2012-05-10 05:36:10 +00:00
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/*
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2012-05-22 19:44:31 +00:00
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* Copyright 2007 Bobby Bingham
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* Copyright Stefano Sabatini <stefasab gmail com>
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* Copyright Vitor Sessak <vitor1001 gmail com>
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*
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2012-05-16 00:27:31 +00:00
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* This file is part of FFmpeg.
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2012-05-10 05:36:10 +00:00
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*
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2012-05-16 00:27:31 +00:00
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* FFmpeg is free software; you can redistribute it and/or
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2012-05-10 05:36:10 +00:00
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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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2012-05-16 00:27:31 +00:00
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* FFmpeg is distributed in the hope that it will be useful,
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2012-05-10 05:36:10 +00:00
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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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2012-05-16 00:27:31 +00:00
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* License along with FFmpeg; if not, write to the Free Software
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2012-05-10 05:36:10 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2012-08-06 13:49:32 +00:00
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#include <string.h>
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2012-08-15 20:27:52 +00:00
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#include <stdio.h>
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2012-08-06 13:49:32 +00:00
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2012-07-29 16:43:45 +00:00
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#include "libavutil/avassert.h"
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2012-05-10 05:36:10 +00:00
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#include "libavutil/imgutils.h"
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2012-08-06 13:49:32 +00:00
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#include "libavutil/mem.h"
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2012-05-10 05:36:10 +00:00
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#include "avfilter.h"
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#include "internal.h"
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2012-05-19 08:37:56 +00:00
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#include "video.h"
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2012-05-10 05:36:10 +00:00
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2012-05-19 08:37:56 +00:00
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AVFilterBufferRef *ff_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
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2012-05-10 05:36:10 +00:00
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{
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2012-05-30 08:31:48 +00:00
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return ff_get_video_buffer(link->dst->outputs[0], perms, w, h);
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2012-05-10 05:36:10 +00:00
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}
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2012-05-19 08:37:56 +00:00
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AVFilterBufferRef *ff_default_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
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2012-05-10 05:36:10 +00:00
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{
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int linesize[4];
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uint8_t *data[4];
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2012-05-16 00:27:31 +00:00
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int i;
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2012-05-10 05:36:10 +00:00
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AVFilterBufferRef *picref = NULL;
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2012-05-16 00:27:31 +00:00
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AVFilterPool *pool = link->pool;
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2012-08-14 16:34:36 +00:00
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int full_perms = AV_PERM_READ | AV_PERM_WRITE | AV_PERM_PRESERVE |
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AV_PERM_REUSE | AV_PERM_REUSE2 | AV_PERM_ALIGN;
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av_assert1(!(perms & ~(full_perms | AV_PERM_NEG_LINESIZES)));
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2012-05-16 00:27:31 +00:00
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if (pool) {
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for (i = 0; i < POOL_SIZE; i++) {
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picref = pool->pic[i];
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if (picref && picref->buf->format == link->format && picref->buf->w == w && picref->buf->h == h) {
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AVFilterBuffer *pic = picref->buf;
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pool->pic[i] = NULL;
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pool->count--;
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2012-09-05 02:41:22 +00:00
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av_assert0(!picref->video->qp_table);
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2012-05-16 00:27:31 +00:00
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picref->video->w = w;
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picref->video->h = h;
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2012-08-14 16:34:36 +00:00
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picref->perms = full_perms;
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2012-05-16 00:27:31 +00:00
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picref->format = link->format;
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pic->refcount = 1;
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memcpy(picref->data, pic->data, sizeof(picref->data));
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memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize));
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pool->refcount++;
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return picref;
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}
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}
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} else {
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pool = link->pool = av_mallocz(sizeof(AVFilterPool));
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pool->refcount = 1;
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}
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2012-05-10 05:36:10 +00:00
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2012-05-16 00:27:31 +00:00
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// align: +2 is needed for swscaler, +16 to be SIMD-friendly
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if ((i = av_image_alloc(data, linesize, w, h, link->format, 32)) < 0)
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2012-05-10 05:36:10 +00:00
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return NULL;
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picref = avfilter_get_video_buffer_ref_from_arrays(data, linesize,
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2012-08-14 16:34:36 +00:00
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full_perms, w, h, link->format);
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2012-05-10 05:36:10 +00:00
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if (!picref) {
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av_free(data[0]);
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return NULL;
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}
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2012-05-16 00:27:31 +00:00
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memset(data[0], 128, i);
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picref->buf->priv = pool;
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picref->buf->free = NULL;
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pool->refcount++;
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2012-05-10 05:36:10 +00:00
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return picref;
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}
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AVFilterBufferRef *
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2012-05-16 00:27:31 +00:00
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avfilter_get_video_buffer_ref_from_arrays(uint8_t * const data[4], const int linesize[4], int perms,
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2012-10-06 10:10:34 +00:00
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int w, int h, enum AVPixelFormat format)
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2012-05-10 05:36:10 +00:00
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{
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AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer));
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AVFilterBufferRef *picref = av_mallocz(sizeof(AVFilterBufferRef));
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if (!pic || !picref)
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goto fail;
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picref->buf = pic;
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picref->buf->free = ff_avfilter_default_free_buffer;
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if (!(picref->video = av_mallocz(sizeof(AVFilterBufferRefVideoProps))))
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goto fail;
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pic->w = picref->video->w = w;
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pic->h = picref->video->h = h;
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/* make sure the buffer gets read permission or it's useless for output */
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picref->perms = perms | AV_PERM_READ;
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pic->refcount = 1;
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picref->type = AVMEDIA_TYPE_VIDEO;
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pic->format = picref->format = format;
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memcpy(pic->data, data, 4*sizeof(data[0]));
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memcpy(pic->linesize, linesize, 4*sizeof(linesize[0]));
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memcpy(picref->data, pic->data, sizeof(picref->data));
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memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize));
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pic-> extended_data = pic->data;
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picref->extended_data = picref->data;
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2012-05-16 12:57:59 +00:00
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picref->pts = AV_NOPTS_VALUE;
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2012-05-10 05:36:10 +00:00
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return picref;
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fail:
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if (picref && picref->video)
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av_free(picref->video);
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av_free(picref);
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av_free(pic);
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return NULL;
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}
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2012-05-30 08:31:48 +00:00
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AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
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2012-05-10 05:36:10 +00:00
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{
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AVFilterBufferRef *ret = NULL;
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av_unused char buf[16];
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2012-06-05 09:24:07 +00:00
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FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0);
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ff_tlog(NULL, " perms:%s w:%d h:%d\n", ff_get_ref_perms_string(buf, sizeof(buf), perms), w, h);
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2012-05-10 05:36:10 +00:00
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if (link->dstpad->get_video_buffer)
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ret = link->dstpad->get_video_buffer(link, perms, w, h);
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if (!ret)
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2012-05-19 08:37:56 +00:00
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ret = ff_default_get_video_buffer(link, perms, w, h);
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2012-05-10 05:36:10 +00:00
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if (ret)
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ret->type = AVMEDIA_TYPE_VIDEO;
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2012-06-05 09:24:07 +00:00
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FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " returning "); ff_tlog_ref(NULL, ret, 1);
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2012-05-10 05:36:10 +00:00
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return ret;
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}
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2012-07-08 15:29:42 +00:00
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int ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
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2012-05-10 05:36:10 +00:00
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{
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2012-07-14 15:09:43 +00:00
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AVFilterBufferRef *buf_out = avfilter_ref_buffer(picref, ~0);
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2012-07-08 15:29:42 +00:00
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if (!buf_out)
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return AVERROR(ENOMEM);
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return ff_start_frame(link->dst->outputs[0], buf_out);
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2012-05-10 05:36:10 +00:00
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}
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2012-07-26 22:51:12 +00:00
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// for filters that support (but don't require) outpic==inpic
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int ff_inplace_start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
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{
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AVFilterLink *outlink = inlink->dst->outputs[0];
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AVFilterBufferRef *outpicref = NULL, *for_next_filter;
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int ret = 0;
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2012-08-14 16:52:43 +00:00
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if (inpicref->perms & AV_PERM_WRITE) {
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2012-07-26 22:51:12 +00:00
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outpicref = avfilter_ref_buffer(inpicref, ~0);
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if (!outpicref)
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return AVERROR(ENOMEM);
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} else {
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outpicref = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
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if (!outpicref)
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return AVERROR(ENOMEM);
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avfilter_copy_buffer_ref_props(outpicref, inpicref);
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outpicref->video->w = outlink->w;
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outpicref->video->h = outlink->h;
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}
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for_next_filter = avfilter_ref_buffer(outpicref, ~0);
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if (for_next_filter)
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ret = ff_start_frame(outlink, for_next_filter);
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else
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ret = AVERROR(ENOMEM);
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if (ret < 0) {
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avfilter_unref_bufferp(&outpicref);
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return ret;
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}
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outlink->out_buf = outpicref;
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return 0;
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}
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2012-07-08 15:29:42 +00:00
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static int default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
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2012-05-10 05:36:10 +00:00
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{
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AVFilterLink *outlink = NULL;
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2012-06-12 19:25:10 +00:00
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if (inlink->dst->nb_outputs)
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2012-05-10 05:36:10 +00:00
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outlink = inlink->dst->outputs[0];
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2012-11-28 15:39:04 +00:00
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if (outlink && !inlink->dstpad->filter_frame) {
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2012-07-15 09:16:53 +00:00
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AVFilterBufferRef *buf_out;
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2012-05-30 08:31:48 +00:00
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outlink->out_buf = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
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2012-07-08 15:29:42 +00:00
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if (!outlink->out_buf)
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return AVERROR(ENOMEM);
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2012-05-10 05:36:10 +00:00
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avfilter_copy_buffer_ref_props(outlink->out_buf, picref);
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2012-06-14 11:12:18 +00:00
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outlink->out_buf->video->w = outlink->w;
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outlink->out_buf->video->h = outlink->h;
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2012-07-15 09:16:53 +00:00
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buf_out = avfilter_ref_buffer(outlink->out_buf, ~0);
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if (!buf_out)
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return AVERROR(ENOMEM);
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return ff_start_frame(outlink, buf_out);
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2012-05-10 05:36:10 +00:00
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}
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2012-07-08 15:29:42 +00:00
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return 0;
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}
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static void clear_link(AVFilterLink *link)
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{
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avfilter_unref_bufferp(&link->cur_buf);
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avfilter_unref_bufferp(&link->src_buf);
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avfilter_unref_bufferp(&link->out_buf);
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2012-07-29 16:43:45 +00:00
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link->cur_buf_copy = NULL; /* we do not own the reference */
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2012-05-10 05:36:10 +00:00
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}
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/* XXX: should we do the duplicating of the picture ref here, instead of
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* forcing the source filter to do it? */
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2012-07-08 15:29:42 +00:00
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int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
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2012-05-10 05:36:10 +00:00
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{
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2012-07-08 15:29:42 +00:00
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int (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
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2012-08-12 08:59:37 +00:00
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AVFilterPad *src = link->srcpad;
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2012-05-10 05:36:10 +00:00
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AVFilterPad *dst = link->dstpad;
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2012-08-12 08:59:37 +00:00
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int ret, perms;
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2012-05-16 00:27:31 +00:00
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AVFilterCommand *cmd= link->dst->command_queue;
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2012-07-21 20:19:19 +00:00
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int64_t pts;
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2012-05-10 05:36:10 +00:00
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2012-06-05 09:24:07 +00:00
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FF_TPRINTF_START(NULL, start_frame); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " "); ff_tlog_ref(NULL, picref, 1);
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2012-05-10 05:36:10 +00:00
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2012-10-16 21:58:26 +00:00
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if (strcmp(link->dst->filter->name, "scale")) {
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av_assert1(picref->format == link->format);
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av_assert1(picref->video->w == link->w);
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av_assert1(picref->video->h == link->h);
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}
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2012-09-12 19:00:34 +00:00
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2012-08-19 17:26:58 +00:00
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if (link->closed) {
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avfilter_unref_buffer(picref);
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return AVERROR_EOF;
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}
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|
2012-05-10 05:36:10 +00:00
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if (!(start_frame = dst->start_frame))
|
2012-05-19 08:37:56 +00:00
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start_frame = default_start_frame;
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2012-05-10 05:36:10 +00:00
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2012-08-12 08:59:37 +00:00
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av_assert1((picref->perms & src->min_perms) == src->min_perms);
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picref->perms &= ~ src->rej_perms;
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perms = picref->perms;
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|
2012-05-10 05:36:10 +00:00
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if (picref->linesize[0] < 0)
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perms |= AV_PERM_NEG_LINESIZES;
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/* prepare to copy the picture if it has insufficient permissions */
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if ((dst->min_perms & perms) != dst->min_perms || dst->rej_perms & perms) {
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av_log(link->dst, AV_LOG_DEBUG,
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"frame copy needed (have perms %x, need %x, reject %x)\n",
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picref->perms,
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link->dstpad->min_perms, link->dstpad->rej_perms);
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|
2012-05-30 08:31:48 +00:00
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link->cur_buf = ff_get_video_buffer(link, dst->min_perms, link->w, link->h);
|
2012-07-08 15:29:42 +00:00
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if (!link->cur_buf) {
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avfilter_unref_bufferp(&picref);
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return AVERROR(ENOMEM);
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}
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|
|
2012-05-10 05:36:10 +00:00
|
|
|
link->src_buf = picref;
|
|
|
|
avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf);
|
2012-04-07 07:49:39 +00:00
|
|
|
|
|
|
|
/* copy palette if required */
|
2012-10-20 04:43:48 +00:00
|
|
|
if (av_pix_fmt_desc_get(link->format)->flags & PIX_FMT_PAL)
|
2012-04-07 07:49:39 +00:00
|
|
|
memcpy(link->cur_buf->data[1], link->src_buf-> data[1], AVPALETTE_SIZE);
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
link->cur_buf = picref;
|
|
|
|
|
2012-07-29 16:43:45 +00:00
|
|
|
link->cur_buf_copy = link->cur_buf;
|
|
|
|
|
2012-05-16 00:27:31 +00:00
|
|
|
while(cmd && cmd->time <= picref->pts * av_q2d(link->time_base)){
|
|
|
|
av_log(link->dst, AV_LOG_DEBUG,
|
|
|
|
"Processing command time:%f command:%s arg:%s\n",
|
|
|
|
cmd->time, cmd->command, cmd->arg);
|
|
|
|
avfilter_process_command(link->dst, cmd->command, cmd->arg, 0, 0, cmd->flags);
|
|
|
|
ff_command_queue_pop(link->dst);
|
|
|
|
cmd= link->dst->command_queue;
|
|
|
|
}
|
2012-07-21 20:19:19 +00:00
|
|
|
pts = link->cur_buf->pts;
|
2012-07-08 15:29:42 +00:00
|
|
|
ret = start_frame(link, link->cur_buf);
|
2012-07-30 14:47:41 +00:00
|
|
|
ff_update_link_current_pts(link, pts);
|
2012-07-08 15:29:42 +00:00
|
|
|
if (ret < 0)
|
|
|
|
clear_link(link);
|
2012-07-29 16:43:45 +00:00
|
|
|
else
|
|
|
|
/* incoming buffers must not be freed in start frame,
|
|
|
|
because they can still be in use by the automatic copy mechanism */
|
|
|
|
av_assert1(link->cur_buf_copy->buf->refcount > 0);
|
2012-07-08 15:29:42 +00:00
|
|
|
|
|
|
|
return ret;
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
|
|
|
|
2012-07-14 07:25:33 +00:00
|
|
|
int ff_null_end_frame(AVFilterLink *link)
|
2012-05-10 05:36:10 +00:00
|
|
|
{
|
2012-07-14 07:25:33 +00:00
|
|
|
return ff_end_frame(link->dst->outputs[0]);
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
|
|
|
|
2012-07-14 07:25:33 +00:00
|
|
|
static int default_end_frame(AVFilterLink *inlink)
|
2012-05-10 05:36:10 +00:00
|
|
|
{
|
|
|
|
AVFilterLink *outlink = NULL;
|
|
|
|
|
2012-06-12 19:25:10 +00:00
|
|
|
if (inlink->dst->nb_outputs)
|
2012-05-10 05:36:10 +00:00
|
|
|
outlink = inlink->dst->outputs[0];
|
|
|
|
|
|
|
|
if (outlink) {
|
2012-11-28 15:39:04 +00:00
|
|
|
if (inlink->dstpad->filter_frame) {
|
|
|
|
int ret = inlink->dstpad->filter_frame(inlink, inlink->cur_buf);
|
|
|
|
inlink->cur_buf = NULL;
|
|
|
|
return ret;
|
|
|
|
} else {
|
|
|
|
return ff_end_frame(outlink);
|
|
|
|
}
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
2012-07-14 07:25:33 +00:00
|
|
|
return 0;
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
|
|
|
|
2012-07-14 07:25:33 +00:00
|
|
|
int ff_end_frame(AVFilterLink *link)
|
2012-05-10 05:36:10 +00:00
|
|
|
{
|
2012-07-14 07:25:33 +00:00
|
|
|
int (*end_frame)(AVFilterLink *);
|
|
|
|
int ret;
|
2012-05-10 05:36:10 +00:00
|
|
|
|
|
|
|
if (!(end_frame = link->dstpad->end_frame))
|
2012-05-19 08:37:56 +00:00
|
|
|
end_frame = default_end_frame;
|
2012-05-10 05:36:10 +00:00
|
|
|
|
2012-07-14 07:25:33 +00:00
|
|
|
ret = end_frame(link);
|
2012-05-10 05:36:10 +00:00
|
|
|
|
2012-07-08 15:29:42 +00:00
|
|
|
clear_link(link);
|
2012-07-14 07:25:33 +00:00
|
|
|
|
|
|
|
return ret;
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
|
|
|
|
2012-07-14 07:25:33 +00:00
|
|
|
int ff_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
|
2012-05-10 05:36:10 +00:00
|
|
|
{
|
2012-07-14 07:25:33 +00:00
|
|
|
return ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
|
|
|
|
2012-07-14 07:25:33 +00:00
|
|
|
static int default_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
|
2012-05-10 05:36:10 +00:00
|
|
|
{
|
|
|
|
AVFilterLink *outlink = NULL;
|
|
|
|
|
2012-06-12 19:25:10 +00:00
|
|
|
if (inlink->dst->nb_outputs)
|
2012-05-10 05:36:10 +00:00
|
|
|
outlink = inlink->dst->outputs[0];
|
|
|
|
|
2012-11-28 15:39:04 +00:00
|
|
|
if (outlink && !inlink->dstpad->filter_frame)
|
2012-07-14 07:25:33 +00:00
|
|
|
return ff_draw_slice(outlink, y, h, slice_dir);
|
|
|
|
return 0;
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
|
|
|
|
2012-07-14 07:25:33 +00:00
|
|
|
int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
|
2012-05-10 05:36:10 +00:00
|
|
|
{
|
|
|
|
uint8_t *src[4], *dst[4];
|
2012-07-14 07:25:33 +00:00
|
|
|
int i, j, vsub, ret;
|
|
|
|
int (*draw_slice)(AVFilterLink *, int, int, int);
|
2012-05-10 05:36:10 +00:00
|
|
|
|
2012-06-05 09:24:07 +00:00
|
|
|
FF_TPRINTF_START(NULL, draw_slice); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " y:%d h:%d dir:%d\n", y, h, slice_dir);
|
2012-05-10 05:36:10 +00:00
|
|
|
|
|
|
|
/* copy the slice if needed for permission reasons */
|
|
|
|
if (link->src_buf) {
|
2012-10-06 11:29:37 +00:00
|
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
|
|
|
|
vsub = desc->log2_chroma_h;
|
2012-05-10 05:36:10 +00:00
|
|
|
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
|
|
if (link->src_buf->data[i]) {
|
|
|
|
src[i] = link->src_buf-> data[i] +
|
|
|
|
(y >> (i==1 || i==2 ? vsub : 0)) * link->src_buf-> linesize[i];
|
2012-07-29 16:43:45 +00:00
|
|
|
dst[i] = link->cur_buf_copy->data[i] +
|
|
|
|
(y >> (i==1 || i==2 ? vsub : 0)) * link->cur_buf_copy->linesize[i];
|
2012-05-10 05:36:10 +00:00
|
|
|
} else
|
|
|
|
src[i] = dst[i] = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
|
|
int planew =
|
2012-07-29 16:43:45 +00:00
|
|
|
av_image_get_linesize(link->format, link->cur_buf_copy->video->w, i);
|
2012-05-10 05:36:10 +00:00
|
|
|
|
|
|
|
if (!src[i]) continue;
|
|
|
|
|
|
|
|
for (j = 0; j < h >> (i==1 || i==2 ? vsub : 0); j++) {
|
|
|
|
memcpy(dst[i], src[i], planew);
|
|
|
|
src[i] += link->src_buf->linesize[i];
|
2012-07-29 16:43:45 +00:00
|
|
|
dst[i] += link->cur_buf_copy->linesize[i];
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!(draw_slice = link->dstpad->draw_slice))
|
2012-05-19 08:37:56 +00:00
|
|
|
draw_slice = default_draw_slice;
|
2012-07-14 07:25:33 +00:00
|
|
|
ret = draw_slice(link, y, h, slice_dir);
|
|
|
|
if (ret < 0)
|
|
|
|
clear_link(link);
|
2012-07-29 16:43:45 +00:00
|
|
|
else
|
|
|
|
/* incoming buffers must not be freed in start frame,
|
|
|
|
because they can still be in use by the automatic copy mechanism */
|
|
|
|
av_assert1(link->cur_buf_copy->buf->refcount > 0);
|
2012-07-14 07:25:33 +00:00
|
|
|
return ret;
|
2012-05-10 05:36:10 +00:00
|
|
|
}
|