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gstrtpj2kpay: use tile bit and tile number to determine if there are multiple tiles in packet

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Now we don't have to rely on a special value for the tile number.

https://bugzilla.gnome.org/show_bug.cgi?id=767817
This commit is contained in:
Aaron Boxer 2016-06-21 07:40:42 -04:00 committed by Tim-Philipp Müller
parent 323244bc04
commit f07c704b49
1 changed files with 9 additions and 11 deletions
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20
gst/rtp/gstrtpj2kpay.c
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@ -188,7 +188,7 @@ gst_rtp_j2k_pay_scan_marker (const guint8 * data, guint size, guint * offset)
typedef struct
{
RtpJ2KHeader header;
gboolean multi_tile_part;
gboolean multi_tile;
gboolean bitstream;
guint next_sot;
gboolean force_packet;
@ -271,15 +271,13 @@ find_pu_end (GstRtpJ2KPay * pay, const guint8 * data, guint size,
/* Isot */
tile = GST_READ_UINT16_BE (&data[offset + 2]);
if (!state->multi_tile_part) {
/* tile is marked as valid */
state->header.T = 0;
/* we have detected multiple tile parts in this rtp packet : tile bit is now invalid */
if (state->header.tile != tile) {
if (!state->multi_tile) {
/* we have detected multiple tiles in this rtp packet : tile bit is now invalid */
if (state->header.T == 0 && state->header.tile != tile) {
state->header.T = 1;
state->multi_tile_part = TRUE;
state->multi_tile = TRUE;
} else {
state->header.T = 0;
}
}
state->header.tile = tile;
@ -363,7 +361,7 @@ gst_rtp_j2k_pay_handle_buffer (GstRTPBasePayload * basepayload,
state.header.priority = 255; /* always 255 for now */
state.header.tile = 0xffff; /* no tile number */
state.header.offset = 0; /* offset of 0 */
state.multi_tile_part = FALSE;
state.multi_tile = FALSE;
state.bitstream = FALSE;
state.next_sot = 0;
state.force_packet = FALSE;
@ -515,7 +513,7 @@ gst_rtp_j2k_pay_handle_buffer (GstRTPBasePayload * basepayload,
gst_buffer_list_add (list, outbuf);
/* reset multi_tile */
state.multi_tile_part = FALSE;
state.multi_tile = FALSE;
/* set MHF to zero if there is no more main header to process */