mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-10-05 02:02:26 +00:00
Code Issues 1 Projects Releases Wiki Activity

flacdec: use a single decoder field for both push and pull mode

Browse source
This commit is contained in:
Mark Nauwelaerts 2009-12-23 17:50:34 +01:00
parent d6633d6edc
commit 636738d9f2
2 changed files with 38 additions and 64 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

93
ext/flac/gstflacdec.c
View file

@ -39,8 +39,6 @@
*/
/* TODO: add seeking when operating chain-based with unframed input */
/* FIXME: merge dec->seekable_decoder and dec->stream_decoder now that they're
* the same type */
#ifdef HAVE_CONFIG_H
#include "config.h"
@ -120,8 +118,8 @@ static gboolean gst_flac_dec_sink_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_flac_dec_chain (GstPad * pad, GstBuffer * buf);
static void gst_flac_dec_reset_decoders (GstFlacDec * flacdec);
static void gst_flac_dec_setup_seekable_decoder (GstFlacDec * flacdec);
static void gst_flac_dec_setup_stream_decoder (GstFlacDec * flacdec);
static void gst_flac_dec_setup_decoder (GstFlacDec * flacdec);
static void gst_flac_dec_setup_decoder (GstFlacDec * flacdec);
static FLAC__StreamDecoderReadStatus
gst_flac_dec_read_seekable (const FLAC__StreamDecoder * decoder,
@ -244,15 +242,10 @@ gst_flac_dec_init (GstFlacDec * flacdec, GstFlacDecClass * klass)
static void
gst_flac_dec_reset_decoders (GstFlacDec * flacdec)
{
if (flacdec->seekable_decoder) {
FLAC__stream_decoder_delete (flacdec->seekable_decoder);
flacdec->seekable_decoder = NULL;
}
/* Clean up the stream_decoder */
if (flacdec->stream_decoder) {
FLAC__stream_decoder_delete (flacdec->stream_decoder);
flacdec->stream_decoder = NULL;
/* Clean up the decoder */
if (flacdec->decoder) {
FLAC__stream_decoder_delete (flacdec->decoder);
flacdec->decoder = NULL;
}
if (flacdec->adapter) {
@ -284,24 +277,7 @@ gst_flac_dec_reset_decoders (GstFlacDec * flacdec)
}
static void
gst_flac_dec_setup_seekable_decoder (GstFlacDec * dec)
{
gst_flac_dec_reset_decoders (dec);
dec->tags = gst_tag_list_new ();
gst_tag_list_add (dec->tags, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, "FLAC", NULL);
dec->seekable_decoder = FLAC__stream_decoder_new ();
FLAC__stream_decoder_set_metadata_respond (dec->seekable_decoder,
FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__stream_decoder_set_metadata_respond (dec->seekable_decoder,
FLAC__METADATA_TYPE_PICTURE);
FLAC__stream_decoder_set_md5_checking (dec->seekable_decoder, false); /* no point calculating since it's never checked here */
}
static void
gst_flac_dec_setup_stream_decoder (GstFlacDec * dec)
gst_flac_dec_setup_decoder (GstFlacDec * dec)
{
gst_flac_dec_reset_decoders (dec);
@ -311,12 +287,13 @@ gst_flac_dec_setup_stream_decoder (GstFlacDec * dec)
dec->adapter = gst_adapter_new ();
dec->stream_decoder = FLAC__stream_decoder_new ();
dec->decoder = FLAC__stream_decoder_new ();
FLAC__stream_decoder_set_md5_checking (dec->stream_decoder, false); /* no point calculating since it's never checked here */
FLAC__stream_decoder_set_metadata_respond (dec->stream_decoder,
/* no point calculating since it's never checked here */
FLAC__stream_decoder_set_md5_checking (dec->decoder, false);
FLAC__stream_decoder_set_metadata_respond (dec->decoder,
FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__stream_decoder_set_metadata_respond (dec->stream_decoder,
FLAC__stream_decoder_set_metadata_respond (dec->decoder,
FLAC__METADATA_TYPE_PICTURE);
}
@ -594,7 +571,7 @@ gst_flac_dec_metadata_cb (const FLAC__StreamDecoder * decoder,
flacdec->min_blocksize, flacdec->max_blocksize);
/* Only scan for last block in pull-mode, since it uses pull_range() */
if (samples == 0 && flacdec->seekable_decoder) {
if (samples == 0 && !flacdec->streaming) {
gst_flac_dec_scan_for_last_block (flacdec, &samples);
}
@ -1064,14 +1041,14 @@ gst_flac_dec_loop (GstPad * sinkpad)
if (flacdec->init) {
GST_DEBUG_OBJECT (flacdec, "initializing new decoder");
is = FLAC__stream_decoder_init_stream (flacdec->seekable_decoder,
is = FLAC__stream_decoder_init_stream (flacdec->decoder,
gst_flac_dec_read_seekable, gst_flac_dec_seek, gst_flac_dec_tell,
gst_flac_dec_length, gst_flac_dec_eof, gst_flac_dec_write_stream,
gst_flac_dec_metadata_cb, gst_flac_dec_error_cb, flacdec);
if (is != FLAC__STREAM_DECODER_INIT_STATUS_OK)
goto analyze_state;
/* FLAC__seekable_stream_decoder_process_metadata (flacdec->seekable_decoder); */
/* FLAC__seekable_decoder_process_metadata (flacdec->decoder); */
flacdec->init = FALSE;
}
@ -1080,12 +1057,12 @@ gst_flac_dec_loop (GstPad * sinkpad)
flacdec->last_flow = GST_FLOW_OK;
GST_LOG_OBJECT (flacdec, "processing single");
FLAC__stream_decoder_process_single (flacdec->seekable_decoder);
FLAC__stream_decoder_process_single (flacdec->decoder);
analyze_state:
GST_LOG_OBJECT (flacdec, "done processing, checking encoder state");
s = FLAC__stream_decoder_get_state (flacdec->seekable_decoder);
s = FLAC__stream_decoder_get_state (flacdec->decoder);
switch (s) {
case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
case FLAC__STREAM_DECODER_READ_METADATA:
@ -1125,7 +1102,7 @@ analyze_state:
case FLAC__STREAM_DECODER_END_OF_STREAM:{
GST_DEBUG_OBJECT (flacdec, "EOS");
FLAC__stream_decoder_reset (flacdec->seekable_decoder);
FLAC__stream_decoder_reset (flacdec->decoder);
if ((flacdec->segment.flags & GST_SEEK_FLAG_SEGMENT) != 0) {
if (flacdec->segment.duration > 0) {
@ -1149,7 +1126,7 @@ analyze_state:
* state after the abort for FLAC__stream_decoder_seek_absolute()
* to work properly */
GST_DEBUG_OBJECT (flacdec, "flushing decoder to reset decoder state");
FLAC__stream_decoder_flush (flacdec->seekable_decoder);
FLAC__stream_decoder_flush (flacdec->decoder);
goto pause;
}
/* fall through */
@ -1211,7 +1188,7 @@ gst_flac_dec_sink_event (GstPad * pad, GstEvent * event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:{
if (dec->init == FALSE) {
FLAC__stream_decoder_flush (dec->stream_decoder);
FLAC__stream_decoder_flush (dec->decoder);
gst_adapter_clear (dec->adapter);
}
res = gst_pad_push_event (dec->srcpad, event);
@ -1265,10 +1242,9 @@ gst_flac_dec_sink_event (GstPad * pad, GstEvent * event)
gst_adapter_available (dec->adapter));
if (dec->init == FALSE) {
if (gst_adapter_available (dec->adapter) > 0) {
FLAC__stream_decoder_process_until_end_of_stream
(dec->stream_decoder);
FLAC__stream_decoder_process_until_end_of_stream (dec->decoder);
}
FLAC__stream_decoder_flush (dec->stream_decoder);
FLAC__stream_decoder_flush (dec->decoder);
}
gst_adapter_clear (dec->adapter);
res = gst_pad_push_event (dec->srcpad, event);
@ -1299,7 +1275,7 @@ gst_flac_dec_chain (GstPad * pad, GstBuffer * buf)
if (dec->init) {
GST_DEBUG_OBJECT (dec, "initializing decoder");
s = FLAC__stream_decoder_init_stream (dec->stream_decoder,
s = FLAC__stream_decoder_init_stream (dec->decoder,
gst_flac_dec_read_stream, NULL, NULL, NULL, NULL,
gst_flac_dec_write_stream, gst_flac_dec_metadata_cb,
gst_flac_dec_error_cb, dec);
@ -1314,7 +1290,7 @@ gst_flac_dec_chain (GstPad * pad, GstBuffer * buf)
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
/* Clear the adapter and the decoder */
gst_adapter_clear (dec->adapter);
FLAC__stream_decoder_flush (dec->stream_decoder);
FLAC__stream_decoder_flush (dec->decoder);
}
if (dec->framed) {
@ -1351,12 +1327,12 @@ gst_flac_dec_chain (GstPad * pad, GstBuffer * buf)
dec->last_flow == GST_FLOW_OK) {
GST_LOG_OBJECT (dec, "%u bytes available",
gst_adapter_available (dec->adapter));
if (!FLAC__stream_decoder_process_single (dec->stream_decoder)) {
if (!FLAC__stream_decoder_process_single (dec->decoder)) {
GST_DEBUG_OBJECT (dec, "process_single failed");
break;
}
if (FLAC__stream_decoder_get_state (dec->stream_decoder) ==
if (FLAC__stream_decoder_get_state (dec->decoder) ==
FLAC__STREAM_DECODER_ABORTED) {
GST_WARNING_OBJECT (dec, "Read callback caused internal abort");
dec->last_flow = GST_FLOW_ERROR;
@ -1367,7 +1343,7 @@ gst_flac_dec_chain (GstPad * pad, GstBuffer * buf)
/* framed - there should always be enough data to decode something */
GST_LOG_OBJECT (dec, "%u bytes available",
gst_adapter_available (dec->adapter));
if (!FLAC__stream_decoder_process_single (dec->stream_decoder)) {
if (!FLAC__stream_decoder_process_single (dec->decoder)) {
GST_DEBUG_OBJECT (dec, "process_single failed");
}
} else {
@ -1676,7 +1652,7 @@ gst_flac_dec_src_query (GstPad * pad, GstQuery * query)
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
if ((fmt != GST_FORMAT_TIME && fmt != GST_FORMAT_DEFAULT) ||
!flacdec->seekable_decoder) {
flacdec->streaming) {
gst_query_set_seeking (query, fmt, FALSE, -1, -1);
} else {
gst_query_set_seeking (query, GST_FORMAT_TIME, TRUE, 0, -1);
@ -1715,7 +1691,7 @@ gst_flac_dec_handle_seek_event (GstFlacDec * flacdec, GstEvent * event)
gint64 start, last_stop;
gint64 stop;
if (flacdec->seekable_decoder == NULL) {
if (flacdec->streaming) {
GST_DEBUG_OBJECT (flacdec, "seeking in streaming mode not implemented yet");
return FALSE;
}
@ -1817,7 +1793,7 @@ gst_flac_dec_handle_seek_event (GstFlacDec * flacdec, GstEvent * event)
flacdec->seeking = TRUE;
GST_LOG_OBJECT (flacdec, "calling seek_absolute");
seek_ok = FLAC__stream_decoder_seek_absolute (flacdec->seekable_decoder,
seek_ok = FLAC__stream_decoder_seek_absolute (flacdec->decoder,
flacdec->segment.last_stop);
GST_LOG_OBJECT (flacdec, "done with seek_absolute, seek_ok=%d", seek_ok);
@ -1960,8 +1936,10 @@ gst_flac_dec_sink_activate_push (GstPad * sinkpad, gboolean active)
{
GstFlacDec *dec = GST_FLAC_DEC (GST_OBJECT_PARENT (sinkpad));
if (active)
gst_flac_dec_setup_stream_decoder (dec);
if (active) {
gst_flac_dec_setup_decoder (dec);
dec->streaming = TRUE;
}
return TRUE;
}
@ -1976,8 +1954,9 @@ gst_flac_dec_sink_activate_pull (GstPad * sinkpad, gboolean active)
flacdec = GST_FLAC_DEC (GST_PAD_PARENT (sinkpad));
flacdec->offset = 0;
gst_flac_dec_setup_seekable_decoder (flacdec);
gst_flac_dec_setup_decoder (flacdec);
flacdec->running = TRUE;
flacdec->streaming = FALSE;
res = gst_pad_start_task (sinkpad, (GstTaskFunction) gst_flac_dec_loop,
sinkpad);

9
ext/flac/gstflacdec.h
View file

@ -43,15 +43,10 @@ struct _GstFlacDec {
/* < private > */
#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT < 8
FLAC__SeekableStreamDecoder *seekable_decoder; /* for pull-based operation */
#else
FLAC__StreamDecoder *seekable_decoder; /* for pull-based operation */
#endif
FLAC__StreamDecoder *stream_decoder; /* for chain-based operation */
FLAC__StreamDecoder *decoder;
GstAdapter *adapter;
gboolean framed;
gboolean streaming;
GstPad *sinkpad;
GstPad *srcpad;