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lavfi/stereo3d: add support for alternating frames input & output format

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-04-26 13:17:03 +00:00
parent 01a5a3a2e8
commit 2bdd434931
2 changed files with 107 additions and 24 deletions
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6
doc/filters.texi
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@ -5785,6 +5785,12 @@ above-below with half height resolution
above-below with half height resolution
(right eye above, left eye below)
@item al
alternating frames (left eye first, right eye second)
@item ar
alternating frames (right eye first, left eye second)
Default value is @samp{sbsl}.
@end table

125
libavfilter/vf_stereo3d.c
View File

@ -56,6 +56,8 @@ enum StereoCode {
ABOVE_BELOW_RL, // above-below (right eye above, left eye below)
ABOVE_BELOW_2_LR, // above-below with half height resolution
ABOVE_BELOW_2_RL, // above-below with half height resolution
ALTERNATING_LR, // alternating frames (left eye first, right eye second)
ALTERNATING_RL, // alternating frames (right eye first, left eye second)
STEREO_CODE_COUNT // TODO: needs autodetection
};
@ -135,17 +137,21 @@ typedef struct Stereo3DContext {
int nb_planes;
int linesize[4];
int pixstep[4];
AVFrame *prev;
double ts_unit;
} Stereo3DContext;
#define OFFSET(x) offsetof(Stereo3DContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption stereo3d_options[] = {
{ "in", "set input format", OFFSET(in.format), AV_OPT_TYPE_INT, {.i64=SIDE_BY_SIDE_LR}, SIDE_BY_SIDE_LR, ABOVE_BELOW_2_RL, FLAGS, "in"},
{ "in", "set input format", OFFSET(in.format), AV_OPT_TYPE_INT, {.i64=SIDE_BY_SIDE_LR}, SIDE_BY_SIDE_LR, STEREO_CODE_COUNT-1, FLAGS, "in"},
{ "ab2l", "above below half height left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR}, 0, 0, FLAGS, "in" },
{ "ab2r", "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL}, 0, 0, FLAGS, "in" },
{ "abl", "above below left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR}, 0, 0, FLAGS, "in" },
{ "abr", "above below right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL}, 0, 0, FLAGS, "in" },
{ "al", "alternating frames left first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_LR}, 0, 0, FLAGS, "in" },
{ "ar", "alternating frames right first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_RL}, 0, 0, FLAGS, "in" },
{ "sbs2l", "side by side half width left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR}, 0, 0, FLAGS, "in" },
{ "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL}, 0, 0, FLAGS, "in" },
{ "sbsl", "side by side left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR}, 0, 0, FLAGS, "in" },
@ -159,6 +165,8 @@ static const AVOption stereo3d_options[] = {
{ "agmd", "anaglyph green magenta dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_DUBOIS}, 0, 0, FLAGS, "out" },
{ "agmg", "anaglyph green magenta gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_GRAY}, 0, 0, FLAGS, "out" },
{ "agmh", "anaglyph green magenta half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_HALF}, 0, 0, FLAGS, "out" },
{ "al", "alternating frames left first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_LR}, 0, 0, FLAGS, "out" },
{ "ar", "alternating frames right first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_RL}, 0, 0, FLAGS, "out" },
{ "arbg", "anaglyph red blue gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RB_GRAY}, 0, 0, FLAGS, "out" },
{ "arcc", "anaglyph red cyan color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_COLOR}, 0, 0, FLAGS, "out" },
{ "arcd", "anaglyph red cyan dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_DUBOIS}, 0, 0, FLAGS, "out" },
@ -249,6 +257,8 @@ static int config_output(AVFilterLink *outlink)
AVFilterLink *inlink = ctx->inputs[0];
Stereo3DContext *s = ctx->priv;
AVRational aspect = inlink->sample_aspect_ratio;
AVRational fps = inlink->frame_rate;
AVRational tb = inlink->time_base;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
int ret;
@ -317,6 +327,12 @@ static int config_output(AVFilterLink *outlink)
s->in.row_left =
s->height = inlink->h / 2;
break;
case ALTERNATING_RL:
case ALTERNATING_LR:
outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;
fps.den *= 2;
tb.num *= 2;
break;
default:
av_log(ctx, AV_LOG_ERROR, "input format %d is not supported\n", s->in.format);
return AVERROR(EINVAL);
@ -389,19 +405,27 @@ static int config_output(AVFilterLink *outlink)
s->in.row_left = s->in.row_right;
case MONO_L:
break;
case ALTERNATING_RL:
case ALTERNATING_LR:
fps.num *= 2;
tb.den *= 2;
break;
default:
av_log(ctx, AV_LOG_ERROR, "output format is not supported\n");
av_log(ctx, AV_LOG_ERROR, "output format %d is not supported\n", s->out.format);
return AVERROR(EINVAL);
}
outlink->w = s->out.width;
outlink->h = s->out.height;
outlink->frame_rate = fps;
outlink->time_base = tb;
outlink->sample_aspect_ratio = aspect;
if ((ret = av_image_fill_linesizes(s->linesize, outlink->format, s->width)) < 0)
return ret;
s->nb_planes = av_pix_fmt_count_planes(outlink->format);
av_image_fill_max_pixsteps(s->pixstep, NULL, desc);
s->ts_unit = av_q2d(av_inv_q(av_mul_q(outlink->frame_rate, outlink->time_base)));
return 0;
}
@ -422,26 +446,57 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
AVFilterContext *ctx = inlink->dst;
Stereo3DContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out;
AVFrame *out, *oleft, *oright, *ileft, *iright;
int out_off_left[4], out_off_right[4];
int in_off_left[4], in_off_right[4];
int i;
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
switch (s->in.format) {
case ALTERNATING_LR:
case ALTERNATING_RL:
if (!s->prev) {
s->prev = inpicref;
return 0;
}
ileft = s->prev;
iright = inpicref;
if (s->in.format == ALTERNATING_RL)
FFSWAP(AVFrame *, ileft, iright);
break;
default:
ileft = iright = inpicref;
};
out = oleft = oright = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
av_frame_free(&s->prev);
av_frame_free(&inpicref);
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, inpicref);
if (s->out.format == ALTERNATING_LR ||
s->out.format == ALTERNATING_RL) {
oright = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!oright) {
av_frame_free(&oleft);
av_frame_free(&s->prev);
av_frame_free(&inpicref);
return AVERROR(ENOMEM);
}
av_frame_copy_props(oright, inpicref);
}
for (i = 0; i < 4; i++) {
in_off_left[i] = (s->in.row_left + s->in.off_lstep) * inpicref->linesize[i] + s->in.off_left * s->pixstep[i];
in_off_right[i] = (s->in.row_right + s->in.off_rstep) * inpicref->linesize[i] + s->in.off_right * s->pixstep[i];
out_off_left[i] = (s->out.row_left + s->out.off_lstep) * out->linesize[i] + s->out.off_left * s->pixstep[i];
out_off_right[i] = (s->out.row_right + s->out.off_rstep) * out->linesize[i] + s->out.off_right * s->pixstep[i];
in_off_left[i] = (s->in.row_left + s->in.off_lstep) * ileft->linesize[i] + s->in.off_left * s->pixstep[i];
in_off_right[i] = (s->in.row_right + s->in.off_rstep) * iright->linesize[i] + s->in.off_right * s->pixstep[i];
out_off_left[i] = (s->out.row_left + s->out.off_lstep) * oleft->linesize[i] + s->out.off_left * s->pixstep[i];
out_off_right[i] = (s->out.row_right + s->out.off_rstep) * oright->linesize[i] + s->out.off_right * s->pixstep[i];
}
switch (s->out.format) {
case ALTERNATING_LR:
case ALTERNATING_RL:
case SIDE_BY_SIDE_LR:
case SIDE_BY_SIDE_RL:
case SIDE_BY_SIDE_2_LR:
@ -453,24 +508,25 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
case INTERLEAVE_ROWS_LR:
case INTERLEAVE_ROWS_RL:
for (i = 0; i < s->nb_planes; i++) {
av_image_copy_plane(out->data[i] + out_off_left[i],
out->linesize[i] * s->row_step,
inpicref->data[i] + in_off_left[i],
inpicref->linesize[i] * s->row_step,
av_image_copy_plane(oleft->data[i] + out_off_left[i],
oleft->linesize[i] * s->row_step,
ileft->data[i] + in_off_left[i],
ileft->linesize[i] * s->row_step,
s->linesize[i], s->height);
av_image_copy_plane(out->data[i] + out_off_right[i],
out->linesize[i] * s->row_step,
inpicref->data[i] + in_off_right[i],
inpicref->linesize[i] * s->row_step,
av_image_copy_plane(oright->data[i] + out_off_right[i],
oright->linesize[i] * s->row_step,
iright->data[i] + in_off_right[i],
iright->linesize[i] * s->row_step,
s->linesize[i], s->height);
}
break;
case MONO_L:
iright = ileft;
case MONO_R:
for (i = 0; i < s->nb_planes; i++) {
av_image_copy_plane(out->data[i], out->linesize[i],
inpicref->data[i] + in_off_left[i],
inpicref->linesize[i],
iright->data[i] + in_off_left[i],
iright->linesize[i],
s->linesize[i], s->height);
}
break;
@ -489,7 +545,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
case ANAGLYPH_YB_COLOR:
case ANAGLYPH_YB_DUBOIS: {
int i, x, y, il, ir, o;
uint8_t *src = inpicref->data[0];
uint8_t *lsrc = ileft->data[0];
uint8_t *rsrc = iright->data[0];
uint8_t *dst = out->data[0];
int out_width = s->out.width;
int *ana_matrix[3];
@ -499,12 +556,12 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
for (y = 0; y < s->out.height; y++) {
o = out->linesize[0] * y;
il = in_off_left[0] + y * inpicref->linesize[0];
ir = in_off_right[0] + y * inpicref->linesize[0];
il = in_off_left[0] + y * ileft->linesize[0];
ir = in_off_right[0] + y * iright->linesize[0];
for (x = 0; x < out_width; x++, il += 3, ir += 3, o+= 3) {
dst[o ] = ana_convert(ana_matrix[0], src + il, src + ir);
dst[o + 1] = ana_convert(ana_matrix[1], src + il, src + ir);
dst[o + 2] = ana_convert(ana_matrix[2], src + il, src + ir);
dst[o ] = ana_convert(ana_matrix[0], lsrc + il, rsrc + ir);
dst[o + 1] = ana_convert(ana_matrix[1], lsrc + il, rsrc + ir);
dst[o + 2] = ana_convert(ana_matrix[2], lsrc + il, rsrc + ir);
}
}
break;
@ -514,9 +571,28 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
}
av_frame_free(&inpicref);
av_frame_free(&s->prev);
if (oright != oleft) {
if (s->out.format == ALTERNATING_LR)
FFSWAP(AVFrame *, oleft, oright);
oright->pts = outlink->frame_count * s->ts_unit;
ff_filter_frame(outlink, oright);
out = oleft;
oleft->pts = outlink->frame_count * s->ts_unit;
} else if (s->in.format == ALTERNATING_LR ||
s->in.format == ALTERNATING_RL) {
out->pts = outlink->frame_count * s->ts_unit;
}
return ff_filter_frame(outlink, out);
}
static av_cold void uninit(AVFilterContext *ctx)
{
Stereo3DContext *s = ctx->priv;
av_frame_free(&s->prev);
}
static const AVFilterPad stereo3d_inputs[] = {
{
.name = "default",
@ -539,6 +615,7 @@ AVFilter avfilter_vf_stereo3d = {
.name = "stereo3d",
.description = NULL_IF_CONFIG_SMALL("Convert video stereoscopic 3D view."),
.priv_size = sizeof(Stereo3DContext),
.uninit = uninit,
.query_formats = query_formats,
.inputs = stereo3d_inputs,
.outputs = stereo3d_outputs,