| /* |
| * Copyright (c) 2001 Fabrice Bellard |
| * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * Options definition for AVCodecContext. |
| */ |
| |
| #include "config_components.h" |
| |
| #include "avcodec.h" |
| #include "avcodec_internal.h" |
| #include "codec_internal.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/mem.h" |
| #include "libavutil/opt.h" |
| #include <string.h> |
| |
| FF_DISABLE_DEPRECATION_WARNINGS |
| #include "options_table.h" |
| FF_ENABLE_DEPRECATION_WARNINGS |
| |
| static const char* context_to_name(void* ptr) { |
| AVCodecContext *avc= ptr; |
| |
| if (avc && avc->codec) |
| return avc->codec->name; |
| else |
| return "NULL"; |
| } |
| |
| static void *codec_child_next(void *obj, void *prev) |
| { |
| AVCodecContext *s = obj; |
| if (!prev && s->codec && s->codec->priv_class && s->priv_data) |
| return s->priv_data; |
| return NULL; |
| } |
| |
| static const AVClass *codec_child_class_iterate(void **iter) |
| { |
| const AVCodec *c; |
| /* find next codec with priv options */ |
| while (c = av_codec_iterate(iter)) |
| if (c->priv_class) |
| return c->priv_class; |
| return NULL; |
| } |
| |
| static AVClassCategory get_category(void *ptr) |
| { |
| AVCodecContext* avctx = ptr; |
| if (avctx->codec && av_codec_is_decoder(avctx->codec)) |
| return AV_CLASS_CATEGORY_DECODER; |
| else |
| return AV_CLASS_CATEGORY_ENCODER; |
| } |
| |
| static const AVClass av_codec_context_class = { |
| .class_name = "AVCodecContext", |
| .item_name = context_to_name, |
| .option = avcodec_options, |
| .version = LIBAVUTIL_VERSION_INT, |
| .log_level_offset_offset = offsetof(AVCodecContext, log_level_offset), |
| .child_next = codec_child_next, |
| .child_class_iterate = codec_child_class_iterate, |
| .category = AV_CLASS_CATEGORY_ENCODER, |
| .get_category = get_category, |
| }; |
| |
| static int init_context_defaults(AVCodecContext *s, const AVCodec *codec) |
| { |
| const FFCodec *const codec2 = ffcodec(codec); |
| int flags=0; |
| memset(s, 0, sizeof(AVCodecContext)); |
| |
| s->av_class = &av_codec_context_class; |
| |
| s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN; |
| if (codec) { |
| s->codec = codec; |
| s->codec_id = codec->id; |
| } |
| |
| if(s->codec_type == AVMEDIA_TYPE_AUDIO) |
| flags= AV_OPT_FLAG_AUDIO_PARAM; |
| else if(s->codec_type == AVMEDIA_TYPE_VIDEO) |
| flags= AV_OPT_FLAG_VIDEO_PARAM; |
| else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE) |
| flags= AV_OPT_FLAG_SUBTITLE_PARAM; |
| av_opt_set_defaults2(s, flags, flags); |
| |
| av_channel_layout_uninit(&s->ch_layout); |
| |
| s->time_base = (AVRational){0,1}; |
| s->framerate = (AVRational){ 0, 1 }; |
| s->pkt_timebase = (AVRational){ 0, 1 }; |
| s->get_buffer2 = avcodec_default_get_buffer2; |
| s->get_format = avcodec_default_get_format; |
| s->get_encode_buffer = avcodec_default_get_encode_buffer; |
| s->execute = avcodec_default_execute; |
| s->execute2 = avcodec_default_execute2; |
| s->sample_aspect_ratio = (AVRational){0,1}; |
| s->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; |
| s->pix_fmt = AV_PIX_FMT_NONE; |
| s->sw_pix_fmt = AV_PIX_FMT_NONE; |
| s->sample_fmt = AV_SAMPLE_FMT_NONE; |
| |
| if(codec && codec2->priv_data_size){ |
| s->priv_data = av_mallocz(codec2->priv_data_size); |
| if (!s->priv_data) |
| return AVERROR(ENOMEM); |
| if(codec->priv_class){ |
| *(const AVClass**)s->priv_data = codec->priv_class; |
| av_opt_set_defaults(s->priv_data); |
| } |
| } |
| if (codec && codec2->defaults) { |
| int ret; |
| const FFCodecDefault *d = codec2->defaults; |
| while (d->key) { |
| ret = av_opt_set(s, d->key, d->value, 0); |
| av_assert0(ret >= 0); |
| d++; |
| } |
| } |
| return 0; |
| } |
| |
| AVCodecContext *avcodec_alloc_context3(const AVCodec *codec) |
| { |
| AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext)); |
| |
| if (!avctx) |
| return NULL; |
| |
| if (init_context_defaults(avctx, codec) < 0) { |
| av_free(avctx); |
| return NULL; |
| } |
| |
| return avctx; |
| } |
| |
| void avcodec_free_context(AVCodecContext **pavctx) |
| { |
| AVCodecContext *avctx = *pavctx; |
| |
| if (!avctx) |
| return; |
| |
| ff_codec_close(avctx); |
| |
| av_freep(&avctx->extradata); |
| av_freep(&avctx->subtitle_header); |
| av_freep(&avctx->intra_matrix); |
| av_freep(&avctx->chroma_intra_matrix); |
| av_freep(&avctx->inter_matrix); |
| av_freep(&avctx->rc_override); |
| av_channel_layout_uninit(&avctx->ch_layout); |
| av_frame_side_data_free( |
| &avctx->decoded_side_data, &avctx->nb_decoded_side_data); |
| |
| av_freep(pavctx); |
| } |
| |
| const AVClass *avcodec_get_class(void) |
| { |
| return &av_codec_context_class; |
| } |
| |
| #define SROFFSET(x) offsetof(AVSubtitleRect,x) |
| |
| static const AVOption subtitle_rect_options[]={ |
| {"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
| {"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
| {"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
| {"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
| {"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, |
| {"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, .unit = "flags"}, |
| {"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0}, |
| {NULL}, |
| }; |
| |
| static const AVClass av_subtitle_rect_class = { |
| .class_name = "AVSubtitleRect", |
| .item_name = NULL, |
| .option = subtitle_rect_options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| const AVClass *avcodec_get_subtitle_rect_class(void) |
| { |
| return &av_subtitle_rect_class; |
| } |