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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 "avcodec_internal.h" | ||
31 | #include "codec_internal.h" | ||
32 | #include "libavutil/avassert.h" | ||
33 | #include "libavutil/internal.h" | ||
34 | #include "libavutil/mem.h" | ||
35 | #include "libavutil/opt.h" | ||
36 | #include <string.h> | ||
37 | |||
38 | FF_DISABLE_DEPRECATION_WARNINGS | ||
39 | #include "options_table.h" | ||
40 | FF_ENABLE_DEPRECATION_WARNINGS | ||
41 | |||
42 | 3719 | static const char* context_to_name(void* ptr) { | |
43 | 3719 | AVCodecContext *avc= ptr; | |
44 | |||
45 |
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3719 | if (avc && avc->codec) |
46 | 3713 | return avc->codec->name; | |
47 | else | ||
48 | 6 | return "NULL"; | |
49 | } | ||
50 | |||
51 | 25095 | static void *codec_child_next(void *obj, void *prev) | |
52 | { | ||
53 | 25095 | AVCodecContext *s = obj; | |
54 |
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25095 | if (!prev && s->codec && s->codec->priv_class && s->priv_data) |
55 | 4859 | return s->priv_data; | |
56 | 20236 | return NULL; | |
57 | } | ||
58 | |||
59 | 12859497 | static const AVClass *codec_child_class_iterate(void **iter) | |
60 | { | ||
61 | const AVCodec *c; | ||
62 | /* find next codec with priv options */ | ||
63 |
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63451302 | while (c = av_codec_iterate(iter)) |
64 |
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63360192 | if (c->priv_class) |
65 | 12768387 | return c->priv_class; | |
66 | 91110 | return NULL; | |
67 | } | ||
68 | |||
69 | 3719 | static AVClassCategory get_category(void *ptr) | |
70 | { | ||
71 | 3719 | AVCodecContext* avctx = ptr; | |
72 |
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3719 | if (avctx->codec && av_codec_is_decoder(avctx->codec)) |
73 | 3573 | return AV_CLASS_CATEGORY_DECODER; | |
74 | else | ||
75 | 146 | return AV_CLASS_CATEGORY_ENCODER; | |
76 | } | ||
77 | |||
78 | static const AVClass av_codec_context_class = { | ||
79 | .class_name = "AVCodecContext", | ||
80 | .item_name = context_to_name, | ||
81 | .option = avcodec_options, | ||
82 | .version = LIBAVUTIL_VERSION_INT, | ||
83 | .log_level_offset_offset = offsetof(AVCodecContext, log_level_offset), | ||
84 | .child_next = codec_child_next, | ||
85 | .child_class_iterate = codec_child_class_iterate, | ||
86 | .category = AV_CLASS_CATEGORY_ENCODER, | ||
87 | .get_category = get_category, | ||
88 | }; | ||
89 | |||
90 | 57133 | static int init_context_defaults(AVCodecContext *s, const AVCodec *codec) | |
91 | { | ||
92 | 57133 | const FFCodec *const codec2 = ffcodec(codec); | |
93 | 57133 | int flags=0; | |
94 | 57133 | memset(s, 0, sizeof(AVCodecContext)); | |
95 | |||
96 | 57133 | s->av_class = &av_codec_context_class; | |
97 | |||
98 |
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57133 | s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN; |
99 |
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57133 | if (codec) { |
100 | 33701 | s->codec = codec; | |
101 | 33701 | s->codec_id = codec->id; | |
102 | } | ||
103 | |||
104 |
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57133 | if(s->codec_type == AVMEDIA_TYPE_AUDIO) |
105 | 4484 | flags= AV_OPT_FLAG_AUDIO_PARAM; | |
106 |
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52649 | else if(s->codec_type == AVMEDIA_TYPE_VIDEO) |
107 | 29049 | flags= AV_OPT_FLAG_VIDEO_PARAM; | |
108 |
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23600 | else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE) |
109 | 168 | flags= AV_OPT_FLAG_SUBTITLE_PARAM; | |
110 | 57133 | av_opt_set_defaults2(s, flags, flags); | |
111 | |||
112 | 57133 | av_channel_layout_uninit(&s->ch_layout); | |
113 | |||
114 | 57133 | s->time_base = (AVRational){0,1}; | |
115 | 57133 | s->framerate = (AVRational){ 0, 1 }; | |
116 | 57133 | s->pkt_timebase = (AVRational){ 0, 1 }; | |
117 | 57133 | s->get_buffer2 = avcodec_default_get_buffer2; | |
118 | 57133 | s->get_format = avcodec_default_get_format; | |
119 | 57133 | s->get_encode_buffer = avcodec_default_get_encode_buffer; | |
120 | 57133 | s->execute = avcodec_default_execute; | |
121 | 57133 | s->execute2 = avcodec_default_execute2; | |
122 | 57133 | s->sample_aspect_ratio = (AVRational){0,1}; | |
123 | 57133 | s->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; | |
124 | 57133 | s->pix_fmt = AV_PIX_FMT_NONE; | |
125 | 57133 | s->sw_pix_fmt = AV_PIX_FMT_NONE; | |
126 | 57133 | s->sample_fmt = AV_SAMPLE_FMT_NONE; | |
127 | |||
128 |
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57133 | if(codec && codec2->priv_data_size){ |
129 | 15063 | s->priv_data = av_mallocz(codec2->priv_data_size); | |
130 |
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15063 | if (!s->priv_data) |
131 | ✗ | return AVERROR(ENOMEM); | |
132 |
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15063 | if(codec->priv_class){ |
133 | 4825 | *(const AVClass**)s->priv_data = codec->priv_class; | |
134 | 4825 | av_opt_set_defaults(s->priv_data); | |
135 | } | ||
136 | } | ||
137 |
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57133 | if (codec && codec2->defaults) { |
138 | int ret; | ||
139 | 169 | const FFCodecDefault *d = codec2->defaults; | |
140 |
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338 | while (d->key) { |
141 | 169 | ret = av_opt_set(s, d->key, d->value, 0); | |
142 |
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169 | av_assert0(ret >= 0); |
143 | 169 | d++; | |
144 | } | ||
145 | } | ||
146 | 57133 | return 0; | |
147 | } | ||
148 | |||
149 | 57133 | AVCodecContext *avcodec_alloc_context3(const AVCodec *codec) | |
150 | { | ||
151 | 57133 | AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext)); | |
152 | |||
153 |
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57133 | if (!avctx) |
154 | ✗ | return NULL; | |
155 | |||
156 |
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57133 | if (init_context_defaults(avctx, codec) < 0) { |
157 | ✗ | av_free(avctx); | |
158 | ✗ | return NULL; | |
159 | } | ||
160 | |||
161 | 57133 | return avctx; | |
162 | } | ||
163 | |||
164 | 72874 | void avcodec_free_context(AVCodecContext **pavctx) | |
165 | { | ||
166 | 72874 | AVCodecContext *avctx = *pavctx; | |
167 | |||
168 |
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72874 | if (!avctx) |
169 | 15741 | return; | |
170 | |||
171 | 57133 | ff_codec_close(avctx); | |
172 | |||
173 | 57133 | av_freep(&avctx->extradata); | |
174 | 57133 | av_freep(&avctx->subtitle_header); | |
175 | 57133 | av_freep(&avctx->intra_matrix); | |
176 | 57133 | av_freep(&avctx->chroma_intra_matrix); | |
177 | 57133 | av_freep(&avctx->inter_matrix); | |
178 | 57133 | av_freep(&avctx->rc_override); | |
179 | 57133 | av_channel_layout_uninit(&avctx->ch_layout); | |
180 | 57133 | av_frame_side_data_free( | |
181 | &avctx->decoded_side_data, &avctx->nb_decoded_side_data); | ||
182 | |||
183 | 57133 | av_freep(pavctx); | |
184 | } | ||
185 | |||
186 | 119107 | const AVClass *avcodec_get_class(void) | |
187 | { | ||
188 | 119107 | return &av_codec_context_class; | |
189 | } | ||
190 | |||
191 | #define SROFFSET(x) offsetof(AVSubtitleRect,x) | ||
192 | |||
193 | static const AVOption subtitle_rect_options[]={ | ||
194 | {"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, | ||
195 | {"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, | ||
196 | {"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, | ||
197 | {"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, | ||
198 | {"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, | ||
199 | {"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, .unit = "flags"}, | ||
200 | {"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0}, | ||
201 | {NULL}, | ||
202 | }; | ||
203 | |||
204 | static const AVClass av_subtitle_rect_class = { | ||
205 | .class_name = "AVSubtitleRect", | ||
206 | .item_name = NULL, | ||
207 | .option = subtitle_rect_options, | ||
208 | .version = LIBAVUTIL_VERSION_INT, | ||
209 | }; | ||
210 | |||
211 | ✗ | const AVClass *avcodec_get_subtitle_rect_class(void) | |
212 | { | ||
213 | ✗ | return &av_subtitle_rect_class; | |
214 | } | ||
215 |