1 /*
2 * Copyright © 2018, VideoLAN and dav1d authors
3 * Copyright © 2018, Two Orioles, LLC
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this
10 * list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "config.h"
29
30 #include <errno.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34
35 #include "common/attributes.h"
36 #include "common/intops.h"
37
38 #include "input/input.h"
39 #include "input/demuxer.h"
40
41 struct DemuxerContext {
42 DemuxerPriv *data;
43 const Demuxer *impl;
44 };
45
46 extern const Demuxer ivf_demuxer;
47 extern const Demuxer annexb_demuxer;
48 extern const Demuxer section5_demuxer;
49 static const Demuxer *const demuxers[] = {
50 &ivf_demuxer,
51 &annexb_demuxer,
52 §ion5_demuxer,
53 NULL
54 };
55
input_open(DemuxerContext ** const c_out,const char * const name,const char * const filename,unsigned fps[2],unsigned * const num_frames,unsigned timebase[2])56 int input_open(DemuxerContext **const c_out,
57 const char *const name, const char *const filename,
58 unsigned fps[2], unsigned *const num_frames, unsigned timebase[2])
59 {
60 const Demuxer *impl;
61 DemuxerContext *c;
62 int res, i;
63
64 if (name) {
65 for (i = 0; demuxers[i]; i++) {
66 if (!strcmp(demuxers[i]->name, name)) {
67 impl = demuxers[i];
68 break;
69 }
70 }
71 if (!demuxers[i]) {
72 fprintf(stderr, "Failed to find demuxer named \"%s\"\n", name);
73 return DAV1D_ERR(ENOPROTOOPT);
74 }
75 } else {
76 int probe_sz = 0;
77 for (i = 0; demuxers[i]; i++)
78 probe_sz = imax(probe_sz, demuxers[i]->probe_sz);
79 uint8_t *const probe_data = malloc(probe_sz);
80 if (!probe_data) {
81 fprintf(stderr, "Failed to allocate memory\n");
82 return DAV1D_ERR(ENOMEM);
83 }
84 FILE *f = fopen(filename, "rb");
85 res = !!fread(probe_data, 1, probe_sz, f);
86 fclose(f);
87 if (!res) {
88 free(probe_data);
89 fprintf(stderr, "Failed to read probe data\n");
90 return errno ? DAV1D_ERR(errno) : DAV1D_ERR(EIO);
91 }
92
93 for (i = 0; demuxers[i]; i++) {
94 if (demuxers[i]->probe(probe_data)) {
95 impl = demuxers[i];
96 break;
97 }
98 }
99 free(probe_data);
100 if (!demuxers[i]) {
101 fprintf(stderr,
102 "Failed to probe demuxer for file %s\n",
103 filename);
104 return DAV1D_ERR(ENOPROTOOPT);
105 }
106 }
107
108 if (!(c = calloc(1, sizeof(DemuxerContext) + impl->priv_data_size))) {
109 fprintf(stderr, "Failed to allocate memory\n");
110 return DAV1D_ERR(ENOMEM);
111 }
112 c->impl = impl;
113 c->data = (DemuxerPriv *) &c[1];
114 if ((res = impl->open(c->data, filename, fps, num_frames, timebase)) < 0) {
115 free(c);
116 return res;
117 }
118 *c_out = c;
119
120 return 0;
121 }
122
input_read(DemuxerContext * const ctx,Dav1dData * const data)123 int input_read(DemuxerContext *const ctx, Dav1dData *const data) {
124 return ctx->impl->read(ctx->data, data);
125 }
126
input_close(DemuxerContext * const ctx)127 void input_close(DemuxerContext *const ctx) {
128 ctx->impl->close(ctx->data);
129 free(ctx);
130 }
131