| 1 | /* |
| 2 | * Copyright Stefano Sabatini <stefasab gmail com> |
| 3 | * Copyright Anton Khirnov <anton khirnov net> |
| 4 | * Copyright Michael Niedermayer <michaelni gmx at> |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include "libavutil/channel_layout.h" |
| 24 | #include "libavutil/avassert.h" |
| 25 | #include "libavutil/common.h" |
| 26 | #include "libavutil/imgutils.h" |
| 27 | #include "libavutil/internal.h" |
| 28 | #include "libavcodec/avcodec.h" |
| 29 | |
| 30 | #include "avfilter.h" |
| 31 | #include "internal.h" |
| 32 | #include "audio.h" |
| 33 | #include "avcodec.h" |
| 34 | #include "version.h" |
| 35 | |
| 36 | #if FF_API_AVFILTERBUFFER |
| 37 | void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr) |
| 38 | { |
| 39 | if (ptr->extended_data != ptr->data) |
| 40 | av_freep(&ptr->extended_data); |
| 41 | av_free(ptr->data[0]); |
| 42 | av_free(ptr); |
| 43 | } |
| 44 | |
| 45 | static void copy_video_props(AVFilterBufferRefVideoProps *dst, AVFilterBufferRefVideoProps *src) { |
| 46 | *dst = *src; |
| 47 | if (src->qp_table) { |
| 48 | int qsize = src->qp_table_size; |
| 49 | dst->qp_table = av_malloc(qsize); |
| 50 | memcpy(dst->qp_table, src->qp_table, qsize); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask) |
| 55 | { |
| 56 | AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef)); |
| 57 | if (!ret) |
| 58 | return NULL; |
| 59 | *ret = *ref; |
| 60 | |
| 61 | ret->metadata = NULL; |
| 62 | av_dict_copy(&ret->metadata, ref->metadata, 0); |
| 63 | |
| 64 | if (ref->type == AVMEDIA_TYPE_VIDEO) { |
| 65 | ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps)); |
| 66 | if (!ret->video) { |
| 67 | av_free(ret); |
| 68 | return NULL; |
| 69 | } |
| 70 | copy_video_props(ret->video, ref->video); |
| 71 | ret->extended_data = ret->data; |
| 72 | } else if (ref->type == AVMEDIA_TYPE_AUDIO) { |
| 73 | ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps)); |
| 74 | if (!ret->audio) { |
| 75 | av_free(ret); |
| 76 | return NULL; |
| 77 | } |
| 78 | *ret->audio = *ref->audio; |
| 79 | |
| 80 | if (ref->extended_data && ref->extended_data != ref->data) { |
| 81 | int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout); |
| 82 | if (!(ret->extended_data = av_malloc_array(sizeof(*ret->extended_data), |
| 83 | nb_channels))) { |
| 84 | av_freep(&ret->audio); |
| 85 | av_freep(&ret); |
| 86 | return NULL; |
| 87 | } |
| 88 | memcpy(ret->extended_data, ref->extended_data, |
| 89 | sizeof(*ret->extended_data) * nb_channels); |
| 90 | } else |
| 91 | ret->extended_data = ret->data; |
| 92 | } |
| 93 | ret->perms &= pmask; |
| 94 | ret->buf->refcount ++; |
| 95 | return ret; |
| 96 | } |
| 97 | |
| 98 | void avfilter_unref_buffer(AVFilterBufferRef *ref) |
| 99 | { |
| 100 | if (!ref) |
| 101 | return; |
| 102 | av_assert0(ref->buf->refcount > 0); |
| 103 | if (!(--ref->buf->refcount)) |
| 104 | ref->buf->free(ref->buf); |
| 105 | if (ref->extended_data != ref->data) |
| 106 | av_freep(&ref->extended_data); |
| 107 | if (ref->video) |
| 108 | av_freep(&ref->video->qp_table); |
| 109 | av_freep(&ref->video); |
| 110 | av_freep(&ref->audio); |
| 111 | av_dict_free(&ref->metadata); |
| 112 | av_free(ref); |
| 113 | } |
| 114 | |
| 115 | void avfilter_unref_bufferp(AVFilterBufferRef **ref) |
| 116 | { |
| 117 | FF_DISABLE_DEPRECATION_WARNINGS |
| 118 | avfilter_unref_buffer(*ref); |
| 119 | FF_ENABLE_DEPRECATION_WARNINGS |
| 120 | *ref = NULL; |
| 121 | } |
| 122 | |
| 123 | int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src) |
| 124 | { |
| 125 | dst->pts = src->pts; |
| 126 | dst->pos = av_frame_get_pkt_pos(src); |
| 127 | dst->format = src->format; |
| 128 | |
| 129 | av_dict_free(&dst->metadata); |
| 130 | av_dict_copy(&dst->metadata, av_frame_get_metadata(src), 0); |
| 131 | |
| 132 | switch (dst->type) { |
| 133 | case AVMEDIA_TYPE_VIDEO: |
| 134 | dst->video->w = src->width; |
| 135 | dst->video->h = src->height; |
| 136 | dst->video->sample_aspect_ratio = src->sample_aspect_ratio; |
| 137 | dst->video->interlaced = src->interlaced_frame; |
| 138 | dst->video->top_field_first = src->top_field_first; |
| 139 | dst->video->key_frame = src->key_frame; |
| 140 | dst->video->pict_type = src->pict_type; |
| 141 | break; |
| 142 | case AVMEDIA_TYPE_AUDIO: |
| 143 | dst->audio->sample_rate = src->sample_rate; |
| 144 | dst->audio->channel_layout = src->channel_layout; |
| 145 | break; |
| 146 | default: |
| 147 | return AVERROR(EINVAL); |
| 148 | } |
| 149 | |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, const AVFilterBufferRef *src) |
| 154 | { |
| 155 | // copy common properties |
| 156 | dst->pts = src->pts; |
| 157 | dst->pos = src->pos; |
| 158 | |
| 159 | switch (src->type) { |
| 160 | case AVMEDIA_TYPE_VIDEO: { |
| 161 | if (dst->video->qp_table) |
| 162 | av_freep(&dst->video->qp_table); |
| 163 | copy_video_props(dst->video, src->video); |
| 164 | break; |
| 165 | } |
| 166 | case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break; |
| 167 | default: break; |
| 168 | } |
| 169 | |
| 170 | av_dict_free(&dst->metadata); |
| 171 | av_dict_copy(&dst->metadata, src->metadata, 0); |
| 172 | } |
| 173 | #endif /* FF_API_AVFILTERBUFFER */ |