static void
run_test_take (struct TestParams *params)
{
/* Create an adapter and feed it data of fixed size, then retrieve it in
* a different size */
GstAdapter *adapter = gst_adapter_new ();
guint8 *data;
GstBuffer *buf;
int i;
gint ntimes = params->tot_size / params->write_size;
for (i = 0; i < ntimes; i++) {
buf = gst_buffer_new_and_alloc (params->write_size);
memset (GST_BUFFER_DATA (buf), 0, params->write_size);
gst_adapter_push (adapter, buf);
}
do {
data = gst_adapter_take (adapter, params->read_size);
if (data == NULL)
break;
g_free (data);
} while (TRUE);
g_object_unref (adapter);
}
static GstFlowReturn
gst_wildmidi_parse_song (GstWildmidi * wildmidi)
{
struct _WM_Info *info;
GstCaps *outcaps;
guint8 *data;
guint size;
GST_DEBUG_OBJECT (wildmidi, "Parsing song");
size = gst_adapter_available (wildmidi->adapter);
data = gst_adapter_take (wildmidi->adapter, size);
/* this method takes our memory block */
GST_OBJECT_LOCK (wildmidi);
wildmidi->song = WildMidi_OpenBuffer (data, size);
if (!wildmidi->song)
goto open_failed;
WildMidi_LoadSamples (wildmidi->song);
WildMidi_SetOption (wildmidi->song, WM_MO_LINEAR_VOLUME,
wildmidi->linear_volume);
WildMidi_SetOption (wildmidi->song, WM_MO_EXPENSIVE_INTERPOLATION,
wildmidi->high_quality);
info = WildMidi_GetInfo (wildmidi->song);
GST_OBJECT_UNLOCK (wildmidi);
wildmidi->o_len = info->approx_total_samples;
outcaps = gst_caps_copy (gst_pad_get_pad_template_caps (wildmidi->srcpad));
gst_pad_set_caps (wildmidi->srcpad, outcaps);
gst_caps_unref (outcaps);
/* we keep an internal segment in samples */
gst_segment_set_newsegment (wildmidi->o_segment, FALSE, 1.0,
GST_FORMAT_DEFAULT, 0, GST_CLOCK_TIME_NONE, 0);
gst_pad_push_event (wildmidi->srcpad,
gst_wildmidi_get_new_segment_event (wildmidi, GST_FORMAT_TIME));
GST_DEBUG_OBJECT (wildmidi, "Parsing song done");
return GST_FLOW_OK;
/* ERRORS */
open_failed:
{
GST_OBJECT_UNLOCK (wildmidi);
GST_ELEMENT_ERROR (wildmidi, STREAM, DECODE, (NULL),
("Unable to parse midi data"));
return GST_FLOW_ERROR;
}
}
static gboolean
gst_rsvg_overlay_data_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstRsvgOverlay *overlay = GST_RSVG_OVERLAY (GST_PAD_PARENT (pad));
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:{
guint data_size;
GST_RSVG_LOCK (overlay);
/* FIXME: rsvgdec looks for </svg> in data to determine the end
of SVG code. Should we really do the same here? IOW, could
data be sent and _pushed() before the EOS gets processed? */
data_size = gst_adapter_available (overlay->adapter);
if (data_size) {
gst_rsvg_overlay_set_svg_data (overlay,
(const gchar *) gst_adapter_take (overlay->adapter, data_size),
FALSE);
gst_adapter_clear (overlay->adapter);
}
GST_RSVG_UNLOCK (overlay);
}
break;
case GST_EVENT_FLUSH_STOP:
gst_adapter_clear (overlay->adapter);
break;
default:
break;
}
/* Dropping all events here */
gst_event_unref (event);
return TRUE;
}
static GstFlowReturn
gst_flxdec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstCaps *caps;
guint avail;
GstFlowReturn res = GST_FLOW_OK;
GstFlxDec *flxdec;
FlxHeader *flxh;
g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
flxdec = (GstFlxDec *) parent;
g_return_val_if_fail (flxdec != NULL, GST_FLOW_ERROR);
gst_adapter_push (flxdec->adapter, buf);
avail = gst_adapter_available (flxdec->adapter);
if (flxdec->state == GST_FLXDEC_READ_HEADER) {
if (avail >= FlxHeaderSize) {
const guint8 *data = gst_adapter_map (flxdec->adapter, FlxHeaderSize);
GstCaps *templ;
memcpy ((gchar *) & flxdec->hdr, data, FlxHeaderSize);
FLX_HDR_FIX_ENDIANNESS (&(flxdec->hdr));
gst_adapter_unmap (flxdec->adapter);
gst_adapter_flush (flxdec->adapter, FlxHeaderSize);
flxh = &flxdec->hdr;
/* check header */
if (flxh->type != FLX_MAGICHDR_FLI &&
flxh->type != FLX_MAGICHDR_FLC && flxh->type != FLX_MAGICHDR_FLX)
goto wrong_type;
GST_LOG ("size : %d", flxh->size);
GST_LOG ("frames : %d", flxh->frames);
GST_LOG ("width : %d", flxh->width);
GST_LOG ("height : %d", flxh->height);
GST_LOG ("depth : %d", flxh->depth);
GST_LOG ("speed : %d", flxh->speed);
flxdec->next_time = 0;
if (flxh->type == FLX_MAGICHDR_FLI) {
flxdec->frame_time = JIFFIE * flxh->speed;
} else if (flxh->speed == 0) {
flxdec->frame_time = GST_SECOND / 70;
} else {
flxdec->frame_time = flxh->speed * GST_MSECOND;
}
flxdec->duration = flxh->frames * flxdec->frame_time;
GST_LOG ("duration : %" GST_TIME_FORMAT,
GST_TIME_ARGS (flxdec->duration));
templ = gst_pad_get_pad_template_caps (flxdec->srcpad);
caps = gst_caps_copy (templ);
gst_caps_unref (templ);
gst_caps_set_simple (caps,
"width", G_TYPE_INT, flxh->width,
"height", G_TYPE_INT, flxh->height,
"framerate", GST_TYPE_FRACTION, (gint) GST_MSECOND,
(gint) flxdec->frame_time / 1000, NULL);
gst_pad_set_caps (flxdec->srcpad, caps);
gst_caps_unref (caps);
if (flxh->depth <= 8)
flxdec->converter =
flx_colorspace_converter_new (flxh->width, flxh->height);
if (flxh->type == FLX_MAGICHDR_FLC || flxh->type == FLX_MAGICHDR_FLX) {
GST_LOG ("(FLC) aspect_dx : %d", flxh->aspect_dx);
GST_LOG ("(FLC) aspect_dy : %d", flxh->aspect_dy);
GST_LOG ("(FLC) oframe1 : 0x%08x", flxh->oframe1);
GST_LOG ("(FLC) oframe2 : 0x%08x", flxh->oframe2);
}
flxdec->size = (flxh->width * flxh->height);
/* create delta and output frame */
flxdec->frame_data = g_malloc (flxdec->size);
flxdec->delta_data = g_malloc (flxdec->size);
flxdec->state = GST_FLXDEC_PLAYING;
}
} else if (flxdec->state == GST_FLXDEC_PLAYING) {
GstBuffer *out;
/* while we have enough data in the adapter */
while (avail >= FlxFrameChunkSize && res == GST_FLOW_OK) {
FlxFrameChunk flxfh;
guchar *chunk;
const guint8 *data;
GstMapInfo map;
chunk = NULL;
data = gst_adapter_map (flxdec->adapter, FlxFrameChunkSize);
memcpy (&flxfh, data, FlxFrameChunkSize);
FLX_FRAME_CHUNK_FIX_ENDIANNESS (&flxfh);
gst_adapter_unmap (flxdec->adapter);
switch (flxfh.id) {
case FLX_FRAME_TYPE:
/* check if we have the complete frame */
if (avail < flxfh.size)
goto need_more_data;
/* flush header */
gst_adapter_flush (flxdec->adapter, FlxFrameChunkSize);
chunk = gst_adapter_take (flxdec->adapter,
flxfh.size - FlxFrameChunkSize);
FLX_FRAME_TYPE_FIX_ENDIANNESS ((FlxFrameType *) chunk);
if (((FlxFrameType *) chunk)->chunks == 0)
break;
/* create 32 bits output frame */
// res = gst_pad_alloc_buffer_and_set_caps (flxdec->srcpad,
// GST_BUFFER_OFFSET_NONE,
// flxdec->size * 4, GST_PAD_CAPS (flxdec->srcpad), &out);
// if (res != GST_FLOW_OK)
// break;
out = gst_buffer_new_and_alloc (flxdec->size * 4);
/* decode chunks */
flx_decode_chunks (flxdec,
((FlxFrameType *) chunk)->chunks,
chunk + FlxFrameTypeSize, flxdec->frame_data);
/* save copy of the current frame for possible delta. */
memcpy (flxdec->delta_data, flxdec->frame_data, flxdec->size);
gst_buffer_map (out, &map, GST_MAP_WRITE);
/* convert current frame. */
flx_colorspace_convert (flxdec->converter, flxdec->frame_data,
map.data);
gst_buffer_unmap (out, &map);
GST_BUFFER_TIMESTAMP (out) = flxdec->next_time;
flxdec->next_time += flxdec->frame_time;
res = gst_pad_push (flxdec->srcpad, out);
break;
default:
/* check if we have the complete frame */
if (avail < flxfh.size)
goto need_more_data;
gst_adapter_flush (flxdec->adapter, flxfh.size);
break;
}
if (chunk)
g_free (chunk);
avail = gst_adapter_available (flxdec->adapter);
}
}
need_more_data:
return res;
/* ERRORS */
wrong_type:
{
GST_ELEMENT_ERROR (flxdec, STREAM, WRONG_TYPE, (NULL),
("not a flx file (type %x)", flxh->type));
gst_object_unref (flxdec);
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_speex_enc_encode (GstSpeexEnc * enc, gboolean flush)
{
gint frame_size = enc->frame_size;
gint bytes = frame_size * 2 * enc->channels;
GstFlowReturn ret = GST_FLOW_OK;
if (flush && gst_adapter_available (enc->adapter) % bytes != 0) {
guint diff = gst_adapter_available (enc->adapter) % bytes;
GstBuffer *buf = gst_buffer_new_and_alloc (diff);
memset (GST_BUFFER_DATA (buf), 0, diff);
gst_adapter_push (enc->adapter, buf);
}
while (gst_adapter_available (enc->adapter) >= bytes) {
gint16 *data;
gint outsize, written;
GstBuffer *outbuf;
data = (gint16 *) gst_adapter_take (enc->adapter, bytes);
enc->samples_in += frame_size;
GST_DEBUG_OBJECT (enc, "encoding %d samples (%d bytes)", frame_size, bytes);
if (enc->channels == 2) {
speex_encode_stereo_int (data, frame_size, &enc->bits);
}
speex_encode_int (enc->state, data, &enc->bits);
g_free (data);
enc->frameno++;
enc->frameno_out++;
if ((enc->frameno % enc->nframes) != 0)
continue;
speex_bits_insert_terminator (&enc->bits);
outsize = speex_bits_nbytes (&enc->bits);
ret = gst_pad_alloc_buffer_and_set_caps (enc->srcpad,
GST_BUFFER_OFFSET_NONE, outsize, GST_PAD_CAPS (enc->srcpad), &outbuf);
if ((GST_FLOW_OK != ret))
goto done;
written = speex_bits_write (&enc->bits,
(gchar *) GST_BUFFER_DATA (outbuf), outsize);
g_assert (written == outsize);
speex_bits_reset (&enc->bits);
GST_BUFFER_TIMESTAMP (outbuf) = enc->start_ts +
gst_util_uint64_scale_int ((enc->frameno_out -
enc->nframes) * frame_size - enc->lookahead, GST_SECOND, enc->rate);
GST_BUFFER_DURATION (outbuf) =
gst_util_uint64_scale_int (frame_size * enc->nframes, GST_SECOND,
enc->rate);
/* set gp time and granulepos; see gst-plugins-base/ext/ogg/README */
GST_BUFFER_OFFSET_END (outbuf) = enc->granulepos_offset +
((enc->frameno_out) * frame_size - enc->lookahead);
GST_BUFFER_OFFSET (outbuf) =
gst_util_uint64_scale_int (GST_BUFFER_OFFSET_END (outbuf), GST_SECOND,
enc->rate);
ret = gst_speex_enc_push_buffer (enc, outbuf);
if ((GST_FLOW_OK != ret) && (GST_FLOW_NOT_LINKED != ret))
goto done;
}
done:
return ret;
}
static GstFlowReturn
gst_gdp_depay_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
GstGDPDepay *this;
GstFlowReturn ret = GST_FLOW_OK;
GstCaps *caps;
GstBuffer *buf;
GstEvent *event;
guint available;
this = GST_GDP_DEPAY (parent);
/* On DISCONT, get rid of accumulated data. We assume a buffer after the
* DISCONT contains (part of) a new valid header, if not we error because we
* lost sync */
if (GST_BUFFER_IS_DISCONT (buffer)) {
gst_adapter_clear (this->adapter);
this->state = GST_GDP_DEPAY_STATE_HEADER;
}
gst_adapter_push (this->adapter, buffer);
while (TRUE) {
switch (this->state) {
case GST_GDP_DEPAY_STATE_HEADER:
{
guint8 *header;
/* collect a complete header, validate and store the header. Figure out
* the payload length and switch to the PAYLOAD state */
available = gst_adapter_available (this->adapter);
if (available < GST_DP_HEADER_LENGTH)
goto done;
GST_LOG_OBJECT (this, "reading GDP header from adapter");
header = gst_adapter_take (this->adapter, GST_DP_HEADER_LENGTH);
if (!gst_dp_validate_header (GST_DP_HEADER_LENGTH, header)) {
g_free (header);
goto header_validate_error;
}
/* store types and payload length. Also store the header, which we need
* to make the payload. */
this->payload_length = gst_dp_header_payload_length (header);
this->payload_type = gst_dp_header_payload_type (header);
/* free previous header and store new one. */
g_free (this->header);
this->header = header;
GST_LOG_OBJECT (this,
"read GDP header, payload size %d, payload type %d, switching to state PAYLOAD",
this->payload_length, this->payload_type);
this->state = GST_GDP_DEPAY_STATE_PAYLOAD;
break;
}
case GST_GDP_DEPAY_STATE_PAYLOAD:
{
/* in this state we wait for all the payload data to be available in the
* adapter. Then we switch to the state where we actually process the
* payload. */
available = gst_adapter_available (this->adapter);
if (available < this->payload_length)
goto done;
/* change state based on type */
if (this->payload_type == GST_DP_PAYLOAD_BUFFER) {
GST_LOG_OBJECT (this, "switching to state BUFFER");
this->state = GST_GDP_DEPAY_STATE_BUFFER;
} else if (this->payload_type == GST_DP_PAYLOAD_CAPS) {
GST_LOG_OBJECT (this, "switching to state CAPS");
this->state = GST_GDP_DEPAY_STATE_CAPS;
} else if (this->payload_type >= GST_DP_PAYLOAD_EVENT_NONE) {
GST_LOG_OBJECT (this, "switching to state EVENT");
this->state = GST_GDP_DEPAY_STATE_EVENT;
} else {
goto wrong_type;
}
if (this->payload_length) {
const guint8 *data;
gboolean res;
data = gst_adapter_map (this->adapter, this->payload_length);
res = gst_dp_validate_payload (GST_DP_HEADER_LENGTH, this->header,
data);
gst_adapter_unmap (this->adapter);
if (!res)
goto payload_validate_error;
}
break;
}
case GST_GDP_DEPAY_STATE_BUFFER:
{
/* if we receive a buffer without caps first, we error out */
if (!this->caps)
goto no_caps;
GST_LOG_OBJECT (this, "reading GDP buffer from adapter");
buf = gst_dp_buffer_from_header (GST_DP_HEADER_LENGTH, this->header);
if (!buf)
goto buffer_failed;
/* now take the payload if there is any */
if (this->payload_length > 0) {
GstMapInfo map;
gst_buffer_map (buf, &map, GST_MAP_WRITE);
gst_adapter_copy (this->adapter, map.data, 0, this->payload_length);
gst_buffer_unmap (buf, &map);
gst_adapter_flush (this->adapter, this->payload_length);
}
/* set caps and push */
GST_LOG_OBJECT (this, "deserialized buffer %p, pushing, timestamp %"
GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT
", offset %" G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT
", size %" G_GSIZE_FORMAT ", flags 0x%x",
buf,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf),
gst_buffer_get_size (buf), GST_BUFFER_FLAGS (buf));
ret = gst_pad_push (this->srcpad, buf);
if (ret != GST_FLOW_OK)
goto push_error;
GST_LOG_OBJECT (this, "switching to state HEADER");
this->state = GST_GDP_DEPAY_STATE_HEADER;
break;
}
case GST_GDP_DEPAY_STATE_CAPS:
{
guint8 *payload;
/* take the payload of the caps */
GST_LOG_OBJECT (this, "reading GDP caps from adapter");
payload = gst_adapter_take (this->adapter, this->payload_length);
caps = gst_dp_caps_from_packet (GST_DP_HEADER_LENGTH, this->header,
payload);
g_free (payload);
if (!caps)
goto caps_failed;
GST_DEBUG_OBJECT (this, "deserialized caps %" GST_PTR_FORMAT, caps);
gst_caps_replace (&(this->caps), caps);
gst_pad_set_caps (this->srcpad, caps);
/* drop the creation ref we still have */
gst_caps_unref (caps);
GST_LOG_OBJECT (this, "switching to state HEADER");
this->state = GST_GDP_DEPAY_STATE_HEADER;
break;
}
case GST_GDP_DEPAY_STATE_EVENT:
{
guint8 *payload;
GST_LOG_OBJECT (this, "reading GDP event from adapter");
/* adapter doesn't like 0 length payload */
if (this->payload_length > 0)
payload = gst_adapter_take (this->adapter, this->payload_length);
else
payload = NULL;
event = gst_dp_event_from_packet (GST_DP_HEADER_LENGTH, this->header,
payload);
g_free (payload);
if (!event)
goto event_failed;
GST_DEBUG_OBJECT (this, "deserialized event %p of type %s, pushing",
event, gst_event_type_get_name (event->type));
gst_pad_push_event (this->srcpad, event);
GST_LOG_OBJECT (this, "switching to state HEADER");
this->state = GST_GDP_DEPAY_STATE_HEADER;
break;
}
}
}
done:
return ret;
/* ERRORS */
header_validate_error:
{
GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL),
("GDP packet header does not validate"));
ret = GST_FLOW_ERROR;
goto done;
}
payload_validate_error:
{
GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL),
("GDP packet payload does not validate"));
ret = GST_FLOW_ERROR;
goto done;
}
wrong_type:
{
GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL),
("GDP packet header is of wrong type"));
ret = GST_FLOW_ERROR;
goto done;
}
no_caps:
{
GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL),
("Received a buffer without first receiving caps"));
ret = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
buffer_failed:
{
GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL),
("could not create buffer from GDP packet"));
ret = GST_FLOW_ERROR;
goto done;
}
push_error:
{
GST_WARNING_OBJECT (this, "pushing depayloaded buffer returned %d", ret);
goto done;
}
caps_failed:
{
GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL),
("could not create caps from GDP packet"));
ret = GST_FLOW_ERROR;
goto done;
}
event_failed:
{
GST_ELEMENT_ERROR (this, STREAM, DECODE, (NULL),
("could not create event from GDP packet"));
ret = GST_FLOW_ERROR;
goto done;
}
}
static GstFlowReturn
gst_siren_enc_chain (GstPad * pad, GstBuffer * buf)
{
GstSirenEnc *enc;
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *out_buf;
guint8 *in_data, *out_data;
guint8 *to_free = NULL;
guint i, size, num_frames;
gint out_size, in_size;
gint encode_ret;
gboolean discont;
GstClockTime timestamp;
guint64 distance;
GstCaps *outcaps;
enc = GST_SIREN_ENC (GST_PAD_PARENT (pad));
discont = GST_BUFFER_IS_DISCONT (buf);
if (discont) {
GST_DEBUG_OBJECT (enc, "received DISCONT, flush adapter");
gst_adapter_clear (enc->adapter);
enc->discont = TRUE;
}
gst_adapter_push (enc->adapter, buf);
size = gst_adapter_available (enc->adapter);
GST_LOG_OBJECT (enc, "Received buffer of size %d with adapter of size : %d",
GST_BUFFER_SIZE (buf), size);
/* we need to process 640 input bytes to produce 40 output bytes */
/* calculate the amount of frames we will handle */
num_frames = size / 640;
/* no frames, wait some more */
if (num_frames == 0)
goto done;
/* this is the input/output size */
in_size = num_frames * 640;
out_size = num_frames * 40;
GST_LOG_OBJECT (enc, "we have %u frames, %u in, %u out", num_frames, in_size,
out_size);
/* set output caps when needed */
if ((outcaps = GST_PAD_CAPS (enc->srcpad)) == NULL) {
outcaps = gst_static_pad_template_get_caps (&srctemplate);
gst_pad_set_caps (enc->srcpad, outcaps);
gst_caps_unref (outcaps);
}
/* get a buffer */
ret = gst_pad_alloc_buffer_and_set_caps (enc->srcpad, -1,
out_size, outcaps, &out_buf);
if (ret != GST_FLOW_OK)
goto alloc_failed;
/* get the timestamp for the output buffer */
timestamp = gst_adapter_prev_timestamp (enc->adapter, &distance);
/* add the amount of time taken by the distance */
if (timestamp != -1)
timestamp += gst_util_uint64_scale_int (distance / 2, GST_SECOND, 16000);
GST_LOG_OBJECT (enc,
"timestamp %" GST_TIME_FORMAT ", distance %" G_GUINT64_FORMAT,
GST_TIME_ARGS (timestamp), distance);
/* get the input data for all the frames */
to_free = in_data = gst_adapter_take (enc->adapter, in_size);
out_data = GST_BUFFER_DATA (out_buf);
for (i = 0; i < num_frames; i++) {
GST_LOG_OBJECT (enc, "Encoding frame %u/%u", i, num_frames);
/* encode 640 input bytes to 40 output bytes */
encode_ret = Siren7_EncodeFrame (enc->encoder, in_data, out_data);
if (encode_ret != 0)
goto encode_error;
/* move to next frame */
out_data += 40;
in_data += 640;
}
GST_LOG_OBJECT (enc, "Finished encoding");
/* mark discont */
if (enc->discont) {
GST_BUFFER_FLAG_SET (out_buf, GST_BUFFER_FLAG_DISCONT);
enc->discont = FALSE;
}
GST_BUFFER_TIMESTAMP (out_buf) = timestamp;
GST_BUFFER_DURATION (out_buf) = num_frames * FRAME_DURATION;
ret = gst_pad_push (enc->srcpad, out_buf);
done:
if (to_free)
g_free (to_free);
return ret;
/* ERRORS */
alloc_failed:
{
GST_DEBUG_OBJECT (enc, "failed to pad_alloc buffer: %d (%s)", ret,
gst_flow_get_name (ret));
goto done;
}
encode_error:
{
GST_ELEMENT_ERROR (enc, STREAM, ENCODE, (NULL),
("Error encoding frame: %d", encode_ret));
ret = GST_FLOW_ERROR;
gst_buffer_unref (out_buf);
goto done;
}
}
static GstFlowReturn
gst_midi_parse_parse_song (GstMidiParse * midiparse)
{
GstCaps *outcaps;
guint8 *data;
guint size, offset, length;
gchar *stream_id;
GST_DEBUG_OBJECT (midiparse, "Parsing song");
gst_segment_init (&midiparse->segment, GST_FORMAT_TIME);
midiparse->segment.duration = 0;
midiparse->pulse = 0;
size = gst_adapter_available (midiparse->adapter);
data = gst_adapter_take (midiparse->adapter, size);
midiparse->data = data;
midiparse->tempo = DEFAULT_TEMPO;
if (!find_midi_chunk (midiparse, data, size, &offset, &length))
goto invalid_format;
while (length) {
guint consumed;
consumed = gst_midi_parse_chunk (midiparse, &data[offset], length);
if (consumed == 0)
goto short_file;
offset += consumed;
length -= consumed;
}
GST_DEBUG_OBJECT (midiparse, "song duration %" GST_TIME_FORMAT,
GST_TIME_ARGS (midiparse->segment.duration));
stream_id = gst_pad_create_stream_id (midiparse->srcpad, GST_ELEMENT_CAST (midiparse), NULL);
gst_pad_push_event (midiparse->srcpad, gst_event_new_stream_start (stream_id));
g_free (stream_id);
outcaps = gst_pad_get_pad_template_caps (midiparse->srcpad);
gst_pad_set_caps (midiparse->srcpad, outcaps);
gst_caps_unref (outcaps);
midiparse->segment_pending = TRUE;
midiparse->discont = TRUE;
GST_DEBUG_OBJECT (midiparse, "Parsing song done");
return GST_FLOW_OK;
/* ERRORS */
short_file:
{
GST_ERROR_OBJECT (midiparse, "not enough data");
return GST_FLOW_ERROR;
}
invalid_format:
{
GST_ERROR_OBJECT (midiparse, "invalid format");
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_amrnbenc_chain (GstPad * pad, GstBuffer * buffer)
{
GstAmrnbEnc *amrnbenc;
GstFlowReturn ret;
amrnbenc = GST_AMRNBENC (GST_PAD_PARENT (pad));
g_return_val_if_fail (amrnbenc->handle, GST_FLOW_WRONG_STATE);
if (amrnbenc->rate == 0 || amrnbenc->channels == 0)
goto not_negotiated;
/* discontinuity clears adapter, FIXME, maybe we can set some
* encoder flag to mask the discont. */
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
gst_adapter_clear (amrnbenc->adapter);
amrnbenc->ts = 0;
}
/* take latest timestamp, FIXME timestamp is the one of the
* first buffer in the adapter. */
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
amrnbenc->ts = GST_BUFFER_TIMESTAMP (buffer);
ret = GST_FLOW_OK;
gst_adapter_push (amrnbenc->adapter, buffer);
/* Collect samples until we have enough for an output frame */
while (gst_adapter_available (amrnbenc->adapter) >= 320) {
GstBuffer *out;
guint8 *data;
gint outsize;
/* get output, max size is 32 */
out = gst_buffer_new_and_alloc (32);
GST_BUFFER_DURATION (out) = amrnbenc->duration;
GST_BUFFER_TIMESTAMP (out) = amrnbenc->ts;
if (amrnbenc->ts != -1)
amrnbenc->ts += amrnbenc->duration;
gst_buffer_set_caps (out, GST_PAD_CAPS (amrnbenc->srcpad));
/* The AMR encoder actually writes into the source data buffers it gets */
data = gst_adapter_take (amrnbenc->adapter, 320);
/* encode */
outsize =
Encoder_Interface_Encode (amrnbenc->handle, amrnbenc->bandmode,
(short *) data, (guint8 *) GST_BUFFER_DATA (out), 0);
g_free (data);
GST_BUFFER_SIZE (out) = outsize;
/* play */
if ((ret = gst_pad_push (amrnbenc->srcpad, out)) != GST_FLOW_OK)
break;
}
return ret;
/* ERRORS */
not_negotiated:
{
GST_ELEMENT_ERROR (amrnbenc, STREAM, TYPE_NOT_FOUND,
(NULL), ("unknown type"));
return GST_FLOW_NOT_NEGOTIATED;
}
}
