1/*
2 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11
12/*
13@*INTRODUCTION
14 */
15#include <stdio.h>
16#include <stdlib.h>
17#include <stdarg.h>
18#include <string.h>
19#define VPX_CODEC_DISABLE_COMPAT 1
20#include "vpx/vpx_encoder.h"
21#include "vpx/vp8cx.h"
22#define interface (vpx_codec_vp8_cx())
23#define fourcc    0x30385056
24@EXTRA_INCLUDES
25
26#define IVF_FILE_HDR_SZ  (32)
27#define IVF_FRAME_HDR_SZ (12)
28
29static void mem_put_le16(char *mem, unsigned int val) {
30    mem[0] = val;
31    mem[1] = val>>8;
32}
33
34static void mem_put_le32(char *mem, unsigned int val) {
35    mem[0] = val;
36    mem[1] = val>>8;
37    mem[2] = val>>16;
38    mem[3] = val>>24;
39}
40
41static void die(const char *fmt, ...) {
42    va_list ap;
43
44    va_start(ap, fmt);
45    vprintf(fmt, ap);
46    if(fmt[strlen(fmt)-1] != '\n')
47        printf("\n");
48    exit(EXIT_FAILURE);
49}
50
51@DIE_CODEC
52
53static int read_frame(FILE *f, vpx_image_t *img) {
54    size_t nbytes, to_read;
55    int    res = 1;
56
57    to_read = img->w*img->h*3/2;
58    nbytes = fread(img->planes[0], 1, to_read, f);
59    if(nbytes != to_read) {
60        res = 0;
61        if(nbytes > 0)
62            printf("Warning: Read partial frame. Check your width & height!\n");
63    }
64    return res;
65}
66
67static void write_ivf_file_header(FILE *outfile,
68                                  const vpx_codec_enc_cfg_t *cfg,
69                                  int frame_cnt) {
70    char header[32];
71
72    if(cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
73        return;
74    header[0] = 'D';
75    header[1] = 'K';
76    header[2] = 'I';
77    header[3] = 'F';
78    mem_put_le16(header+4,  0);                   /* version */
79    mem_put_le16(header+6,  32);                  /* headersize */
80    mem_put_le32(header+8,  fourcc);              /* headersize */
81    mem_put_le16(header+12, cfg->g_w);            /* width */
82    mem_put_le16(header+14, cfg->g_h);            /* height */
83    mem_put_le32(header+16, cfg->g_timebase.den); /* rate */
84    mem_put_le32(header+20, cfg->g_timebase.num); /* scale */
85    mem_put_le32(header+24, frame_cnt);           /* length */
86    mem_put_le32(header+28, 0);                   /* unused */
87
88    (void) fwrite(header, 1, 32, outfile);
89}
90
91
92static void write_ivf_frame_header(FILE *outfile,
93                                   const vpx_codec_cx_pkt_t *pkt)
94{
95    char             header[12];
96    vpx_codec_pts_t  pts;
97
98    if(pkt->kind != VPX_CODEC_CX_FRAME_PKT)
99        return;
100
101    pts = pkt->data.frame.pts;
102    mem_put_le32(header, pkt->data.frame.sz);
103    mem_put_le32(header+4, pts&0xFFFFFFFF);
104    mem_put_le32(header+8, pts >> 32);
105
106    (void) fwrite(header, 1, 12, outfile);
107}
108
109int main(int argc, char **argv) {
110    FILE                *infile, *outfile;
111    vpx_codec_ctx_t      codec;
112    vpx_codec_enc_cfg_t  cfg;
113    int                  frame_cnt = 0;
114    vpx_image_t          raw;
115    vpx_codec_err_t      res;
116    long                 width;
117    long                 height;
118    int                  frame_avail;
119    int                  got_data;
120    int                  flags = 0;
121@@@@TWOPASS_VARS
122
123    /* Open files */
124@@@@USAGE
125    width = strtol(argv[1], NULL, 0);
126    height = strtol(argv[2], NULL, 0);
127    if(width < 16 || width%2 || height <16 || height%2)
128        die("Invalid resolution: %ldx%ld", width, height);
129    if(!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, width, height, 1))
130        die("Faile to allocate image", width, height);
131    if(!(outfile = fopen(argv[4], "wb")))
132        die("Failed to open %s for writing", argv[4]);
133
134    printf("Using %s\n",vpx_codec_iface_name(interface));
135
136@@@@ENC_DEF_CFG
137
138@@@@ENC_SET_CFG
139@@@@ENC_SET_CFG2
140
141    write_ivf_file_header(outfile, &cfg, 0);
142
143@@@@TWOPASS_LOOP_BEGIN
144
145        /* Open input file for this encoding pass */
146        if(!(infile = fopen(argv[3], "rb")))
147            die("Failed to open %s for reading", argv[3]);
148
149@@@@@@@@ENC_INIT
150
151        frame_avail = 1;
152        got_data = 0;
153        while(frame_avail || got_data) {
154            vpx_codec_iter_t iter = NULL;
155            const vpx_codec_cx_pkt_t *pkt;
156
157@@@@@@@@@@@@PER_FRAME_CFG
158@@@@@@@@@@@@ENCODE_FRAME
159            got_data = 0;
160            while( (pkt = vpx_codec_get_cx_data(&codec, &iter)) ) {
161                got_data = 1;
162                switch(pkt->kind) {
163@@@@@@@@@@@@@@@@PROCESS_FRAME
164@@@@@@@@@@@@@@@@PROCESS_STATS
165                default:
166                    break;
167                }
168                printf(pkt->kind == VPX_CODEC_CX_FRAME_PKT
169                       && (pkt->data.frame.flags & VPX_FRAME_IS_KEY)? "K":".");
170                fflush(stdout);
171            }
172            frame_cnt++;
173        }
174        printf("\n");
175        fclose(infile);
176@@@@TWOPASS_LOOP_END
177
178    printf("Processed %d frames.\n",frame_cnt-1);
179@@@@DESTROY
180
181    /* Try to rewrite the file header with the actual frame count */
182    if(!fseek(outfile, 0, SEEK_SET))
183        write_ivf_file_header(outfile, &cfg, frame_cnt-1);
184    fclose(outfile);
185    return EXIT_SUCCESS;
186}
187