diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2013-03-15 20:49:05 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2013-03-15 20:49:05 -0400 |
| commit | 3d38e82e7d87dfc01132b199e33b53add8a706fa (patch) | |
| tree | af4545bcf3cea24dc30571601116a3a89381ad5d /gr-atsc/src/python/atsc_utils.py | |
| parent | 39ff6d4814c858f2dbaf3c8007940872c46d6c95 (diff) | |
atsc: adjustments to atsc to start to conform to v3.7 structure.
Not going to comply completely with the new structure; just wanted to get it so that it looked more consistent once installed.
Diffstat (limited to 'gr-atsc/src/python/atsc_utils.py')
| -rw-r--r-- | gr-atsc/src/python/atsc_utils.py | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/gr-atsc/src/python/atsc_utils.py b/gr-atsc/src/python/atsc_utils.py deleted file mode 100644 index fc2465bed2..0000000000 --- a/gr-atsc/src/python/atsc_utils.py +++ /dev/null @@ -1,75 +0,0 @@ -# -# Copyright 2006 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 3, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -import random -import sys - -MPEG_SYNC_BYTE = 0x47 - -def make_fake_transport_stream_packet(npkts): - """ - Return a sequence of 8-bit ints that represents an MPEG Transport Stream packet. - - Args: - npkts: how many 188-byte packets to return - - FYI, each ATSC Data Frame contains two Data Fields, each of which contains - 312 data segments. Each transport stream packet maps to a data segment. - """ - r = [0] * (npkts * 188) - i = 0 - for j in range(npkts): - r[i+0] = MPEG_SYNC_BYTE - r[i+1] = random.randint(0, 127) # top bit (transport error bit) clear - i = i + 2 - for n in range(186): - r[i + n] = random.randint(0, 255) - i = i + 186 - - return r - - -def pad_stream(src, sizeof_total, sizeof_pad): - sizeof_valid = sizeof_total - sizeof_pad - assert sizeof_valid > 0 - assert (len(src) % sizeof_valid) == 0 - npkts = len(src) // sizeof_valid - dst = [0] * (npkts * sizeof_total) - for i in range(npkts): - src_s = i * sizeof_valid - dst_s = i * sizeof_total - dst[dst_s:dst_s + sizeof_valid] = src[src_s:src_s + sizeof_valid] - return dst - - -def depad_stream(src, sizeof_total, sizeof_pad): - sizeof_valid = sizeof_total - sizeof_pad - assert sizeof_valid > 0 - assert (len(src) % sizeof_total) == 0 - npkts = len(src) // sizeof_total - dst = [0] * (npkts * sizeof_valid) - for i in range(npkts): - src_s = i * sizeof_total - dst_s = i * sizeof_valid - dst[dst_s:dst_s + sizeof_valid] = src[src_s:src_s + sizeof_valid] - return dst - - |