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authorPaul B Mahol <onemda@gmail.com>2015-08-16 13:01:53 +0200
committerPaul B Mahol <onemda@gmail.com>2015-08-22 19:48:42 +0000
commit14f97bb2bc32b2acf8b0367080532e67f88ad05e (patch)
tree4669caf6dbe9e44fcb3f037a6a0b722e3f68fac1 /libavfilter/vf_waveform.c
parente95193f5eaf1775613d68ca47ebcf66516a6b4ca (diff)
downloadffmpeg-14f97bb2bc32b2acf8b0367080532e67f88ad05e.tar.gz
avfilter: add waveform monitor filter
Diffstat (limited to 'libavfilter/vf_waveform.c')
-rw-r--r--libavfilter/vf_waveform.c437
1 files changed, 437 insertions, 0 deletions
diff --git a/libavfilter/vf_waveform.c b/libavfilter/vf_waveform.c
new file mode 100644
index 0000000000..7dfd89019d
--- /dev/null
+++ b/libavfilter/vf_waveform.c
@@ -0,0 +1,437 @@
+/*
+ * Copyright (c) 2012-2015 Paul B Mahol
+ * Copyright (c) 2013 Marton Balint
+ *
+ * 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
+ */
+
+#include "libavutil/avassert.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/pixdesc.h"
+#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+typedef struct WaveformContext {
+ const AVClass *class;
+ int mode;
+ int ncomp;
+ int pcomp;
+ const uint8_t *bg_color;
+ int intensity;
+ int mirror;
+ int display;
+ int envelope;
+ int estart[4];
+ int eend[4];
+ int *emax[4];
+ int *emin[4];
+ const AVPixFmtDescriptor *desc;
+} WaveformContext;
+
+#define OFFSET(x) offsetof(WaveformContext, x)
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+
+static const AVOption waveform_options[] = {
+ { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "mode" },
+ { "m", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "mode" },
+ { "row", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mode" },
+ { "column", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mode" },
+ { "intensity", "set intensity", OFFSET(intensity), AV_OPT_TYPE_INT, {.i64=10}, 1, 255, FLAGS },
+ { "i", "set intensity", OFFSET(intensity), AV_OPT_TYPE_INT, {.i64=10}, 1, 255, FLAGS },
+ { "mirror", "set mirroring", OFFSET(mirror), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS },
+ { "r", "set mirroring", OFFSET(mirror), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS },
+ { "display", "set display mode", OFFSET(display), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "display" },
+ { "d", "set display mode", OFFSET(display), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "display" },
+ { "overlay", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "display" },
+ { "parade", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "display" },
+ { "components", "set components to display", OFFSET(pcomp), AV_OPT_TYPE_INT, {.i64=1}, 1, 15, FLAGS },
+ { "c", "set components to display", OFFSET(pcomp), AV_OPT_TYPE_INT, {.i64=1}, 1, 15, FLAGS },
+ { "envelope", "set envelope to display", OFFSET(envelope), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "envelope" },
+ { "e", "set envelope to display", OFFSET(envelope), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "envelope" },
+ { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "envelope" },
+ { "instant", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "envelope" },
+ { "peak", NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "envelope" },
+ { "peak+instant", NULL, 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, FLAGS, "envelope" },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(waveform);
+
+static const enum AVPixelFormat pix_fmts[] = {
+ AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
+ AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
+ AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
+ AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P,
+ AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
+ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
+ AV_PIX_FMT_GRAY8,
+ AV_PIX_FMT_NONE
+};
+
+static int query_formats(AVFilterContext *ctx)
+{
+ AVFilterFormats *fmts_list;
+
+ fmts_list = ff_make_format_list(pix_fmts);
+ if (!fmts_list)
+ return AVERROR(ENOMEM);
+ return ff_set_common_formats(ctx, fmts_list);
+}
+
+static const uint8_t black_yuva_color[4] = { 0, 127, 127, 255 };
+static const uint8_t black_gbrp_color[4] = { 0, 0, 0, 255 };
+
+static int config_input(AVFilterLink *inlink)
+{
+ AVFilterContext *ctx = inlink->dst;
+ WaveformContext *s = ctx->priv;
+
+ s->desc = av_pix_fmt_desc_get(inlink->format);
+ s->ncomp = s->desc->nb_components;
+
+ switch (inlink->format) {
+ case AV_PIX_FMT_GBRAP:
+ case AV_PIX_FMT_GBRP:
+ s->bg_color = black_gbrp_color;
+ break;
+ default:
+ s->bg_color = black_yuva_color;
+ }
+
+ return 0;
+}
+
+static int config_output(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ AVFilterLink *inlink = ctx->inputs[0];
+ WaveformContext *s = ctx->priv;
+ int comp = 0, i, j = 0, p, size, shift;
+
+ for (i = 0; i < s->ncomp; i++) {
+ if ((1 << i) & s->pcomp)
+ comp++;
+ }
+
+ for (p = 0; p < 4; p++) {
+ av_freep(&s->emax[p]);
+ av_freep(&s->emin[p]);
+ }
+
+ if (s->mode) {
+ outlink->h = 256 * FFMAX(comp * s->display, 1);
+ size = inlink->w * sizeof(int);
+ } else {
+ outlink->w = 256 * FFMAX(comp * s->display, 1);
+ size = inlink->h * sizeof(int);
+ }
+
+ for (p = 0; p < 4; p++) {
+ const int is_chroma = (p == 1 || p == 2);
+ const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
+ const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);
+ const int plane = s->desc->comp[p].plane;
+ int offset;
+
+ if (!((1 << p) & s->pcomp))
+ continue;
+
+ shift = s->mode ? shift_h : shift_w;
+
+ s->emax[plane] = av_malloc(size);
+ s->emin[plane] = av_malloc(size);
+
+ if (!s->emin[plane] || !s->emax[plane])
+ return AVERROR(ENOMEM);
+
+ offset = j++ * 256 * s->display;
+ s->estart[plane] = offset >> shift;
+ s->eend[plane] = (offset + 255) >> shift;
+ for (i = 0; i < size / sizeof(int); i++) {
+ s->emax[plane][i] = s->estart[plane];
+ s->emin[plane][i] = s->eend[plane];
+ }
+ }
+
+ outlink->sample_aspect_ratio = (AVRational){1,1};
+
+ return 0;
+}
+
+static void gen_waveform(WaveformContext *s, AVFrame *in, AVFrame *out,
+ int component, int intensity, int offset, int col_mode)
+{
+ const int plane = s->desc->comp[component].plane;
+ const int mirror = s->mirror;
+ const int is_chroma = (component == 1 || component == 2);
+ const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
+ const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);
+ const int src_linesize = in->linesize[plane];
+ const int dst_linesize = out->linesize[plane];
+ const int dst_signed_linesize = dst_linesize * (mirror == 1 ? -1 : 1);
+ const int max = 255 - intensity;
+ const int src_h = FF_CEIL_RSHIFT(in->height, shift_h);
+ const int src_w = FF_CEIL_RSHIFT(in->width, shift_w);
+ const uint8_t *src_data = in->data[plane];
+ uint8_t *dst_data = out->data[plane] + (col_mode ? (offset >> shift_h) * dst_linesize : offset >> shift_w);
+ uint8_t * const dst_bottom_line = dst_data + dst_linesize * ((256 >> shift_h) - 1);
+ uint8_t * const dst_line = (mirror ? dst_bottom_line : dst_data);
+ const uint8_t *p;
+ uint8_t *dst;
+ int y;
+
+ if (!col_mode && mirror)
+ dst_data += 256 >> shift_w;
+ for (y = 0; y < src_h; y++) {
+ const uint8_t *src_data_end = src_data + src_w;
+ dst = dst_line;
+ for (p = src_data; p < src_data_end; p++) {
+ uint8_t *target;
+ if (col_mode) {
+ target = dst++ + dst_signed_linesize * (*p >> shift_h);
+ } else {
+ if (mirror)
+ target = dst_data - (*p >> shift_w) - 1;
+ else
+ target = dst_data + (*p >> shift_w);
+ }
+ if (*target <= max)
+ *target += intensity;
+ else
+ *target = 255;
+ }
+ src_data += src_linesize;
+ dst_data += dst_linesize;
+ }
+}
+
+static void gen_envelope_instant(WaveformContext *s, AVFrame *out, int component)
+{
+ const int plane = s->desc->comp[component].plane;
+ const int dst_linesize = out->linesize[plane];
+ const uint8_t bg = s->bg_color[plane];
+ const int is_chroma = (component == 1 || component == 2);
+ const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
+ const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);
+ const int dst_h = FF_CEIL_RSHIFT(out->height, shift_h);
+ const int dst_w = FF_CEIL_RSHIFT(out->width, shift_w);
+ const int start = s->estart[plane];
+ const int end = s->eend[plane];
+ uint8_t *dst;
+ int x, y;
+
+ if (!s->mode) {
+ for (y = 0; y < dst_h; y++) {
+ dst = out->data[plane] + y * dst_linesize;
+ for (x = start; x < end; x++) {
+ if (dst[x] != bg) {
+ dst[x] = 255;
+ break;
+ }
+ }
+ for (x = end - 1; x >= start; x--) {
+ if (dst[x] != bg) {
+ dst[x] = 255;
+ break;
+ }
+ }
+ }
+ } else {
+ for (x = 0; x < dst_w; x++) {
+ for (y = start; y < end; y++) {
+ dst = out->data[plane] + y * dst_linesize + x;
+ if (dst[0] != bg) {
+ dst[0] = 255;
+ break;
+ }
+ }
+ for (y = end - 1; y >= start; y--) {
+ dst = out->data[plane] + y * dst_linesize + x;
+ if (dst[0] != bg) {
+ dst[0] = 255;
+ break;
+ }
+ }
+ }
+ }
+}
+
+static void gen_envelope_peak(WaveformContext *s, AVFrame *out, int component)
+{
+ const int plane = s->desc->comp[component].plane;
+ const int dst_linesize = out->linesize[plane];
+ const uint8_t bg = s->bg_color[plane];
+ const int is_chroma = (component == 1 || component == 2);
+ const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
+ const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);
+ const int dst_h = FF_CEIL_RSHIFT(out->height, shift_h);
+ const int dst_w = FF_CEIL_RSHIFT(out->width, shift_w);
+ const int start = s->estart[plane];
+ const int end = s->eend[plane];
+ int *emax = s->emax[plane];
+ int *emin = s->emin[plane];
+ uint8_t *dst;
+ int x, y;
+
+ if (!s->mode) {
+ for (y = 0; y < dst_h; y++) {
+ dst = out->data[plane] + y * dst_linesize;
+ for (x = start; x < end && x < emin[y]; x++) {
+ if (dst[x] != bg) {
+ emin[y] = x;
+ break;
+ }
+ }
+ for (x = end - 1; x >= start && x >= emax[y]; x--) {
+ if (dst[x] != bg) {
+ emax[y] = x;
+ break;
+ }
+ }
+ }
+
+ if (s->envelope == 3)
+ gen_envelope_instant(s, out, component);
+
+ for (y = 0; y < dst_h; y++) {
+ dst = out->data[plane] + y * dst_linesize + emin[y];
+ dst[0] = 255;
+ dst = out->data[plane] + y * dst_linesize + emax[y];
+ dst[0] = 255;
+ }
+ } else {
+ for (x = 0; x < dst_w; x++) {
+ for (y = start; y < end && y < emin[x]; y++) {
+ dst = out->data[plane] + y * dst_linesize + x;
+ if (dst[0] != bg) {
+ emin[x] = y;
+ break;
+ }
+ }
+ for (y = end - 1; y >= start && y >= emax[x]; y--) {
+ dst = out->data[plane] + y * dst_linesize + x;
+ if (dst[0] != bg) {
+ emax[x] = y;
+ break;
+ }
+ }
+ }
+
+ if (s->envelope == 3)
+ gen_envelope_instant(s, out, component);
+
+ for (x = 0; x < dst_w; x++) {
+ dst = out->data[plane] + emin[x] * dst_linesize + x;
+ dst[0] = 255;
+ dst = out->data[plane] + emax[x] * dst_linesize + x;
+ dst[0] = 255;
+ }
+ }
+}
+
+static void gen_envelope(WaveformContext *s, AVFrame *out, int component)
+{
+ if (s->envelope == 0) {
+ return;
+ } else if (s->envelope == 1) {
+ gen_envelope_instant(s, out, component);
+ } else {
+ gen_envelope_peak(s, out, component);
+ }
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *in)
+{
+ AVFilterContext *ctx = inlink->dst;
+ WaveformContext *s = ctx->priv;
+ AVFilterLink *outlink = ctx->outputs[0];
+ AVFrame *out;
+ int i, k;
+
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&in);
+ return AVERROR(ENOMEM);
+ }
+ out->pts = in->pts;
+
+ for (k = 0; k < s->ncomp; k++) {
+ const int is_chroma = (k == 1 || k == 2);
+ const int dst_h = FF_CEIL_RSHIFT(outlink->h, (is_chroma ? s->desc->log2_chroma_h : 0));
+ const int dst_w = FF_CEIL_RSHIFT(outlink->w, (is_chroma ? s->desc->log2_chroma_w : 0));
+ for (i = 0; i < dst_h ; i++)
+ memset(out->data[s->desc->comp[k].plane] +
+ i * out->linesize[s->desc->comp[k].plane],
+ s->bg_color[k], dst_w);
+ }
+
+ for (k = 0, i = 0; k < s->ncomp; k++) {
+ if ((1 << k) & s->pcomp) {
+ const int offset = i++ * 256 * s->display;
+ gen_waveform(s, in, out, k, s->intensity, offset, s->mode);
+ gen_envelope(s, out, k);
+ }
+ }
+
+ av_frame_free(&in);
+ return ff_filter_frame(outlink, out);
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ WaveformContext *s = ctx->priv;
+ int p;
+
+ for (p = 0; p < 4; p++) {
+ av_freep(&s->emax[p]);
+ av_freep(&s->emin[p]);
+ }
+}
+
+static const AVFilterPad inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ .config_props = config_input,
+ },
+ { NULL }
+};
+
+static const AVFilterPad outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_output,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_waveform = {
+ .name = "waveform",
+ .description = NULL_IF_CONFIG_SMALL("Video waveform monitor."),
+ .priv_size = sizeof(WaveformContext),
+ .priv_class = &waveform_class,
+ .query_formats = query_formats,
+ .uninit = uninit,
+ .inputs = inputs,
+ .outputs = outputs,
+};