[FFmpeg-devel] [PATCH] lavfi: port mp test source
Stefano Sabatini
stefano.sabatini-lala at poste.it
Mon Aug 8 14:43:15 CEST 2011
---
doc/filters.texi | 57 ++++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vsrc_mptestsrc.c | 392 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 451 insertions(+), 0 deletions(-)
create mode 100644 libavfilter/vsrc_mptestsrc.c
diff --git a/doc/filters.texi b/doc/filters.texi
index c870f5b..4a469ae 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -2033,6 +2033,63 @@ movie=/dev/video0:f=video4linux2, scale=180:-1, setpts=PTS-STARTPTS [movie];
@end example
+ at section mptestsrc
+
+Generate various test patterns, as generated by the MPlayer test filter.
+
+The size of the generated video is fixed, and is 256x256.
+This source is useful in particular for testing encoding features.
+
+This source accepts an optional sequence of @var{key}=@var{value} pairs,
+separated by ":". The description of the accepted options follows.
+
+ at table @option
+
+ at item rate, r
+Specify the frame rate of the sourced video, as the number of frames
+generated per second. It has to be a string in the format
+ at var{frame_rate_num}/@var{frame_rate_den}, an integer number, a float
+number or a valid video frame rate abbreviation. The default value is
+"25".
+
+ at item duration, d
+Set the video duration of the sourced video. The accepted syntax is:
+ at example
+[-]HH[:MM[:SS[.m...]]]
+[-]S+[.m...]
+ at end example
+See also the function @code{av_parse_time()}.
+
+If not specified, or the expressed duration is negative, the video is
+supposed to be generated forever.
+
+ at item test, t
+
+Set the number or the name of the test to perform. Supported tests are:
+ at table @option
+ at item dc_luma
+ at item dc_chroma
+ at item freq_luma
+ at item freq_chroma
+ at item amp_luma
+ at item amp_chroma
+ at item cbp
+ at item mv
+ at item ring1
+ at item ring2
+ at item all
+ at end table
+
+Default value is "all", which will cycle through the list of all tests.
+ at end table
+
+For example the following:
+ at example
+testsrc=t=dc_luma
+ at end example
+
+will generate a "dc_luma" test pattern.
+
@section nullsrc
Null video source, never return images. It is mainly useful as a
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index c9a90aa..d792917 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -69,6 +69,7 @@ OBJS-$(CONFIG_BUFFER_FILTER) += vsrc_buffer.o
OBJS-$(CONFIG_COLOR_FILTER) += vsrc_color.o
OBJS-$(CONFIG_FREI0R_SRC_FILTER) += vf_frei0r.o
OBJS-$(CONFIG_MOVIE_FILTER) += vsrc_movie.o
+OBJS-$(CONFIG_MPTESTSRC_FILTER) += vsrc_mptestsrc.o
OBJS-$(CONFIG_NULLSRC_FILTER) += vsrc_nullsrc.o
OBJS-$(CONFIG_RGBTESTSRC_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_TESTSRC_FILTER) += vsrc_testsrc.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 2ec4906..8fd0609 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -85,6 +85,7 @@ void avfilter_register_all(void)
REGISTER_FILTER (COLOR, color, vsrc);
REGISTER_FILTER (FREI0R, frei0r_src, vsrc);
REGISTER_FILTER (MOVIE, movie, vsrc);
+ REGISTER_FILTER (MPTESTSRC, mptestsrc, vsrc);
REGISTER_FILTER (NULLSRC, nullsrc, vsrc);
REGISTER_FILTER (RGBTESTSRC, rgbtestsrc, vsrc);
REGISTER_FILTER (TESTSRC, testsrc, vsrc);
diff --git a/libavfilter/vsrc_mptestsrc.c b/libavfilter/vsrc_mptestsrc.c
new file mode 100644
index 0000000..98b17a2
--- /dev/null
+++ b/libavfilter/vsrc_mptestsrc.c
@@ -0,0 +1,392 @@
+/*
+ * Copyright (c) 2002 Michael Niedermayer <michaelni at gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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
+ * MP test source, ported from MPlayer libmpcodecs/vf_test.c
+ */
+
+#include "libavutil/avstring.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/pixdesc.h"
+#include "avfilter.h"
+
+#define WIDTH 512
+#define HEIGHT 512
+
+enum test_type {
+ TEST_DC_LUMA,
+ TEST_DC_CHROMA,
+ TEST_FREQ_LUMA,
+ TEST_FREQ_CHROMA,
+ TEST_AMP_LUMA,
+ TEST_AMP_CHROMA,
+ TEST_CBP,
+ TEST_MV,
+ TEST_RING1,
+ TEST_RING2,
+ TEST_ALL,
+ TEST_NB
+};
+
+typedef struct MPTestContext {
+ const AVClass *class;
+ unsigned int frame_nb;
+ AVRational time_base;
+ int64_t pts, max_pts;
+ int hsub, vsub;
+ char *size, *rate, *duration;
+ enum test_type test;
+} MPTestContext;
+
+#define OFFSET(x) offsetof(MPTestContext, x)
+
+static const AVOption mptestsrc_options[]= {
+ { "rate", "set video rate", OFFSET(rate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0 },
+ { "r", "set video rate", OFFSET(rate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0 },
+ { "duration", "set video duration", OFFSET(duration), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0 },
+ { "d", "set video duration", OFFSET(duration), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0 },
+
+ { "test", "set test to perform", OFFSET(test), FF_OPT_TYPE_INT, {.dbl=TEST_ALL}, 0, INT_MAX, 0, "test" },
+ { "t", "set test to perform", OFFSET(test), FF_OPT_TYPE_INT, {.dbl=TEST_ALL}, 0, INT_MAX, 0, "test" },
+ { "dc_luma", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_DC_LUMA}, INT_MIN, INT_MAX, 0, "test" },
+ { "dc_chroma", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_DC_CHROMA}, INT_MIN, INT_MAX, 0, "test" },
+ { "freq_luma", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_FREQ_LUMA}, INT_MIN, INT_MAX, 0, "test" },
+ { "freq_chroma", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_FREQ_CHROMA}, INT_MIN, INT_MAX, 0, "test" },
+ { "amp_luma", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_AMP_LUMA}, INT_MIN, INT_MAX, 0, "test" },
+ { "amp_chroma", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_AMP_CHROMA}, INT_MIN, INT_MAX, 0, "test" },
+ { "cbp", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_CBP}, INT_MIN, INT_MAX, 0, "test" },
+ { "mv", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_MV}, INT_MIN, INT_MAX, 0, "test" },
+ { "ring1", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_RING1}, INT_MIN, INT_MAX, 0, "test" },
+ { "ring2", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_RING2}, INT_MIN, INT_MAX, 0, "test" },
+ { "all", "", 0, FF_OPT_TYPE_CONST, {.dbl=TEST_ALL}, INT_MIN, INT_MAX, 0, "test" },
+
+ { NULL },
+};
+
+static const char *mptestsrc_get_name(void *ctx)
+{
+ return "mptestsrc";
+}
+
+static const AVClass mptestsrc_class = {
+ "MPTestContext",
+ mptestsrc_get_name,
+ mptestsrc_options
+};
+
+static double c[64];
+
+static void init_idct(void)
+{
+ int i, j;
+
+ for (i = 0; i < 8; i++) {
+ double s = i == 0 ? sqrt(0.125) : 0.5;
+
+ for (j = 0; j < 8; j++)
+ c[i*8+j] = s*cos((M_PI/8.0)*i*(j+0.5));
+ }
+}
+
+static void idct(uint8_t *dst, int dst_linesize, int src[64])
+{
+ int i, j, k;
+ double tmp[64];
+
+ for (i = 0; i < 8; i++) {
+ for (j = 0; j < 8; j++) {
+ double sum = 0.0;
+
+ for (k = 0; k < 8; k++)
+ sum += c[k*8+j] * src[8*i+k];
+
+ tmp[8*i+j] = sum;
+ }
+ }
+
+ for (j = 0; j < 8; j++) {
+ for (i = 0; i < 8; i++) {
+ double sum = 0.0;
+
+ for (k = 0; k < 8; k++)
+ sum += c[k*8+i]*tmp[8*k+j];
+
+ dst[dst_linesize*i + j] = av_clip((int)floor(sum+0.5), 0, 255);
+ }
+ }
+}
+
+static void draw_dc(uint8_t *dst, int dst_linesize, int color, int w, int h)
+{
+ int x, y;
+
+ for (y = 0; y < h; y++)
+ for (x = 0; x < w; x++)
+ dst[x + y*dst_linesize] = color;
+}
+
+static void draw_basis(uint8_t *dst, int dst_linesize, int amp, int freq, int dc)
+{
+ int src[64];
+
+ memset(src, 0, 64*sizeof(int));
+ src[0] = dc;
+ if (amp)
+ src[freq] = amp;
+ idct(dst, dst_linesize, src);
+}
+
+static void draw_cbp(uint8_t *dst[3], int dst_linesize[3], int cbp, int amp, int dc)
+{
+ if (cbp&1) draw_basis(dst[0] , dst_linesize[0], amp, 1, dc);
+ if (cbp&2) draw_basis(dst[0]+8 , dst_linesize[0], amp, 1, dc);
+ if (cbp&4) draw_basis(dst[0]+ 8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
+ if (cbp&8) draw_basis(dst[0]+8+8*dst_linesize[0], dst_linesize[0], amp, 1, dc);
+ if (cbp&16) draw_basis(dst[1] , dst_linesize[1], amp, 1, dc);
+ if (cbp&32) draw_basis(dst[2] , dst_linesize[2], amp, 1, dc);
+}
+
+static void dc_test(uint8_t *dst, int dst_linesize, int w, int h, int off)
+{
+ const int step = FFMAX(256/(w*h/256), 1);
+ int x, y, color = off;
+
+ for (y = 0; y < h; y += 16) {
+ for (x = 0; x < w; x += 16) {
+ draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);
+ color += step;
+ }
+ }
+}
+
+static void freq_test(uint8_t *dst, int dst_linesize, int off)
+{
+ int x, y, freq = 0;
+
+ for (y = 0; y < 8*16; y += 16) {
+ for (x = 0; x < 8*16; x += 16) {
+ draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*(96+off), freq, 128*8);
+ freq++;
+ }
+ }
+}
+
+static void amp_test(uint8_t *dst, int dst_linesize, int off)
+{
+ int x, y, amp = off;
+
+ for (y = 0; y < 16*16; y += 16) {
+ for (x = 0; x < 16*16; x += 16) {
+ draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*amp, 1, 128*8);
+ amp++;
+ }
+ }
+}
+
+static void cbp_test(uint8_t *dst[3], int dst_linesize[3], int off)
+{
+ int x, y, cbp = 0;
+
+ for (y = 0; y < 16*8; y += 16) {
+ for (x = 0; x < 16*8; x += 16) {
+ uint8_t *dst1[3];
+ dst1[0] = dst[0] + x*2 + y*2*dst_linesize[0];
+ dst1[1] = dst[1] + x + y* dst_linesize[1];
+ dst1[2] = dst[2] + x + y* dst_linesize[2];
+
+ draw_cbp(dst1, dst_linesize, cbp, (64+off)*4, 128*8);
+ cbp++;
+ }
+ }
+}
+
+static void mv_test(uint8_t *dst, int dst_linesize, int off)
+{
+ int x, y;
+
+ for (y = 0; y < 16*16; y++) {
+ if (y&16)
+ continue;
+ for (x = 0; x < 16*16; x++)
+ dst[x + y*dst_linesize] = x + off*8/(y/32+1);
+ }
+}
+
+static void ring1_test(uint8_t *dst, int dst_linesize, int off)
+{
+ int x, y, color = 0;
+
+ for (y = off; y < 16*16; y += 16) {
+ for (x = off; x < 16*16; x += 16) {
+ draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);
+ color++;
+ }
+ }
+}
+
+static void ring2_test(uint8_t *dst, int dst_linesize, int off)
+{
+ int x, y;
+
+ for (y = 0; y < 16*16; y++) {
+ for (x = 0; x < 16*16; x++) {
+ double d = sqrt((x-8*16)*(x-8*16) + (y-8*16)*(y-8*16));
+ double r = d/20 - (int)(d/20);
+ if (r < off/30.0) {
+ dst[x + y*dst_linesize] = 255;
+ dst[x + y*dst_linesize+256] = 0;
+ } else {
+ dst[x + y*dst_linesize] = x;
+ dst[x + y*dst_linesize+256] = x;
+ }
+ }
+ }
+}
+
+static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+{
+ MPTestContext *test = ctx->priv;
+ AVRational frame_rate_q;
+ int64_t duration = -1;
+ int ret;
+
+ test->class = &mptestsrc_class;
+ av_opt_set_defaults2(test, 0, 0);
+
+ if ((ret = (av_set_options_string(test, args, "=", ":"))) < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
+ return ret;
+ }
+
+ if ((ret = av_parse_video_rate(&frame_rate_q, test->rate)) < 0 ||
+ frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", test->rate);
+ return ret;
+ }
+
+ if ((test->duration) && (ret = av_parse_time(&duration, test->duration, 1)) < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid duration: '%s'\n", test->duration);
+ return ret;
+ }
+
+ test->time_base.num = frame_rate_q.den;
+ test->time_base.den = frame_rate_q.num;
+ test->max_pts = duration >= 0 ?
+ av_rescale_q(duration, AV_TIME_BASE_Q, test->time_base) : -1;
+ test->frame_nb = 0;
+ test->pts = 0;
+
+ av_log(ctx, AV_LOG_INFO, "rate:%d/%d duration:%f\n",
+ frame_rate_q.num, frame_rate_q.den,
+ duration < 0 ? -1 : test->max_pts * av_q2d(test->time_base));
+ init_idct();
+
+ return 0;
+}
+
+static int config_props(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ MPTestContext *test = ctx->priv;
+ const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[outlink->format];
+
+ test->hsub = pix_desc->log2_chroma_w;
+ test->vsub = pix_desc->log2_chroma_h;
+
+ outlink->w = WIDTH;
+ outlink->h = HEIGHT;
+ outlink->time_base = test->time_base;
+
+ return 0;
+}
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum PixelFormat pix_fmts[] = {
+ PIX_FMT_YUV420P, PIX_FMT_NONE
+ };
+
+ avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
+ return 0;
+}
+
+static int request_frame(AVFilterLink *outlink)
+{
+ MPTestContext *test = outlink->src->priv;
+ AVFilterBufferRef *picref;
+ int w = WIDTH, h = HEIGHT, ch = h>>test->vsub;
+ unsigned int frame = test->frame_nb;
+ enum test_type tt = test->test;
+
+ if (test->max_pts >= 0 && test->pts > test->max_pts)
+ return AVERROR_EOF;
+ picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, w, h);
+ picref->pts = test->pts++;
+
+ // clean image
+ memset(picref->data[0], 0, picref->linesize[0] * h);
+ memset(picref->data[1], 128, picref->linesize[1] * ch);
+ memset(picref->data[2], 128, picref->linesize[2] * ch);
+
+ if (tt == TEST_ALL && frame%30)
+ tt = (frame/30)%(TEST_NB-1);
+
+ switch (tt) {
+ case TEST_DC_LUMA: dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;
+ case TEST_DC_CHROMA: dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;
+ case TEST_FREQ_LUMA: freq_test(picref->data[0], picref->linesize[0], frame%30); break;
+ case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;
+ case TEST_AMP_LUMA: amp_test(picref->data[0], picref->linesize[0], frame%30); break;
+ case TEST_AMP_CHROMA: amp_test(picref->data[1], picref->linesize[1], frame%30); break;
+ case TEST_CBP: cbp_test(picref->data , picref->linesize , frame%30); break;
+ case TEST_MV: mv_test(picref->data[0], picref->linesize[0], frame%30); break;
+ case TEST_RING1: ring1_test(picref->data[0], picref->linesize[0], frame%30); break;
+ case TEST_RING2: ring2_test(picref->data[0], picref->linesize[0], frame%30); break;
+ }
+
+ test->frame_nb++;
+
+ avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
+ avfilter_draw_slice(outlink, 0, picref->video->h, 1);
+ avfilter_end_frame(outlink);
+ avfilter_unref_buffer(picref);
+
+ return 0;
+}
+
+AVFilter avfilter_vsrc_mptestsrc = {
+ .name = "mptestsrc",
+ .description = NULL_IF_CONFIG_SMALL("Generate various test pattern."),
+ .priv_size = sizeof(MPTestContext),
+ .init = init,
+
+ .query_formats = query_formats,
+
+ .inputs = (AVFilterPad[]) {{ .name = NULL}},
+
+ .outputs = (AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_props,
+ .request_frame = request_frame,
+ .config_props = config_props, },
+ { .name = NULL }},
+};
--
1.7.2.5
More information about the ffmpeg-devel
mailing list