1 /*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11 #include <stdlib.h>
12 #include <string.h>
13 #include <assert.h>
14
15 #include "aom_ports/mem_ops.h"
16 #include "common/ivfdec.h"
17 #include "common/obudec.h"
18 #include "common/tools_common.h"
19 #include "common/video_reader.h"
20 #include "common/webmdec.h"
21
22 struct AvxVideoReaderStruct {
23 AvxVideoInfo info;
24 struct AvxInputContext input_ctx;
25 struct ObuDecInputContext obu_ctx;
26 struct WebmInputContext webm_ctx;
27 uint8_t *buffer;
28 size_t buffer_size;
29 size_t frame_size;
30 aom_codec_pts_t pts;
31 };
32
aom_video_reader_open(const char * filename)33 AvxVideoReader *aom_video_reader_open(const char *filename) {
34 AvxVideoReader *reader = NULL;
35 FILE *const file = fopen(filename, "rb");
36 if (!file) return NULL; // Can't open file
37
38 reader = (AvxVideoReader *)calloc(1, sizeof(*reader));
39 if (!reader) {
40 fclose(file);
41 return NULL; // Can't allocate AvxVideoReader
42 }
43
44 reader->input_ctx.filename = filename;
45 reader->input_ctx.file = file;
46 reader->obu_ctx.avx_ctx = &reader->input_ctx;
47 reader->obu_ctx.is_annexb = 1;
48
49 if (file_is_ivf(&reader->input_ctx)) {
50 reader->input_ctx.file_type = FILE_TYPE_IVF;
51 reader->info.codec_fourcc = reader->input_ctx.fourcc;
52 reader->info.frame_width = reader->input_ctx.width;
53 reader->info.frame_height = reader->input_ctx.height;
54 #if CONFIG_WEBM_IO
55 } else if (file_is_webm(&reader->webm_ctx, &reader->input_ctx)) {
56 reader->input_ctx.file_type = FILE_TYPE_WEBM;
57 reader->info.codec_fourcc = reader->input_ctx.fourcc;
58 reader->info.frame_width = reader->input_ctx.width;
59 reader->info.frame_height = reader->input_ctx.height;
60 #endif
61 } else if (file_is_obu(&reader->obu_ctx)) {
62 reader->input_ctx.file_type = FILE_TYPE_OBU;
63 // assume AV1
64 reader->info.codec_fourcc = AV1_FOURCC;
65 reader->info.is_annexb = reader->obu_ctx.is_annexb;
66 } else {
67 fclose(file);
68 free(reader);
69 return NULL; // Unknown file type
70 }
71
72 return reader;
73 }
74
aom_video_reader_close(AvxVideoReader * reader)75 void aom_video_reader_close(AvxVideoReader *reader) {
76 if (reader) {
77 fclose(reader->input_ctx.file);
78 if (reader->input_ctx.file_type == FILE_TYPE_OBU) {
79 obudec_free(&reader->obu_ctx);
80 }
81 free(reader->buffer);
82 free(reader);
83 }
84 }
85
aom_video_reader_read_frame(AvxVideoReader * reader)86 int aom_video_reader_read_frame(AvxVideoReader *reader) {
87 if (reader->input_ctx.file_type == FILE_TYPE_IVF) {
88 return !ivf_read_frame(reader->input_ctx.file, &reader->buffer,
89 &reader->frame_size, &reader->buffer_size,
90 &reader->pts);
91 } else if (reader->input_ctx.file_type == FILE_TYPE_OBU) {
92 return !obudec_read_temporal_unit(&reader->obu_ctx, &reader->buffer,
93 &reader->frame_size,
94 &reader->buffer_size);
95 #if CONFIG_WEBM_IO
96 } else if (reader->input_ctx.file_type == FILE_TYPE_WEBM) {
97 return !webm_read_frame(&reader->webm_ctx, &reader->buffer,
98 &reader->frame_size, &reader->buffer_size);
99 #endif
100 } else {
101 assert(0);
102 return 0;
103 }
104 }
105
aom_video_reader_get_frame(AvxVideoReader * reader,size_t * size)106 const uint8_t *aom_video_reader_get_frame(AvxVideoReader *reader,
107 size_t *size) {
108 if (size) *size = reader->frame_size;
109
110 return reader->buffer;
111 }
112
aom_video_reader_get_frame_pts(AvxVideoReader * reader)113 int64_t aom_video_reader_get_frame_pts(AvxVideoReader *reader) {
114 return (int64_t)reader->pts;
115 }
116
aom_video_reader_get_file(AvxVideoReader * reader)117 FILE *aom_video_reader_get_file(AvxVideoReader *reader) {
118 return reader->input_ctx.file;
119 }
120
aom_video_reader_get_info(AvxVideoReader * reader)121 const AvxVideoInfo *aom_video_reader_get_info(AvxVideoReader *reader) {
122 return &reader->info;
123 }
124