/**
* gst_mpegts_descriptor_parse_logical_channel:
* @descriptor: a %GST_MTS_DESC_DTG_LOGICAL_CHANNEL #GstMpegtsDescriptor
* @res: (out) (transfer none): the #GstMpegtsLogicalChannelDescriptor to fill
*
* Extracts the logical channels from @descriptor.
*
* Returns: %TRUE if parsing succeeded, else %FALSE.
*/
gboolean
gst_mpegts_descriptor_parse_logical_channel (const GstMpegtsDescriptor *
descriptor, GstMpegtsLogicalChannelDescriptor * res)
{
guint i;
guint8 *data;
g_return_val_if_fail (descriptor != NULL && res != NULL, FALSE);
/* This descriptor loop can be empty, no size check required */
__common_desc_check_base (descriptor, GST_MTS_DESC_DTG_LOGICAL_CHANNEL,
FALSE);
data = (guint8 *) descriptor->data + 2;
res->nb_channels = descriptor->length / 4;
for (i = 0; i < res->nb_channels; i++) {
res->channels[i].service_id = GST_READ_UINT16_BE (data);
data += 2;
res->channels[i].visible_service = *data >> 7;
res->channels[i].logical_channel_number =
GST_READ_UINT16_BE (data) & 0x03ff;
data += 2;
}
return TRUE;
}
/**
* gst_rtp_buffer_get_extension_data:
* @buffer: the buffer
* @bits: location for result bits
* @data: location for data
* @wordlen: location for length of @data in 32 bits words
*
* Get the extension data. @bits will contain the extension 16 bits of custom
* data. @data will point to the data in the extension and @wordlen will contain
* the length of @data in 32 bits words.
*
* If @buffer did not contain an extension, this function will return %FALSE
* with @bits, @data and @wordlen unchanged.
*
* Returns: TRUE if @buffer had the extension bit set.
*
* Since: 0.10.15
*/
gboolean
gst_rtp_buffer_get_extension_data (GstBuffer * buffer, guint16 * bits,
gpointer * data, guint * wordlen)
{
guint len;
guint8 *pdata;
pdata = GST_BUFFER_DATA (buffer);
if (!GST_RTP_HEADER_EXTENSION (pdata))
return FALSE;
/* move to the extension */
len = GST_RTP_HEADER_LEN + GST_RTP_HEADER_CSRC_SIZE (pdata);
pdata += len;
if (bits)
*bits = GST_READ_UINT16_BE (pdata);
if (wordlen)
*wordlen = GST_READ_UINT16_BE (pdata + 2);
if (data)
*data = pdata + 4;
return TRUE;
}
EXPORT_C
#endif
gboolean
gst_rtp_buffer_get_extension_data (GstBuffer * buffer, guint16 * bits,
gpointer * data, guint * wordlen)
{
guint len;
guint8 *pdata;
g_return_val_if_fail (GST_IS_BUFFER (buffer), FALSE);
g_return_val_if_fail (GST_BUFFER_DATA (buffer) != NULL, FALSE);
if (!GST_RTP_HEADER_EXTENSION (buffer))
return FALSE;
/* move to the extension */
len = GST_RTP_HEADER_LEN + GST_RTP_HEADER_CSRC_SIZE (buffer);
pdata = GST_BUFFER_DATA (buffer) + len;
if (bits)
*bits = GST_READ_UINT16_BE (pdata);
if (wordlen)
*wordlen = GST_READ_UINT16_BE (pdata + 2);
if (data)
*data = pdata + 4;
return TRUE;
}
gboolean
mxf_product_version_parse (MXFProductVersion * product_version,
const guint8 * data, guint size)
{
g_return_val_if_fail (product_version != NULL, FALSE);
g_return_val_if_fail (data != NULL, FALSE);
memset (product_version, 0, sizeof (MXFProductVersion));
if (size < 9)
return FALSE;
product_version->major = GST_READ_UINT16_BE (data);
product_version->minor = GST_READ_UINT16_BE (data + 2);
product_version->patch = GST_READ_UINT16_BE (data + 4);
product_version->build = GST_READ_UINT16_BE (data + 6);
/* Avid writes a 9 byte product version */
if (size == 9)
product_version->release = GST_READ_UINT8 (data + 8);
else
product_version->release = GST_READ_UINT16_BE (data + 8);
return TRUE;
}
gboolean
gst_mpegts_descriptor_parse_ca (GstMpegtsDescriptor * descriptor,
guint16 * ca_system_id, guint16 * ca_pid,
const guint8 ** private_data, gsize * private_data_size)
{
guint8 *data;
g_return_val_if_fail (descriptor != NULL && ca_system_id != NULL
&& ca_pid != NULL, FALSE);
/* The smallest CA is 4 bytes (though not having any private data
* sounds a bit ... weird) */
__common_desc_checks (descriptor, GST_MTS_DESC_CA, 4, FALSE);
data = (guint8 *) descriptor->data + 2;
*ca_system_id = GST_READ_UINT16_BE (data);
data += 2;
*ca_pid = GST_READ_UINT16_BE (data) & 0x1fff;
data += 2;
if (private_data && private_data_size) {
*private_data = data;
*private_data_size = descriptor->length - 4;
}
return TRUE;
}
static void
rtp_jpeg_do_packet_loss (gdouble prob, gint num_expected)
{
GstHarness *h;
gboolean eos = FALSE;
gchar *s;
guint i, buffer_count;
s = g_strdup_printf ("videotestsrc pattern=ball num-buffers=100 ! "
"jpegenc quality=50 ! rtpjpegpay ! identity drop-probability=%g ! "
"rtpjpegdepay", prob);
GST_INFO ("running pipeline %s", s);
h = gst_harness_new_parse (s);
g_free (s);
gst_harness_play (h);
do {
GstEvent *event;
event = gst_harness_pull_event (h);
eos = (GST_EVENT_TYPE (event) == GST_EVENT_EOS);
gst_event_unref (event);
} while (!eos);
buffer_count = gst_harness_buffers_received (h);
GST_INFO ("Got %u buffers", buffer_count);
if (num_expected >= 0) {
fail_unless_equals_int (num_expected, buffer_count);
}
for (i = 0; i < buffer_count; ++i) {
GstBuffer *buf;
GstMapInfo map;
guint16 soi, eoi;
buf = gst_harness_pull (h);
fail_unless (buf != NULL);
fail_unless (gst_buffer_map (buf, &map, GST_MAP_READ));
GST_MEMDUMP ("jpeg frame", map.data, map.size);
fail_unless (map.size > 4);
soi = GST_READ_UINT16_BE (map.data);
fail_unless (soi == 0xffd8, "expected JPEG frame start FFD8 not %02X", soi);
eoi = GST_READ_UINT16_BE (map.data + map.size - 2);
fail_unless (eoi == 0xffd9, "expected JPEG frame end FFD9 not %02X", eoi);
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
}
gst_harness_teardown (h);
}
static gboolean
parse_MThd (GstMidiParse * midiparse, guint8 * data, guint size)
{
guint16 format, ntracks, division;
gboolean multitrack;
format = GST_READ_UINT16_BE (data);
switch (format) {
case 0:
multitrack = FALSE;
break;
case 1:
multitrack = TRUE;
break;
default:
case 2:
goto invalid_format;
}
ntracks = GST_READ_UINT16_BE (data + 2);
if (ntracks > 1 && !multitrack)
goto invalid_tracks;
division = GST_READ_UINT16_BE (data + 4);
if (division & 0x8000)
goto invalid_division;
GST_DEBUG_OBJECT (midiparse, "format %u, tracks %u, division %u",
format, ntracks, division);
midiparse->ntracks = ntracks;
midiparse->division = division;
return TRUE;
invalid_format:
{
GST_ERROR_OBJECT (midiparse, "unsupported midi format %u", format);
return FALSE;
}
invalid_tracks:
{
GST_ERROR_OBJECT (midiparse, "invalid number of tracks %u for format %u",
ntracks, format);
return FALSE;
}
invalid_division:
{
GST_ERROR_OBJECT (midiparse, "unsupported division");
return FALSE;
}
}
guint16
gst_rdt_packet_data_get_stream_id (GstRDTPacket * packet)
{
guint16 result;
guint header;
gboolean length_included_flag;
guint8 *bufdata;
g_return_val_if_fail (packet != NULL, 0);
g_return_val_if_fail (GST_RDT_IS_DATA_TYPE (packet->type), 0);
bufdata = GST_BUFFER_DATA (packet->buffer);
header = packet->offset;
length_included_flag = (bufdata[header] & 0x80) == 0x80;
result = (bufdata[header] & 0x3e) >> 1;
if (result == 31) {
/* skip seq_no and header bits */
header += 3;
if (length_included_flag) {
/* skip length */
header += 2;
}
/* skip asm_rule_number and timestamp */
header += 5;
/* stream_id_expansion */
result = GST_READ_UINT16_BE (&bufdata[header]);
}
return result;
}
static gboolean
flv_script_data_read_string(FlvScriptDataReader* reader, gchar** dest, gboolean longString)
{
gsize length;
/* Read length of string */
if ((reader->position + (longString ? 4 : 2)) > reader->end)
return FALSE;
if (longString) {
length = GST_READ_UINT32_BE(reader->position);
reader->position += 4;
} else {
length = GST_READ_UINT16_BE(reader->position);
reader->position += 2;
}
/* Alloc buffer and copy string into it */
if ((reader->position + length) > reader->end)
return FALSE;
if (length >= G_MAXSIZE - 1)
return FALSE;
*dest = g_malloc(length + 1);
if (*dest == NULL)
return FALSE;
memcpy(*dest, reader->position, length);
(*dest)[length] = 0;
reader->position += length;
return TRUE;
}
static void
check_rtp_buffer (GstClockTime ts, GstClockTime duration, gboolean start,
gboolean end, guint rtpts, guint ssrc, guint volume, guint number,
guint rtpduration)
{
GstBuffer *buffer;
GstRTPBuffer rtpbuffer = GST_RTP_BUFFER_INIT;
gchar *payload;
g_mutex_lock (&check_mutex);
while (buffers == NULL)
g_cond_wait (&check_cond, &check_mutex);
g_mutex_unlock (&check_mutex);
fail_unless (buffers != NULL);
buffer = buffers->data;
buffers = g_list_delete_link (buffers, buffers);
fail_unless (GST_BUFFER_PTS (buffer) == ts);
fail_unless (GST_BUFFER_DURATION (buffer) == duration);
fail_unless (gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtpbuffer));
fail_unless (gst_rtp_buffer_get_marker (&rtpbuffer) == start);
fail_unless (gst_rtp_buffer_get_timestamp (&rtpbuffer) == rtpts);
payload = gst_rtp_buffer_get_payload (&rtpbuffer);
fail_unless (payload[0] == number);
fail_unless ((payload[1] & 0x7F) == volume);
fail_unless (! !(payload[1] & 0x80) == end);
fail_unless (GST_READ_UINT16_BE (payload + 2) == rtpduration);
gst_rtp_buffer_unmap (&rtpbuffer);
gst_buffer_unref (buffer);
}
static gint
deserialize_orientation (GstExifReader * exif_reader,
GstByteReader * reader, const GstExifTagMatch * exiftag,
GstExifTagData * tagdata)
{
gint ret = 1;
const gchar *str = NULL;
gint value;
GST_LOG ("Starting to parse %s tag in exif 0x%x", exiftag->gst_tag,
exiftag->exif_tag);
/* validate tag */
if (tagdata->tag_type != EXIF_TYPE_SHORT || tagdata->count != 1) {
GST_WARNING ("Orientation tag has unexpected type/count");
return ret;
}
if (exif_reader->byte_order == G_LITTLE_ENDIAN) {
value = GST_READ_UINT16_LE (tagdata->offset_as_data);
} else {
value = GST_READ_UINT16_BE (tagdata->offset_as_data);
}
str = gst_tag_image_orientation_from_exif_value (value);
if (str == NULL) {
GST_WARNING ("Invalid value for exif orientation tag: %d", value);
return ret;
}
gst_tag_list_add (exif_reader->taglist, GST_TAG_MERGE_REPLACE,
exiftag->gst_tag, str, NULL);
return ret;
}
static gboolean
gst_irtsp_parse_check_valid_frame (GstBaseParse * parse,
GstBaseParseFrame * frame, guint * framesize, gint * skipsize)
{
GstIRTSPParse *IRTSPParse = GST_IRTSP_PARSE (parse);
GstBuffer *buf = frame->buffer;
GstByteReader reader = GST_BYTE_READER_INIT_FROM_BUFFER (buf);
gint off;
if (G_UNLIKELY (GST_BUFFER_SIZE (buf) < 4))
return FALSE;
off = gst_byte_reader_masked_scan_uint32 (&reader, 0xffff0000,
0x24000000 + (IRTSPParse->channel_id << 16), 0, GST_BUFFER_SIZE (buf));
GST_LOG_OBJECT (parse, "possible sync at buffer offset %d", off);
/* didn't find anything that looks like a sync word, skip */
if (off < 0) {
*skipsize = GST_BUFFER_SIZE (buf) - 3;
return FALSE;
}
/* possible frame header, but not at offset 0? skip bytes before sync */
if (off > 0) {
*skipsize = off;
return FALSE;
}
*framesize = GST_READ_UINT16_BE (GST_BUFFER_DATA (frame->buffer) + 2) + 4;
GST_LOG_OBJECT (parse, "got frame size %d", *framesize);
return TRUE;
}
/* caller must pass buffer with full ID3 tag */
ID3TagsResult
id3demux_read_id3v2_tag (GstBuffer * buffer, guint * id3v2_size,
GstTagList ** tags)
{
guint8 *data, *uu_data = NULL;
guint read_size;
ID3TagsWorking work;
guint8 flags;
ID3TagsResult result;
guint16 version;
read_size = id3demux_calc_id3v2_tag_size (buffer);
if (id3v2_size)
*id3v2_size = read_size;
/* Ignore tag if it has no frames attached, but skip the header then */
if (read_size <= ID3V2_HDR_SIZE)
return ID3TAGS_BROKEN_TAG;
data = GST_BUFFER_DATA (buffer);
/* Read the version */
version = GST_READ_UINT16_BE (data + 3);
/* Read the flags */
flags = data[5];
/* Validate the version. At the moment, we only support up to 2.4.0 */
if (ID3V2_VER_MAJOR (version) > 4 || ID3V2_VER_MINOR (version) > 0) {
GST_WARNING ("ID3v2 tag is from revision 2.%d.%d, "
"but decoder only supports 2.%d.%d. Ignoring as per spec.",
version >> 8, version & 0xff, ID3V2_VERSION >> 8, ID3V2_VERSION & 0xff);
return ID3TAGS_READ_TAG;
}
static GstFlowReturn
test_mpeg_audio_parse_handle_frame (GstBaseParse * parse,
GstBaseParseFrame * frame, gint * skipsize)
{
guint8 data[2];
gst_buffer_extract (frame->buffer, 0, data, 2);
if ((GST_READ_UINT16_BE (data) & 0xffe0) == 0xffe0) {
if (GST_BUFFER_OFFSET (frame->buffer) == 0) {
GstCaps *caps;
caps = gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, 1,
"mpegaudioversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, 3,
"rate", G_TYPE_INT, 44100, "channels", G_TYPE_INT, 2, NULL);
gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (parse), caps);
gst_caps_unref (caps);
}
/* this framesize is hard-coded for ../test.mp3 */
return gst_base_parse_finish_frame (parse, frame, 1045);
} else {
*skipsize = 1;
return GST_FLOW_OK;
}
}
static int
_parse_u16 (AmfParser * parser)
{
int x;
x = GST_READ_UINT16_BE (parser->data + parser->offset);
parser->offset += 2;
return x;
}
/**
* gst_audio_format_fill_silence:
* @info: a #GstAudioFormatInfo
* @dest: (array length=length) (element-type guint8): a destination
* to fill
* @length: the length to fill
*
* Fill @length bytes in @dest with silence samples for @info.
*/
void
gst_audio_format_fill_silence (const GstAudioFormatInfo * info,
gpointer dest, gsize length)
{
guint8 *dptr = dest;
g_return_if_fail (info != NULL);
g_return_if_fail (dest != NULL);
if (info->flags & GST_AUDIO_FORMAT_FLAG_FLOAT ||
info->flags & GST_AUDIO_FORMAT_FLAG_SIGNED) {
/* float or signed always 0 */
orc_memset (dest, 0, length);
} else {
gint i, j, bps = info->width >> 3;
switch (bps) {
case 1:
orc_memset (dest, info->silence[0], length);
break;
case 2:{
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
guint16 silence = GST_READ_UINT16_LE (info->silence);
#else
guint16 silence = GST_READ_UINT16_BE (info->silence);
#endif
audio_orc_splat_u16 (dest, silence, length / bps);
break;
}
case 4:{
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
guint32 silence = GST_READ_UINT32_LE (info->silence);
#else
guint32 silence = GST_READ_UINT32_BE (info->silence);
#endif
audio_orc_splat_u32 (dest, silence, length / bps);
break;
}
case 8:{
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
guint64 silence = GST_READ_UINT64_LE (info->silence);
#else
guint64 silence = GST_READ_UINT64_BE (info->silence);
#endif
audio_orc_splat_u64 (dest, silence, length / bps);
break;
}
default:
for (i = 0; i < length; i += bps) {
for (j = 0; j < bps; j++)
*dptr++ = info->silence[j];
}
break;
}
}
}
static gboolean
gst_aiff_parse_parse_comm (GstAiffParse * aiff, GstBuffer * buf)
{
guint8 *data;
int size;
if (aiff->is_aifc)
size = 22;
else
size = 18;
if (GST_BUFFER_SIZE (buf) < size) {
GST_WARNING_OBJECT (aiff, "COMM chunk too short, cannot parse header");
return FALSE;
}
data = GST_BUFFER_DATA (buf);
aiff->channels = GST_READ_UINT16_BE (data);
aiff->total_frames = GST_READ_UINT32_BE (data + 2);
aiff->depth = GST_READ_UINT16_BE (data + 6);
aiff->width = GST_ROUND_UP_8 (aiff->depth);
aiff->rate = (int) gst_aiff_parse_read_IEEE80 (data + 8);
if (aiff->is_aifc) {
/* We only support the 'trivial' uncompressed AIFC, but it can be
* either big or little endian */
if (GST_READ_UINT32_LE (data + 18) == GST_MAKE_FOURCC ('N', 'O', 'N', 'E'))
aiff->endianness = G_BIG_ENDIAN;
else if (GST_READ_UINT32_LE (data + 18) ==
GST_MAKE_FOURCC ('s', 'o', 'w', 't'))
aiff->endianness = G_LITTLE_ENDIAN;
else {
GST_WARNING_OBJECT (aiff, "Unsupported compression in AIFC "
"file: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (GST_READ_UINT32_LE (data + 18)));
return FALSE;
}
} else
aiff->endianness = G_BIG_ENDIAN;
return TRUE;
}
gboolean
mxf_local_tag_parse (const guint8 * data, guint size, guint16 * tag,
guint16 * tag_size, const guint8 ** tag_data)
{
g_return_val_if_fail (data != NULL, FALSE);
if (size < 4)
return FALSE;
*tag = GST_READ_UINT16_BE (data);
*tag_size = GST_READ_UINT16_BE (data + 2);
if (size < 4 + *tag_size)
return FALSE;
*tag_data = data + 4;
return TRUE;
}
static int
parse_set_window (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
guint16 len)
{
SpuState *state = &dvdspu->spu_state;
guint8 *end = payload + len;
guint8 win_count, win_id G_GNUC_UNUSED;
gint i;
if (payload + 1 > end)
return 0;
dump_bytes (payload, len);
win_count = payload[0];
payload++;
for (i = 0; i < win_count; i++) {
if (payload + 9 > end)
return 0;
/* FIXME: Store each window ID separately into an array */
win_id = payload[0];
state->pgs.win_x = GST_READ_UINT16_BE (payload + 1);
state->pgs.win_y = GST_READ_UINT16_BE (payload + 3);
state->pgs.win_w = GST_READ_UINT16_BE (payload + 5);
state->pgs.win_h = GST_READ_UINT16_BE (payload + 7);
payload += 9;
PGS_DUMP ("Win ID %u x %d y %d w %d h %d\n",
win_id, state->pgs.win_x, state->pgs.win_y, state->pgs.win_w,
state->pgs.win_h);
}
if (payload != end) {
GST_ERROR ("PGS Set Window: %" G_GSSIZE_FORMAT " bytes not consumed",
(gssize) (end - payload));
dump_bytes (payload, end - payload);
}
return 0;
}
static GstFlowReturn
gst_dvd_sub_parse_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstDvdSubParse *parse = GST_DVD_SUB_PARSE (parent);
GstAdapter *adapter;
GstBuffer *outbuf = NULL;
GstFlowReturn ret = GST_FLOW_OK;
adapter = parse->adapter;
GST_LOG_OBJECT (parse, "%" G_GSIZE_FORMAT " bytes, ts: %" GST_TIME_FORMAT,
gst_buffer_get_size (buf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
gst_adapter_push (adapter, buf);
if (!parse->needed) {
guint8 data[2];
gst_adapter_copy (adapter, data, 0, 2);
parse->needed = GST_READ_UINT16_BE (data);
}
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
if (GST_CLOCK_TIME_IS_VALID (parse->stamp))
/* normally, we expect only the first fragment to carry a timestamp */
GST_WARNING_OBJECT (parse, "Received more timestamps than expected.");
else
parse->stamp = GST_BUFFER_TIMESTAMP (buf);
}
if (parse->needed) {
guint av;
av = gst_adapter_available (adapter);
if (av >= parse->needed) {
if (av > parse->needed) {
/* normally, we expect several fragment, boundary aligned */
GST_WARNING_OBJECT (parse, "Unexpected: needed %d, "
"but more (%d) is available.", parse->needed, av);
}
outbuf = gst_adapter_take_buffer (adapter, parse->needed);
/* decorate buffer */
GST_BUFFER_TIMESTAMP (outbuf) = parse->stamp;
/* reset state */
parse->stamp = GST_CLOCK_TIME_NONE;
parse->needed = 0;
/* and send along */
ret = gst_pad_push (parse->srcpad, outbuf);
}
}
return ret;
}
static void
check_rgb_buf (const guint8 * pixels, guint32 r_mask, guint32 g_mask,
guint32 b_mask, guint32 a_mask, guint8 r_expected, guint8 g_expected,
guint8 b_expected, guint bpp, guint depth)
{
guint32 pixel, red, green, blue, alpha;
switch (bpp) {
case 32:
pixel = GST_READ_UINT32_BE (pixels);
break;
case 24:
pixel = (GST_READ_UINT8 (pixels) << 16) |
(GST_READ_UINT8 (pixels + 1) << 8) |
(GST_READ_UINT8 (pixels + 2) << 0);
break;
case 16:
if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
pixel = GST_READ_UINT16_LE (pixels);
else
pixel = GST_READ_UINT16_BE (pixels);
break;
default:
g_return_if_reached ();
}
red = right_shift_colour (r_mask, pixel);
green = right_shift_colour (g_mask, pixel);
blue = right_shift_colour (b_mask, pixel);
alpha = right_shift_colour (a_mask, pixel);
/* can't enable this by default, valgrind will complain about accessing
* uninitialised memory for the depth=24,bpp=32 formats ... */
/* GST_LOG ("pixels: 0x%02x 0x%02x 0x%02x 0x%02x => pixel = 0x%08x",
pixels[0], (guint) pixels[1], pixels[2], pixels[3], pixel); */
/* fix up the mask (for rgb15/16) */
if (bpp == 16) {
r_expected = fix_expected_colour (r_mask, r_expected);
g_expected = fix_expected_colour (g_mask, g_expected);
b_expected = fix_expected_colour (b_mask, b_expected);
}
fail_unless (red == r_expected, "RED: expected 0x%02x, found 0x%02x",
r_expected, red);
fail_unless (green == g_expected, "GREEN: expected 0x%02x, found 0x%02x",
g_expected, green);
fail_unless (blue == b_expected, "BLUE: expected 0x%02x, found 0x%02x",
b_expected, blue);
fail_unless (a_mask == 0 || alpha != 0); /* better than nothing */
}
/**
* gst_rtp_buffer_get_header_len:
* @buffer: the buffer
*
* Return the total length of the header in @buffer. This include the length of
* the fixed header, the CSRC list and the extension header.
*
* Returns: The total length of the header in @buffer.
*/
guint
gst_rtp_buffer_get_header_len (GstBuffer * buffer)
{
guint len;
guint8 *data;
data = GST_BUFFER_DATA (buffer);
len = GST_RTP_HEADER_LEN + GST_RTP_HEADER_CSRC_SIZE (data);
if (GST_RTP_HEADER_EXTENSION (data))
len += GST_READ_UINT16_BE (data + len + 2) * 4 + 4;
return len;
}
gint
gstspu_exec_pgs_buffer (GstDVDSpu * dvdspu, GstBuffer * buf)
{
GstMapInfo map;
guint8 *pos, *end;
guint8 type;
guint16 packet_len;
gst_buffer_map (buf, &map, GST_MAP_READ);
pos = map.data;
end = pos + map.size;
/* Need at least 3 bytes */
if (pos + 3 > end) {
PGS_DUMP ("Not enough bytes to be a PGS packet\n");
goto error;
}
PGS_DUMP ("Begin dumping command buffer of size %u ts %" GST_TIME_FORMAT "\n",
end - pos, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
do {
type = *pos++;
packet_len = GST_READ_UINT16_BE (pos);
pos += 2;
if (pos + packet_len > end) {
gst_buffer_unmap (buf, &map);
PGS_DUMP ("Invalid packet length %u (only have %u bytes)\n", packet_len,
end - pos);
goto error;
}
if (parse_pgs_packet (dvdspu, type, pos, packet_len))
goto error;
pos += packet_len;
} while (pos + 3 <= end);
PGS_DUMP ("End dumping command buffer with %u bytes remaining\n", end - pos);
return (pos - map.data);
/* ERRORS */
error:
{
gst_buffer_unmap (buf, &map);
return -1;
}
}
static gboolean
test_mpeg_audio_parse_check_valid_frame (GstBaseParse * parse,
GstBaseParseFrame * frame, guint * framesize, gint * skipsize)
{
const guint8 *data = GST_BUFFER_DATA (frame->buffer);
if ((GST_READ_UINT16_BE (data) & 0xffe0) == 0xffe0) {
/* this framesize is hard-coded for ../test.mp3 */
*framesize = 1045;
return TRUE;
} else {
*skipsize = 1;
return FALSE;
}
}
/* FIXME: especially for multi-section tables, we need to handle pusi correctly
* and handle cases where a new section starts in the same transport packet.
*/
gboolean
gst_section_filter_push (GstSectionFilter *filter,
gboolean pusi, /* determines whether start or not */
guint8 continuity_counter,
GstBuffer *buf)
{
g_return_val_if_fail (filter != NULL, FALSE);
/* check if it's the first packet of a section or
* if it continues the section */
if (pusi) {
const guint8* data = GST_BUFFER_DATA(buf);
if (filter->last_continuity_counter != 255) {
GST_WARNING ("section lost, last continuity counter: %d"
"we now have a pusi at continuity counter: %d",
filter->last_continuity_counter,
continuity_counter);
gst_section_filter_clear (filter);
}
filter->section_length = GST_READ_UINT16_BE (data+1);
filter->section_length &= 0x0fff;
if (filter->section_length > 1021) {
GST_DEBUG ("section length too big");
return FALSE;
}
gst_adapter_push (filter->adapter, buf);
filter->last_continuity_counter = continuity_counter;
return gst_section_is_complete (filter);
} else if (filter->last_continuity_counter == continuity_counter - 1 ||
(filter->last_continuity_counter == 15 &&
continuity_counter == 0)) {
GST_DEBUG ("section still going, no pusi");
gst_adapter_push (filter->adapter, buf);
filter->last_continuity_counter = continuity_counter;
return gst_section_is_complete (filter);
}
/* we have lost the section and we are not a start
* section, so clear what was in it */
else {
GST_WARNING ("section lost, last continuity counter: %d"
"new continuity counter but not pusi: %d",
filter->last_continuity_counter,
continuity_counter);
gst_section_filter_clear (filter);
return FALSE;
}
}
EXPORT_C
#endif
guint
gst_rtp_buffer_get_header_len (GstBuffer * buffer)
{
guint len;
g_return_val_if_fail (GST_IS_BUFFER (buffer), 0);
len = GST_RTP_HEADER_LEN + GST_RTP_HEADER_CSRC_SIZE (buffer);
if (GST_RTP_HEADER_EXTENSION (buffer))
len += GST_READ_UINT16_BE (GST_BUFFER_DATA (buffer) + len + 2) * 4 + 4;
return len;
}
guint16
gst_rdt_packet_data_get_seq (GstRDTPacket * packet)
{
guint header;
guint8 *bufdata;
g_return_val_if_fail (packet != NULL, FALSE);
g_return_val_if_fail (GST_RDT_IS_DATA_TYPE (packet->type), FALSE);
bufdata = GST_BUFFER_DATA (packet->buffer);
/* skip header bits */
header = packet->offset + 1;
/* read seq_no */
return GST_READ_UINT16_BE (&bufdata[header]);
}
static void
_encode_control_codes (gchar * text, gsize length, gboolean is_multibyte)
{
gsize pos = 0;
while (pos < length) {
if (is_multibyte) {
guint16 code = GST_READ_UINT16_BE (text + pos);
if (code == 0x000A) {
text[pos] = 0xE0;
text[pos + 1] = 0x8A;
}
pos += 2;
} else {
guint8 code = text[pos];
if (code == 0x0A)
text[pos] = 0x8A;
pos++;
}
}
}
static gboolean
gst_real_audio_demux_get_data_offset_from_header (GstRealAudioDemux * demux)
{
guint8 data[16];
gst_adapter_copy (demux->adapter, data, 0, 16);
switch (demux->ra_version) {
case 3:
demux->data_offset = GST_READ_UINT16_BE (data) + 8;
break;
case 4:
demux->data_offset = GST_READ_UINT32_BE (data + 12) + 16;
break;
default:
demux->data_offset = 0;
g_return_val_if_reached (FALSE);
}
return TRUE;
}
gboolean
mxf_timestamp_parse (MXFTimestamp * timestamp, const guint8 * data, guint size)
{
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (timestamp != NULL, FALSE);
memset (timestamp, 0, sizeof (MXFTimestamp));
if (size < 8)
return FALSE;
timestamp->year = GST_READ_UINT16_BE (data);
timestamp->month = GST_READ_UINT8 (data + 2);
timestamp->day = GST_READ_UINT8 (data + 3);
timestamp->hour = GST_READ_UINT8 (data + 4);
timestamp->minute = GST_READ_UINT8 (data + 5);
timestamp->second = GST_READ_UINT8 (data + 6);
timestamp->quarter_msecond = GST_READ_UINT8 (data + 7);
return TRUE;
}
