266 lines
8.9 KiB
C
266 lines
8.9 KiB
C
/*
|
|
* Copyright (c) 2010 Stefano Sabatini
|
|
* Copyright (c) 2008 Vitor Sessak
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* transposition filter
|
|
* Based on MPlayer libmpcodecs/vf_rotate.c.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/internal.h"
|
|
#include "avfilter.h"
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
typedef struct {
|
|
int hsub, vsub;
|
|
int pixsteps[4];
|
|
|
|
/* 0 Rotate by 90 degrees counterclockwise and vflip. */
|
|
/* 1 Rotate by 90 degrees clockwise. */
|
|
/* 2 Rotate by 90 degrees counterclockwise. */
|
|
/* 3 Rotate by 90 degrees clockwise and vflip. */
|
|
int dir;
|
|
int passthrough; ///< landscape passthrough mode enabled
|
|
} TransContext;
|
|
|
|
static av_cold int init(AVFilterContext *ctx, const char *args)
|
|
{
|
|
TransContext *trans = ctx->priv;
|
|
trans->dir = 0;
|
|
|
|
if (args)
|
|
sscanf(args, "%d", &trans->dir);
|
|
|
|
if (trans->dir < 0 || trans->dir > 7) {
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid value %d not between 0 and 7.\n",
|
|
trans->dir);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
enum PixelFormat pix_fmts[] = {
|
|
PIX_FMT_ARGB, PIX_FMT_RGBA,
|
|
PIX_FMT_ABGR, PIX_FMT_BGRA,
|
|
PIX_FMT_RGB24, PIX_FMT_BGR24,
|
|
PIX_FMT_RGB565BE, PIX_FMT_RGB565LE,
|
|
PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
|
|
PIX_FMT_BGR565BE, PIX_FMT_BGR565LE,
|
|
PIX_FMT_BGR555BE, PIX_FMT_BGR555LE,
|
|
PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE,
|
|
PIX_FMT_YUV420P16LE, PIX_FMT_YUV420P16BE,
|
|
PIX_FMT_YUV444P16LE, PIX_FMT_YUV444P16BE,
|
|
PIX_FMT_NV12, PIX_FMT_NV21,
|
|
PIX_FMT_RGB8, PIX_FMT_BGR8,
|
|
PIX_FMT_RGB4_BYTE, PIX_FMT_BGR4_BYTE,
|
|
PIX_FMT_YUV444P, PIX_FMT_YUVJ444P,
|
|
PIX_FMT_YUV420P, PIX_FMT_YUVJ420P,
|
|
PIX_FMT_YUV410P,
|
|
PIX_FMT_YUVA420P, PIX_FMT_GRAY8,
|
|
PIX_FMT_NONE
|
|
};
|
|
|
|
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
|
|
return 0;
|
|
}
|
|
|
|
static int config_props_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
TransContext *trans = ctx->priv;
|
|
AVFilterLink *inlink = ctx->inputs[0];
|
|
const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[outlink->format];
|
|
|
|
if (trans->dir&4) {
|
|
trans->dir &= 3;
|
|
if (inlink->w >= inlink->h) {
|
|
trans->passthrough = 1;
|
|
|
|
av_log(ctx, AV_LOG_VERBOSE,
|
|
"w:%d h:%d -> w:%d h:%d (landscape passthrough mode)\n",
|
|
inlink->w, inlink->h, outlink->w, outlink->h);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
trans->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
|
|
trans->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
|
|
|
|
av_image_fill_max_pixsteps(trans->pixsteps, NULL, pixdesc);
|
|
|
|
outlink->w = inlink->h;
|
|
outlink->h = inlink->w;
|
|
|
|
if (inlink->sample_aspect_ratio.num){
|
|
outlink->sample_aspect_ratio = av_div_q((AVRational){1,1}, inlink->sample_aspect_ratio);
|
|
} else
|
|
outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
|
|
|
|
av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
|
|
inlink->w, inlink->h, trans->dir, outlink->w, outlink->h,
|
|
trans->dir == 1 || trans->dir == 3 ? "clockwise" : "counterclockwise",
|
|
trans->dir == 0 || trans->dir == 3);
|
|
return 0;
|
|
}
|
|
|
|
static AVFilterBufferRef *get_video_buffer(AVFilterLink *inlink, int perms, int w, int h)
|
|
{
|
|
TransContext *trans = inlink->dst->priv;
|
|
|
|
return trans->passthrough ?
|
|
ff_null_get_video_buffer (inlink, perms, w, h) :
|
|
ff_default_get_video_buffer(inlink, perms, w, h);
|
|
}
|
|
|
|
static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
|
|
{
|
|
TransContext *trans = inlink->dst->priv;
|
|
AVFilterLink *outlink = inlink->dst->outputs[0];
|
|
AVFilterBufferRef *buf_out;
|
|
|
|
if (trans->passthrough)
|
|
return ff_null_start_frame(inlink, picref);
|
|
|
|
outlink->out_buf = ff_get_video_buffer(outlink, AV_PERM_WRITE,
|
|
outlink->w, outlink->h);
|
|
if (!outlink->out_buf)
|
|
return AVERROR(ENOMEM);
|
|
|
|
outlink->out_buf->pts = picref->pts;
|
|
|
|
if (picref->video->sample_aspect_ratio.num == 0) {
|
|
outlink->out_buf->video->sample_aspect_ratio = picref->video->sample_aspect_ratio;
|
|
} else {
|
|
outlink->out_buf->video->sample_aspect_ratio.num = picref->video->sample_aspect_ratio.den;
|
|
outlink->out_buf->video->sample_aspect_ratio.den = picref->video->sample_aspect_ratio.num;
|
|
}
|
|
|
|
buf_out = avfilter_ref_buffer(outlink->out_buf, ~0);
|
|
if (!buf_out)
|
|
return AVERROR(ENOMEM);
|
|
return ff_start_frame(outlink, buf_out);
|
|
}
|
|
|
|
static int end_frame(AVFilterLink *inlink)
|
|
{
|
|
TransContext *trans = inlink->dst->priv;
|
|
AVFilterBufferRef *inpic = inlink->cur_buf;
|
|
AVFilterBufferRef *outpic = inlink->dst->outputs[0]->out_buf;
|
|
AVFilterLink *outlink = inlink->dst->outputs[0];
|
|
int plane, ret;
|
|
|
|
if (trans->passthrough)
|
|
return ff_null_end_frame(inlink);
|
|
|
|
for (plane = 0; outpic->data[plane]; plane++) {
|
|
int hsub = plane == 1 || plane == 2 ? trans->hsub : 0;
|
|
int vsub = plane == 1 || plane == 2 ? trans->vsub : 0;
|
|
int pixstep = trans->pixsteps[plane];
|
|
int inh = inpic->video->h>>vsub;
|
|
int outw = outpic->video->w>>hsub;
|
|
int outh = outpic->video->h>>vsub;
|
|
uint8_t *out, *in;
|
|
int outlinesize, inlinesize;
|
|
int x, y;
|
|
|
|
out = outpic->data[plane]; outlinesize = outpic->linesize[plane];
|
|
in = inpic ->data[plane]; inlinesize = inpic ->linesize[plane];
|
|
|
|
if (trans->dir&1) {
|
|
in += inpic->linesize[plane] * (inh-1);
|
|
inlinesize *= -1;
|
|
}
|
|
|
|
if (trans->dir&2) {
|
|
out += outpic->linesize[plane] * (outh-1);
|
|
outlinesize *= -1;
|
|
}
|
|
|
|
for (y = 0; y < outh; y++) {
|
|
switch (pixstep) {
|
|
case 1:
|
|
for (x = 0; x < outw; x++)
|
|
out[x] = in[x*inlinesize + y];
|
|
break;
|
|
case 2:
|
|
for (x = 0; x < outw; x++)
|
|
*((uint16_t *)(out + 2*x)) = *((uint16_t *)(in + x*inlinesize + y*2));
|
|
break;
|
|
case 3:
|
|
for (x = 0; x < outw; x++) {
|
|
int32_t v = AV_RB24(in + x*inlinesize + y*3);
|
|
AV_WB24(out + 3*x, v);
|
|
}
|
|
break;
|
|
case 4:
|
|
for (x = 0; x < outw; x++)
|
|
*((uint32_t *)(out + 4*x)) = *((uint32_t *)(in + x*inlinesize + y*4));
|
|
break;
|
|
}
|
|
out += outlinesize;
|
|
}
|
|
}
|
|
|
|
if ((ret = ff_draw_slice(outlink, 0, outpic->video->h, 1)) < 0 ||
|
|
(ret = ff_end_frame(outlink)) < 0)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
|
|
static int draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
|
|
{
|
|
TransContext *trans = inlink->dst->priv;
|
|
|
|
return trans->passthrough ? ff_null_draw_slice(inlink, y, h, slice_dir) : 0;
|
|
}
|
|
|
|
AVFilter avfilter_vf_transpose = {
|
|
.name = "transpose",
|
|
.description = NULL_IF_CONFIG_SMALL("Transpose input video."),
|
|
|
|
.init = init,
|
|
.priv_size = sizeof(TransContext),
|
|
|
|
.query_formats = query_formats,
|
|
|
|
.inputs = (const AVFilterPad[]) {{ .name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.get_video_buffer= get_video_buffer,
|
|
.start_frame = start_frame,
|
|
.draw_slice = draw_slice,
|
|
.end_frame = end_frame,
|
|
.min_perms = AV_PERM_READ, },
|
|
{ .name = NULL}},
|
|
.outputs = (const AVFilterPad[]) {{ .name = "default",
|
|
.config_props = config_props_output,
|
|
.type = AVMEDIA_TYPE_VIDEO, },
|
|
{ .name = NULL}},
|
|
};
|