mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-15 19:55:08 +00:00
565e4993c6
Any alleged performance benefits gained from the split are purely mythological and do not justify added code complexity.
166 lines
5.5 KiB
C
166 lines
5.5 KiB
C
/*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/mem.h"
|
|
|
|
#include "avfilter.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
#ifdef DEBUG
|
|
static char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms)
|
|
{
|
|
snprintf(buf, buf_size, "%s%s%s%s%s%s",
|
|
perms & AV_PERM_READ ? "r" : "",
|
|
perms & AV_PERM_WRITE ? "w" : "",
|
|
perms & AV_PERM_PRESERVE ? "p" : "",
|
|
perms & AV_PERM_REUSE ? "u" : "",
|
|
perms & AV_PERM_REUSE2 ? "U" : "",
|
|
perms & AV_PERM_NEG_LINESIZES ? "n" : "");
|
|
return buf;
|
|
}
|
|
#endif
|
|
|
|
static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end)
|
|
{
|
|
av_unused char buf[16];
|
|
av_dlog(ctx,
|
|
"ref[%p buf:%p refcount:%d perms:%s data:%p linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64,
|
|
ref, ref->buf, ref->buf->refcount, ff_get_ref_perms_string(buf, sizeof(buf), ref->perms), ref->data[0],
|
|
ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3],
|
|
ref->pts, ref->pos);
|
|
|
|
if (ref->video) {
|
|
av_dlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c",
|
|
ref->video->pixel_aspect.num, ref->video->pixel_aspect.den,
|
|
ref->video->w, ref->video->h,
|
|
!ref->video->interlaced ? 'P' : /* Progressive */
|
|
ref->video->top_field_first ? 'T' : 'B', /* Top / Bottom */
|
|
ref->video->key_frame,
|
|
av_get_picture_type_char(ref->video->pict_type));
|
|
}
|
|
if (ref->audio) {
|
|
av_dlog(ctx, " cl:%"PRId64"d n:%d r:%d p:%d",
|
|
ref->audio->channel_layout,
|
|
ref->audio->nb_samples,
|
|
ref->audio->sample_rate,
|
|
ref->audio->planar);
|
|
}
|
|
|
|
av_dlog(ctx, "]%s", end ? "\n" : "");
|
|
}
|
|
|
|
AVFilterBufferRef *ff_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
|
|
{
|
|
return ff_get_video_buffer(link->dst->outputs[0], perms, w, h);
|
|
}
|
|
|
|
/* TODO: set the buffer's priv member to a context structure for the whole
|
|
* filter chain. This will allow for a buffer pool instead of the constant
|
|
* alloc & free cycle currently implemented. */
|
|
AVFilterBufferRef *ff_default_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
|
|
{
|
|
int linesize[4];
|
|
uint8_t *data[4];
|
|
AVFilterBufferRef *picref = NULL;
|
|
|
|
// +2 is needed for swscaler, +16 to be SIMD-friendly
|
|
if (av_image_alloc(data, linesize, w, h, link->format, 16) < 0)
|
|
return NULL;
|
|
|
|
picref = avfilter_get_video_buffer_ref_from_arrays(data, linesize,
|
|
perms, w, h, link->format);
|
|
if (!picref) {
|
|
av_free(data[0]);
|
|
return NULL;
|
|
}
|
|
|
|
return picref;
|
|
}
|
|
|
|
AVFilterBufferRef *
|
|
avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms,
|
|
int w, int h, enum AVPixelFormat format)
|
|
{
|
|
AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer));
|
|
AVFilterBufferRef *picref = av_mallocz(sizeof(AVFilterBufferRef));
|
|
|
|
if (!pic || !picref)
|
|
goto fail;
|
|
|
|
picref->buf = pic;
|
|
picref->buf->free = ff_avfilter_default_free_buffer;
|
|
if (!(picref->video = av_mallocz(sizeof(AVFilterBufferRefVideoProps))))
|
|
goto fail;
|
|
|
|
pic->w = picref->video->w = w;
|
|
pic->h = picref->video->h = h;
|
|
|
|
/* make sure the buffer gets read permission or it's useless for output */
|
|
picref->perms = perms | AV_PERM_READ;
|
|
|
|
pic->refcount = 1;
|
|
picref->type = AVMEDIA_TYPE_VIDEO;
|
|
pic->format = picref->format = format;
|
|
|
|
memcpy(pic->data, data, 4*sizeof(data[0]));
|
|
memcpy(pic->linesize, linesize, 4*sizeof(linesize[0]));
|
|
memcpy(picref->data, pic->data, sizeof(picref->data));
|
|
memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize));
|
|
|
|
pic-> extended_data = pic->data;
|
|
picref->extended_data = picref->data;
|
|
|
|
picref->pts = AV_NOPTS_VALUE;
|
|
|
|
return picref;
|
|
|
|
fail:
|
|
if (picref && picref->video)
|
|
av_free(picref->video);
|
|
av_free(picref);
|
|
av_free(pic);
|
|
return NULL;
|
|
}
|
|
|
|
AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
|
|
{
|
|
AVFilterBufferRef *ret = NULL;
|
|
|
|
av_unused char buf[16];
|
|
FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0);
|
|
av_dlog(NULL, " perms:%s w:%d h:%d\n", ff_get_ref_perms_string(buf, sizeof(buf), perms), w, h);
|
|
|
|
if (link->dstpad->get_video_buffer)
|
|
ret = link->dstpad->get_video_buffer(link, perms, w, h);
|
|
|
|
if (!ret)
|
|
ret = ff_default_get_video_buffer(link, perms, w, h);
|
|
|
|
if (ret)
|
|
ret->type = AVMEDIA_TYPE_VIDEO;
|
|
|
|
FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " returning "); ff_dlog_ref(NULL, ret, 1);
|
|
|
|
return ret;
|
|
}
|