gstreamer/ext/flac/gstflacdec.c

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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-flacdec
* @seealso: flacenc
*
* <refsect2>
* <para>
* flacdec decodes FLAC streams.
* <ulink url="http://flac.sourceforge.net/">FLAC</ulink>
* is a Free Lossless Audio Codec.
* </para>
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch filesrc location=media/small/dark.441-16-s.flac ! flacdec ! audioconvert ! audioresample ! autoaudiosink
* </programlisting>
* </para>
* </refsect2>
*/
/*
* FIXME: this pipeline doesn't work, but we want to use it as example
* gst-launch gnomevfssrc location=http://gstreamer.freedesktop.org/media/small/dark.441-16-s.flac ! flacdec ! autoaudiosink
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstflacdec.h"
#include <gst/gsttagsetter.h>
#include <gst/tag/tag.h>
#include "flac_compat.h"
GST_DEBUG_CATEGORY_STATIC (flacdec_debug);
#define GST_CAT_DEFAULT flacdec_debug
static GstPadTemplate *src_template, *sink_template;
static GstElementDetails flacdec_details = {
"FLAC decoder",
"Codec/Decoder/Audio",
"Decodes FLAC lossless audio streams",
"Wim Taymans <wim.taymans@chello.be>",
};
static void gst_flac_dec_finalize (GObject * object);
static void gst_flac_dec_loop (GstPad * pad);
static GstStateChangeReturn gst_flac_dec_change_state (GstElement * element,
GstStateChange transition);
static const GstQueryType *gst_flac_dec_get_src_query_types (GstPad * pad);
static gboolean gst_flac_dec_src_query (GstPad * pad, GstQuery * query);
static gboolean gst_flac_dec_convert_src (GstPad * pad, GstFormat src_format,
gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
static gboolean gst_flac_dec_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_flac_dec_sink_activate (GstPad * sinkpad);
static gboolean gst_flac_dec_sink_activate_pull (GstPad * sinkpad,
gboolean active);
static void gst_flac_dec_send_newsegment (GstFlacDec * flacdec,
gboolean update);
static FLAC__SeekableStreamDecoderReadStatus
gst_flac_dec_read (const FLAC__SeekableStreamDecoder * decoder,
FLAC__byte buffer[], unsigned *bytes, void *client_data);
static FLAC__SeekableStreamDecoderSeekStatus
gst_flac_dec_seek (const FLAC__SeekableStreamDecoder * decoder,
FLAC__uint64 position, void *client_data);
static FLAC__SeekableStreamDecoderTellStatus
gst_flac_dec_tell (const FLAC__SeekableStreamDecoder * decoder,
FLAC__uint64 * position, void *client_data);
static FLAC__SeekableStreamDecoderLengthStatus
gst_flac_dec_length (const FLAC__SeekableStreamDecoder * decoder,
FLAC__uint64 * length, void *client_data);
static FLAC__bool gst_flac_dec_eof (const FLAC__SeekableStreamDecoder * decoder,
void *client_data);
static FLAC__StreamDecoderWriteStatus
gst_flac_dec_write (const FLAC__SeekableStreamDecoder * decoder,
const FLAC__Frame * frame,
const FLAC__int32 * const buffer[], void *client_data);
static void gst_flac_dec_metadata_callback (const FLAC__SeekableStreamDecoder *
decoder, const FLAC__StreamMetadata * metadata, void *client_data);
static void gst_flac_dec_error_callback (const FLAC__SeekableStreamDecoder *
decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
GST_BOILERPLATE (GstFlacDec, gst_flac_dec, GstElement, GST_TYPE_ELEMENT)
#define GST_FLAC_DEC_SRC_CAPS \
"audio/x-raw-int, " \
"endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", " \
"signed = (boolean) true, " \
"width = (int) { 8, 16, 32 }, " \
"depth = (int) { 8, 12, 16, 20, 24, 32 }, " \
"rate = (int) [ 8000, 96000 ], " \
"channels = (int) [ 1, 8 ]"
static void gst_flac_dec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstCaps *raw_caps, *flac_caps;
raw_caps = gst_caps_from_string (GST_FLAC_DEC_SRC_CAPS);
flac_caps = gst_caps_new_simple ("audio/x-flac", NULL);
sink_template = gst_pad_template_new ("sink", GST_PAD_SINK,
GST_PAD_ALWAYS, flac_caps);
src_template = gst_pad_template_new ("src", GST_PAD_SRC,
GST_PAD_ALWAYS, raw_caps);
gst_element_class_add_pad_template (element_class, sink_template);
gst_element_class_add_pad_template (element_class, src_template);
gst_element_class_set_details (element_class, &flacdec_details);
GST_DEBUG_CATEGORY_INIT (flacdec_debug, "flacdec", 0, "flac decoder");
}
static void
gst_flac_dec_class_init (GstFlacDecClass * klass)
{
GstElementClass *gstelement_class;
GObjectClass *gobject_class;
gstelement_class = (GstElementClass *) klass;
gobject_class = (GObjectClass *) klass;
gobject_class->finalize = gst_flac_dec_finalize;
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_flac_dec_change_state);
}
static void
gst_flac_dec_init (GstFlacDec * flacdec, GstFlacDecClass * klass)
{
flacdec->sinkpad = gst_pad_new_from_template (sink_template, "sink");
gst_pad_set_activate_function (flacdec->sinkpad,
GST_DEBUG_FUNCPTR (gst_flac_dec_sink_activate));
gst_pad_set_activatepull_function (flacdec->sinkpad,
GST_DEBUG_FUNCPTR (gst_flac_dec_sink_activate_pull));
gst_element_add_pad (GST_ELEMENT (flacdec), flacdec->sinkpad);
flacdec->srcpad = gst_pad_new_from_template (src_template, "src");
gst_pad_set_query_type_function (flacdec->srcpad,
GST_DEBUG_FUNCPTR (gst_flac_dec_get_src_query_types));
gst_pad_set_query_function (flacdec->srcpad,
GST_DEBUG_FUNCPTR (gst_flac_dec_src_query));
gst_pad_set_event_function (flacdec->srcpad,
GST_DEBUG_FUNCPTR (gst_flac_dec_src_event));
gst_pad_use_fixed_caps (flacdec->srcpad);
gst_element_add_pad (GST_ELEMENT (flacdec), flacdec->srcpad);
flacdec->decoder = FLAC__seekable_stream_decoder_new ();
flacdec->segment.last_stop = 0;
flacdec->init = TRUE;
FLAC__seekable_stream_decoder_set_read_callback (flacdec->decoder,
gst_flac_dec_read);
FLAC__seekable_stream_decoder_set_seek_callback (flacdec->decoder,
gst_flac_dec_seek);
FLAC__seekable_stream_decoder_set_tell_callback (flacdec->decoder,
gst_flac_dec_tell);
FLAC__seekable_stream_decoder_set_length_callback (flacdec->decoder,
gst_flac_dec_length);
FLAC__seekable_stream_decoder_set_eof_callback (flacdec->decoder,
gst_flac_dec_eof);
#if FLAC_VERSION >= 0x010003
FLAC__seekable_stream_decoder_set_write_callback (flacdec->decoder,
gst_flac_dec_write);
#else
FLAC__seekable_stream_decoder_set_write_callback (flacdec->decoder,
(FLAC__StreamDecoderWriteStatus (*)
(const FLAC__SeekableStreamDecoder * decoder,
const FLAC__Frame * frame,
const FLAC__int32 * buffer[], void *client_data))
(gst_flac_dec_write));
#endif
FLAC__seekable_stream_decoder_set_metadata_respond (flacdec->decoder,
FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__seekable_stream_decoder_set_metadata_callback (flacdec->decoder,
gst_flac_dec_metadata_callback);
FLAC__seekable_stream_decoder_set_error_callback (flacdec->decoder,
gst_flac_dec_error_callback);
FLAC__seekable_stream_decoder_set_client_data (flacdec->decoder, flacdec);
}
static void
gst_flac_dec_finalize (GObject * object)
{
GstFlacDec *flacdec;
flacdec = GST_FLAC_DEC (object);
if (flacdec->decoder)
FLAC__seekable_stream_decoder_delete (flacdec->decoder);
flacdec->decoder = NULL;
Fixes a bunch of problems with finalize and dispose functions, either assumptions that dispose is only called once, o... Original commit message from CVS: * ext/alsa/gstalsa.c: (gst_alsa_class_init), (gst_alsa_dispose), (gst_alsa_finalize): * ext/cdaudio/gstcdaudio.c: (gst_cdaudio_class_init), (gst_cdaudio_finalize): * ext/cdparanoia/gstcdparanoia.c: (cdparanoia_class_init), (cdparanoia_finalize): * ext/divx/gstdivxdec.c: (gst_divxdec_dispose): * ext/divx/gstdivxenc.c: (gst_divxenc_dispose): * ext/dvdread/dvdreadsrc.c: (dvdreadsrc_class_init), (dvdreadsrc_finalize): * ext/flac/gstflacdec.c: (gst_flacdec_class_init), (gst_flacdec_finalize): * ext/flac/gstflacenc.c: (gst_flacenc_class_init), (gst_flacenc_finalize): * ext/gnomevfs/gstgnomevfssink.c: (gst_gnomevfssink_class_init), (gst_gnomevfssink_finalize): * ext/gnomevfs/gstgnomevfssrc.c: (gst_gnomevfssrc_class_init), (gst_gnomevfssrc_finalize): * ext/libfame/gstlibfame.c: (gst_fameenc_class_init), (gst_fameenc_finalize): * ext/nas/nassink.c: (gst_nassink_class_init), (gst_nassink_finalize): * ext/sdl/sdlvideosink.c: (gst_sdlvideosink_finalize), (gst_sdlvideosink_class_init): * ext/sndfile/gstsf.c: (gst_sf_dispose): * gst-libs/gst/mixer/mixertrack.c: (gst_mixer_track_dispose): * gst-libs/gst/tuner/tunerchannel.c: (gst_tuner_channel_dispose): * gst-libs/gst/tuner/tunernorm.c: (gst_tuner_norm_dispose): * gst-libs/gst/xwindowlistener/xwindowlistener.c: (gst_x_window_listener_dispose): * gst/audioscale/gstaudioscale.c: * gst/playondemand/gstplayondemand.c: (play_on_demand_class_init), (play_on_demand_finalize): * gst/videofilter/gstvideobalance.c: (gst_videobalance_dispose): * gst/videoscale/gstvideoscale.c: (gst_videoscale_chain): * sys/cdrom/gstcdplayer.c: (cdplayer_class_init), (cdplayer_finalize): * sys/glsink/glimagesink.c: (gst_glimagesink_finalize), (gst_glimagesink_class_init): * sys/oss/gstosselement.c: (gst_osselement_class_init), (gst_osselement_finalize): * sys/oss/gstosssink.c: (gst_osssink_dispose): * sys/oss/gstosssrc.c: (gst_osssrc_dispose): * sys/v4l/gstv4lelement.c: (gst_v4lelement_dispose): Fixes a bunch of problems with finalize and dispose functions, either assumptions that dispose is only called once, or not calling the parent class dispose/finalize function
2004-11-01 14:43:38 +00:00
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_flac_dec_update_metadata (GstFlacDec * flacdec,
const FLAC__StreamMetadata * metadata)
{
GstTagList *list;
guint32 number_of_comments, cursor, str_len;
gchar *p_value, *value, *name, *str_ptr;
list = gst_tag_list_new ();
if (list == NULL) {
return FALSE;
}
number_of_comments = metadata->data.vorbis_comment.num_comments;
value = NULL;
GST_DEBUG ("%d tag(s) found", number_of_comments);
for (cursor = 0; cursor < number_of_comments; cursor++) {
str_ptr = (gchar *) metadata->data.vorbis_comment.comments[cursor].entry;
str_len = metadata->data.vorbis_comment.comments[cursor].length;
p_value = g_strstr_len (str_ptr, str_len, "=");
if (p_value) {
name = g_strndup (str_ptr, p_value - str_ptr);
value = g_strndup (p_value + 1, str_ptr + str_len - p_value - 1);
GST_DEBUG ("%s : %s", name, value);
gst_vorbis_tag_add (list, name, value);
g_free (name);
g_free (value);
}
}
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, "FLAC", NULL);
gst_element_found_tags_for_pad (GST_ELEMENT (flacdec), flacdec->srcpad, list);
return TRUE;
}
static void
gst_flac_dec_metadata_callback (const FLAC__SeekableStreamDecoder * decoder,
const FLAC__StreamMetadata * metadata, void *client_data)
{
GstFlacDec *flacdec;
flacdec = GST_FLAC_DEC (client_data);
switch (metadata->type) {
case FLAC__METADATA_TYPE_STREAMINFO:
gst_segment_set_duration (&flacdec->segment, GST_FORMAT_DEFAULT,
metadata->data.stream_info.total_samples);
if (flacdec->segment.stop == -1)
flacdec->segment.stop = metadata->data.stream_info.total_samples;
break;
case FLAC__METADATA_TYPE_VORBIS_COMMENT:
gst_flac_dec_update_metadata (flacdec, metadata);
break;
default:
break;
}
}
static void
gst_flac_dec_error_callback (const FLAC__SeekableStreamDecoder * decoder,
FLAC__StreamDecoderErrorStatus status, void *client_data)
{
GstFlacDec *flacdec;
gchar *error;
flacdec = GST_FLAC_DEC (client_data);
switch (status) {
case FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC:
error = "lost sync";
break;
case FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER:
error = "bad header";
break;
case FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH:
error = "CRC mismatch";
break;
default:
error = "unknown error";
break;
}
GST_ELEMENT_ERROR (flacdec, STREAM, DECODE, (NULL), (error));
flacdec->last_flow = GST_FLOW_ERROR;
}
static FLAC__SeekableStreamDecoderSeekStatus
gst_flac_dec_seek (const FLAC__SeekableStreamDecoder * decoder,
FLAC__uint64 position, void *client_data)
{
GstFlacDec *flacdec;
flacdec = GST_FLAC_DEC (client_data);
GST_DEBUG ("seek %" G_GINT64_FORMAT, position);
flacdec->offset = position;
return FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK;
}
static FLAC__SeekableStreamDecoderTellStatus
gst_flac_dec_tell (const FLAC__SeekableStreamDecoder * decoder,
FLAC__uint64 * position, void *client_data)
{
GstFlacDec *flacdec;
flacdec = GST_FLAC_DEC (client_data);
*position = flacdec->offset;
GST_DEBUG ("tell %" G_GINT64_FORMAT, *position);
return FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK;
}
static FLAC__SeekableStreamDecoderLengthStatus
gst_flac_dec_length (const FLAC__SeekableStreamDecoder * decoder,
FLAC__uint64 * length, void *client_data)
{
GstFlacDec *flacdec;
GstFormat fmt = GST_FORMAT_BYTES;
gint64 len;
GstPad *peer;
flacdec = GST_FLAC_DEC (client_data);
if (!(peer = gst_pad_get_peer (flacdec->sinkpad)))
return FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_ERROR;
gst_pad_query_duration (peer, &fmt, &len);
gst_object_unref (peer);
if (fmt != GST_FORMAT_BYTES || len == -1)
return FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_ERROR;
*length = len;
GST_DEBUG ("length %" G_GINT64_FORMAT, *length);
return FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK;
}
static FLAC__bool
gst_flac_dec_eof (const FLAC__SeekableStreamDecoder * decoder,
void *client_data)
{
GstFlacDec *flacdec;
GstFormat fmt;
GstPad *peer;
gboolean ret = FALSE;
gint64 len;
flacdec = GST_FLAC_DEC (client_data);
if (!(peer = gst_pad_get_peer (flacdec->sinkpad))) {
GST_WARNING_OBJECT (flacdec, "no peer pad, returning EOF");
return TRUE;
}
fmt = GST_FORMAT_BYTES;
if (gst_pad_query_duration (peer, &fmt, &len) && fmt == GST_FORMAT_BYTES &&
len != -1 && flacdec->offset >= len) {
GST_DEBUG ("offset=%" G_GINT64_FORMAT ", len=%" G_GINT64_FORMAT
", returning EOF", flacdec->offset, len);
ret = TRUE;
}
gst_object_unref (peer);
return ret;
}
static FLAC__SeekableStreamDecoderReadStatus
gst_flac_dec_read (const FLAC__SeekableStreamDecoder * decoder,
FLAC__byte buffer[], unsigned *bytes, void *client_data)
{
GstFlacDec *flacdec;
GstBuffer *buf;
flacdec = GST_FLAC_DEC (client_data);
if (gst_pad_pull_range (flacdec->sinkpad, flacdec->offset, *bytes,
&buf) != GST_FLOW_OK)
return FLAC__SEEKABLE_STREAM_DECODER_READ_ERROR;
GST_DEBUG ("Read %d bytes at %" G_GUINT64_FORMAT,
GST_BUFFER_SIZE (buf), flacdec->offset);
memcpy (buffer, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
*bytes = GST_BUFFER_SIZE (buf);
gst_buffer_unref (buf);
flacdec->offset += *bytes;
return FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK;
}
static FLAC__StreamDecoderWriteStatus
gst_flac_dec_write (const FLAC__SeekableStreamDecoder * decoder,
const FLAC__Frame * frame,
const FLAC__int32 * const buffer[], void *client_data)
{
GstFlowReturn ret = GST_FLOW_OK;
GstFlacDec *flacdec;
GstBuffer *outbuf;
guint depth = frame->header.bits_per_sample;
guint width;
guint channels = frame->header.channels;
guint samples = frame->header.blocksize;
guint j, i;
flacdec = GST_FLAC_DEC (client_data);
switch (depth) {
case 8:
width = 8;
break;
case 12:
case 16:
width = 16;
break;
case 20:
case 24:
case 32:
width = 32;
break;
default:
g_assert_not_reached ();
}
if (!GST_PAD_CAPS (flacdec->srcpad)) {
GstCaps *caps;
GST_DEBUG ("Negotiating %d Hz @ %d channels",
frame->header.sample_rate, channels);
caps = gst_caps_new_simple ("audio/x-raw-int",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"signed", G_TYPE_BOOLEAN, TRUE,
"width", G_TYPE_INT, width,
"depth", G_TYPE_INT, depth,
"rate", G_TYPE_INT, frame->header.sample_rate,
"channels", G_TYPE_INT, channels, NULL);
if (!gst_pad_set_caps (flacdec->srcpad, caps)) {
GST_ELEMENT_ERROR (flacdec, CORE, NEGOTIATION, (NULL),
("Failed to negotiate caps %" GST_PTR_FORMAT, caps));
flacdec->last_flow = GST_FLOW_ERROR;
gst_caps_unref (caps);
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
}
gst_caps_unref (caps);
flacdec->depth = depth;
flacdec->width = width;
flacdec->channels = channels;
flacdec->sample_rate = frame->header.sample_rate;
}
if (flacdec->need_newsegment) {
gst_flac_dec_send_newsegment (flacdec, FALSE);
flacdec->need_newsegment = FALSE;
}
g_assert (width % 8 == 0); /* width must be a multiple of 8 */
ret = gst_pad_alloc_buffer_and_set_caps (flacdec->srcpad,
flacdec->segment.last_stop, samples * channels * (width / 8),
GST_PAD_CAPS (flacdec->srcpad), &outbuf);
if (ret != GST_FLOW_OK) {
GST_DEBUG ("gst_pad_alloc_buffer() returned %s", gst_flow_get_name (ret));
goto done;
}
GST_BUFFER_TIMESTAMP (outbuf) =
gst_util_uint64_scale_int (flacdec->segment.last_stop, GST_SECOND,
frame->header.sample_rate);
GST_BUFFER_DURATION (outbuf) =
gst_util_uint64_scale_int (samples, GST_SECOND,
frame->header.sample_rate);
if (depth == 8) {
gint8 *outbuffer = (gint8 *) GST_BUFFER_DATA (outbuf);
for (i = 0; i < samples; i++) {
for (j = 0; j < channels; j++) {
*outbuffer++ = (gint8) buffer[j][i];
}
}
} else if (depth == 12 || depth == 16) {
gint16 *outbuffer = (gint16 *) GST_BUFFER_DATA (outbuf);
for (i = 0; i < samples; i++) {
for (j = 0; j < channels; j++) {
*outbuffer++ = (gint16) buffer[j][i];
}
}
} else if (depth == 20 || depth == 24 || depth == 32) {
gint32 *outbuffer = (gint32 *) GST_BUFFER_DATA (outbuf);
for (i = 0; i < samples; i++) {
for (j = 0; j < channels; j++) {
*outbuffer++ = (gint32) buffer[j][i];
}
}
} else {
g_assert_not_reached ();
}
if (!flacdec->seeking) {
GST_DEBUG ("pushing %d samples at offset %" G_GINT64_FORMAT
"(%" GST_TIME_FORMAT " + %" GST_TIME_FORMAT ")",
samples, GST_BUFFER_OFFSET (outbuf),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf)));
ret = gst_pad_push (flacdec->srcpad, outbuf);
} else {
GST_DEBUG ("not pushing %d samples at offset %" G_GINT64_FORMAT
" (in seek)", samples, GST_BUFFER_OFFSET (outbuf));
gst_buffer_unref (outbuf);
ret = GST_FLOW_OK;
}
if (ret != GST_FLOW_OK) {
GST_DEBUG ("gst_pad_push() returned %s", gst_flow_get_name (ret));
}
done:
flacdec->segment.last_stop += samples;
/* we act on the flow return value later in the loop function, as we don't
* want to mess up the internal decoder state by returning ABORT when the
* error is in fact non-fatal (like a pad in flushing mode) and we want
* to continue later. So just pretend everything's dandy and act later. */
flacdec->last_flow = ret;
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
static void
gst_flac_dec_loop (GstPad * sinkpad)
{
GstFlacDec *flacdec;
FLAC__SeekableStreamDecoderState s;
flacdec = GST_FLAC_DEC (GST_OBJECT_PARENT (sinkpad));
GST_DEBUG_OBJECT (flacdec, "entering loop");
if (flacdec->init) {
GST_DEBUG_OBJECT (flacdec, "initializing decoder");
s = FLAC__seekable_stream_decoder_init (flacdec->decoder);
if (s != FLAC__SEEKABLE_STREAM_DECODER_OK)
goto analyze_state;
/* FLAC__seekable_stream_decoder_process_metadata (flacdec->decoder); */
flacdec->init = FALSE;
}
flacdec->last_flow = GST_FLOW_OK;
GST_DEBUG_OBJECT (flacdec, "processing single");
FLAC__seekable_stream_decoder_process_single (flacdec->decoder);
analyze_state:
GST_DEBUG_OBJECT (flacdec, "done processing, checking encoder state");
s = FLAC__seekable_stream_decoder_get_state (flacdec->decoder);
switch (s) {
case FLAC__SEEKABLE_STREAM_DECODER_OK:
case FLAC__SEEKABLE_STREAM_DECODER_SEEKING:{
GST_DEBUG_OBJECT (flacdec, "everything ok");
if (flacdec->last_flow != GST_FLOW_OK &&
flacdec->last_flow != GST_FLOW_NOT_LINKED) {
GST_DEBUG_OBJECT (flacdec, "last_flow return was %s, pausing",
gst_flow_get_name (flacdec->last_flow));
gst_pad_pause_task (sinkpad);
}
/* FIXME: support segment seeks
if (((flacdec->segment.flags & GST_SEEK_FLAG_SEGMENT) != 0) &&
flacdec->segment.last_stop > 0 && flacdec->segment.stop != -1 &&
flacdec->segment.last_stop >= flacdec->segment.stop) {
GST_DEBUG_OBJECT (flacdec, "reached the end of the configured"
" segment, posting SEGMENT_DONE message and pausing");
gst_pad_pause_task (sinkpad);
gst_element_post_message (GST_ELEMENT (flacdec),
gst_message_new_segment_done (GST_OBJECT (flacdec),
GST_FORMAT_DEFAULT, flacdec->segment.stop));
}
*/
return;
}
case FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM:{
GST_DEBUG_OBJECT (flacdec, "EOS, pushing downstream");
FLAC__seekable_stream_decoder_reset (flacdec->decoder);
gst_pad_push_event (flacdec->srcpad, gst_event_new_eos ());
GST_DEBUG_OBJECT (flacdec, "pausing");
gst_pad_pause_task (sinkpad);
return;
}
case FLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
case FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR:
case FLAC__SEEKABLE_STREAM_DECODER_READ_ERROR:
case FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR:
case FLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED:
case FLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK:
case FLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED:
default:{
/* fixme: this error sucks -- should try to figure out when/if an more
specific error was already sent via the callback */
GST_ELEMENT_ERROR (flacdec, STREAM, DECODE, (NULL),
("%s", FLAC__SeekableStreamDecoderStateString[s]));
gst_pad_push_event (flacdec->srcpad, gst_event_new_eos ());
GST_DEBUG_OBJECT (flacdec, "pausing");
gst_pad_pause_task (sinkpad);
return;
}
}
}
static gboolean
gst_flac_dec_convert_src (GstPad * pad, GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
{
GstFlacDec *flacdec = GST_FLAC_DEC (GST_PAD_PARENT (pad));
gboolean res = TRUE;
guint bytes_per_sample;
guint scale = 1;
g_assert (flacdec->width > 0);
g_assert (flacdec->width % 8 == 0);
g_assert (flacdec->channels > 0);
bytes_per_sample = flacdec->channels * (flacdec->width / 8);
switch (src_format) {
case GST_FORMAT_BYTES:{
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
if (bytes_per_sample == 0)
return FALSE;
*dest_value =
gst_util_uint64_scale_int (src_value, 1, bytes_per_sample);
break;
case GST_FORMAT_TIME:
{
gint byterate = bytes_per_sample * flacdec->sample_rate;
if (byterate == 0)
return FALSE;
*dest_value = gst_util_uint64_scale_int (src_value, GST_SECOND,
byterate);
break;
}
default:
res = FALSE;
}
break;
}
case GST_FORMAT_DEFAULT:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value * bytes_per_sample;
break;
case GST_FORMAT_TIME:
if (flacdec->sample_rate == 0)
return FALSE;
*dest_value = gst_util_uint64_scale_int (src_value, GST_SECOND,
flacdec->sample_rate);
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
scale = bytes_per_sample;
case GST_FORMAT_DEFAULT:
*dest_value = gst_util_uint64_scale_int (src_value,
scale * flacdec->sample_rate, GST_SECOND);
break;
default:
res = FALSE;
}
break;
default:
res = FALSE;
}
return res;
}
static const GstQueryType *
gst_flac_dec_get_src_query_types (GstPad * pad)
{
static const GstQueryType types[] = {
GST_QUERY_POSITION,
GST_QUERY_DURATION,
0,
};
return types;
}
static gboolean
gst_flac_dec_src_query (GstPad * pad, GstQuery * query)
{
GstFlacDec *flacdec;
gboolean res = TRUE;
GstPad *peer;
flacdec = GST_FLAC_DEC (gst_pad_get_parent (pad));
peer = gst_pad_get_peer (flacdec->sinkpad);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:{
GstFormat fmt;
gint64 pos;
gst_query_parse_position (query, &fmt, NULL);
if (fmt != GST_FORMAT_DEFAULT) {
if (!gst_flac_dec_convert_src (flacdec->srcpad, GST_FORMAT_DEFAULT,
flacdec->segment.last_stop, &fmt, &pos)) {
GST_DEBUG ("failed to convert position into format %d", fmt);
res = FALSE;
goto done;
}
} else {
pos = flacdec->segment.last_stop;
}
gst_query_set_position (query, fmt, pos);
GST_DEBUG_OBJECT (flacdec, "returning position %" G_GUINT64_FORMAT
" (format: %s)", pos, gst_format_get_name (fmt));
res = TRUE;
break;
}
case GST_QUERY_DURATION:{
GstFormat fmt;
gint64 len;
gst_query_parse_duration (query, &fmt, NULL);
/* try any demuxers before us first */
if (fmt == GST_FORMAT_TIME && peer && gst_pad_query (peer, query)) {
gst_query_parse_duration (query, NULL, &len);
GST_DEBUG_OBJECT (flacdec, "peer returned duration %" GST_TIME_FORMAT,
len);
res = TRUE;
goto done;
}
if (flacdec->segment.duration == 0 || flacdec->segment.duration == -1) {
GST_DEBUG_OBJECT (flacdec, "duration not known yet");
res = FALSE;
goto done;
}
/* convert total number of samples to request format */
if (fmt != GST_FORMAT_DEFAULT) {
if (!gst_flac_dec_convert_src (flacdec->srcpad, GST_FORMAT_DEFAULT,
flacdec->segment.duration, &fmt, &len)) {
GST_DEBUG ("failed to convert duration into format %d", fmt);
res = FALSE;
goto done;
}
} else {
len = flacdec->segment.duration;
}
gst_query_set_duration (query, fmt, len);
GST_DEBUG_OBJECT (flacdec, "returning duration %" G_GUINT64_FORMAT
" (format: %s)", len, gst_format_get_name (fmt));
res = TRUE;
break;
}
case GST_QUERY_CONVERT:{
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
res = gst_flac_dec_convert_src (pad, src_fmt, src_val, &dest_fmt,
&dest_val);
if (res) {
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
}
break;
}
default:{
res = FALSE;
break;
}
}
done:
if (peer)
gst_object_unref (peer);
gst_object_unref (flacdec);
return res;
}
static void
gst_flac_dec_send_newsegment (GstFlacDec * flacdec, gboolean update)
{
GstSegment *s = &flacdec->segment;
GstFormat target_format = GST_FORMAT_TIME;
gint64 stop_time = GST_CLOCK_TIME_NONE;
gint64 start_time = 0;
/* segment is in DEFAULT format, but we want to send a TIME newsegment */
if (!gst_flac_dec_convert_src (flacdec->srcpad, GST_FORMAT_DEFAULT,
s->start, &target_format, &start_time)) {
GST_WARNING_OBJECT (flacdec, "failed to convert segment start %lld to TIME",
s->start);
return;
}
if (s->stop != -1 && !gst_flac_dec_convert_src (flacdec->srcpad,
GST_FORMAT_DEFAULT, s->stop, &target_format, &stop_time)) {
GST_WARNING_OBJECT (flacdec, "failed to convert segment stop to TIME");
return;
}
GST_DEBUG_OBJECT (flacdec, "sending newsegment from %" GST_TIME_FORMAT
" to %" GST_TIME_FORMAT, GST_TIME_ARGS (start_time),
GST_TIME_ARGS (stop_time));
gst_pad_push_event (flacdec->srcpad,
gst_event_new_new_segment (update, s->rate, GST_FORMAT_TIME,
start_time, stop_time, start_time));
}
static gboolean
gst_flac_dec_handle_seek_event (GstFlacDec * flacdec, GstEvent * event)
{
FLAC__bool seek_ok;
GstSeekFlags seek_flags;
GstSeekType start_type;
GstSeekType stop_type;
GstSegment segment;
GstFormat seek_format;
gboolean only_update = FALSE;
gboolean flush;
gdouble rate;
gint64 start;
gint64 stop;
gst_event_parse_seek (event, &rate, &seek_format, &seek_flags, &start_type,
&start, &stop_type, &stop);
if (seek_format != GST_FORMAT_DEFAULT && seek_format != GST_FORMAT_TIME) {
GST_DEBUG ("seeking is only supported in TIME or DEFAULT format");
return FALSE;
}
if (rate < 0.0) {
GST_DEBUG ("only forward playback supported, rate %f not allowed", rate);
return FALSE;
}
if (seek_format != GST_FORMAT_DEFAULT) {
GstFormat target_format = GST_FORMAT_DEFAULT;
if (start_type != GST_SEEK_TYPE_NONE &&
!gst_flac_dec_convert_src (flacdec->srcpad, seek_format, start,
&target_format, &start)) {
GST_DEBUG ("failed to convert start to DEFAULT format");
return FALSE;
}
if (stop_type != GST_SEEK_TYPE_NONE &&
!gst_flac_dec_convert_src (flacdec->srcpad, seek_format, stop,
&target_format, &stop)) {
GST_DEBUG ("failed to convert stop to DEFAULT format");
return FALSE;
}
}
flush = ((seek_flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
GST_OBJECT_LOCK (flacdec);
/* operate on segment copy until we know the seek worked */
segment = flacdec->segment;
gst_segment_set_seek (&segment, rate, GST_FORMAT_DEFAULT,
seek_flags, start_type, start, stop_type, stop, &only_update);
if (flush) {
gst_pad_push_event (flacdec->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_stop_task (flacdec->sinkpad);
}
GST_PAD_STREAM_LOCK (flacdec->sinkpad);
#if 0
if (only_update) {
flacdec->segment = segment;
gst_flac_dec_send_newsegment (flacdec, TRUE);
goto done;
}
#endif
GST_DEBUG ("configured segment: [%" G_GINT64_FORMAT "-%" G_GINT64_FORMAT
"] = [%" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "]",
segment.start, segment.stop,
GST_TIME_ARGS (segment.start * GST_SECOND / flacdec->sample_rate),
GST_TIME_ARGS (segment.stop * GST_SECOND / flacdec->sample_rate));
GST_DEBUG_OBJECT (flacdec, "performing seek to sample %" G_GINT64_FORMAT,
segment.start);
flacdec->seeking = TRUE;
seek_ok = FLAC__seekable_stream_decoder_seek_absolute (flacdec->decoder,
segment.start);
flacdec->seeking = FALSE;
gst_pad_push_event (flacdec->srcpad, gst_event_new_flush_stop ());
if (seek_ok) {
flacdec->segment = segment;
gst_flac_dec_send_newsegment (flacdec, FALSE);
flacdec->segment.last_stop = segment.start;
/* FIXME: support segment seeks
if ((seek_flags & GST_SEEK_FLAG_SEGMENT) != 0) {
GST_DEBUG_OBJECT (flacdec, "posting SEGMENT_START message");
GST_OBJECT_UNLOCK (flacdec);
gst_element_post_message (GST_ELEMENT (flacdec),
gst_message_new_segment_start (GST_OBJECT (flacdec),
GST_FORMAT_DEFAULT, flacdec->segment.start));
GST_OBJECT_LOCK (flacdec);
}
*/
GST_DEBUG_OBJECT (flacdec, "seek successful");
} else {
GST_WARNING_OBJECT (flacdec, "seek failed");
}
#if 0
done:
#endif
GST_PAD_STREAM_UNLOCK (flacdec->sinkpad);
gst_pad_start_task (flacdec->sinkpad,
(GstTaskFunction) gst_flac_dec_loop, flacdec->sinkpad);
GST_OBJECT_UNLOCK (flacdec);
return TRUE;
}
static gboolean
gst_flac_dec_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
GstFlacDec *flacdec = GST_FLAC_DEC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:{
/* first, see if we're before a demuxer that
* might handle the seek for us */
gst_event_ref (event);
res = gst_pad_event_default (pad, event);
/* if not, try to handle it ourselves */
if (!res) {
res = gst_flac_dec_handle_seek_event (flacdec, event);
}
gst_event_unref (event);
break;
}
default:
res = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (flacdec);
return res;
}
static gboolean
gst_flac_dec_sink_activate (GstPad * sinkpad)
{
if (gst_pad_check_pull_range (sinkpad))
return gst_pad_activate_pull (sinkpad, TRUE);
return FALSE;
}
static gboolean
gst_flac_dec_sink_activate_pull (GstPad * sinkpad, gboolean active)
{
if (active) {
/* if we have a scheduler we can start the task */
GST_FLAC_DEC (GST_OBJECT_PARENT (sinkpad))->offset = 0;
return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_flac_dec_loop,
sinkpad);
} else {
return gst_pad_stop_task (sinkpad);
}
}
static GstStateChangeReturn
gst_flac_dec_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstFlacDec *flacdec = GST_FLAC_DEC (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
flacdec->segment.last_stop = 0;
flacdec->need_newsegment = TRUE;
flacdec->seeking = FALSE;
if (flacdec->init == FALSE) {
FLAC__seekable_stream_decoder_reset (flacdec->decoder);
}
gst_segment_init (&flacdec->segment, GST_FORMAT_DEFAULT);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_segment_init (&flacdec->segment, GST_FORMAT_UNDEFINED);
break;
default:
break;
}
return ret;
}