1 /*
2 * Copyright (c) 2001 Fabrice Bellard
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 * THE SOFTWARE.
21 */
22
23 #define MAX_SLICES 8
24
25 #include "config.h"
26
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 #if HAVE_UNISTD_H
32 #include <unistd.h>
33 #endif
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #include <sys/types.h>
38 #include <sys/stat.h>
39 #include <fcntl.h>
40
41 #include "libavcodec/avcodec.h"
42 #include "libavutil/pixdesc.h"
43 #include "libavutil/hash.h"
44 #include "libavutil/bswap.h"
45
46 static int header = 0;
47
decode(AVCodecContext * dec_ctx,AVFrame * frame,AVPacket * pkt)48 static int decode(AVCodecContext *dec_ctx, AVFrame *frame,
49 AVPacket *pkt)
50 {
51 static uint64_t frame_cnt = 0;
52 int ret;
53
54 ret = avcodec_send_packet(dec_ctx, pkt);
55 if (ret < 0) {
56 fprintf(stderr, "Error sending a packet for decoding: %s\n", av_err2str(ret));
57 return ret;
58 }
59
60 while (ret >= 0) {
61 const AVPixFmtDescriptor *desc;
62 char sum[AV_HASH_MAX_SIZE * 2 + 1];
63 struct AVHashContext *hash;
64
65 ret = avcodec_receive_frame(dec_ctx, frame);
66 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
67 return 0;
68 } else if (ret < 0) {
69 fprintf(stderr, "Error during decoding: %s\n", av_err2str(ret));
70 return ret;
71 }
72
73 if (!header) {
74 printf(
75 "#format: frame checksums\n"
76 "#version: 2\n"
77 "#hash: MD5\n"
78 "#tb 0: 1/30\n"
79 "#media_type 0: video\n"
80 "#codec_id 0: rawvideo\n"
81 "#dimensions 0: 352x288\n"
82 "#sar 0: 128/117\n"
83 "#stream#, dts, pts, duration, size, hash\n");
84 header = 1;
85 }
86 desc = av_pix_fmt_desc_get(dec_ctx->pix_fmt);
87 if ((ret = av_hash_alloc(&hash, "md5")) < 0) {
88 return ret;
89 }
90 av_hash_init(hash);
91
92 for (int i = 0; i < frame->height; i++)
93 av_hash_update(hash, &frame->data[0][i * frame->linesize[0]], frame->width);
94 for (int i = 0; i < frame->height >> desc->log2_chroma_h; i++)
95 av_hash_update(hash, &frame->data[1][i * frame->linesize[1]], frame->width >> desc->log2_chroma_w);
96 for (int i = 0; i < frame->height >> desc->log2_chroma_h; i++)
97 av_hash_update(hash, &frame->data[2][i * frame->linesize[2]], frame->width >> desc->log2_chroma_w);
98
99 av_hash_final_hex(hash, sum, av_hash_get_size(hash) * 2 + 1);
100 printf("0, %10"PRId64", %10"PRId64", 1, %8d, %s\n",
101 frame_cnt, frame_cnt,
102 (frame->width * frame->height + 2 * (frame->height >> desc->log2_chroma_h) * (frame->width >> desc->log2_chroma_w)), sum);
103 frame_cnt += 1;
104 av_hash_freep(&hash);
105 }
106 return 0;
107 }
108
main(int argc,char ** argv)109 int main(int argc, char **argv)
110 {
111 const AVCodec *codec = NULL;
112 AVCodecContext *c = NULL;
113 AVFrame *frame = NULL;
114 unsigned int threads;
115 AVPacket *pkt;
116 FILE *file = NULL;
117 char * nal = NULL;
118 int nals = 0, ret = 0;
119 char *p;
120
121 if (argc < 3) {
122 fprintf(stderr, "Usage: %s <threads> <input file>\n", argv[0]);
123 return -1;
124 }
125
126 if (!(threads = strtoul(argv[1], NULL, 0)))
127 threads = 1;
128 else if (threads > MAX_SLICES)
129 threads = MAX_SLICES;
130
131 #ifdef _WIN32
132 setmode(fileno(stdout), O_BINARY);
133 #endif
134
135 if (!(pkt = av_packet_alloc())) {
136 return -1;
137 }
138
139 nal = av_malloc(MAX_SLICES * UINT16_MAX + AV_INPUT_BUFFER_PADDING_SIZE);
140 if (!nal)
141 goto err;
142 p = nal;
143
144 if (!(codec = avcodec_find_decoder(AV_CODEC_ID_H264))) {
145 fprintf(stderr, "Codec not found\n");
146 ret = -1;
147 goto err;
148 }
149
150 if (!(c = avcodec_alloc_context3(codec))) {
151 fprintf(stderr, "Could not allocate video codec context\n");
152 ret = -1;
153 goto err;
154 }
155
156 c->width = 352;
157 c->height = 288;
158
159 c->flags2 |= AV_CODEC_FLAG2_CHUNKS;
160 c->thread_type = FF_THREAD_SLICE;
161 c->thread_count = threads;
162
163 if ((ret = avcodec_open2(c, codec, NULL)) < 0) {
164 fprintf(stderr, "Could not open codec\n");
165 goto err;
166 }
167
168 #if HAVE_THREADS
169 if (c->active_thread_type != FF_THREAD_SLICE) {
170 fprintf(stderr, "Couldn't activate slice threading: %d\n", c->active_thread_type);
171 ret = -1;
172 goto err;
173 }
174 #else
175 fprintf(stderr, "WARN: not using threads, only checking decoding slice NALUs\n");
176 #endif
177
178 if (!(frame = av_frame_alloc())) {
179 fprintf(stderr, "Could not allocate video frame\n");
180 ret = -1;
181 goto err;
182 }
183
184 if (!(file = fopen(argv[2], "rb"))) {
185 fprintf(stderr, "Couldn't open NALU file: %s\n", argv[2]);
186 ret = -1;
187 goto err;
188 }
189
190 while(1) {
191 uint16_t size = 0;
192 size_t ret = fread(&size, 1, sizeof(uint16_t), file);
193 if (ret != sizeof(uint16_t))
194 break;
195
196 size = av_be2ne16(size);
197 ret = fread(p, 1, size, file);
198 if (ret != size) {
199 perror("Couldn't read data");
200 goto err;
201 }
202 p += ret;
203
204 if (++nals >= threads) {
205 int decret = 0;
206 pkt->data = nal;
207 pkt->size = p - nal;
208 if ((decret = decode(c, frame, pkt)) < 0) {
209 goto err;
210 }
211 memset(nal, 0, MAX_SLICES * UINT16_MAX + AV_INPUT_BUFFER_PADDING_SIZE);
212 nals = 0;
213 p = nal;
214 }
215 }
216
217 if (nals) {
218 pkt->data = nal;
219 pkt->size = p - nal;
220 if ((ret = decode(c, frame, pkt)) < 0) {
221 goto err;
222 }
223 }
224
225 ret = decode(c, frame, NULL);
226
227 err:
228 if (nal)
229 av_free(nal);
230 if (file)
231 fclose(file);
232 av_frame_free(&frame);
233 avcodec_free_context(&c);
234 av_packet_free(&pkt);
235
236 return ret;
237 }
238