ref: 9fdfb8e92823abadc54d825d0603a7e9fd344520
dir: /examples/decoder_tmpl.c/
/* * Copyright (c) 2010 The VP8 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. */ /* @*INTRODUCTION */ #include <stdio.h> #include <stdlib.h> #include <stdarg.h> #include <string.h> #define VPX_CODEC_DISABLE_COMPAT 1 #include "vpx/vpx_decoder.h" #include "vpx/vp8dx.h" #define interface (&vpx_codec_vp8_dx_algo) @EXTRA_INCLUDES #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); } @DIE_CODEC 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; @@@@EXTRA_VARS (void)res; /* Open files */ @@@@USAGE 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 */ fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile); if(!(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)); @@@@DEC_INIT /* 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); @@@@@@@@PRE_DECODE @@@@@@@@DECODE /* Write decoded data to disk */ @@@@@@@@GET_FRAME unsigned int plane, y; @@@@@@@@@@@@PROCESS_DX } } printf("Processed %d frames.\n",frame_cnt); @@@@DESTROY fclose(outfile); fclose(infile); return EXIT_SUCCESS; }