacenc->channels == 2 || flacenc->channels == 0) {
DO_UPDATE (do_mid_side_stereo, mid_side, "mid_side_stereo");
DO_UPDATE (loose_mid_side_stereo, loose_mid_side, "loose_mid_side");
}
DO_UPDATE (blocksize, blocksize, "blocksize");
DO_UPDATE (max_lpc_order, max_lpc_order, "max_lpc_order");
DO_UPDATE (qlp_coeff_precision, qlp_coeff_precision, "qlp_coeff_precision");
DO_UPDATE (do_qlp_coeff_prec_search, qlp_coeff_prec_search,
"qlp_coeff_prec_search");
DO_UPDATE (do_escape_coding, escape_coding, "escape_coding");
DO_UPDATE (do_exhaustive_model_search, exhaustive_model_search,
"exhaustive_model_search");
DO_UPDATE (min_residual_partition_order, min_residual_partition_order,
"min_residual_partition_order");
DO_UPDATE (max_residual_partition_order, max_residual_partition_order,
"max_residual_partition_order");
DO_UPDATE (rice_parameter_search_dist, rice_parameter_search_dist,
"rice_parameter_search_dist");
#undef DO_UPDATE
g_object_thaw_notify (G_OBJECT (flacenc));
return TRUE;
}
static FLAC__StreamEncoderSeekStatus
gst_flac_enc_seek_callback (const FLAC__StreamEncoder * encoder,
FLAC__uint64 absolute_byte_offset, void *client_data)
{
GstFlacEnc *flacenc;
GstEvent *event;
GstPad *peerpad;
flacenc = GST_FLAC_ENC (client_data);
if (flacenc->stopped)
return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
event = gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_BYTES,
absolute_byte_offset, GST_BUFFER_OFFSET_NONE, 0);
if ((peerpad = gst_pad_get_peer (flacenc->srcpad))) {
gboolean ret = gst_pad_send_event (peerpad, event);
gst_object_unref (peerpad);
if (ret) {
GST_DEBUG ("Seek to %" G_GUINT64_FORMAT " %s",
(guint64) absolute_byte_offset, "succeeded");
} else {
GST_DEBUG ("Seek to %" G_GUINT64_FORMAT " %s",
(guint64) absolute_byte_offset, "failed");
return FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED;
}
} else {
GST_DEBUG ("Seek to %" G_GUINT64_FORMAT " failed (no peer pad)",
(guint64) absolute_byte_offset);
}
flacenc->offset = absolute_byte_offset;
return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
}
static void
notgst_value_array_append_buffer (GValue * array_val, GstBuffer * buf)
{
GValue value = { 0, };
g_value_init (&value, GST_TYPE_BUFFER);
/* copy buffer to avoid problems with circular refcounts */
buf = gst_buffer_copy (buf);
/* again, for good measure */
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
gst_value_set_buffer (&value, buf);
gst_buffer_unref (buf);
gst_value_array_append_value (array_val, &value);
g_value_unset (&value);
}
#define HDR_TYPE_STREAMINFO 0
#define HDR_TYPE_VORBISCOMMENT 4
static void
gst_flac_enc_process_stream_headers (GstFlacEnc * enc)
{
GstBuffer *vorbiscomment = NULL;
GstBuffer *streaminfo = NULL;
GstBuffer *marker = NULL;
GValue array = { 0, };
GstCaps *caps;
GList *l;
caps = gst_caps_new_simple ("audio/x-flac",
"channels", G_TYPE_INT, enc->channels,
"rate", G_TYPE_INT, enc->sample_rate, NULL);
for (l = enc->headers; l != NULL; l = l->next) {
const guint8 *data;
guint size;
/* mark buffers so oggmux will ignore them if it already muxed the
* header buffers from the streamheaders field in the caps */
l->data = gst_buffer_make_metadata_writable (GST_BUFFER (l->data));
GST_BUFFER_FLAG_SET (GST_BUFFER (l->data), GST_BUFFER_FLAG_IN_CAPS);
data = GST_BUFFER_DATA (GST_BUFFER_CAST (l->data));
size = GST_BUFFER_SIZE (GST_BUFFER_CAST (l->data));
/* find initial 4-byte marker which we need to skip later on */
if (size == 4 && memcmp (data, "fLaC", 4) == 0) {
marker = GST_BUFFER_CAST (l->data);
} else if (size > 1 && (data[0] & 0x7f) == HDR_TYPE_STREAMINFO) {
streaminfo = GST_BUFFER_CAST (l->data);
} else if (size > 1 && (data[0] & 0x7f) == HDR_TYPE_VORBISCOMMENT) {
vorbiscomment = GST_BUFFER_CAST (l->data);
}
}
if (marker == NULL || streaminfo == NULL || vorbiscomment == NULL) {
GST_WARNING_OBJECT (enc, "missing header %p %p %p, muxing into container "
"formats may be broken", marker, streaminfo, vorbiscomment);
goto push_headers;
}
g_value_init (&array, GST_TYPE_ARRAY);
/* add marker including STREAMINFO header */
{
GstBuffer *buf;
guint16 num;
/* minus one for the marker that is merged with streaminfo here */
num = g_list_length (enc->headers) - 1;
buf = gst_buffer_new_and_alloc (13 + GST_BUFFER_SIZE (streaminfo));
GST_BUFFER_DATA (buf)[0] = 0x7f;
memcpy (GST_BUFFER_DATA (buf) + 1, "FLAC", 4);
GST_BUFFER_DATA (buf)[5] = 0x01; /* mapping version major */
GST_BUFFER_DATA (buf)[6] = 0x00; /* mapping version minor */
GST_BUFFER_DATA (buf)[7] = (num & 0xFF00) >> 8;
GST_BUFFER_DATA (buf)[8] = (num & 0x00FF) >> 0;
memcpy (GST_BUFFER_DATA (buf) + 9, "fLaC", 4);
memcpy (GST_BUFFER_DATA (buf) + 13, GST_BUFFER_DATA (streaminfo),
GST_BUFFER_SIZE (streaminfo));
notgst_value_array_append_buffer (&array, buf);
gst_buffer_unref (buf);
}
/* add VORBISCOMMENT header */
notgst_value_array_append_buffer (&array, vorbiscomment);
/* add other headers, if there are any */
for (l = enc->headers; l != NULL; l = l->next) {
if (GST_BUFFER_CAST (l->data) != marker &&
GST_BUFFER_CAST (l->data) != streaminfo &&
GST_BUFFER_CAST (l->data) != vorbiscomment) {
notgst_value_array_append_buffer (&array, GST_BUFFER_CAST (l->data));
}
}
gst_structure_set_value (gst_caps_get_structure (caps, 0),
"streamheader", &array);
g_value_unset (&array);
push_headers:
gst_pad_set_caps (enc->srcpad, caps);
/* push header buffers; update caps, so when we push the first buffer the
* negotiated caps will change to caps that include the streamheader field */
for (l = enc->headers; l != NULL; l = l->next) {
GstBuffer *buf;
buf = GST_BUFFER (l->data);
gst_buffer_set_caps (buf, caps);
GST_LOG_OBJECT (enc, "Pushing header buffer, size %u bytes",
GST_BUFFER_SIZE (buf));
GST_MEMDUMP_OBJECT (enc, "header buffer", GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
(void) gst_pad_push (enc->srcpad, buf);
l->data = NULL;
}
g_list_free (enc->headers);
enc->headers = NULL;
gst_caps_unref (caps);
}
static FLAC__StreamEncoderWriteStatus
gst_flac_enc_write_callback (const FLAC__StreamEncoder * encoder,
const FLAC__byte buffer[], size_t bytes,
unsigned samples, unsigned current_frame, void *client_data)
{
GstFlowReturn ret = GST_FLOW_OK;
GstFlacEnc *flacenc;
GstBuffer *outbuf;
flacenc = GST_FLAC_ENC (client_data);
if (flacenc->stopped)
return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
outbuf = gst_buffer_new_and_alloc (bytes);
memcpy (GST_BUFFER_DATA (outbuf), buffer, bytes);
if (samples > 0 && flacenc->samples_written != (guint64) - 1) {
guint64 granulepos;
GST_BUFFER_TIMESTAMP (outbuf) = flacenc->start_ts +
GST_FRAMES_TO_CLOCK_TIME (flacenc->samples_written,
flacenc->sample_rate);
GST_BUFFER_DURATION (outbuf) =
GST_FRAMES_TO_CLOCK_TIME (samples, flacenc->sample_rate);
/* offset_end = granulepos for ogg muxer */
granulepos =
flacenc->granulepos_offset + flacenc->samples_written + samples;
GST_BUFFER_OFFSET_END (outbuf) = granulepos;
/* offset = timestamp corresponding to granulepos for ogg muxer
* (see vorbisenc for a much more elaborate version of this) */
GST_BUFFER_OFFSET (outbuf) =
GST_FRAMES_TO_CLOCK_TIME (granulepos, flacenc->sample_rate);
} else {
GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
GST_BUFFER_OFFSET (outbuf) =
flacenc->samples_written * flacenc->width * flacenc->channels;
GST_BUFFER_OFFSET_END (outbuf) = 0;
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_IN_CAPS);
}
/* we assume libflac passes us stuff neatly framed */
if (!flacenc->got_headers) {
if (samples == 0) {
GST_DEBUG_OBJECT (flacenc, "Got header, queueing (%u bytes)",
(guint) bytes);
flacenc->headers = g_list_append (flacenc->headers, outbuf);
/* note: it's important that we increase our byte offset */
goto out;
} else {
GST_INFO_OBJECT (flacenc, "Non-header packet, we have all headers now");
gst_flac_enc_process_stream_headers (flacenc);
flacenc->got_headers = TRUE;
}
} else if (flacenc->got_headers && samples == 0) {
GST_DEBUG_OBJECT (flacenc, "Fixing up headers at pos=%" G_GUINT64_FORMAT
", size=%u", flacenc->offset, (guint) bytes);
GST_MEMDUMP_OBJECT (flacenc, "Presumed header fragment",
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
} else {
GST_LOG ("Pushing buffer: ts=%" GST_TIME_FORMAT ", samples=%u, size=%u, "
"pos=%" G_GUINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
samples, (guint) bytes, flacenc->offset);
}
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (flacenc->srcpad));
ret = gst_pad_push (flacenc->srcpad, outbuf);
if (ret != GST_FLOW_OK)
GST_DEBUG_OBJECT (flacenc, "flow: %s", gst_flow_get_name (ret));
flacenc->last_flow = ret;
out:
flacenc->offset += bytes;
flacenc->samples_written += samples;
if (ret != GST_FLOW_OK)
return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
}
static FLAC__StreamEncoderTellStatus
gst_flac_enc_tell_callback (const FLAC__StreamEncoder * encoder,
FLAC__uint64 * absolute_byte_offset, void *client_data)
{
GstFlacEnc *flacenc = GST_FLAC_ENC (client_data);
*absolute_byte_offset = flacenc->offset;
return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
}
static gboolean
gst_flac_enc_sink_event (GstPad * pad, GstEvent * event)
{
GstFlacEnc *flacenc;
GstTagList *taglist;
gboolean ret = TRUE;
flacenc = GST_FLAC_ENC (gst_pad_get_parent (pad));
GST_DEBUG ("Received %s event on sinkpad", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:{
GstFormat format;
gint64 start, stream_time;
if (flacenc->offset == 0) {
gst_event_parse_new_segment (event, NULL, NULL, &format, &start, NULL,
&stream_time);
} else {
start = -1;
stream_time = -1;
}
if (start > 0) {
if (flacenc->offset > 0)
GST_DEBUG ("Not handling mid-stream newsegment event");
else
GST_DEBUG ("Not handling newsegment event with non-zero start");
} else {
GstEvent *e = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
0, -1, 0);
ret = gst_pad_push_event (flacenc->srcpad, e);
}
if (stream_time > 0) {
GST_DEBUG ("Not handling non-zero stream time");
}
gst_event_unref (event);
/* don't push it downstream, we'll generate our own via seek to 0 */
break;
}
case GST_EVENT_EOS:
FLAC__stream_encoder_finish (flacenc->encoder);
ret = gst_pad_event_default (pad, event);
break;
case GST_EVENT_TAG:
if (flacenc->tags) {
gst_event_parse_tag (event, &taglist);
gst_tag_list_insert (flacenc->tags, taglist,
gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (flacenc)));
} else {
g_assert_not_reached ();
}
ret = gst_pad_event_default (pad, event);
break;
default:
ret = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (flacenc);
return ret;
}
static gboolean
gst_flac_enc_check_discont (GstFlacEnc * flacenc, GstClockTime expected,
GstClockTime timestamp)
{
guint allowed_diff = GST_SECOND / flacenc->sample_rate / 2;
if ((timestamp + allowed_diff < expected)
|| (timestamp > expected + allowed_diff)) {
GST_ELEMENT_WARNING (flacenc, STREAM, FORMAT, (NULL),
("Stream discontinuity detected (wanted %" GST_TIME_FORMAT " got %"
GST_TIME_FORMAT "). The output will have wrong timestamps,"
" consider using audiorate to handle discontinuities",
GST_TIME_ARGS (expected), GST_TIME_ARGS (timestamp)));
return TRUE;
}
/* TODO: Do something to handle discontinuities in the stream. The FLAC encoder
* unfortunately doesn't have any way to flush it's internal buffers */
return FALSE;
}
static GstFlowReturn
gst_flac_enc_chain (GstPad * pad, GstBuffer * buffer)
{
GstFlacEnc *flacenc;
FLAC__int32 *data;
gulong insize;
gint samples, width;
gulong i;
FLAC__bool res;
flacenc = GST_FLAC_ENC (GST_PAD_PARENT (pad));
/* make sure setcaps has been called and the encoder is set up */
if (G_UNLIKELY (flacenc->depth == 0))
return GST_FLOW_NOT_NEGOTIATED;
width = flacenc->width;
/* Save the timestamp of the first buffer. This will be later
* used as offset for all following buffers */
if (flacenc->start_ts == GST_CLOCK_TIME_NONE) {
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
flacenc->start_ts = GST_BUFFER_TIMESTAMP (buffer);
flacenc->granulepos_offset = gst_util_uint64_scale
(GST_BUFFER_TIMESTAMP (buffer), flacenc->sample_rate, GST_SECOND);
} else {
flacenc->start_ts = 0;
flacenc->granulepos_offset = 0;
}
}
/* Check if we have a continous stream, if not drop some samples or the buffer or
* insert some silence samples */
if (flacenc->next_ts != GST_CLOCK_TIME_NONE
&& GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
gst_flac_enc_check_discont (flacenc, flacenc->next_ts,
GST_BUFFER_TIMESTAMP (buffer));
}
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)
&& GST_BUFFER_DURATION_IS_VALID (buffer))
flacenc->next_ts =
GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer);
else
flacenc->next_ts = GST_CLOCK_TIME_NONE;
insize = GST_BUFFER_SIZE (buffer);
samples = insize / (width >> 3);
data = g_malloc (samples * sizeof (FLAC__int32));
if (width == 8) {
gint8 *indata = (gint8 *) GST_BUFFER_DATA (buffer);
for (i = 0; i < samples; i++)
data[i] = (FLAC__int32) indata[i];
} else if (width == 16) {
gint16 *indata = (gint16 *) GST_BUFFER_DATA (buffer);
for (i = 0; i < samples; i++)
data[i] = (FLAC__int32) indata[i];
} else if (width == 32) {
gint32 *indata = (gint32 *) GST_BUFFER_DATA (buffer);
for (i = 0; i < samples; i++)
data[i] = (FLAC__int32) indata[i];
} else {
g_assert_not_reached ();
}
gst_buffer_unref (buffer);
res = FLAC__stream_encoder_process_interleaved (flacenc->encoder,
(const FLAC__int32 *) data, samples / flacenc->channels);
g_free (data);
if (!res) {
if (flacenc->last_flow == GST_FLOW_OK)
return GST_FLOW_ERROR;
else
return flacenc->last_flow;
}
return GST_FLOW_OK;
}
static void
gst_flac_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFlacEnc *this = GST_FLAC_ENC (object);
GST_OBJECT_LOCK (this);
switch (prop_id) {
case PROP_QUALITY:
gst_flac_enc_update_quality (this, g_value_get_enum (value));
break;
case PROP_STREAMABLE_SUBSET:
FLAC__stream_encoder_set_streamable_subset (this->encoder,
g_value_get_boolean (value));
break;
case PROP_MID_SIDE_STEREO:
FLAC__stream_encoder_set_do_mid_side_stereo (this->encoder,
g_value_get_boolean (value));
break;
case PROP_LOOSE_MID_SIDE_STEREO:
FLAC__stream_encoder_set_loose_mid_side_stereo (this->encoder,
g_value_get_boolean (value));
break;
case PROP_BLOCKSIZE:
FLAC__stream_encoder_set_blocksize (this->encoder,
g_value_get_uint (value));
break;
case PROP_MAX_LPC_ORDER:
FLAC__stream_encoder_set_max_lpc_order (this->encoder,
g_value_get_uint (value));
break;
case PROP_QLP_COEFF_PRECISION:
FLAC__stream_encoder_set_qlp_coeff_precision (this->encoder,
g_value_get_uint (value));
break;
case PROP_QLP_COEFF_PREC_SEARCH:
FLAC__stream_encoder_set_do_qlp_coeff_prec_search (this->encoder,
g_value_get_boolean (value));
break;
case PROP_ESCAPE_CODING:
FLAC__stream_encoder_set_do_escape_coding (this->encoder,
g_value_get_boolean (value));
break;
case PROP_EXHAUSTIVE_MODEL_SEARCH:
FLAC__stream_encoder_set_do_exhaustive_model_search (this->encoder,
g_value_get_boolean (value));
break;
case PROP_MIN_RESIDUAL_PARTITION_ORDER:
FLAC__stream_encoder_set_min_residual_partition_order (this->encoder,
g_value_get_uint (value));
break;
case PROP_MAX_RESIDUAL_PARTITION_ORDER:
FLAC__stream_encoder_set_max_residual_partition_order (this->encoder,
g_value_get_uint (value));
break;
case PROP_RICE_PARAMETER_SEARCH_DIST:
FLAC__stream_encoder_set_rice_parameter_search_dist (this->encoder,
g_value_get_uint (value));
break;
case PROP_PADDING:
this->padding = g_value_get_uint (value);
break;
case PROP_SEEKPOINTS:
this->seekpoints = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (this);
}
static void
gst_flac_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstFlacEnc *this = GST_FLAC_ENC (object);
GST_OBJECT_LOCK (this);
switch (prop_id) {
case PROP_QUALITY:
g_value_set_enum (value, this->quality);
break;
case PROP_STREAMABLE_SUBSET:
g_value_set_boolean (value,
FLAC__stream_encoder_get_streamable_subset (this->encoder));
break;
case PROP_MID_SIDE_STEREO:
g_value_set_boolean (value,
FLAC__stream_encoder_get_do_mid_side_stereo (this->encoder));
break;
case PROP_LOOSE_MID_SIDE_STEREO:
g_value_set_boolean (value,
FLAC__stream_encoder_get_loose_mid_side_stereo (this->encoder));
break;
case PROP_BLOCKSIZE:
g_value_set_uint (value,
FLAC__stream_encoder_get_blocksize (this->encoder));
break;
case PROP_MAX_LPC_ORDER:
g_value_set_uint (value,
FLAC__stream_encoder_get_max_lpc_order (this->encoder));
break;
case PROP_QLP_COEFF_PRECISION:
g_value_set_uint (value,
FLAC__stream_encoder_get_qlp_coeff_precision (this->encoder));
break;
case PROP_QLP_COEFF_PREC_SEARCH:
g_value_set_boolean (value,
FLAC__stream_encoder_get_do_qlp_coeff_prec_search (this->encoder));
break;
case PROP_ESCAPE_CODING:
g_value_set_boolean (value,
FLAC__stream_encoder_get_do_escape_coding (this->encoder));
break;
case PROP_EXHAUSTIVE_MODEL_SEARCH:
g_value_set_boolean (value,
FLAC__stream_encoder_get_do_exhaustive_model_search (this->encoder));
break;
case PROP_MIN_RESIDUAL_PARTITION_ORDER:
g_value_set_uint (value,
FLAC__stream_encoder_get_min_residual_partition_order
(this->encoder));
break;
case PROP_MAX_RESIDUAL_PARTITION_ORDER:
g_value_set_uint (value,
FLAC__stream_encoder_get_max_residual_partition_order
(this->encoder));
break;
case PROP_RICE_PARAMETER_SEARCH_DIST:
g_value_set_uint (value,
FLAC__stream_encoder_get_rice_parameter_search_dist (this->encoder));
break;
case PROP_PADDING:
g_value_set_uint (value, this->padding);
break;
case PROP_SEEKPOINTS:
g_value_set_int (value, this->seekpoints);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (this);
}
static GstStateChangeReturn
gst_flac_enc_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstFlacEnc *flacenc = GST_FLAC_ENC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
case GST_STATE_CHANGE_READY_TO_PAUSED:
flacenc->stopped = FALSE;
flacenc->start_ts = GST_CLOCK_TIME_NONE;
flacenc->next_ts = GST_CLOCK_TIME_NONE;
flacenc->granulepos_offset = 0;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (FLAC__stream_encoder_get_state (flacenc->encoder) !=
FLAC__STREAM_ENCODER_UNINITIALIZED) {
flacenc->stopped = TRUE;
FLAC__stream_encoder_finish (flacenc->encoder);
}
flacenc->offset = 0;
flacenc->samples_written = 0;
flacenc->channels = 0;
flacenc->depth = 0;
flacenc->sample_rate = 0;
if (flacenc->meta) {
FLAC__metadata_object_delete (flacenc->meta[0]);
if (flacenc->meta[1])
FLAC__metadata_object_delete (flacenc->meta[1]);
if (flacenc->meta[2])
FLAC__metadata_object_delete (flacenc->meta[2]);
g_free (flacenc->meta);
flacenc->meta = NULL;
}
g_list_foreach (flacenc->headers, (GFunc) gst_mini_object_unref, NULL);
g_list_free (flacenc->headers);
flacenc->headers = NULL;
flacenc->got_headers = FALSE;
flacenc->last_flow = GST_FLOW_OK;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
default:
break;
}
return ret;
}
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