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
};
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" },
{ "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" },
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;
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);
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;
}
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:
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;
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];
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;
}
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",
.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,