FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/options.c
Date: 2022-07-05 19:52:29
Exec Total Coverage
Lines: 83 91 91.2%
Branches: 44 52 84.6%

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1 /*
2 * Copyright (c) 2001 Fabrice Bellard
3 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Options definition for AVCodecContext.
25 */
26
27 #include "config_components.h"
28
29 #include "avcodec.h"
30 #include "codec_internal.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/mem.h"
34 #include "libavutil/opt.h"
35 #include <string.h>
36
37 FF_DISABLE_DEPRECATION_WARNINGS
38 #include "options_table.h"
39 FF_ENABLE_DEPRECATION_WARNINGS
40
41 4359 static const char* context_to_name(void* ptr) {
42 4359 AVCodecContext *avc= ptr;
43
44
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4359 if (avc && avc->codec)
45 3610 return avc->codec->name;
46 else
47 749 return "NULL";
48 }
49
50 41 static void *codec_child_next(void *obj, void *prev)
51 {
52 41 AVCodecContext *s = obj;
53
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41 if (!prev && s->codec && s->codec->priv_class && s->priv_data)
54 21 return s->priv_data;
55 20 return NULL;
56 }
57
58 11193980 static const AVClass *codec_child_class_iterate(void **iter)
59 {
60 const AVCodec *c;
61 /* find next codec with priv options */
62
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55450792 while (c = av_codec_iterate(iter))
63
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55367945 if (c->priv_class)
64 11111133 return c->priv_class;
65 82847 return NULL;
66 }
67
68 4359 static AVClassCategory get_category(void *ptr)
69 {
70 4359 AVCodecContext* avctx = ptr;
71
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4359 if (avctx->codec && av_codec_is_decoder(avctx->codec))
72 3495 return AV_CLASS_CATEGORY_DECODER;
73 else
74 864 return AV_CLASS_CATEGORY_ENCODER;
75 }
76
77 static const AVClass av_codec_context_class = {
78 .class_name = "AVCodecContext",
79 .item_name = context_to_name,
80 .option = avcodec_options,
81 .version = LIBAVUTIL_VERSION_INT,
82 .log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
83 .child_next = codec_child_next,
84 .child_class_iterate = codec_child_class_iterate,
85 .category = AV_CLASS_CATEGORY_ENCODER,
86 .get_category = get_category,
87 };
88
89 52710 static int init_context_defaults(AVCodecContext *s, const AVCodec *codec)
90 {
91 52710 const FFCodec *const codec2 = ffcodec(codec);
92 52710 int flags=0;
93 52710 memset(s, 0, sizeof(AVCodecContext));
94
95 52710 s->av_class = &av_codec_context_class;
96
97
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52710 s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN;
98
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52710 if (codec) {
99 25053 s->codec = codec;
100 25053 s->codec_id = codec->id;
101 }
102
103
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52710 if(s->codec_type == AVMEDIA_TYPE_AUDIO)
104 2732 flags= AV_OPT_FLAG_AUDIO_PARAM;
105
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49978 else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
106 22212 flags= AV_OPT_FLAG_VIDEO_PARAM;
107
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27766 else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE)
108 109 flags= AV_OPT_FLAG_SUBTITLE_PARAM;
109 52710 av_opt_set_defaults2(s, flags, flags);
110
111 52710 av_channel_layout_uninit(&s->ch_layout);
112
113 52710 s->time_base = (AVRational){0,1};
114 52710 s->framerate = (AVRational){ 0, 1 };
115 52710 s->pkt_timebase = (AVRational){ 0, 1 };
116 52710 s->get_buffer2 = avcodec_default_get_buffer2;
117 52710 s->get_format = avcodec_default_get_format;
118 52710 s->get_encode_buffer = avcodec_default_get_encode_buffer;
119 52710 s->execute = avcodec_default_execute;
120 52710 s->execute2 = avcodec_default_execute2;
121 52710 s->sample_aspect_ratio = (AVRational){0,1};
122 52710 s->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
123 52710 s->pix_fmt = AV_PIX_FMT_NONE;
124 52710 s->sw_pix_fmt = AV_PIX_FMT_NONE;
125 52710 s->sample_fmt = AV_SAMPLE_FMT_NONE;
126
127 52710 s->reordered_opaque = AV_NOPTS_VALUE;
128
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52710 if(codec && codec2->priv_data_size){
129 7554 s->priv_data = av_mallocz(codec2->priv_data_size);
130
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7554 if (!s->priv_data)
131 return AVERROR(ENOMEM);
132
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7554 if(codec->priv_class){
133 2515 *(const AVClass**)s->priv_data = codec->priv_class;
134 2515 av_opt_set_defaults(s->priv_data);
135 }
136 }
137
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52710 if (codec && codec2->defaults) {
138 int ret;
139 164 const FFCodecDefault *d = codec2->defaults;
140
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328 while (d->key) {
141 164 ret = av_opt_set(s, d->key, d->value, 0);
142
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164 av_assert0(ret >= 0);
143 164 d++;
144 }
145 }
146 52710 return 0;
147 }
148
149 52710 AVCodecContext *avcodec_alloc_context3(const AVCodec *codec)
150 {
151 52710 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
152
153
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52710 if (!avctx)
154 return NULL;
155
156
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52710 if (init_context_defaults(avctx, codec) < 0) {
157 av_free(avctx);
158 return NULL;
159 }
160
161 52710 return avctx;
162 }
163
164 40607 void avcodec_free_context(AVCodecContext **pavctx)
165 {
166 40607 AVCodecContext *avctx = *pavctx;
167
168
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40607 if (!avctx)
169 13 return;
170
171 40594 avcodec_close(avctx);
172
173 40594 av_freep(&avctx->extradata);
174 40594 av_freep(&avctx->subtitle_header);
175 40594 av_freep(&avctx->intra_matrix);
176 40594 av_freep(&avctx->inter_matrix);
177 40594 av_freep(&avctx->rc_override);
178 40594 av_channel_layout_uninit(&avctx->ch_layout);
179
180 40594 av_freep(pavctx);
181 }
182
183 109973 const AVClass *avcodec_get_class(void)
184 {
185 109973 return &av_codec_context_class;
186 }
187
188 #if FF_API_GET_FRAME_CLASS
189 FF_DISABLE_DEPRECATION_WARNINGS
190 #define FOFFSET(x) offsetof(AVFrame,x)
191
192 static const AVOption frame_options[]={
193 {"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
194 {"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
195 {"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
196 {"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
197 {"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
198 {"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
199 {"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
200 #if FF_API_OLD_CHANNEL_LAYOUT
201 {"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
202 #endif
203 {"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
204 {NULL},
205 };
206
207 static const AVClass av_frame_class = {
208 .class_name = "AVFrame",
209 .item_name = NULL,
210 .option = frame_options,
211 .version = LIBAVUTIL_VERSION_INT,
212 };
213
214 const AVClass *avcodec_get_frame_class(void)
215 {
216 return &av_frame_class;
217 }
218 FF_ENABLE_DEPRECATION_WARNINGS
219 #endif
220
221 #define SROFFSET(x) offsetof(AVSubtitleRect,x)
222
223 static const AVOption subtitle_rect_options[]={
224 {"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
225 {"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
226 {"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
227 {"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
228 {"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
229 {"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
230 {"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
231 {NULL},
232 };
233
234 static const AVClass av_subtitle_rect_class = {
235 .class_name = "AVSubtitleRect",
236 .item_name = NULL,
237 .option = subtitle_rect_options,
238 .version = LIBAVUTIL_VERSION_INT,
239 };
240
241 const AVClass *avcodec_get_subtitle_rect_class(void)
242 {
243 return &av_subtitle_rect_class;
244 }
245