| /* |
| * Copyright Stefano Sabatini <stefasab gmail com> |
| * Copyright Anton Khirnov <anton khirnov net> |
| * Copyright 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 |
| */ |
| |
| #include "libavutil/channel_layout.h" |
| #include "libavutil/avassert.h" |
| #include "libavutil/common.h" |
| #include "libavutil/imgutils.h" |
| #include "libavcodec/avcodec.h" |
| |
| #include "avfilter.h" |
| #include "internal.h" |
| #include "audio.h" |
| #include "avcodec.h" |
| |
| void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr) |
| { |
| if (ptr->extended_data != ptr->data) |
| av_freep(&ptr->extended_data); |
| av_free(ptr->data[0]); |
| av_free(ptr); |
| } |
| |
| static void copy_video_props(AVFilterBufferRefVideoProps *dst, AVFilterBufferRefVideoProps *src) { |
| *dst = *src; |
| if (src->qp_table) { |
| int qsize = src->qp_table_size; |
| dst->qp_table = av_malloc(qsize); |
| memcpy(dst->qp_table, src->qp_table, qsize); |
| } |
| } |
| |
| AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask) |
| { |
| AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef)); |
| if (!ret) |
| return NULL; |
| *ret = *ref; |
| |
| ret->metadata = NULL; |
| av_dict_copy(&ret->metadata, ref->metadata, 0); |
| |
| if (ref->type == AVMEDIA_TYPE_VIDEO) { |
| ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps)); |
| if (!ret->video) { |
| av_free(ret); |
| return NULL; |
| } |
| copy_video_props(ret->video, ref->video); |
| ret->extended_data = ret->data; |
| } else if (ref->type == AVMEDIA_TYPE_AUDIO) { |
| ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps)); |
| if (!ret->audio) { |
| av_free(ret); |
| return NULL; |
| } |
| *ret->audio = *ref->audio; |
| |
| if (ref->extended_data && ref->extended_data != ref->data) { |
| int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout); |
| if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) * |
| nb_channels))) { |
| av_freep(&ret->audio); |
| av_freep(&ret); |
| return NULL; |
| } |
| memcpy(ret->extended_data, ref->extended_data, |
| sizeof(*ret->extended_data) * nb_channels); |
| } else |
| ret->extended_data = ret->data; |
| } |
| ret->perms &= pmask; |
| ret->buf->refcount ++; |
| return ret; |
| } |
| |
| void ff_free_pool(AVFilterPool *pool) |
| { |
| int i; |
| |
| av_assert0(pool->refcount > 0); |
| |
| for (i = 0; i < POOL_SIZE; i++) { |
| if (pool->pic[i]) { |
| AVFilterBufferRef *picref = pool->pic[i]; |
| /* free buffer: picrefs stored in the pool are not |
| * supposed to contain a free callback */ |
| av_assert0(!picref->buf->refcount); |
| av_freep(&picref->buf->data[0]); |
| av_freep(&picref->buf); |
| |
| av_freep(&picref->audio); |
| av_assert0(!picref->video || !picref->video->qp_table); |
| av_freep(&picref->video); |
| av_freep(&pool->pic[i]); |
| pool->count--; |
| } |
| } |
| pool->draining = 1; |
| |
| if (!--pool->refcount) { |
| av_assert0(!pool->count); |
| av_free(pool); |
| } |
| } |
| |
| static void store_in_pool(AVFilterBufferRef *ref) |
| { |
| int i; |
| AVFilterPool *pool= ref->buf->priv; |
| |
| av_assert0(ref->buf->data[0]); |
| av_assert0(pool->refcount>0); |
| |
| if (ref->video) |
| av_freep(&ref->video->qp_table); |
| |
| if (pool->count == POOL_SIZE) { |
| AVFilterBufferRef *ref1 = pool->pic[0]; |
| av_freep(&ref1->video); |
| av_freep(&ref1->audio); |
| av_freep(&ref1->buf->data[0]); |
| av_freep(&ref1->buf); |
| av_free(ref1); |
| memmove(&pool->pic[0], &pool->pic[1], sizeof(void*)*(POOL_SIZE-1)); |
| pool->count--; |
| pool->pic[POOL_SIZE-1] = NULL; |
| } |
| |
| for (i = 0; i < POOL_SIZE; i++) { |
| if (!pool->pic[i]) { |
| pool->pic[i] = ref; |
| pool->count++; |
| break; |
| } |
| } |
| if (pool->draining) { |
| ff_free_pool(pool); |
| } else |
| --pool->refcount; |
| } |
| |
| void avfilter_unref_buffer(AVFilterBufferRef *ref) |
| { |
| if (!ref) |
| return; |
| av_assert0(ref->buf->refcount > 0); |
| if (!(--ref->buf->refcount)) { |
| if (!ref->buf->free) { |
| store_in_pool(ref); |
| return; |
| } |
| ref->buf->free(ref->buf); |
| } |
| if (ref->extended_data != ref->data) |
| av_freep(&ref->extended_data); |
| if (ref->video) |
| av_freep(&ref->video->qp_table); |
| av_freep(&ref->video); |
| av_freep(&ref->audio); |
| av_dict_free(&ref->metadata); |
| av_free(ref); |
| } |
| |
| void avfilter_unref_bufferp(AVFilterBufferRef **ref) |
| { |
| avfilter_unref_buffer(*ref); |
| *ref = NULL; |
| } |
| |
| void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src) |
| { |
| // copy common properties |
| dst->pts = src->pts; |
| dst->pos = src->pos; |
| |
| switch (src->type) { |
| case AVMEDIA_TYPE_VIDEO: { |
| if (dst->video->qp_table) |
| av_freep(&dst->video->qp_table); |
| copy_video_props(dst->video, src->video); |
| break; |
| } |
| case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break; |
| default: break; |
| } |
| |
| av_dict_free(&dst->metadata); |
| av_dict_copy(&dst->metadata, src->metadata, 0); |
| } |
| |
| AVFilterBufferRef *ff_copy_buffer_ref(AVFilterLink *outlink, |
| AVFilterBufferRef *ref) |
| { |
| AVFilterBufferRef *buf; |
| int channels; |
| |
| switch (outlink->type) { |
| |
| case AVMEDIA_TYPE_VIDEO: |
| buf = ff_get_video_buffer(outlink, AV_PERM_WRITE, |
| ref->video->w, ref->video->h); |
| if(!buf) |
| return NULL; |
| av_image_copy(buf->data, buf->linesize, |
| (void*)ref->data, ref->linesize, |
| ref->format, ref->video->w, ref->video->h); |
| break; |
| |
| case AVMEDIA_TYPE_AUDIO: |
| buf = ff_get_audio_buffer(outlink, AV_PERM_WRITE, |
| ref->audio->nb_samples); |
| if(!buf) |
| return NULL; |
| channels = ref->audio->channels; |
| av_samples_copy(buf->extended_data, ref->buf->extended_data, |
| 0, 0, ref->audio->nb_samples, |
| channels, |
| ref->format); |
| break; |
| |
| default: |
| return NULL; |
| } |
| avfilter_copy_buffer_ref_props(buf, ref); |
| return buf; |
| } |