guint
flv_parse_tag (const guint8 * data, guint size,
guint8 * packet_type, guint * payload_size, guint * timestamp)
{
if (size < flv_tag_header_size)
return 0;
*packet_type = data[0];
*payload_size = GST_READ_UINT24_BE (&data[1]);
*timestamp = GST_READ_UINT24_BE (&data[4]) | (data[7] << 24);
return flv_tag_header_size;
}
static int
_parse_u24 (AmfParser * parser)
{
int x;
x = GST_READ_UINT24_BE (parser->data + parser->offset);
parser->offset += 3;
return x;
}
EXPORT_C
#endif
gboolean
gst_byte_reader_peek_uint24_be (GstByteReader * reader, guint32 * val)
{
g_return_val_if_fail (reader != NULL, FALSE);
g_return_val_if_fail (val != NULL, FALSE);
if (gst_byte_reader_get_remaining (reader) < 3)
return FALSE;
*val = GST_READ_UINT24_BE (&reader->data[reader->byte]);
return TRUE;
}
static void
input_data_int24_max (const guint8 * _in, gfloat * out, guint len,
guint channels, gfloat max_value, guint op, guint nfft)
{
guint j;
for (j = 0; j < len; j++) {
#if G_BYTE_ORDER == G_BIG_ENDIAN
gint32 v = GST_READ_UINT24_BE (_in);
#else
gint32 v = GST_READ_UINT24_LE (_in);
#endif
if (v & 0x00800000)
v |= 0xff000000;
_in += 3 * channels;
out[op] = v / max_value;
op = (op + 1) % nfft;
}
}
static void
input_data_mixed_int24_max (const guint8 * _in, double* out, guint len,
double max_value, guint op, guint nfft)
{
guint j;
for (j = 0; j < len; j++) {
#if G_BYTE_ORDER == G_BIG_ENDIAN
gint32 value = GST_READ_UINT24_BE (_in);
#else
gint32 value = GST_READ_UINT24_LE (_in);
#endif
if (value & 0x00800000)
value |= 0xff000000;
out[op] = value / max_value;
op = (op + 1) % nfft;
_in += 3;
}
}
static void
input_data_mixed_int24_max (const guint8 * _in, gfloat * out, guint len,
guint channels, gfloat max_value, guint op, guint nfft)
{
guint i, j;
gfloat v = 0.0;
for (j = 0; j < len; j++) {
for (i = 0; i < channels; i++) {
#if G_BYTE_ORDER == G_BIG_ENDIAN
gint32 value = GST_READ_UINT24_BE (_in);
#else
gint32 value = GST_READ_UINT24_LE (_in);
#endif
if (value & 0x00800000)
value |= 0xff000000;
v += value / max_value;
_in += 3;
}
out[op] = v / channels;
op = (op + 1) % nfft;
}
}
EXPORT_C
#endif
gboolean
gst_byte_reader_get_int24_be (GstByteReader * reader, gint32 * val)
{
guint32 ret;
g_return_val_if_fail (reader != NULL, FALSE);
g_return_val_if_fail (val != NULL, FALSE);
if (gst_byte_reader_get_remaining (reader) < 3)
return FALSE;
ret = GST_READ_UINT24_BE (&reader->data[reader->byte]);
if (ret & 0x00800000)
ret |= 0xff000000;
reader->byte += 3;
*val = ret;
return TRUE;
}
static int
parse_set_object_data (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
guint16 len)
{
SpuPgsState *pgs_state = &dvdspu->spu_state.pgs;
PgsCompositionObject *obj;
guint8 *end = payload + len;
guint16 obj_id;
guint8 obj_ver, flags;
if (payload + 4 > end)
return 0;
obj_id = GST_READ_UINT16_BE (payload);
obj_ver = payload[2];
flags = payload[3];
payload += 4;
obj = pgs_presentation_segment_find_object (&(pgs_state->pres_seg), obj_id);
PGS_DUMP ("Object ID %d ver %u flags 0x%02x\n", obj_id, obj_ver, flags);
if (flags & PGS_OBJECT_UPDATE_FLAG_START_RLE) {
obj->rle_data_ver = obj_ver;
if (payload + 3 > end)
return 0;
obj->rle_data_size = GST_READ_UINT24_BE (payload);
payload += 3;
PGS_DUMP ("%d bytes of RLE data, of %d bytes total.\n",
end - payload, obj->rle_data_size);
obj->rle_data = g_realloc (obj->rle_data, obj->rle_data_size);
obj->rle_data_used = end - payload;
memcpy (obj->rle_data, payload, end - payload);
payload = end;
} else {
PGS_DUMP ("%d bytes of additional RLE data\n", end - payload);
/* Check that the data chunk is for this object version, and fits in the buffer */
if (obj->rle_data_ver == obj_ver &&
obj->rle_data_used + end - payload <= obj->rle_data_size) {
memcpy (obj->rle_data + obj->rle_data_used, payload, end - payload);
obj->rle_data_used += end - payload;
payload = end;
}
}
if (obj->rle_data_size == obj->rle_data_used)
dump_rle_data (dvdspu, obj->rle_data, obj->rle_data_size);
if (payload != end) {
GST_ERROR ("PGS Set Object Data: %" G_GSSIZE_FORMAT " bytes not consumed",
(gssize) (end - payload));
dump_bytes (payload, end - payload);
}
return 0;
}
static gboolean
read_one (GstPluginLoader * l)
{
guint64 magic;
guint32 to_read, packet_len, tag;
guint8 *in;
gint res;
to_read = HEADER_SIZE;
in = l->rx_buf;
do {
res = read (l->fd_r.fd, in, to_read);
if (G_UNLIKELY (res < 0)) {
if (errno == EAGAIN || errno == EINTR)
continue;
GST_LOG ("Failed reading packet header");
return FALSE;
}
to_read -= res;
in += res;
} while (to_read > 0);
magic = GST_READ_UINT32_BE (l->rx_buf + 8);
if (magic != HEADER_MAGIC) {
GST_WARNING
("Invalid packet (bad magic number) received from plugin scanner subprocess");
return FALSE;
}
packet_len = GST_READ_UINT32_BE (l->rx_buf + 4);
if (packet_len + HEADER_SIZE > BUF_MAX_SIZE) {
GST_WARNING
("Received excessively large packet for plugin scanner subprocess");
return FALSE;
}
tag = GST_READ_UINT24_BE (l->rx_buf + 1);
if (packet_len > 0) {
if (packet_len + HEADER_SIZE >= l->rx_buf_size) {
GST_LOG ("Expanding rx buf from %d to %d",
l->rx_buf_size, packet_len + HEADER_SIZE + BUF_GROW_EXTRA);
l->rx_buf_size = packet_len + HEADER_SIZE + BUF_GROW_EXTRA;
l->rx_buf = g_realloc (l->rx_buf, l->rx_buf_size);
}
in = l->rx_buf + HEADER_SIZE;
to_read = packet_len;
do {
res = read (l->fd_r.fd, in, to_read);
if (G_UNLIKELY (res < 0)) {
if (errno == EAGAIN || errno == EINTR)
continue;
GST_ERROR ("Packet payload read failed");
return FALSE;
}
to_read -= res;
in += res;
} while (to_read > 0);
} else {
GST_LOG ("No payload to read for 0 length packet type %d tag %u",
l->rx_buf[0], tag);
}
return handle_rx_packet (l, l->rx_buf[0], tag,
l->rx_buf + HEADER_SIZE, packet_len);
}
static gboolean
verify_buffer (buffer_verify_data_s * vdata, GstBuffer * buffer)
{
if (vdata->discard) {
/* check separate header NALs */
gint i = vdata->buffer_counter;
guint ofs;
/* SEI with start code prefix with 2 0-bytes */
ofs = i == 1;
fail_unless (i <= 2);
fail_unless (gst_buffer_get_size (buffer) == ctx_headers[i].size - ofs);
fail_unless (gst_buffer_memcmp (buffer, 0, ctx_headers[i].data + ofs,
gst_buffer_get_size (buffer)) == 0);
} else {
GstMapInfo map;
gst_buffer_map (buffer, &map, GST_MAP_READ);
fail_unless (map.size > 4);
/* only need to check avc and bs-to-nal output case */
if (GST_READ_UINT24_BE (map.data) == 0x01) {
/* in bs-to-nal, a leading 0x00 is stripped from output */
fail_unless (gst_buffer_get_size (buffer) ==
vdata->data_to_verify_size - 1);
fail_unless (gst_buffer_memcmp (buffer, 0, vdata->data_to_verify + 1,
vdata->data_to_verify_size - 1) == 0);
gst_buffer_unmap (buffer, &map);
return TRUE;
} else if (GST_READ_UINT32_BE (map.data) == 0x01) {
/* this is not avc, use default tests from parser.c */
gst_buffer_unmap (buffer, &map);
return FALSE;
}
/* header is merged in initial frame */
if (vdata->buffer_counter == 0) {
guint8 *data = map.data;
fail_unless (map.size == vdata->data_to_verify_size +
ctx_headers[0].size + ctx_headers[1].size + ctx_headers[2].size);
fail_unless (GST_READ_UINT32_BE (data) == ctx_headers[0].size - 4);
fail_unless (memcmp (data + 4, ctx_headers[0].data + 4,
ctx_headers[0].size - 4) == 0);
data += ctx_headers[0].size;
fail_unless (GST_READ_UINT32_BE (data) == ctx_headers[1].size - 4);
fail_unless (memcmp (data + 4, ctx_headers[1].data + 4,
ctx_headers[1].size - 4) == 0);
data += ctx_headers[1].size;
fail_unless (GST_READ_UINT32_BE (data) == ctx_headers[2].size - 4);
fail_unless (memcmp (data + 4, ctx_headers[2].data + 4,
ctx_headers[2].size - 4) == 0);
data += ctx_headers[2].size;
fail_unless (GST_READ_UINT32_BE (data) == vdata->data_to_verify_size - 4);
fail_unless (memcmp (data + 4, vdata->data_to_verify + 4,
vdata->data_to_verify_size - 4) == 0);
} else {
fail_unless (GST_READ_UINT32_BE (map.data) == map.size - 4);
fail_unless (map.size == vdata->data_to_verify_size);
fail_unless (memcmp (map.data + 4, vdata->data_to_verify + 4,
map.size - 4) == 0);
}
gst_buffer_unmap (buffer, &map);
return TRUE;
}
return FALSE;
}
