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dvdspu: pop new packet when invalid next command block

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... to prevent staying stuck on current command block and busy looping.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=712219
This commit is contained in:
Mark Nauwelaerts 2013-11-23 14:35:06 +01:00
parent fac0f1f668
commit db915754c1
1 changed files with 7 additions and 5 deletions
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12
gst/dvdspu/gstspu-vobsub.c
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@ -261,8 +261,10 @@ gst_dvd_spu_setup_cmd_blk (GstDVDSpu * dvdspu, guint16 cmd_blk_offset,
guint16 delay; guint16 delay;
guint8 *cmd_blk = start + cmd_blk_offset; guint8 *cmd_blk = start + cmd_blk_offset;
if (G_UNLIKELY (cmd_blk + 5 >= end)) if (G_UNLIKELY (cmd_blk + 5 >= end)) {
GST_DEBUG_OBJECT (dvdspu, "No valid command block");
return FALSE; /* No valid command block to read */ return FALSE; /* No valid command block to read */
}
delay = GST_READ_UINT16_BE (cmd_blk); delay = GST_READ_UINT16_BE (cmd_blk);
state->next_ts = state->vobsub.base_ts + STM_TO_GST (delay); state->next_ts = state->vobsub.base_ts + STM_TO_GST (delay);
@ -368,6 +370,7 @@ gstspu_vobsub_execute_event (GstDVDSpu * dvdspu)
guint8 *start, *cmd_blk, *end; guint8 *start, *cmd_blk, *end;
guint16 next_blk; guint16 next_blk;
SpuState *state = &dvdspu->spu_state; SpuState *state = &dvdspu->spu_state;
gboolean ret = TRUE;
if (state->vobsub.buf == NULL) if (state->vobsub.buf == NULL)
return FALSE; return FALSE;
@ -394,17 +397,16 @@ gstspu_vobsub_execute_event (GstDVDSpu * dvdspu)
next_blk = GST_READ_UINT16_BE (cmd_blk + 2); next_blk = GST_READ_UINT16_BE (cmd_blk + 2);
if (next_blk != state->vobsub.cur_cmd_blk) { if (next_blk != state->vobsub.cur_cmd_blk) {
/* Advance to the next block of commands */ /* Advance to the next block of commands */
gst_dvd_spu_setup_cmd_blk (dvdspu, next_blk, start, end); ret = gst_dvd_spu_setup_cmd_blk (dvdspu, next_blk, start, end);
} else { } else {
/* Next Block points to the current block, so we're finished with this /* Next Block points to the current block, so we're finished with this
* SPU buffer */ * SPU buffer */
gst_buffer_unmap (state->vobsub.buf, &map);
gst_dvd_spu_finish_spu_buf (dvdspu); gst_dvd_spu_finish_spu_buf (dvdspu);
return FALSE; ret = FALSE;
} }
gst_buffer_unmap (state->vobsub.buf, &map); gst_buffer_unmap (state->vobsub.buf, &map);
return TRUE; return ret;
} }
gboolean gboolean