yading@10: /* yading@10: * Copyright (c) 2001 Fabrice Bellard yading@10: * Copyright (c) 2002-2004 Michael Niedermayer yading@10: * yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: /** yading@10: * @file yading@10: * Options definition for AVCodecContext. yading@10: */ yading@10: yading@10: #include "avcodec.h" yading@10: #include "internal.h" yading@10: #include "libavutil/avassert.h" yading@10: #include "libavutil/mem.h" yading@10: #include "libavutil/opt.h" yading@10: #include /* FLT_MIN, FLT_MAX */ yading@10: #include yading@10: yading@10: #include "options_table.h" yading@10: yading@10: static const char* context_to_name(void* ptr) { yading@10: AVCodecContext *avc= ptr; yading@10: yading@10: if(avc && avc->codec && avc->codec->name) yading@10: return avc->codec->name; yading@10: else yading@10: return "NULL"; yading@10: } yading@10: yading@10: static void *codec_child_next(void *obj, void *prev) yading@10: { yading@10: AVCodecContext *s = obj; yading@10: if (!prev && s->codec && s->codec->priv_class && s->priv_data) yading@10: return s->priv_data; yading@10: return NULL; yading@10: } yading@10: yading@10: static const AVClass *codec_child_class_next(const AVClass *prev) yading@10: { yading@10: AVCodec *c = NULL; yading@10: yading@10: /* find the codec that corresponds to prev */ yading@10: while (prev && (c = av_codec_next(c))) yading@10: if (c->priv_class == prev) yading@10: break; yading@10: yading@10: /* find next codec with priv options */ yading@10: while (c = av_codec_next(c)) yading@10: if (c->priv_class) yading@10: return c->priv_class; yading@10: return NULL; yading@10: } yading@10: yading@10: static AVClassCategory get_category(void *ptr) yading@10: { yading@10: AVCodecContext* avctx = ptr; yading@10: if(avctx->codec && avctx->codec->decode) return AV_CLASS_CATEGORY_DECODER; yading@10: else return AV_CLASS_CATEGORY_ENCODER; yading@10: } yading@10: yading@10: static const AVClass av_codec_context_class = { yading@10: .class_name = "AVCodecContext", yading@10: .item_name = context_to_name, yading@10: .option = options, yading@10: .version = LIBAVUTIL_VERSION_INT, yading@10: .log_level_offset_offset = offsetof(AVCodecContext, log_level_offset), yading@10: .child_next = codec_child_next, yading@10: .child_class_next = codec_child_class_next, yading@10: .category = AV_CLASS_CATEGORY_ENCODER, yading@10: .get_category = get_category, yading@10: }; yading@10: yading@10: #if FF_API_ALLOC_CONTEXT yading@10: void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType codec_type){ yading@10: AVCodec c= {0}; yading@10: c.type= codec_type; yading@10: avcodec_get_context_defaults3(s, &c); yading@10: } yading@10: #endif yading@10: yading@10: int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec) yading@10: { yading@10: int flags=0; yading@10: memset(s, 0, sizeof(AVCodecContext)); yading@10: yading@10: s->av_class = &av_codec_context_class; yading@10: yading@10: s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN; yading@10: if(s->codec_type == AVMEDIA_TYPE_AUDIO) yading@10: flags= AV_OPT_FLAG_AUDIO_PARAM; yading@10: else if(s->codec_type == AVMEDIA_TYPE_VIDEO) yading@10: flags= AV_OPT_FLAG_VIDEO_PARAM; yading@10: else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE) yading@10: flags= AV_OPT_FLAG_SUBTITLE_PARAM; yading@10: av_opt_set_defaults2(s, flags, flags); yading@10: yading@10: s->time_base = (AVRational){0,1}; yading@10: s->get_buffer2 = avcodec_default_get_buffer2; yading@10: s->get_format = avcodec_default_get_format; yading@10: s->execute = avcodec_default_execute; yading@10: s->execute2 = avcodec_default_execute2; yading@10: s->sample_aspect_ratio = (AVRational){0,1}; yading@10: s->pix_fmt = AV_PIX_FMT_NONE; yading@10: s->sample_fmt = AV_SAMPLE_FMT_NONE; yading@10: s->timecode_frame_start = -1; yading@10: yading@10: s->reordered_opaque = AV_NOPTS_VALUE; yading@10: if(codec && codec->priv_data_size){ yading@10: if(!s->priv_data){ yading@10: s->priv_data= av_mallocz(codec->priv_data_size); yading@10: if (!s->priv_data) { yading@10: return AVERROR(ENOMEM); yading@10: } yading@10: } yading@10: if(codec->priv_class){ yading@10: *(const AVClass**)s->priv_data = codec->priv_class; yading@10: av_opt_set_defaults(s->priv_data); yading@10: } yading@10: } yading@10: if (codec && codec->defaults) { yading@10: int ret; yading@10: const AVCodecDefault *d = codec->defaults; yading@10: while (d->key) { yading@10: ret = av_opt_set(s, d->key, d->value, 0); yading@10: av_assert0(ret >= 0); yading@10: d++; yading@10: } yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: AVCodecContext *avcodec_alloc_context3(const AVCodec *codec) yading@10: { yading@10: AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext)); yading@10: yading@10: if(avctx==NULL) return NULL; yading@10: yading@10: if(avcodec_get_context_defaults3(avctx, codec) < 0){ yading@10: av_free(avctx); yading@10: return NULL; yading@10: } yading@10: yading@10: return avctx; yading@10: } yading@10: yading@10: #if FF_API_ALLOC_CONTEXT yading@10: AVCodecContext *avcodec_alloc_context2(enum AVMediaType codec_type){ yading@10: AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext)); yading@10: yading@10: if(avctx==NULL) return NULL; yading@10: yading@10: avcodec_get_context_defaults2(avctx, codec_type); yading@10: yading@10: return avctx; yading@10: } yading@10: yading@10: void avcodec_get_context_defaults(AVCodecContext *s){ yading@10: avcodec_get_context_defaults2(s, AVMEDIA_TYPE_UNKNOWN); yading@10: } yading@10: yading@10: AVCodecContext *avcodec_alloc_context(void){ yading@10: return avcodec_alloc_context2(AVMEDIA_TYPE_UNKNOWN); yading@10: } yading@10: #endif yading@10: yading@10: int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src) yading@10: { yading@10: if (avcodec_is_open(dest)) { // check that the dest context is uninitialized yading@10: av_log(dest, AV_LOG_ERROR, yading@10: "Tried to copy AVCodecContext %p into already-initialized %p\n", yading@10: src, dest); yading@10: return AVERROR(EINVAL); yading@10: } yading@10: memcpy(dest, src, sizeof(*dest)); yading@10: yading@10: /* set values specific to opened codecs back to their default state */ yading@10: dest->priv_data = NULL; yading@10: dest->codec = NULL; yading@10: dest->slice_offset = NULL; yading@10: dest->hwaccel = NULL; yading@10: dest->thread_opaque = NULL; yading@10: dest->internal = NULL; yading@10: yading@10: /* reallocate values that should be allocated separately */ yading@10: dest->rc_eq = NULL; yading@10: dest->extradata = NULL; yading@10: dest->intra_matrix = NULL; yading@10: dest->inter_matrix = NULL; yading@10: dest->rc_override = NULL; yading@10: if (src->rc_eq) { yading@10: dest->rc_eq = av_strdup(src->rc_eq); yading@10: if (!dest->rc_eq) yading@10: return AVERROR(ENOMEM); yading@10: } yading@10: yading@10: #define alloc_and_copy_or_fail(obj, size, pad) \ yading@10: if (src->obj && size > 0) { \ yading@10: dest->obj = av_malloc(size + pad); \ yading@10: if (!dest->obj) \ yading@10: goto fail; \ yading@10: memcpy(dest->obj, src->obj, size); \ yading@10: if (pad) \ yading@10: memset(((uint8_t *) dest->obj) + size, 0, pad); \ yading@10: } yading@10: alloc_and_copy_or_fail(extradata, src->extradata_size, yading@10: FF_INPUT_BUFFER_PADDING_SIZE); yading@10: alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0); yading@10: alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0); yading@10: alloc_and_copy_or_fail(rc_override, src->rc_override_count * sizeof(*src->rc_override), 0); yading@10: #undef alloc_and_copy_or_fail yading@10: yading@10: return 0; yading@10: yading@10: fail: yading@10: av_freep(&dest->rc_override); yading@10: av_freep(&dest->intra_matrix); yading@10: av_freep(&dest->inter_matrix); yading@10: av_freep(&dest->extradata); yading@10: av_freep(&dest->rc_eq); yading@10: return AVERROR(ENOMEM); yading@10: } yading@10: yading@10: const AVClass *avcodec_get_class(void) yading@10: { yading@10: return &av_codec_context_class; yading@10: } yading@10: yading@10: #define FOFFSET(x) offsetof(AVFrame,x) yading@10: yading@10: static const AVOption frame_options[]={ yading@10: {"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0}, yading@10: {"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0}, yading@10: {"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0}, yading@10: {"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0}, yading@10: {"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, yading@10: {"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, yading@10: {"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0}, yading@10: {"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0}, yading@10: {"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, yading@10: {NULL}, yading@10: }; yading@10: yading@10: static const AVClass av_frame_class = { yading@10: .class_name = "AVFrame", yading@10: .item_name = NULL, yading@10: .option = frame_options, yading@10: .version = LIBAVUTIL_VERSION_INT, yading@10: }; yading@10: yading@10: const AVClass *avcodec_get_frame_class(void) yading@10: { yading@10: return &av_frame_class; yading@10: } yading@10: yading@10: #define SROFFSET(x) offsetof(AVSubtitleRect,x) yading@10: yading@10: static const AVOption subtitle_rect_options[]={ yading@10: {"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, yading@10: {"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, yading@10: {"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, yading@10: {"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, yading@10: {"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0}, yading@10: {"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"}, yading@10: {"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0}, yading@10: {NULL}, yading@10: }; yading@10: yading@10: static const AVClass av_subtitle_rect_class = { yading@10: .class_name = "AVSubtitleRect", yading@10: .item_name = NULL, yading@10: .option = subtitle_rect_options, yading@10: .version = LIBAVUTIL_VERSION_INT, yading@10: }; yading@10: yading@10: const AVClass *avcodec_get_subtitle_rect_class(void) yading@10: { yading@10: return &av_subtitle_rect_class; yading@10: }