static void
user_read_data (png_structp png_ptr, png_bytep data, png_size_t length)
{
GstPngDec *pngdec;
GstBuffer *buffer;
GstFlowReturn ret = GST_FLOW_OK;
pngdec = GST_PNGDEC (png_ptr->io_ptr);
GST_LOG ("reading %" G_GSIZE_FORMAT " bytes of data at offset %d", length,
pngdec->offset);
ret = gst_pad_pull_range (pngdec->sinkpad, pngdec->offset, length, &buffer);
if ((ret != GST_FLOW_OK) || (GST_BUFFER_SIZE (buffer) != length))
goto pause;
memcpy (data, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
gst_buffer_unref (buffer);
pngdec->offset += length;
return;
pause:
GST_INFO_OBJECT (pngdec, "pausing task, reason %s", gst_flow_get_name (ret));
gst_pad_pause_task (pngdec->sinkpad);
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ());
GST_ELEMENT_ERROR (pngdec, STREAM, FAILED,
(_("Internal data stream error.")),
("stream stopped, reason %s", gst_flow_get_name (ret)));
}
}
static GstFlowReturn
gst_cmml_enc_push_clip (GstCmmlEnc * enc, GstCmmlTagClip * clip,
GstClockTime prev_clip_time)
{
GstFlowReturn res;
GstBuffer *buffer;
gchar *clip_string;
gint64 granulepos;
/* encode the clip */
clip_string =
(gchar *) gst_cmml_parser_tag_clip_to_string (enc->parser, clip);
res = gst_cmml_enc_new_buffer (enc,
(guchar *) clip_string, strlen (clip_string), &buffer);
g_free (clip_string);
if (res != GST_FLOW_OK)
goto done;
GST_INFO_OBJECT (enc, "encoding clip"
"(start-time: %" GST_TIME_FORMAT " end-time: %" GST_TIME_FORMAT,
GST_TIME_ARGS (clip->start_time), GST_TIME_ARGS (clip->end_time));
/* set the granulepos */
granulepos = gst_cmml_clock_time_to_granule (prev_clip_time, clip->start_time,
enc->granulerate_n, enc->granulerate_d, enc->granuleshift);
if (granulepos == -1) {
gst_buffer_unref (buffer);
goto granule_overflow;
}
GST_BUFFER_OFFSET (buffer) = clip->start_time;
GST_BUFFER_OFFSET_END (buffer) = granulepos;
GST_BUFFER_TIMESTAMP (buffer) = clip->start_time;
res = gst_cmml_enc_push (enc, buffer);
if (GST_FLOW_IS_FATAL (res))
goto done;
if (clip->end_time != GST_CLOCK_TIME_NONE) {
/* create a new empty clip for the same cmml track starting at end_time
*/
GObject *end_clip = g_object_new (GST_TYPE_CMML_TAG_CLIP,
"start-time", clip->end_time, "track", clip->track, NULL);
/* encode the empty end clip */
gst_cmml_enc_push_clip (enc, GST_CMML_TAG_CLIP (end_clip),
clip->start_time);
g_object_unref (end_clip);
}
done:
return res;
granule_overflow:
GST_ELEMENT_ERROR (enc, STREAM, ENCODE, (NULL), ("granulepos overflow"));
return GST_FLOW_ERROR;
}
static GstFlowReturn
gst_dshowvideodec_chain (GstPad * pad, GstBuffer * buffer)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
bool discont = FALSE;
GstClockTime stop;
if (!vdec->setup) {
/* we are not setup */
GST_WARNING_OBJECT (vdec, "Decoder not set up, failing");
vdec->last_ret = GST_FLOW_FLUSHING;
goto beach;
}
if (GST_FLOW_IS_FATAL (vdec->last_ret)) {
GST_DEBUG_OBJECT (vdec, "last decoding iteration generated a fatal error "
"%s", gst_flow_get_name (vdec->last_ret));
goto beach;
}
/* check if duration is valid and use duration only when it's valid
/* because dshow is not decoding frames having stop smaller than start */
if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
stop = GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer);
} else {
stop = GST_BUFFER_TIMESTAMP (buffer);
}
GST_CAT_LOG_OBJECT (dshowvideodec_debug, vdec,
"chain (size %d)=> pts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT,
GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (stop));
/* if the incoming buffer has discont flag set => flush decoder data */
if (buffer && GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
GST_CAT_DEBUG_OBJECT (dshowvideodec_debug, vdec,
"this buffer has a DISCONT flag (%" GST_TIME_FORMAT "), flushing",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
gst_dshowvideodec_flush (vdec);
discont = TRUE;
}
/* push the buffer to the directshow decoder */
vdec->fakesrc->GetOutputPin()->PushBuffer(
GST_BUFFER_DATA (buffer), GST_BUFFER_TIMESTAMP (buffer), stop,
GST_BUFFER_SIZE (buffer), discont);
beach:
gst_buffer_unref (buffer);
gst_object_unref (vdec);
return vdec->last_ret;
}
static GstFlowReturn
gst_cmml_enc_push (GstCmmlEnc * enc, GstBuffer * buffer)
{
GstFlowReturn res;
/* FIXME: hack to make oggmux flush every cmml tag in its own page */
GST_BUFFER_DURATION (buffer) = G_MAXINT64;
res = gst_pad_push (enc->srcpad, buffer);
if (GST_FLOW_IS_FATAL (res))
GST_WARNING_OBJECT (enc, "push returned: %s", gst_flow_get_name (res));
return res;
}
static GstFlowReturn
gst_dshowaudiodec_chain (GstPad * pad, GstBuffer * buffer)
{
GstDshowAudioDec *adec = (GstDshowAudioDec *) gst_pad_get_parent (pad);
bool discont = FALSE;
if (!adec->setup) {
/* we are not set up */
GST_WARNING_OBJECT (adec, "Decoder not set up, failing");
adec->last_ret = GST_FLOW_WRONG_STATE;
goto beach;
}
if (GST_FLOW_IS_FATAL (adec->last_ret)) {
GST_DEBUG_OBJECT (adec, "last decoding iteration generated a fatal error "
"%s", gst_flow_get_name (adec->last_ret));
goto beach;
}
GST_CAT_DEBUG_OBJECT (dshowaudiodec_debug, adec, "chain (size %d)=> pts %"
GST_TIME_FORMAT " stop %" GST_TIME_FORMAT,
GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer) +
GST_BUFFER_DURATION (buffer)));
/* if the incoming buffer has discont flag set => flush decoder data */
if (buffer && GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
GST_CAT_DEBUG_OBJECT (dshowaudiodec_debug, adec,
"this buffer has a DISCONT flag (%" GST_TIME_FORMAT "), flushing",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
gst_dshowaudiodec_flush (adec);
discont = TRUE;
}
/* push the buffer to the directshow decoder */
adec->fakesrc->GetOutputPin()->PushBuffer (
GST_BUFFER_DATA (buffer), GST_BUFFER_TIMESTAMP (buffer),
GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer),
GST_BUFFER_SIZE (buffer), (bool)discont);
beach:
gst_buffer_unref (buffer);
gst_object_unref (adec);
return adec->last_ret;
}
/* encode the CMML head tag and push the CMML headers
*/
static void
gst_cmml_enc_parse_tag_head (GstCmmlEnc * enc, GstCmmlTagHead * head)
{
GList *headers = NULL;
GList *walk;
guchar *head_string;
GstCaps *caps;
GstBuffer *ident_buf, *preamble_buf, *head_buf;
GstBuffer *buffer;
if (enc->preamble == NULL)
goto flow_unexpected;
GST_INFO_OBJECT (enc, "parsing head tag");
enc->flow_return = gst_cmml_enc_new_ident_header (enc, &ident_buf);
if (enc->flow_return != GST_FLOW_OK)
goto alloc_error;
headers = g_list_append (headers, ident_buf);
enc->flow_return = gst_cmml_enc_new_buffer (enc,
enc->preamble, strlen ((gchar *) enc->preamble), &preamble_buf);
if (enc->flow_return != GST_FLOW_OK)
goto alloc_error;
headers = g_list_append (headers, preamble_buf);
head_string = gst_cmml_parser_tag_head_to_string (enc->parser, head);
enc->flow_return = gst_cmml_enc_new_buffer (enc,
head_string, strlen ((gchar *) head_string), &head_buf);
g_free (head_string);
if (enc->flow_return != GST_FLOW_OK)
goto alloc_error;
headers = g_list_append (headers, head_buf);
caps = gst_pad_get_caps (enc->srcpad);
caps = gst_cmml_enc_set_header_on_caps (enc, caps,
ident_buf, preamble_buf, head_buf);
while (headers) {
buffer = GST_BUFFER (headers->data);
/* set granulepos 0 on headers */
GST_BUFFER_OFFSET_END (buffer) = 0;
gst_buffer_set_caps (buffer, caps);
enc->flow_return = gst_cmml_enc_push (enc, buffer);
headers = g_list_delete_link (headers, headers);
if (GST_FLOW_IS_FATAL (enc->flow_return))
goto push_error;
}
gst_caps_unref (caps);
enc->sent_headers = TRUE;
return;
flow_unexpected:
GST_ELEMENT_ERROR (enc, STREAM, ENCODE,
(NULL), ("got head tag before preamble"));
enc->flow_return = GST_FLOW_ERROR;
return;
push_error:
gst_caps_unref (caps);
/* fallthrough */
alloc_error:
for (walk = headers; walk; walk = walk->next)
gst_buffer_unref (GST_BUFFER (walk->data));
g_list_free (headers);
return;
}
static void
gst_pngdec_task (GstPad * pad)
{
GstPngDec *pngdec;
GstBuffer *buffer = NULL;
size_t buffer_size = 0;
gint i = 0;
png_bytep *rows, inp;
png_uint_32 rowbytes;
GstFlowReturn ret = GST_FLOW_OK;
pngdec = GST_PNGDEC (GST_OBJECT_PARENT (pad));
GST_LOG_OBJECT (pngdec, "read frame");
/* Let libpng come back here on error */
if (setjmp (png_jmpbuf (pngdec->png))) {
ret = GST_FLOW_ERROR;
goto pause;
}
/* Set reading callback */
png_set_read_fn (pngdec->png, pngdec, user_read_data);
/* Read info */
png_read_info (pngdec->png, pngdec->info);
/* Generate the caps and configure */
ret = gst_pngdec_caps_create_and_set (pngdec);
if (ret != GST_FLOW_OK) {
goto pause;
}
/* Allocate output buffer */
rowbytes = png_get_rowbytes (pngdec->png, pngdec->info);
if (rowbytes > (G_MAXUINT32 - 3) || pngdec->height > G_MAXUINT32 / rowbytes) {
ret = GST_FLOW_ERROR;
goto pause;
}
rowbytes = GST_ROUND_UP_4 (rowbytes);
buffer_size = pngdec->height * rowbytes;
ret =
gst_pad_alloc_buffer_and_set_caps (pngdec->srcpad, GST_BUFFER_OFFSET_NONE,
buffer_size, GST_PAD_CAPS (pngdec->srcpad), &buffer);
if (ret != GST_FLOW_OK)
goto pause;
rows = (png_bytep *) g_malloc (sizeof (png_bytep) * pngdec->height);
inp = GST_BUFFER_DATA (buffer);
for (i = 0; i < pngdec->height; i++) {
rows[i] = inp;
inp += rowbytes;
}
/* Read the actual picture */
png_read_image (pngdec->png, rows);
g_free (rows);
/* Push the raw RGB frame */
ret = gst_pad_push (pngdec->srcpad, buffer);
if (ret != GST_FLOW_OK)
goto pause;
/* And we are done */
gst_pad_pause_task (pngdec->sinkpad);
gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ());
return;
pause:
{
GST_INFO_OBJECT (pngdec, "pausing task, reason %s",
gst_flow_get_name (ret));
gst_pad_pause_task (pngdec->sinkpad);
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
GST_ELEMENT_ERROR (pngdec, STREAM, FAILED,
(_("Internal data stream error.")),
("stream stopped, reason %s", gst_flow_get_name (ret)));
gst_pad_push_event (pngdec->srcpad, gst_event_new_eos ());
}
}
}
static void
gst_timidity_loop (GstPad * sinkpad)
{
GstTimidity *timidity = GST_TIMIDITY (GST_PAD_PARENT (sinkpad));
GstBuffer *out;
GstFlowReturn ret;
if (timidity->mididata_size == 0) {
if (!gst_timidity_get_upstream_size (timidity, &timidity->mididata_size)) {
GST_ELEMENT_ERROR (timidity, STREAM, DECODE, (NULL),
("Unable to get song length"));
goto paused;
}
if (timidity->mididata)
g_free (timidity->mididata);
timidity->mididata = g_malloc (timidity->mididata_size);
timidity->mididata_offset = 0;
return;
}
if (timidity->mididata_offset < timidity->mididata_size) {
GstBuffer *buffer;
gint64 size;
GST_DEBUG_OBJECT (timidity, "loading song");
ret =
gst_pad_pull_range (timidity->sinkpad, timidity->mididata_offset,
-1, &buffer);
if (ret != GST_FLOW_OK) {
GST_ELEMENT_ERROR (timidity, STREAM, DECODE, (NULL),
("Unable to load song"));
goto paused;
}
size = timidity->mididata_size - timidity->mididata_offset;
if (GST_BUFFER_SIZE (buffer) < size)
size = GST_BUFFER_SIZE (buffer);
memmove (timidity->mididata + timidity->mididata_offset,
GST_BUFFER_DATA (buffer), size);
gst_buffer_unref (buffer);
timidity->mididata_offset += size;
GST_DEBUG_OBJECT (timidity, "Song loaded");
return;
}
if (!timidity->song) {
MidIStream *stream;
GstTagList *tags = NULL;
gchar *text;
GST_DEBUG_OBJECT (timidity, "Parsing song");
stream =
mid_istream_open_mem (timidity->mididata, timidity->mididata_size, 0);
timidity->song = mid_song_load (stream, timidity->song_options);
mid_istream_close (stream);
if (!timidity->song) {
GST_ELEMENT_ERROR (timidity, STREAM, DECODE, (NULL),
("Unable to parse midi"));
goto paused;
}
mid_song_start (timidity->song);
timidity->o_len = (GST_MSECOND *
(GstClockTime) mid_song_get_total_time (timidity->song)) /
timidity->time_per_frame;
gst_segment_set_newsegment (timidity->o_segment, FALSE, 1.0,
GST_FORMAT_DEFAULT, 0, GST_CLOCK_TIME_NONE, 0);
gst_pad_push_event (timidity->srcpad,
gst_timidity_get_new_segment_event (timidity, GST_FORMAT_TIME, FALSE));
/* extract tags */
text = mid_song_get_meta (timidity->song, MID_SONG_TEXT);
if (text) {
tags = gst_tag_list_new ();
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_TITLE, text, NULL);
//g_free (text);
}
text = mid_song_get_meta (timidity->song, MID_SONG_COPYRIGHT);
if (text) {
if (tags == NULL)
tags = gst_tag_list_new ();
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND,
GST_TAG_COPYRIGHT, text, NULL);
//g_free (text);
}
if (tags) {
gst_element_found_tags (GST_ELEMENT (timidity), tags);
}
GST_DEBUG_OBJECT (timidity, "Parsing song done");
return;
}
if (timidity->o_segment_changed) {
GstSegment *segment = gst_timidity_get_segment (timidity, GST_FORMAT_TIME,
!timidity->o_new_segment);
GST_LOG_OBJECT (timidity,
"sending newsegment from %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT
", pos=%" GST_TIME_FORMAT, GST_TIME_ARGS ((guint64) segment->start),
GST_TIME_ARGS ((guint64) segment->stop),
GST_TIME_ARGS ((guint64) segment->time));
if (timidity->o_segment->flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT (timidity),
gst_message_new_segment_start (GST_OBJECT (timidity),
segment->format, segment->start));
}
gst_segment_free (segment);
timidity->o_segment_changed = FALSE;
return;
}
if (timidity->o_seek) {
/* perform a seek internally */
timidity->o_segment->last_stop = timidity->o_segment->time;
mid_song_seek (timidity->song,
(timidity->o_segment->last_stop * timidity->time_per_frame) /
GST_MSECOND);
}
out = gst_timidity_get_buffer (timidity);
if (!out) {
GST_LOG_OBJECT (timidity, "Song ended, generating eos");
gst_pad_push_event (timidity->srcpad, gst_event_new_eos ());
timidity->o_seek = FALSE;
goto paused;
}
if (timidity->o_seek) {
GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
timidity->o_seek = FALSE;
}
gst_buffer_set_caps (out, timidity->out_caps);
ret = gst_pad_push (timidity->srcpad, out);
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED)
goto error;
return;
paused:
{
GST_DEBUG_OBJECT (timidity, "pausing task");
gst_pad_pause_task (timidity->sinkpad);
return;
}
error:
{
GST_ELEMENT_ERROR (timidity, STREAM, FAILED,
("Internal data stream error"),
("Streaming stopped, reason %s", gst_flow_get_name (ret)));
gst_pad_push_event (timidity->srcpad, gst_event_new_eos ());
goto paused;
}
}
static GstFlowReturn
gst_ogg_avi_parse_chain (GstPad * pad, GstBuffer * buffer)
{
GstFlowReturn result = GST_FLOW_OK;
GstOggAviParse *ogg;
guint8 *data;
guint size;
gchar *oggbuf;
gint ret = -1;
ogg = GST_OGG_AVI_PARSE (GST_OBJECT_PARENT (pad));
data = GST_BUFFER_DATA (buffer);
size = GST_BUFFER_SIZE (buffer);
GST_LOG_OBJECT (ogg, "Chain function received buffer of size %d", size);
if (GST_BUFFER_IS_DISCONT (buffer)) {
ogg_sync_reset (&ogg->sync);
ogg->discont = TRUE;
}
/* write data to sync layer */
oggbuf = ogg_sync_buffer (&ogg->sync, size);
memcpy (oggbuf, data, size);
ogg_sync_wrote (&ogg->sync, size);
gst_buffer_unref (buffer);
/* try to get as many packets out of the stream as possible */
do {
ogg_page page;
/* try to swap out a page */
ret = ogg_sync_pageout (&ogg->sync, &page);
if (ret == 0) {
GST_DEBUG_OBJECT (ogg, "need more data");
break;
} else if (ret == -1) {
GST_DEBUG_OBJECT (ogg, "discont in pages");
ogg->discont = TRUE;
} else {
/* new unknown stream, init the ogg stream with the serial number of the
* page. */
if (ogg->serial == -1) {
ogg->serial = ogg_page_serialno (&page);
ogg_stream_init (&ogg->stream, ogg->serial);
}
/* submit page */
if (ogg_stream_pagein (&ogg->stream, &page) != 0) {
GST_WARNING_OBJECT (ogg, "ogg stream choked on page resetting stream");
ogg_sync_reset (&ogg->sync);
ogg->discont = TRUE;
continue;
}
/* try to get as many packets as possible out of the page */
do {
ogg_packet packet;
ret = ogg_stream_packetout (&ogg->stream, &packet);
GST_LOG_OBJECT (ogg, "packetout gave %d", ret);
switch (ret) {
case 0:
break;
case -1:
/* out of sync, We mark a DISCONT. */
ogg->discont = TRUE;
break;
case 1:
result = gst_ogg_avi_parse_push_packet (ogg, &packet);
if (GST_FLOW_IS_FATAL (result))
goto done;
break;
default:
GST_WARNING_OBJECT (ogg,
"invalid return value %d for ogg_stream_packetout, resetting stream",
ret);
break;
}
}
while (ret != 0);
}
}
while (ret != 0);
done:
return result;
}
static void
spc_play (GstPad * pad)
{
GstSpcDec *spc = GST_SPC_DEC (gst_pad_get_parent (pad));
GstFlowReturn flow_return;
GstBuffer *out;
gboolean seeking = spc->seeking;
gint64 duration, fade, end, position;
if (!seeking) {
out = gst_buffer_new_and_alloc (1600 * 4);
gst_buffer_set_caps (out, GST_PAD_CAPS (pad));
GST_BUFFER_TIMESTAMP (out) =
(gint64) gst_util_uint64_scale ((guint64) spc->byte_pos, GST_SECOND,
32000 * 2 * 2);
spc->byte_pos += OSPC_Run (-1, (short *) GST_BUFFER_DATA (out), 1600 * 4);
} else {
if (spc->seekpoint < spc->byte_pos) {
OSPC_Init (GST_BUFFER_DATA (spc->buf), GST_BUFFER_SIZE (spc->buf));
spc->byte_pos = 0;
}
spc->byte_pos += OSPC_Run (-1, NULL, 1600 * 4);
if (spc->byte_pos >= spc->seekpoint) {
spc->seeking = FALSE;
}
out = gst_buffer_new ();
gst_buffer_set_caps (out, GST_PAD_CAPS (pad));
}
duration = gst_spc_duration (spc);
fade = gst_spc_fadeout (spc);
end = duration + fade;
position =
(gint64) gst_util_uint64_scale ((guint64) spc->byte_pos, GST_SECOND,
32000 * 2 * 2);
if (position >= duration) {
gint16 *data = (gint16 *) GST_BUFFER_DATA (out);
guint32 size = GST_BUFFER_SIZE (out) / sizeof (gint16);
unsigned int i;
gint64 num = (fade - (position - duration));
for (i = 0; i < size; i++) {
/* Apply a parabolic volume envelope */
data[i] = (gint16) (data[i] * num / fade * num / fade);
}
}
if ((flow_return = gst_pad_push (spc->srcpad, out)) != GST_FLOW_OK) {
GST_DEBUG_OBJECT (spc, "pausing task, reason %s",
gst_flow_get_name (flow_return));
gst_pad_pause_task (pad);
if (GST_FLOW_IS_FATAL (flow_return) || flow_return == GST_FLOW_NOT_LINKED) {
gst_pad_push_event (pad, gst_event_new_eos ());
}
}
if (position >= end) {
gst_pad_pause_task (pad);
gst_pad_push_event (pad, gst_event_new_eos ());
}
gst_object_unref (spc);
return;
}
static GstFlowReturn
gst_nuv_demux_play (GstPad * pad)
{
GstFlowReturn res = GST_FLOW_OK;
GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad));
switch (nuv->state) {
case GST_NUV_DEMUX_START:
res = gst_nuv_demux_stream_file_header (nuv);
if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
goto pause;
}
if (nuv->state != GST_NUV_DEMUX_HEADER_DATA)
break;
case GST_NUV_DEMUX_HEADER_DATA:
res = gst_nuv_demux_stream_header_data (nuv);
if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
goto pause;
}
if (nuv->state != GST_NUV_DEMUX_EXTRA_DATA)
break;
case GST_NUV_DEMUX_EXTRA_DATA:
res = gst_nuv_demux_stream_extra_data (nuv);
if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
goto pause;
}
if (nuv->state != GST_NUV_DEMUX_MPEG_DATA)
break;
case GST_NUV_DEMUX_MPEG_DATA:
res = gst_nuv_demux_stream_mpeg_data (nuv);
if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
goto pause;
}
if (nuv->state != GST_NUV_DEMUX_EXTEND_HEADER)
break;
case GST_NUV_DEMUX_EXTEND_HEADER:
res = gst_nuv_demux_stream_extend_header (nuv);
if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
goto pause;
}
if (nuv->state != GST_NUV_DEMUX_EXTEND_HEADER_DATA)
break;
case GST_NUV_DEMUX_EXTEND_HEADER_DATA:
res = gst_nuv_demux_stream_extend_header_data (nuv);
if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
goto pause;
}
if (nuv->state != GST_NUV_DEMUX_FRAME_HEADER)
break;
case GST_NUV_DEMUX_FRAME_HEADER:
res = gst_nuv_demux_read_head_frame (nuv);
if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
goto pause;
}
if (nuv->state != GST_NUV_DEMUX_MOVI)
break;
case GST_NUV_DEMUX_MOVI:
res = gst_nuv_demux_stream_data (nuv);
if ((res != GST_FLOW_OK) && (res != GST_FLOW_CUSTOM_ERROR)) {
goto pause;
}
break;
case GST_NUV_DEMUX_INVALID_DATA:
goto pause;
break;
default:
g_assert_not_reached ();
}
GST_DEBUG_OBJECT (nuv, "state: %d res:%s", nuv->state,
gst_flow_get_name (res));
return GST_FLOW_OK;
pause:
GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));
gst_pad_pause_task (nuv->sinkpad);
if (GST_FLOW_IS_FATAL (res)) {
GST_ELEMENT_ERROR (nuv, STREAM, FAILED,
(_("Internal data stream error.")),
("streaming stopped, reason %s", gst_flow_get_name (res)));
gst_nuv_demux_send_eos (nuv);
}
return res;
}
static void
gst_wavpack_parse_loop (GstElement * element)
{
GstWavpackParse *parse = GST_WAVPACK_PARSE (element);
GstFlowReturn flow_ret;
WavpackHeader header = { {0,}, 0, };
GstBuffer *buf = NULL;
flow_ret = gst_wavpack_parse_resync_loop (parse, &header);
if (flow_ret != GST_FLOW_OK)
goto pause;
GST_LOG_OBJECT (parse, "Read header at offset %" G_GINT64_FORMAT
": chunk size = %u+8", parse->current_offset, header.ckSize);
buf = gst_wavpack_parse_pull_buffer (parse, parse->current_offset,
header.ckSize + 8, &flow_ret);
if (flow_ret != GST_FLOW_OK)
goto pause;
if (parse->srcpad == NULL) {
if (!gst_wavpack_parse_create_src_pad (parse, buf, &header)) {
GST_ERROR_OBJECT (parse, "Failed to create src pad");
flow_ret = GST_FLOW_ERROR;
goto pause;
}
}
if (header.flags & INITIAL_BLOCK)
gst_wavpack_parse_index_append_entry (parse, parse->current_offset,
header.block_index, header.block_samples);
flow_ret = gst_wavpack_parse_push_buffer (parse, buf, &header);
if (flow_ret != GST_FLOW_OK)
goto pause;
return;
pause:
{
const gchar *reason = gst_flow_get_name (flow_ret);
GST_LOG_OBJECT (parse, "pausing task, reason %s", reason);
gst_pad_pause_task (parse->sinkpad);
if (GST_FLOW_IS_FATAL (flow_ret) || flow_ret == GST_FLOW_NOT_LINKED) {
if (flow_ret == GST_FLOW_UNEXPECTED && parse->srcpad) {
if (parse->segment.flags & GST_SEEK_FLAG_SEGMENT) {
GstClockTime stop;
GST_LOG_OBJECT (parse, "Sending segment done");
if ((stop = parse->segment.stop) == -1)
stop = parse->segment.duration;
gst_element_post_message (GST_ELEMENT_CAST (parse),
gst_message_new_segment_done (GST_OBJECT_CAST (parse),
parse->segment.format, stop));
} else {
GST_LOG_OBJECT (parse, "Sending EOS, at end of stream");
gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
}
} else {
GST_ELEMENT_ERROR (parse, STREAM, FAILED,
(_("Internal data stream error.")),
("stream stopped, reason %s", reason));
if (parse->srcpad)
gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
}
}
return;
}
}
static void
gst_wildmidi_loop (GstPad * sinkpad)
{
GstWildmidi *wildmidi = GST_WILDMIDI (GST_PAD_PARENT (sinkpad));
GstFlowReturn ret;
switch (wildmidi->state) {
case GST_WILDMIDI_STATE_LOAD:
{
GstBuffer *buffer;
GST_DEBUG_OBJECT (wildmidi, "loading song");
ret =
gst_pad_pull_range (wildmidi->sinkpad, wildmidi->offset, -1, &buffer);
if (ret == GST_FLOW_UNEXPECTED) {
GST_DEBUG_OBJECT (wildmidi, "Song loaded");
wildmidi->state = GST_WILDMIDI_STATE_PARSE;
} else if (ret != GST_FLOW_OK) {
GST_ELEMENT_ERROR (wildmidi, STREAM, DECODE, (NULL),
("Unable to read song"));
goto pause;
} else {
GST_DEBUG_OBJECT (wildmidi, "pushing buffer");
gst_adapter_push (wildmidi->adapter, buffer);
wildmidi->offset += GST_BUFFER_SIZE (buffer);
}
break;
}
case GST_WILDMIDI_STATE_PARSE:
ret = gst_wildmidi_parse_song (wildmidi);
if (ret != GST_FLOW_OK)
goto pause;
wildmidi->state = GST_WILDMIDI_STATE_PLAY;
break;
case GST_WILDMIDI_STATE_PLAY:
ret = gst_wildmidi_do_play (wildmidi);
if (ret != GST_FLOW_OK)
goto pause;
break;
default:
break;
}
return;
pause:
{
const gchar *reason = gst_flow_get_name (ret);
GstEvent *event;
GST_DEBUG_OBJECT (wildmidi, "pausing task, reason %s", reason);
gst_pad_pause_task (sinkpad);
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
if (ret == GST_FLOW_UNEXPECTED) {
/* perform EOS logic */
event = gst_event_new_eos ();
gst_pad_push_event (wildmidi->srcpad, event);
} else {
event = gst_event_new_eos ();
/* for fatal errors we post an error message, post the error
* first so the app knows about the error first. */
GST_ELEMENT_ERROR (wildmidi, STREAM, FAILED,
("Internal data flow error."),
("streaming task paused, reason %s (%d)", reason, ret));
gst_pad_push_event (wildmidi->srcpad, event);
}
}
}
}
static void
gst_aiffparse_loop (GstPad * pad)
{
GstFlowReturn ret;
AIFFParse *aiff = AIFFPARSE (GST_PAD_PARENT (pad));
GST_LOG_OBJECT (aiff, "process data");
switch (aiff->state) {
case AIFFPARSE_START:
GST_INFO_OBJECT (aiff, "AIFFPARSE_START");
if ((ret = gst_aiffparse_stream_init (aiff)) != GST_FLOW_OK)
goto pause;
aiff->state = AIFFPARSE_HEADER;
/* fall-through */
case AIFFPARSE_HEADER:
GST_INFO_OBJECT (aiff, "AIFFPARSE_HEADER");
if ((ret = gst_aiffparse_stream_headers (aiff)) != GST_FLOW_OK)
goto pause;
aiff->state = AIFFPARSE_DATA;
GST_INFO_OBJECT (aiff, "AIFFPARSE_DATA");
/* fall-through */
case AIFFPARSE_DATA:
if ((ret = gst_aiffparse_stream_data (aiff)) != GST_FLOW_OK)
goto pause;
break;
default:
g_assert_not_reached ();
}
return;
/* ERRORS */
pause:
{
const gchar *reason = gst_flow_get_name (ret);
GST_DEBUG_OBJECT (aiff, "pausing task, reason %s", reason);
aiff->segment_running = FALSE;
gst_pad_pause_task (pad);
if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
if (ret == GST_FLOW_UNEXPECTED) {
/* perform EOS logic */
if (aiff->segment.flags & GST_SEEK_FLAG_SEGMENT) {
GstClockTime stop;
if ((stop = aiff->segment.stop) == -1)
stop = aiff->segment.duration;
gst_element_post_message (GST_ELEMENT_CAST (aiff),
gst_message_new_segment_done (GST_OBJECT_CAST (aiff),
aiff->segment.format, stop));
} else {
gst_pad_push_event (aiff->srcpad, gst_event_new_eos ());
}
} else {
/* for fatal errors we post an error message, post the error
* first so the app knows about the error first. */
GST_ELEMENT_ERROR (aiff, STREAM, FAILED,
(_("Internal data flow error.")),
("streaming task paused, reason %s (%d)", reason, ret));
gst_pad_push_event (aiff->srcpad, gst_event_new_eos ());
}
}
return;
}
}
static void
gst_rnd_buffer_size_loop (GstRndBufferSize * self)
{
GstBuffer *buf = NULL;
GstFlowReturn ret;
guint num_bytes;
if (G_UNLIKELY (self->min > self->max))
goto bogus_minmax;
if (G_UNLIKELY (self->min != self->max)) {
num_bytes = g_rand_int_range (self->rand, self->min, self->max);
} else {
num_bytes = self->min;
}
GST_LOG_OBJECT (self, "pulling %u bytes at offset %" G_GUINT64_FORMAT,
num_bytes, self->offset);
ret = gst_pad_pull_range (self->sinkpad, self->offset, num_bytes, &buf);
if (ret != GST_FLOW_OK)
goto pull_failed;
if (GST_BUFFER_SIZE (buf) < num_bytes) {
GST_WARNING_OBJECT (self, "short buffer: %u bytes", GST_BUFFER_SIZE (buf));
}
self->offset += GST_BUFFER_SIZE (buf);
ret = gst_pad_push (self->srcpad, buf);
if (ret != GST_FLOW_OK)
goto push_failed;
return;
pause_task:
{
GST_DEBUG_OBJECT (self, "pausing task");
gst_pad_pause_task (self->sinkpad);
return;
}
pull_failed:
{
if (ret == GST_FLOW_UNEXPECTED) {
GST_DEBUG_OBJECT (self, "eos");
gst_pad_push_event (self->srcpad, gst_event_new_eos ());
} else {
GST_WARNING_OBJECT (self, "pull_range flow: %s", gst_flow_get_name (ret));
}
goto pause_task;
}
push_failed:
{
GST_DEBUG_OBJECT (self, "push flow: %s", gst_flow_get_name (ret));
if (ret == GST_FLOW_UNEXPECTED) {
GST_DEBUG_OBJECT (self, "eos");
gst_pad_push_event (self->srcpad, gst_event_new_eos ());
} else if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
("Internal data stream error."),
("streaming stopped, reason: %s", gst_flow_get_name (ret)));
}
goto pause_task;
}
bogus_minmax:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS,
("The minimum buffer size is smaller than the maximum buffer size."),
("buffer sizes: max=%ld, min=%ld", self->min, self->max));
goto pause_task;
}
}
