Revert r97185 "Update libvpx snapshot to v0.9.7-p1 (Cayuga)."

libvpx/source/libvpx/examples/decode_with_partial_drops.txt

Index: libvpx/source/libvpx/examples/decode_with_partial_drops.txt
diff --git a/libvpx/source/libvpx/examples/decode_with_partial_drops.txt b/libvpx/source/libvpx/examples/decode_with_partial_drops.txt
deleted file mode 100644
index 7b0d3d2ca8e1b1f9b9f03f901cfb367c6a830fe5..0000000000000000000000000000000000000000
--- a/libvpx/source/libvpx/examples/decode_with_partial_drops.txt
+++ /dev/null
@@ -1,238 +0,0 @@
-@TEMPLATE decoder_tmpl.c
-Decode With Partial Drops Example
-=========================
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ INTRODUCTION
-This is an example utility which drops a series of frames (or parts of frames),
-as specified on the command line. This is useful for observing the error
-recovery features of the codec.
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ INTRODUCTION
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ EXTRA_INCLUDES
-#include <time.h>
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ EXTRA_INCLUDES
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HELPERS
-struct parsed_header
-{
-    char key_frame;
-    int version;
-    char show_frame;
-    int first_part_size;
-};
-
-int next_packet(struct parsed_header* hdr, int pos, int length, int mtu)
-{
-    int size = 0;
-    int remaining = length - pos;
-    /* Uncompressed part is 3 bytes for P frames and 10 bytes for I frames */
-    int uncomp_part_size = (hdr->key_frame ? 10 : 3);
-    /* number of bytes yet to send from header and the first partition */
-    int remainFirst = uncomp_part_size + hdr->first_part_size - pos;
-    if (remainFirst > 0)
-    {
-        if (remainFirst <= mtu)
-        {
-            size = remainFirst;
-        }
-        else
-        {
-            size = mtu;
-        }
-
-        return size;
-    }
-
-    /* second partition; just slot it up according to MTU */
-    if (remaining <= mtu)
-    {
-        size = remaining;
-        return size;
-    }
-    return mtu;
-}
-
-void throw_packets(unsigned char* frame, int* size, int loss_rate,
-                   int* thrown, int* kept)
-{
-    unsigned char loss_frame[256*1024];
-    int pkg_size = 1;
-    int pos = 0;
-    int loss_pos = 0;
-    struct parsed_header hdr;
-    unsigned int tmp;
-    int mtu = 1500;
-
-    if (*size < 3)
-    {
-        return;
-    }
-    putc('|', stdout);
-    /* parse uncompressed 3 bytes */
-    tmp = (frame[2] << 16) | (frame[1] << 8) | frame[0];
-    hdr.key_frame = !(tmp & 0x1); /* inverse logic */
-    hdr.version = (tmp >> 1) & 0x7;
-    hdr.show_frame = (tmp >> 4) & 0x1;
-    hdr.first_part_size = (tmp >> 5) & 0x7FFFF;
-
-    /* don't drop key frames */
-    if (hdr.key_frame)
-    {
-        int i;
-        *kept = *size/mtu + ((*size % mtu > 0) ? 1 : 0); /* approximate */
-        for (i=0; i < *kept; i++)
-            putc('.', stdout);
-        return;
-    }
-
-    while ((pkg_size = next_packet(&hdr, pos, *size, mtu)) > 0)
-    {
-        int loss_event = ((rand() + 1.0)/(RAND_MAX + 1.0) < loss_rate/100.0);
-        if (*thrown == 0 && !loss_event)
-        {
-            memcpy(loss_frame + loss_pos, frame + pos, pkg_size);
-            loss_pos += pkg_size;
-            (*kept)++;
-            putc('.', stdout);
-        }
-        else
-        {
-            (*thrown)++;
-            putc('X', stdout);
-        }
-        pos += pkg_size;
-    }
-    memcpy(frame, loss_frame, loss_pos);
-    memset(frame + loss_pos, 0, *size - loss_pos);
-    *size = loss_pos;
-}
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HELPERS
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ DEC_INIT
-/* Initialize codec */
-flags = VPX_CODEC_USE_ERROR_CONCEALMENT;
-res = vpx_codec_dec_init(&codec, interface, &dec_cfg, flags);
-if(res)
-    die_codec(&codec, "Failed to initialize decoder");
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ DEC_INIT
-
-Usage
------
-This example adds a single argument to the `simple_decoder` example,
-which specifies the range or pattern of frames to drop. The parameter is
-parsed as follows:
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ USAGE
-if(argc < 4 || argc > 6)
-    die("Usage: %s <infile> <outfile> [-t <num threads>] <N-M|N/M|L,S>\n",
-        argv[0]);
-{
-    char *nptr;
-    int arg_num = 3;
-    if (argc == 6 && strncmp(argv[arg_num++], "-t", 2) == 0)
-        dec_cfg.threads = strtol(argv[arg_num++], NULL, 0);
-    n = strtol(argv[arg_num], &nptr, 0);
-    mode = (*nptr == '\0' || *nptr == ',') ? 2 : (*nptr == '-') ? 1 : 0;
-
-    m = strtol(nptr+1, NULL, 0);
-    if((!n && !m) || (*nptr != '-' && *nptr != '/' &&
-        *nptr != '\0' && *nptr != ','))
-        die("Couldn't parse pattern %s\n", argv[3]);
-}
-seed = (m > 0) ? m : (unsigned int)time(NULL);
-srand(seed);thrown_frame = 0;
-printf("Seed: %u\n", seed);
-printf("Threads: %d\n", dec_cfg.threads);
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ USAGE
-
-
-Dropping A Range Of Frames
---------------------------
-To drop a range of frames, specify the starting frame and the ending
-frame to drop, separated by a dash. The following command will drop
-frames 5 through 10 (base 1).
-
-  $ ./decode_with_partial_drops in.ivf out.i420 5-10
-
-
-Dropping A Pattern Of Frames
-----------------------------
-To drop a pattern of frames, specify the number of frames to drop and
-the number of frames after which to repeat the pattern, separated by
-a forward-slash. The following command will drop 3 of 7 frames.
-Specifically, it will decode 4 frames, then drop 3 frames, and then
-repeat.
-
-  $ ./decode_with_partial_drops in.ivf out.i420 3/7
-
-Dropping Random Parts Of Frames
--------------------------------
-A third argument tuple is available to split the frame into 1500 bytes pieces
-and randomly drop pieces rather than frames. The frame will be split at
-partition boundaries where possible. The following example will seed the RNG
-with the seed 123 and drop approximately 5% of the pieces. Pieces which
-are depending on an already dropped piece will also be dropped.
-
-  $ ./decode_with_partial_drops in.ivf out.i420 5,123
-
-
-Extra Variables
----------------
-This example maintains the pattern passed on the command line in the
-`n`, `m`, and `is_range` variables:
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ EXTRA_VARS
-int              n, m, mode;
-unsigned int     seed;
-int              thrown=0, kept=0;
-int              thrown_frame=0, kept_frame=0;
-vpx_codec_dec_cfg_t  dec_cfg = {0};
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ EXTRA_VARS
-
-
-Making The Drop Decision
-------------------------
-The example decides whether to drop the frame based on the current
-frame number, immediately before decoding the frame.
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ PRE_DECODE
-/* Decide whether to throw parts of the frame or the whole frame
-   depending on the drop mode */
-thrown_frame = 0;
-kept_frame = 0;
-switch (mode)
-{
-case 0:
-    if (m - (frame_cnt-1)%m <= n)
-    {
-        frame_sz = 0;
-    }
-    break;
-case 1:
-    if (frame_cnt >= n && frame_cnt <= m)
-    {
-        frame_sz = 0;
-    }
-    break;
-case 2:
-    throw_packets(frame, &frame_sz, n, &thrown_frame, &kept_frame);
-    break;
-default: break;
-}
-if (mode < 2)
-{
-    if (frame_sz == 0)
-    {
-        putc('X', stdout);
-        thrown_frame++;
-    }
-    else
-    {
-        putc('.', stdout);
-        kept_frame++;
-    }
-}
-thrown += thrown_frame;
-kept += kept_frame;
-fflush(stdout);
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ PRE_DECODE