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/* |
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* Copyright (c) 2001 Fabrice Bellard |
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* Options definition for AVCodecContext. |
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*/ |
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#include "avcodec.h" |
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#include "internal.h" |
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#include "libavutil/avassert.h" |
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#include "libavutil/internal.h" |
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#include "libavutil/mem.h" |
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#include "libavutil/opt.h" |
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#include <string.h> |
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FF_DISABLE_DEPRECATION_WARNINGS |
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#include "options_table.h" |
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FF_ENABLE_DEPRECATION_WARNINGS |
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4329 |
static const char* context_to_name(void* ptr) { |
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4329 |
AVCodecContext *avc= ptr; |
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✓✗✓✓
|
4329 |
if (avc && avc->codec) |
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3910 |
return avc->codec->name; |
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else |
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return "NULL"; |
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} |
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static void *codec_child_next(void *obj, void *prev) |
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{ |
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AVCodecContext *s = obj; |
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✓✓✓✗ ✓✗✓✗
|
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if (!prev && s->codec && s->codec->priv_class && s->priv_data) |
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21 |
return s->priv_data; |
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return NULL; |
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} |
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#if FF_API_CHILD_CLASS_NEXT |
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static const AVClass *codec_child_class_next(const AVClass *prev) |
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{ |
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void *iter = NULL; |
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const AVCodec *c = NULL; |
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/* find the codec that corresponds to prev */ |
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while (prev && (c = av_codec_iterate(&iter))) |
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if (c->priv_class == prev) |
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break; |
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/* find next codec with priv options */ |
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while (c = av_codec_iterate(&iter)) |
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if (c->priv_class) |
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return c->priv_class; |
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return NULL; |
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} |
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#endif |
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10220282 |
static const AVClass *codec_child_class_iterate(void **iter) |
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{ |
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const AVCodec *c; |
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/* find next codec with priv options */ |
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✓✓ |
51318174 |
while (c = av_codec_iterate(iter)) |
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✓✓ |
51239616 |
if (c->priv_class) |
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10141724 |
return c->priv_class; |
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78558 |
return NULL; |
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} |
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4329 |
static AVClassCategory get_category(void *ptr) |
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{ |
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4329 |
AVCodecContext* avctx = ptr; |
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✓✓✓✓
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4329 |
if(avctx->codec && avctx->codec->decode) return AV_CLASS_CATEGORY_DECODER; |
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535 |
else return AV_CLASS_CATEGORY_ENCODER; |
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} |
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static const AVClass av_codec_context_class = { |
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.class_name = "AVCodecContext", |
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.item_name = context_to_name, |
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.option = avcodec_options, |
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.version = LIBAVUTIL_VERSION_INT, |
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.log_level_offset_offset = offsetof(AVCodecContext, log_level_offset), |
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.child_next = codec_child_next, |
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#if FF_API_CHILD_CLASS_NEXT |
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.child_class_next = codec_child_class_next, |
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#endif |
102 |
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.child_class_iterate = codec_child_class_iterate, |
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.category = AV_CLASS_CATEGORY_ENCODER, |
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.get_category = get_category, |
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}; |
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|
52019 |
static int init_context_defaults(AVCodecContext *s, const AVCodec *codec) |
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{ |
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52019 |
int flags=0; |
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52019 |
memset(s, 0, sizeof(AVCodecContext)); |
111 |
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52019 |
s->av_class = &av_codec_context_class; |
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✓✓ |
52019 |
s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN; |
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✓✓ |
52019 |
if (codec) { |
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12542 |
s->codec = codec; |
117 |
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12542 |
s->codec_id = codec->id; |
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} |
119 |
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✓✓ |
52019 |
if(s->codec_type == AVMEDIA_TYPE_AUDIO) |
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2634 |
flags= AV_OPT_FLAG_AUDIO_PARAM; |
122 |
✓✓ |
49385 |
else if(s->codec_type == AVMEDIA_TYPE_VIDEO) |
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9817 |
flags= AV_OPT_FLAG_VIDEO_PARAM; |
124 |
✓✓ |
39568 |
else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE) |
125 |
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91 |
flags= AV_OPT_FLAG_SUBTITLE_PARAM; |
126 |
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52019 |
av_opt_set_defaults2(s, flags, flags); |
127 |
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128 |
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52019 |
s->time_base = (AVRational){0,1}; |
129 |
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52019 |
s->framerate = (AVRational){ 0, 1 }; |
130 |
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52019 |
s->pkt_timebase = (AVRational){ 0, 1 }; |
131 |
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52019 |
s->get_buffer2 = avcodec_default_get_buffer2; |
132 |
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52019 |
s->get_format = avcodec_default_get_format; |
133 |
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52019 |
s->get_encode_buffer = avcodec_default_get_encode_buffer; |
134 |
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52019 |
s->execute = avcodec_default_execute; |
135 |
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52019 |
s->execute2 = avcodec_default_execute2; |
136 |
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52019 |
s->sample_aspect_ratio = (AVRational){0,1}; |
137 |
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52019 |
s->pix_fmt = AV_PIX_FMT_NONE; |
138 |
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52019 |
s->sw_pix_fmt = AV_PIX_FMT_NONE; |
139 |
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52019 |
s->sample_fmt = AV_SAMPLE_FMT_NONE; |
140 |
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141 |
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52019 |
s->reordered_opaque = AV_NOPTS_VALUE; |
142 |
✓✓✓✓
|
52019 |
if(codec && codec->priv_data_size){ |
143 |
|
7226 |
s->priv_data = av_mallocz(codec->priv_data_size); |
144 |
✗✓ |
7226 |
if (!s->priv_data) |
145 |
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return AVERROR(ENOMEM); |
146 |
✓✓ |
7226 |
if(codec->priv_class){ |
147 |
|
2390 |
*(const AVClass**)s->priv_data = codec->priv_class; |
148 |
|
2390 |
av_opt_set_defaults(s->priv_data); |
149 |
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} |
150 |
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} |
151 |
✓✓✓✓
|
52019 |
if (codec && codec->defaults) { |
152 |
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int ret; |
153 |
|
189 |
const AVCodecDefault *d = codec->defaults; |
154 |
✓✓ |
378 |
while (d->key) { |
155 |
|
189 |
ret = av_opt_set(s, d->key, d->value, 0); |
156 |
✗✓ |
189 |
av_assert0(ret >= 0); |
157 |
|
189 |
d++; |
158 |
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} |
159 |
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} |
160 |
|
52019 |
return 0; |
161 |
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} |
162 |
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163 |
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#if FF_API_GET_CONTEXT_DEFAULTS |
164 |
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int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec) |
165 |
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{ |
166 |
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return init_context_defaults(s, codec); |
167 |
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} |
168 |
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#endif |
169 |
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|
170 |
|
52019 |
AVCodecContext *avcodec_alloc_context3(const AVCodec *codec) |
171 |
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{ |
172 |
|
52019 |
AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext)); |
173 |
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|
174 |
✗✓ |
52019 |
if (!avctx) |
175 |
|
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return NULL; |
176 |
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|
177 |
✗✓ |
52019 |
if (init_context_defaults(avctx, codec) < 0) { |
178 |
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av_free(avctx); |
179 |
|
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return NULL; |
180 |
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} |
181 |
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182 |
|
52019 |
return avctx; |
183 |
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} |
184 |
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185 |
|
51890 |
void avcodec_free_context(AVCodecContext **pavctx) |
186 |
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{ |
187 |
|
51890 |
AVCodecContext *avctx = *pavctx; |
188 |
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|
189 |
✓✓ |
51890 |
if (!avctx) |
190 |
|
3 |
return; |
191 |
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192 |
|
51887 |
avcodec_close(avctx); |
193 |
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194 |
|
51887 |
av_freep(&avctx->extradata); |
195 |
|
51887 |
av_freep(&avctx->subtitle_header); |
196 |
|
51887 |
av_freep(&avctx->intra_matrix); |
197 |
|
51887 |
av_freep(&avctx->inter_matrix); |
198 |
|
51887 |
av_freep(&avctx->rc_override); |
199 |
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|
200 |
|
51887 |
av_freep(pavctx); |
201 |
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} |
202 |
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203 |
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#if FF_API_COPY_CONTEXT |
204 |
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static void copy_context_reset(AVCodecContext *avctx) |
205 |
|
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{ |
206 |
|
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int i; |
207 |
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|
208 |
|
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av_opt_free(avctx); |
209 |
|
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#if FF_API_CODED_FRAME |
210 |
|
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FF_DISABLE_DEPRECATION_WARNINGS |
211 |
|
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av_frame_free(&avctx->coded_frame); |
212 |
|
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FF_ENABLE_DEPRECATION_WARNINGS |
213 |
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#endif |
214 |
|
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av_freep(&avctx->rc_override); |
215 |
|
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av_freep(&avctx->intra_matrix); |
216 |
|
|
av_freep(&avctx->inter_matrix); |
217 |
|
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av_freep(&avctx->extradata); |
218 |
|
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av_freep(&avctx->subtitle_header); |
219 |
|
|
av_buffer_unref(&avctx->hw_frames_ctx); |
220 |
|
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av_buffer_unref(&avctx->hw_device_ctx); |
221 |
|
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for (i = 0; i < avctx->nb_coded_side_data; i++) |
222 |
|
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av_freep(&avctx->coded_side_data[i].data); |
223 |
|
|
av_freep(&avctx->coded_side_data); |
224 |
|
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avctx->subtitle_header_size = 0; |
225 |
|
|
avctx->nb_coded_side_data = 0; |
226 |
|
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avctx->extradata_size = 0; |
227 |
|
|
} |
228 |
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|
229 |
|
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int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src) |
230 |
|
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{ |
231 |
|
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const AVCodec *orig_codec = dest->codec; |
232 |
|
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uint8_t *orig_priv_data = dest->priv_data; |
233 |
|
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|
234 |
|
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if (avcodec_is_open(dest)) { // check that the dest context is uninitialized |
235 |
|
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av_log(dest, AV_LOG_ERROR, |
236 |
|
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"Tried to copy AVCodecContext %p into already-initialized %p\n", |
237 |
|
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src, dest); |
238 |
|
|
return AVERROR(EINVAL); |
239 |
|
|
} |
240 |
|
|
|
241 |
|
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copy_context_reset(dest); |
242 |
|
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|
243 |
|
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memcpy(dest, src, sizeof(*dest)); |
244 |
|
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av_opt_copy(dest, src); |
245 |
|
|
|
246 |
|
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dest->priv_data = orig_priv_data; |
247 |
|
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dest->codec = orig_codec; |
248 |
|
|
|
249 |
|
|
if (orig_priv_data && src->codec && src->codec->priv_class && |
250 |
|
|
dest->codec && dest->codec->priv_class) |
251 |
|
|
av_opt_copy(orig_priv_data, src->priv_data); |
252 |
|
|
|
253 |
|
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|
254 |
|
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/* set values specific to opened codecs back to their default state */ |
255 |
|
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dest->slice_offset = NULL; |
256 |
|
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dest->hwaccel = NULL; |
257 |
|
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dest->internal = NULL; |
258 |
|
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#if FF_API_CODED_FRAME |
259 |
|
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FF_DISABLE_DEPRECATION_WARNINGS |
260 |
|
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dest->coded_frame = NULL; |
261 |
|
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FF_ENABLE_DEPRECATION_WARNINGS |
262 |
|
|
#endif |
263 |
|
|
|
264 |
|
|
/* reallocate values that should be allocated separately */ |
265 |
|
|
dest->extradata = NULL; |
266 |
|
|
dest->coded_side_data = NULL; |
267 |
|
|
dest->intra_matrix = NULL; |
268 |
|
|
dest->inter_matrix = NULL; |
269 |
|
|
dest->rc_override = NULL; |
270 |
|
|
dest->subtitle_header = NULL; |
271 |
|
|
dest->hw_frames_ctx = NULL; |
272 |
|
|
dest->hw_device_ctx = NULL; |
273 |
|
|
dest->nb_coded_side_data = 0; |
274 |
|
|
|
275 |
|
|
#define alloc_and_copy_or_fail(obj, size, pad) \ |
276 |
|
|
if (src->obj && size > 0) { \ |
277 |
|
|
dest->obj = av_malloc(size + pad); \ |
278 |
|
|
if (!dest->obj) \ |
279 |
|
|
goto fail; \ |
280 |
|
|
memcpy(dest->obj, src->obj, size); \ |
281 |
|
|
if (pad) \ |
282 |
|
|
memset(((uint8_t *) dest->obj) + size, 0, pad); \ |
283 |
|
|
} |
284 |
|
|
alloc_and_copy_or_fail(extradata, src->extradata_size, |
285 |
|
|
AV_INPUT_BUFFER_PADDING_SIZE); |
286 |
|
|
dest->extradata_size = src->extradata_size; |
287 |
|
|
alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0); |
288 |
|
|
alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0); |
289 |
|
|
alloc_and_copy_or_fail(rc_override, src->rc_override_count * sizeof(*src->rc_override), 0); |
290 |
|
|
alloc_and_copy_or_fail(subtitle_header, src->subtitle_header_size, 1); |
291 |
|
|
av_assert0(dest->subtitle_header_size == src->subtitle_header_size); |
292 |
|
|
#undef alloc_and_copy_or_fail |
293 |
|
|
|
294 |
|
|
if (src->hw_frames_ctx) { |
295 |
|
|
dest->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx); |
296 |
|
|
if (!dest->hw_frames_ctx) |
297 |
|
|
goto fail; |
298 |
|
|
} |
299 |
|
|
|
300 |
|
|
return 0; |
301 |
|
|
|
302 |
|
|
fail: |
303 |
|
|
copy_context_reset(dest); |
304 |
|
|
return AVERROR(ENOMEM); |
305 |
|
|
} |
306 |
|
|
#endif |
307 |
|
|
|
308 |
|
104403 |
const AVClass *avcodec_get_class(void) |
309 |
|
|
{ |
310 |
|
104403 |
return &av_codec_context_class; |
311 |
|
|
} |
312 |
|
|
|
313 |
|
|
#if FF_API_GET_FRAME_CLASS |
314 |
|
|
#define FOFFSET(x) offsetof(AVFrame,x) |
315 |
|
|
|
316 |
|
|
static const AVOption frame_options[]={ |
317 |
|
|
{"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0}, |
318 |
|
|
{"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0}, |
319 |
|
|
{"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0}, |
320 |
|
|
{"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0}, |
321 |
|
|
{"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
322 |
|
|
{"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
323 |
|
|
{"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0}, |
324 |
|
|
{"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0}, |
325 |
|
|
{"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
326 |
|
|
{NULL}, |
327 |
|
|
}; |
328 |
|
|
|
329 |
|
|
static const AVClass av_frame_class = { |
330 |
|
|
.class_name = "AVFrame", |
331 |
|
|
.item_name = NULL, |
332 |
|
|
.option = frame_options, |
333 |
|
|
.version = LIBAVUTIL_VERSION_INT, |
334 |
|
|
}; |
335 |
|
|
|
336 |
|
|
const AVClass *avcodec_get_frame_class(void) |
337 |
|
|
{ |
338 |
|
|
return &av_frame_class; |
339 |
|
|
} |
340 |
|
|
#endif |
341 |
|
|
|
342 |
|
|
#define SROFFSET(x) offsetof(AVSubtitleRect,x) |
343 |
|
|
|
344 |
|
|
static const AVOption subtitle_rect_options[]={ |
345 |
|
|
{"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
346 |
|
|
{"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
347 |
|
|
{"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
348 |
|
|
{"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
349 |
|
|
{"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
350 |
|
|
{"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"}, |
351 |
|
|
{"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0}, |
352 |
|
|
{NULL}, |
353 |
|
|
}; |
354 |
|
|
|
355 |
|
|
static const AVClass av_subtitle_rect_class = { |
356 |
|
|
.class_name = "AVSubtitleRect", |
357 |
|
|
.item_name = NULL, |
358 |
|
|
.option = subtitle_rect_options, |
359 |
|
|
.version = LIBAVUTIL_VERSION_INT, |
360 |
|
|
}; |
361 |
|
|
|
362 |
|
|
const AVClass *avcodec_get_subtitle_rect_class(void) |
363 |
|
|
{ |
364 |
|
|
return &av_subtitle_rect_class; |
365 |
|
|
} |