Remove decode_with_partial_drops example.
Bitrotted and non-functional. Does one of two things: Crashes or reports errors and quits. Change-Id: Ia9c391ecd6e716b183d925247bf3dc0509ce4586
This commit is contained in:
Tom Finegan
Родитель
cc5eee12bf
Коммит
f06de3b0a6
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@ -146,11 +146,6 @@ decode_with_drops.SRCS += vpx_ports/mem_ops_aligned.h
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endif
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endif
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decode_with_drops.GUID = CE5C53C4-8DDA-438A-86ED-0DDD3CDB8D26
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decode_with_drops.GUID = CE5C53C4-8DDA-438A-86ED-0DDD3CDB8D26
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decode_with_drops.DESCRIPTION = Drops frames while decoding
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decode_with_drops.DESCRIPTION = Drops frames while decoding
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ifeq ($(CONFIG_VP8_DECODER),yes)
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EXAMPLES-$(CONFIG_ERROR_CONCEALMENT) += decode_with_partial_drops.c
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endif
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decode_with_partial_drops.GUID = 61C2D026-5754-46AC-916F-1343ECC5537E
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decode_with_partial_drops.DESCRIPTION = Drops parts of frames while decoding
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EXAMPLES-$(CONFIG_ENCODERS) += set_maps.c
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EXAMPLES-$(CONFIG_ENCODERS) += set_maps.c
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set_maps.SRCS += ivfenc.h ivfenc.c
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set_maps.SRCS += ivfenc.h ivfenc.c
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set_maps.SRCS += tools_common.h tools_common.c
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set_maps.SRCS += tools_common.h tools_common.c
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@ -1,328 +0,0 @@
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/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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// Decode With Partial Drops Example
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// =========================
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//
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// This is an example utility which drops a series of frames (or parts of
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// frames), as specified on the command line. This is useful for observing the
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// error recovery features of the codec.
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//
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// Usage
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// -----
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// This example adds a single argument to the `simple_decoder` example,
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// which specifies the range or pattern of frames to drop. The parameter is
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// parsed as follows.
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//
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// Dropping A Range Of Frames
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// --------------------------
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// To drop a range of frames, specify the starting frame and the ending
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// frame to drop, separated by a dash. The following command will drop
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// frames 5 through 10 (base 1).
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//
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// $ ./decode_with_partial_drops in.ivf out.i420 5-10
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//
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//
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// Dropping A Pattern Of Frames
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// ----------------------------
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// To drop a pattern of frames, specify the number of frames to drop and
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// the number of frames after which to repeat the pattern, separated by
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// a forward-slash. The following command will drop 3 of 7 frames.
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// Specifically, it will decode 4 frames, then drop 3 frames, and then
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// repeat.
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//
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// $ ./decode_with_partial_drops in.ivf out.i420 3/7
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//
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// Dropping Random Parts Of Frames
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// -------------------------------
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// A third argument tuple is available to split the frame into 1500 bytes pieces
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// and randomly drop pieces rather than frames. The frame will be split at
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// partition boundaries where possible. The following example will seed the RNG
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// with the seed 123 and drop approximately 5% of the pieces. Pieces which
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// are depending on an already dropped piece will also be dropped.
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//
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// $ ./decode_with_partial_drops in.ivf out.i420 5,123
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//
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// Extra Variables
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// ---------------
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// This example maintains the pattern passed on the command line in the
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// `n`, `m`, and `is_range` variables:
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//
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// Making The Drop Decision
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// ------------------------
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// The example decides whether to drop the frame based on the current
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// frame number, immediately before decoding the frame.
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define VPX_CODEC_DISABLE_COMPAT 1
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#include "./vpx_config.h"
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#include "vpx/vp8dx.h"
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#include "vpx/vpx_decoder.h"
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#define interface (vpx_codec_vp8_dx())
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#include <time.h>
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#define IVF_FILE_HDR_SZ (32)
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#define IVF_FRAME_HDR_SZ (12)
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static unsigned int mem_get_le32(const unsigned char *mem) {
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return (mem[3] << 24)|(mem[2] << 16)|(mem[1] << 8)|(mem[0]);
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}
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static void die(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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vprintf(fmt, ap);
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if(fmt[strlen(fmt)-1] != '\n')
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printf("\n");
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exit(EXIT_FAILURE);
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}
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static void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
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const char *detail = vpx_codec_error_detail(ctx);
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printf("%s: %s\n", s, vpx_codec_error(ctx));
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if(detail)
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printf(" %s\n",detail);
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exit(EXIT_FAILURE);
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}
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struct parsed_header
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{
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char key_frame;
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int version;
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char show_frame;
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int first_part_size;
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};
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int next_packet(struct parsed_header* hdr, int pos, int length, int mtu)
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{
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int size = 0;
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int remaining = length - pos;
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/* Uncompressed part is 3 bytes for P frames and 10 bytes for I frames */
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int uncomp_part_size = (hdr->key_frame ? 10 : 3);
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/* number of bytes yet to send from header and the first partition */
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int remainFirst = uncomp_part_size + hdr->first_part_size - pos;
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if (remainFirst > 0)
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{
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if (remainFirst <= mtu)
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{
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size = remainFirst;
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}
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else
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{
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size = mtu;
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}
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return size;
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}
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/* second partition; just slot it up according to MTU */
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if (remaining <= mtu)
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{
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size = remaining;
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return size;
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}
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return mtu;
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}
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void throw_packets(unsigned char* frame, int* size, int loss_rate,
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int* thrown, int* kept)
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{
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unsigned char loss_frame[256*1024];
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int pkg_size = 1;
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int pos = 0;
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int loss_pos = 0;
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struct parsed_header hdr;
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unsigned int tmp;
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int mtu = 1500;
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if (*size < 3)
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{
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return;
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}
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putc('|', stdout);
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/* parse uncompressed 3 bytes */
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tmp = (frame[2] << 16) | (frame[1] << 8) | frame[0];
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hdr.key_frame = !(tmp & 0x1); /* inverse logic */
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hdr.version = (tmp >> 1) & 0x7;
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hdr.show_frame = (tmp >> 4) & 0x1;
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hdr.first_part_size = (tmp >> 5) & 0x7FFFF;
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/* don't drop key frames */
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if (hdr.key_frame)
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{
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int i;
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*kept = *size/mtu + ((*size % mtu > 0) ? 1 : 0); /* approximate */
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for (i=0; i < *kept; i++)
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putc('.', stdout);
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return;
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}
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while ((pkg_size = next_packet(&hdr, pos, *size, mtu)) > 0)
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{
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int loss_event = ((rand() + 1.0)/(RAND_MAX + 1.0) < loss_rate/100.0);
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if (*thrown == 0 && !loss_event)
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{
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memcpy(loss_frame + loss_pos, frame + pos, pkg_size);
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loss_pos += pkg_size;
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(*kept)++;
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putc('.', stdout);
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}
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else
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{
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(*thrown)++;
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putc('X', stdout);
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}
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pos += pkg_size;
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}
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memcpy(frame, loss_frame, loss_pos);
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memset(frame + loss_pos, 0, *size - loss_pos);
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*size = loss_pos;
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}
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int main(int argc, char **argv) {
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FILE *infile, *outfile;
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vpx_codec_ctx_t codec;
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int flags = 0, frame_cnt = 0;
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unsigned char file_hdr[IVF_FILE_HDR_SZ];
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unsigned char frame_hdr[IVF_FRAME_HDR_SZ];
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unsigned char frame[256*1024];
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vpx_codec_err_t res;
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int n, m, mode;
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unsigned int seed;
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int thrown=0, kept=0;
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int thrown_frame=0, kept_frame=0;
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vpx_codec_dec_cfg_t dec_cfg = {0};
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(void)res;
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/* Open files */
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if(argc < 4 || argc > 6)
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die("Usage: %s <infile> <outfile> [-t <num threads>] <N-M|N/M|L,S>\n",
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argv[0]);
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{
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char *nptr;
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int arg_num = 3;
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if (argc == 6 && strncmp(argv[arg_num++], "-t", 2) == 0)
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dec_cfg.threads = strtol(argv[arg_num++], NULL, 0);
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n = strtol(argv[arg_num], &nptr, 0);
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mode = (*nptr == '\0' || *nptr == ',') ? 2 : (*nptr == '-') ? 1 : 0;
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m = strtol(nptr+1, NULL, 0);
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if((!n && !m) || (*nptr != '-' && *nptr != '/' &&
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*nptr != '\0' && *nptr != ','))
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die("Couldn't parse pattern %s\n", argv[3]);
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}
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seed = (m > 0) ? m : (unsigned int)time(NULL);
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srand(seed);thrown_frame = 0;
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printf("Seed: %u\n", seed);
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printf("Threads: %d\n", dec_cfg.threads);
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if(!(infile = fopen(argv[1], "rb")))
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die("Failed to open %s for reading", argv[1]);
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if(!(outfile = fopen(argv[2], "wb")))
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die("Failed to open %s for writing", argv[2]);
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/* Read file header */
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if(!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ
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&& file_hdr[0]=='D' && file_hdr[1]=='K' && file_hdr[2]=='I'
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&& file_hdr[3]=='F'))
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die("%s is not an IVF file.", argv[1]);
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printf("Using %s\n",vpx_codec_iface_name(interface));
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/* Initialize codec */
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flags = VPX_CODEC_USE_ERROR_CONCEALMENT;
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res = vpx_codec_dec_init(&codec, interface, &dec_cfg, flags);
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if(res)
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die_codec(&codec, "Failed to initialize decoder");
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/* Read each frame */
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while(fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) {
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int frame_sz = mem_get_le32(frame_hdr);
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vpx_codec_iter_t iter = NULL;
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vpx_image_t *img;
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frame_cnt++;
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if(frame_sz > sizeof(frame))
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die("Frame %d data too big for example code buffer", frame_sz);
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if(fread(frame, 1, frame_sz, infile) != frame_sz)
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die("Frame %d failed to read complete frame", frame_cnt);
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/* Decide whether to throw parts of the frame or the whole frame
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depending on the drop mode */
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thrown_frame = 0;
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kept_frame = 0;
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switch (mode)
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{
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case 0:
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if (m - (frame_cnt-1)%m <= n)
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{
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frame_sz = 0;
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}
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break;
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case 1:
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if (frame_cnt >= n && frame_cnt <= m)
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{
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frame_sz = 0;
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}
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break;
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case 2:
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throw_packets(frame, &frame_sz, n, &thrown_frame, &kept_frame);
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break;
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default: break;
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}
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if (mode < 2)
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{
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if (frame_sz == 0)
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{
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putc('X', stdout);
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thrown_frame++;
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}
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else
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{
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putc('.', stdout);
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kept_frame++;
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}
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}
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thrown += thrown_frame;
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kept += kept_frame;
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fflush(stdout);
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/* Decode the frame */
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if(vpx_codec_decode(&codec, frame, frame_sz, NULL, 0))
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die_codec(&codec, "Failed to decode frame");
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/* Write decoded data to disk */
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while((img = vpx_codec_get_frame(&codec, &iter))) {
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unsigned int plane, y;
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for(plane=0; plane < 3; plane++) {
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unsigned char *buf =img->planes[plane];
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for(y=0; y < (plane ? (img->d_h + 1) >> 1 : img->d_h); y++) {
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(void) fwrite(buf, 1, (plane ? (img->d_w + 1) >> 1 : img->d_w),
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outfile);
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buf += img->stride[plane];
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}
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}
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}
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}
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printf("Processed %d frames.\n",frame_cnt);
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if(vpx_codec_destroy(&codec))
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die_codec(&codec, "Failed to destroy codec");
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fclose(outfile);
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fclose(infile);
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return EXIT_SUCCESS;
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}
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