From f06de3b0a6ef59f1ebfeb90cd5d46e2cc3416863 Mon Sep 17 00:00:00 2001 From: Tom Finegan Date: Wed, 30 Apr 2014 16:41:16 -0700 Subject: [PATCH] Remove decode_with_partial_drops example. Bitrotted and non-functional. Does one of two things: Crashes or reports errors and quits. Change-Id: Ia9c391ecd6e716b183d925247bf3dc0509ce4586 --- examples.mk | 5 - examples/decode_with_partial_drops.c | 328 ----------------------------------- 2 files changed, 333 deletions(-) delete mode 100644 examples/decode_with_partial_drops.c diff --git a/examples.mk b/examples.mk index f6e7c00..b92c732 100644 --- a/examples.mk +++ b/examples.mk @@ -146,11 +146,6 @@ decode_with_drops.SRCS += vpx_ports/mem_ops_aligned.h endif decode_with_drops.GUID = CE5C53C4-8DDA-438A-86ED-0DDD3CDB8D26 decode_with_drops.DESCRIPTION = Drops frames while decoding -ifeq ($(CONFIG_VP8_DECODER),yes) -EXAMPLES-$(CONFIG_ERROR_CONCEALMENT) += decode_with_partial_drops.c -endif -decode_with_partial_drops.GUID = 61C2D026-5754-46AC-916F-1343ECC5537E -decode_with_partial_drops.DESCRIPTION = Drops parts of frames while decoding EXAMPLES-$(CONFIG_ENCODERS) += set_maps.c set_maps.SRCS += ivfenc.h ivfenc.c set_maps.SRCS += tools_common.h tools_common.c diff --git a/examples/decode_with_partial_drops.c b/examples/decode_with_partial_drops.c deleted file mode 100644 index d7132de..0000000 --- a/examples/decode_with_partial_drops.c +++ /dev/null @@ -1,328 +0,0 @@ -/* - * Copyright (c) 2010 The WebM project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -// Decode With Partial Drops Example -// ========================= -// -// 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. -// -// 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. -// -// 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: -// -// Making The Drop Decision -// ------------------------ -// The example decides whether to drop the frame based on the current -// frame number, immediately before decoding the frame. - -#include -#include -#include -#include -#define VPX_CODEC_DISABLE_COMPAT 1 -#include "./vpx_config.h" -#include "vpx/vp8dx.h" -#include "vpx/vpx_decoder.h" -#define interface (vpx_codec_vp8_dx()) -#include - - -#define IVF_FILE_HDR_SZ (32) -#define IVF_FRAME_HDR_SZ (12) - -static unsigned int mem_get_le32(const unsigned char *mem) { - return (mem[3] << 24)|(mem[2] << 16)|(mem[1] << 8)|(mem[0]); -} - -static void die(const char *fmt, ...) { - va_list ap; - - va_start(ap, fmt); - vprintf(fmt, ap); - if(fmt[strlen(fmt)-1] != '\n') - printf("\n"); - exit(EXIT_FAILURE); -} - -static void die_codec(vpx_codec_ctx_t *ctx, const char *s) { - const char *detail = vpx_codec_error_detail(ctx); - - printf("%s: %s\n", s, vpx_codec_error(ctx)); - if(detail) - printf(" %s\n",detail); - exit(EXIT_FAILURE); -} - -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; -} - -int main(int argc, char **argv) { - FILE *infile, *outfile; - vpx_codec_ctx_t codec; - int flags = 0, frame_cnt = 0; - unsigned char file_hdr[IVF_FILE_HDR_SZ]; - unsigned char frame_hdr[IVF_FRAME_HDR_SZ]; - unsigned char frame[256*1024]; - vpx_codec_err_t res; - 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}; - - (void)res; - /* Open files */ - if(argc < 4 || argc > 6) - die("Usage: %s [-t ] \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); - if(!(infile = fopen(argv[1], "rb"))) - die("Failed to open %s for reading", argv[1]); - if(!(outfile = fopen(argv[2], "wb"))) - die("Failed to open %s for writing", argv[2]); - - /* Read file header */ - if(!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ - && file_hdr[0]=='D' && file_hdr[1]=='K' && file_hdr[2]=='I' - && file_hdr[3]=='F')) - die("%s is not an IVF file.", argv[1]); - - printf("Using %s\n",vpx_codec_iface_name(interface)); - /* 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"); - - - /* Read each frame */ - while(fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) { - int frame_sz = mem_get_le32(frame_hdr); - vpx_codec_iter_t iter = NULL; - vpx_image_t *img; - - - frame_cnt++; - if(frame_sz > sizeof(frame)) - die("Frame %d data too big for example code buffer", frame_sz); - if(fread(frame, 1, frame_sz, infile) != frame_sz) - die("Frame %d failed to read complete frame", frame_cnt); - - /* 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); - /* Decode the frame */ - if(vpx_codec_decode(&codec, frame, frame_sz, NULL, 0)) - die_codec(&codec, "Failed to decode frame"); - - /* Write decoded data to disk */ - while((img = vpx_codec_get_frame(&codec, &iter))) { - unsigned int plane, y; - - for(plane=0; plane < 3; plane++) { - unsigned char *buf =img->planes[plane]; - - for(y=0; y < (plane ? (img->d_h + 1) >> 1 : img->d_h); y++) { - (void) fwrite(buf, 1, (plane ? (img->d_w + 1) >> 1 : img->d_w), - outfile); - buf += img->stride[plane]; - } - } - } - } - printf("Processed %d frames.\n",frame_cnt); - if(vpx_codec_destroy(&codec)) - die_codec(&codec, "Failed to destroy codec"); - - fclose(outfile); - fclose(infile); - return EXIT_SUCCESS; -} -- 2.7.4