... | ... |
@@ -1901,6 +1901,7 @@ decimate_filter_deps="gpl avcodec" |
1901 | 1901 |
delogo_filter_deps="gpl" |
1902 | 1902 |
deshake_filter_deps="avcodec" |
1903 | 1903 |
drawtext_filter_deps="libfreetype" |
1904 |
+ebur128_filter_deps="gpl" |
|
1904 | 1905 |
flite_filter_deps="libflite" |
1905 | 1906 |
frei0r_filter_deps="frei0r dlopen" |
1906 | 1907 |
frei0r_filter_extralibs='$ldl' |
... | ... |
@@ -4480,6 +4480,53 @@ setpts=PTS+10/TB |
4480 | 4480 |
@end example |
4481 | 4481 |
@end itemize |
4482 | 4482 |
|
4483 |
+@section ebur128 |
|
4484 |
+ |
|
4485 |
+EBU R128 scanner filter. This filter takes an audio stream as input and outputs |
|
4486 |
+it unchanged. By default, it logs a message at a frequency of 10Hz with the |
|
4487 |
+Momentary loudness (identified by @code{M}), Short-term loudness (@code{S}), |
|
4488 |
+Integrated loudness (@code{I}) and Loudness Range (@code{LRA}). |
|
4489 |
+ |
|
4490 |
+The filter also has a video output (see the @var{video} option) with a real |
|
4491 |
+time graph to observe the loudness evolution. The graphic contains the logged |
|
4492 |
+message mentioned above, so it is not printed anymore when this option is set, |
|
4493 |
+unless the verbose logging is set. The main graphing area contains the |
|
4494 |
+short-term loudness (3 seconds of analysis), and the gauge on the right is for |
|
4495 |
+the momentary loudness (400 milliseconds). |
|
4496 |
+ |
|
4497 |
+More information about the Loudness Recommendation EBU R128 on |
|
4498 |
+@url{http://tech.ebu.ch/loudness}. |
|
4499 |
+ |
|
4500 |
+The filter accepts the following named parameters: |
|
4501 |
+ |
|
4502 |
+@table @option |
|
4503 |
+ |
|
4504 |
+@item video |
|
4505 |
+Activate the video output. The audio stream is passed unchanged whether this |
|
4506 |
+option is set or no. The video stream will be the first output stream if |
|
4507 |
+activated. Default is @code{0}. |
|
4508 |
+ |
|
4509 |
+@item size |
|
4510 |
+Set the video size. This option is for video only. Default and minimum |
|
4511 |
+resolution is @code{640x480}. |
|
4512 |
+ |
|
4513 |
+@item meter |
|
4514 |
+Set the EBU scale meter. Default is @code{9}. Common values are @code{9} and |
|
4515 |
+@code{18}, respectively for EBU scale meter +9 and EBU scale meter +18. Any |
|
4516 |
+other integer value between this range is allowed. |
|
4517 |
+ |
|
4518 |
+@end table |
|
4519 |
+ |
|
4520 |
+Example of real-time graph using @command{ffplay}, with a EBU scale meter +18: |
|
4521 |
+@example |
|
4522 |
+ffplay -f lavfi -i "amovie=input.mp3,ebur128=video=1:meter=18 [out0][out1]" |
|
4523 |
+@end example |
|
4524 |
+ |
|
4525 |
+Run an analysis with @command{ffmpeg}: |
|
4526 |
+@example |
|
4527 |
+ffmpeg -nostats -i input.mp3 -filter_complex ebur128 -f null - |
|
4528 |
+@end example |
|
4529 |
+ |
|
4483 | 4530 |
@section settb, asettb |
4484 | 4531 |
|
4485 | 4532 |
Set the timebase to use for the output frames timestamps. |
... | ... |
@@ -66,6 +66,7 @@ OBJS-$(CONFIG_ATEMPO_FILTER) += af_atempo.o |
66 | 66 |
OBJS-$(CONFIG_CHANNELMAP_FILTER) += af_channelmap.o |
67 | 67 |
OBJS-$(CONFIG_CHANNELSPLIT_FILTER) += af_channelsplit.o |
68 | 68 |
OBJS-$(CONFIG_EARWAX_FILTER) += af_earwax.o |
69 |
+OBJS-$(CONFIG_EBUR128_FILTER) += f_ebur128.o |
|
69 | 70 |
OBJS-$(CONFIG_JOIN_FILTER) += af_join.o |
70 | 71 |
OBJS-$(CONFIG_PAN_FILTER) += af_pan.o |
71 | 72 |
OBJS-$(CONFIG_RESAMPLE_FILTER) += af_resample.o |
... | ... |
@@ -58,6 +58,7 @@ void avfilter_register_all(void) |
58 | 58 |
REGISTER_FILTER (CHANNELMAP, channelmap, af); |
59 | 59 |
REGISTER_FILTER (CHANNELSPLIT,channelsplit,af); |
60 | 60 |
REGISTER_FILTER (EARWAX, earwax, af); |
61 |
+ REGISTER_FILTER (EBUR128, ebur128, af); |
|
61 | 62 |
REGISTER_FILTER (JOIN, join, af); |
62 | 63 |
REGISTER_FILTER (PAN, pan, af); |
63 | 64 |
REGISTER_FILTER (SILENCEDETECT, silencedetect, af); |
64 | 65 |
new file mode 100644 |
... | ... |
@@ -0,0 +1,747 @@ |
0 |
+/* |
|
1 |
+ * Copyright (c) 2012 Clément Bœsch |
|
2 |
+ * |
|
3 |
+ * This file is part of FFmpeg. |
|
4 |
+ * |
|
5 |
+ * FFmpeg is free software; you can redistribute it and/or modify |
|
6 |
+ * it under the terms of the GNU General Public License as published by |
|
7 |
+ * the Free Software Foundation; either version 2 of the License, or |
|
8 |
+ * (at your option) any later version. |
|
9 |
+ * |
|
10 |
+ * FFmpeg is distributed in the hope that it will be useful, |
|
11 |
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
12 |
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
13 |
+ * GNU General Public License for more details. |
|
14 |
+ * |
|
15 |
+ * You should have received a copy of the GNU General Public License along |
|
16 |
+ * with FFmpeg; if not, write to the Free Software Foundation, Inc., |
|
17 |
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
|
18 |
+ */ |
|
19 |
+ |
|
20 |
+/** |
|
21 |
+ * @file |
|
22 |
+ * EBU R.128 implementation |
|
23 |
+ * @see http://tech.ebu.ch/loudness |
|
24 |
+ * @see https://www.youtube.com/watch?v=iuEtQqC-Sqo "EBU R128 Introduction - Florian Camerer" |
|
25 |
+ * @todo True Peak |
|
26 |
+ * @todo implement start/stop/reset through filter command injection |
|
27 |
+ * @todo support other frequencies to avoid resampling |
|
28 |
+ */ |
|
29 |
+ |
|
30 |
+#include <math.h> |
|
31 |
+ |
|
32 |
+#include "libavutil/audioconvert.h" |
|
33 |
+#include "libavutil/avassert.h" |
|
34 |
+#include "libavutil/avstring.h" |
|
35 |
+#include "libavutil/xga_font_data.h" |
|
36 |
+#include "libavutil/opt.h" |
|
37 |
+#include "libavutil/timestamp.h" |
|
38 |
+#include "audio.h" |
|
39 |
+#include "avfilter.h" |
|
40 |
+#include "formats.h" |
|
41 |
+#include "internal.h" |
|
42 |
+ |
|
43 |
+#define MAX_CHANNELS 63 |
|
44 |
+ |
|
45 |
+/* pre-filter coefficients */ |
|
46 |
+#define PRE_B0 1.53512485958697 |
|
47 |
+#define PRE_B1 -2.69169618940638 |
|
48 |
+#define PRE_B2 1.19839281085285 |
|
49 |
+#define PRE_A1 -1.69065929318241 |
|
50 |
+#define PRE_A2 0.73248077421585 |
|
51 |
+ |
|
52 |
+/* RLB-filter coefficients */ |
|
53 |
+#define RLB_B0 1.0 |
|
54 |
+#define RLB_B1 -2.0 |
|
55 |
+#define RLB_B2 1.0 |
|
56 |
+#define RLB_A1 -1.99004745483398 |
|
57 |
+#define RLB_A2 0.99007225036621 |
|
58 |
+ |
|
59 |
+#define ABS_THRES -70 ///< silence gate: we discard anything below this absolute (LUFS) threshold |
|
60 |
+#define ABS_UP_THRES 10 ///< upper loud limit to consider (ABS_THRES being the minimum) |
|
61 |
+#define HIST_GRAIN 100 ///< defines histogram precision |
|
62 |
+#define HIST_SIZE ((ABS_UP_THRES - ABS_THRES) * HIST_GRAIN + 1) |
|
63 |
+ |
|
64 |
+/** |
|
65 |
+ * An histogram is an array of HIST_SIZE hist_entry storing all the energies |
|
66 |
+ * recorded (with an accuracy of 1/HIST_GRAIN) of the loudnesses from ABS_THRES |
|
67 |
+ * (at 0) to ABS_UP_THRES (at HIST_SIZE-1). |
|
68 |
+ * This fixed-size system avoids the need of a list of energies growing |
|
69 |
+ * infinitely over the time and is thus more scalable. |
|
70 |
+ */ |
|
71 |
+struct hist_entry { |
|
72 |
+ int count; ///< how many times the corresponding value occurred |
|
73 |
+ double energy; ///< E = 10^((L + 0.691) / 10) |
|
74 |
+ double loudness; ///< L = -0.691 + 10 * log10(E) |
|
75 |
+}; |
|
76 |
+ |
|
77 |
+struct integrator { |
|
78 |
+ double *cache[MAX_CHANNELS]; ///< window of filtered samples (N ms) |
|
79 |
+ int cache_pos; ///< focus on the last added bin in the cache array |
|
80 |
+ double sum[MAX_CHANNELS]; ///< sum of the last N ms filtered samples (cache content) |
|
81 |
+ int filled; ///< 1 if the cache is completely filled, 0 otherwise |
|
82 |
+ double rel_threshold; ///< relative threshold |
|
83 |
+ double sum_kept_powers; ///< sum of the powers (weighted sums) above absolute threshold |
|
84 |
+ int nb_kept_powers; ///< number of sum above absolute threshold |
|
85 |
+ struct hist_entry *histogram; ///< histogram of the powers, used to compute LRA and I |
|
86 |
+}; |
|
87 |
+ |
|
88 |
+struct rect { int x, y, w, h; }; |
|
89 |
+ |
|
90 |
+typedef struct { |
|
91 |
+ const AVClass *class; ///< AVClass context for log and options purpose |
|
92 |
+ |
|
93 |
+ /* video */ |
|
94 |
+ int do_video; ///< 1 if video output enabled, 0 otherwise |
|
95 |
+ int w, h; ///< size of the video output |
|
96 |
+ struct rect text; ///< rectangle for the LU legend on the left |
|
97 |
+ struct rect graph; ///< rectangle for the main graph in the center |
|
98 |
+ struct rect gauge; ///< rectangle for the gauge on the right |
|
99 |
+ AVFilterBufferRef *outpicref; ///< output picture reference, updated regularly |
|
100 |
+ int meter; ///< select a EBU mode between +9 and +18 |
|
101 |
+ int scale_range; ///< the range of LU values according to the meter |
|
102 |
+ int y_zero_lu; ///< the y value (pixel position) for 0 LU |
|
103 |
+ int *y_line_ref; ///< y reference values for drawing the LU lines in the graph and the gauge |
|
104 |
+ |
|
105 |
+ /* audio */ |
|
106 |
+ int nb_channels; ///< number of channels in the input |
|
107 |
+ double *ch_weighting; ///< channel weighting mapping |
|
108 |
+ int sample_count; ///< sample count used for refresh frequency, reset at refresh |
|
109 |
+ |
|
110 |
+ /* Filter caches. |
|
111 |
+ * The mult by 3 in the following is for X[i], X[i-1] and X[i-2] */ |
|
112 |
+ double x[MAX_CHANNELS * 3]; ///< 3 input samples cache for each channel |
|
113 |
+ double y[MAX_CHANNELS * 3]; ///< 3 pre-filter samples cache for each channel |
|
114 |
+ double z[MAX_CHANNELS * 3]; ///< 3 RLB-filter samples cache for each channel |
|
115 |
+ |
|
116 |
+#define I400_BINS (48000 * 4 / 10) |
|
117 |
+#define I3000_BINS (48000 * 3) |
|
118 |
+ struct integrator i400; ///< 400ms integrator, used for Momentary loudness (M), and Integrated loudness (I) |
|
119 |
+ struct integrator i3000; ///< 3s integrator, used for Short term loudness (S), and Loudness Range (LRA) |
|
120 |
+ |
|
121 |
+ /* I and LRA specific */ |
|
122 |
+ double integrated_loudness; ///< integrated loudness in LUFS (I) |
|
123 |
+ double loudness_range; ///< loudness range in LU (LRA) |
|
124 |
+ double lra_low, lra_high; ///< low and high LRA values |
|
125 |
+} EBUR128Context; |
|
126 |
+ |
|
127 |
+#define OFFSET(x) offsetof(EBUR128Context, x) |
|
128 |
+#define A AV_OPT_FLAG_AUDIO_PARAM |
|
129 |
+#define V AV_OPT_FLAG_VIDEO_PARAM |
|
130 |
+#define F AV_OPT_FLAG_FILTERING_PARAM |
|
131 |
+static const AVOption ebur128_options[] = { |
|
132 |
+ { "video", "set video output", OFFSET(do_video), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, V|F }, |
|
133 |
+ { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x480"}, 0, 0, V|F }, |
|
134 |
+ { "meter", "set scale meter (+9 to +18)", OFFSET(meter), AV_OPT_TYPE_INT, {.i64 = 9}, 9, 18, V|F }, |
|
135 |
+ { NULL }, |
|
136 |
+}; |
|
137 |
+ |
|
138 |
+AVFILTER_DEFINE_CLASS(ebur128); |
|
139 |
+ |
|
140 |
+static const uint8_t graph_colors[] = { |
|
141 |
+ 0xdd, 0x66, 0x66, // value above 0LU non reached |
|
142 |
+ 0x66, 0x66, 0xdd, // value below 0LU non reached |
|
143 |
+ 0x96, 0x33, 0x33, // value above 0LU reached |
|
144 |
+ 0x33, 0x33, 0x96, // value below 0LU reached |
|
145 |
+ 0xdd, 0x96, 0x96, // value above 0LU line non reached |
|
146 |
+ 0x96, 0x96, 0xdd, // value below 0LU line non reached |
|
147 |
+ 0xdd, 0x33, 0x33, // value above 0LU line reached |
|
148 |
+ 0x33, 0x33, 0xdd, // value below 0LU line reached |
|
149 |
+}; |
|
150 |
+ |
|
151 |
+static const uint8_t *get_graph_color(const EBUR128Context *ebur128, int v, int y) |
|
152 |
+{ |
|
153 |
+ const int below0 = y > ebur128->y_zero_lu; |
|
154 |
+ const int reached = y >= v; |
|
155 |
+ const int line = ebur128->y_line_ref[y] || y == ebur128->y_zero_lu; |
|
156 |
+ const int colorid = 4*line + 2*reached + below0; |
|
157 |
+ return graph_colors + 3*colorid; |
|
158 |
+} |
|
159 |
+ |
|
160 |
+static inline int lu_to_y(const EBUR128Context *ebur128, double v) |
|
161 |
+{ |
|
162 |
+ v += 2 * ebur128->meter; // make it in range [0;...] |
|
163 |
+ v = av_clipf(v, 0, ebur128->scale_range); // make sure it's in the graph scale |
|
164 |
+ v = ebur128->scale_range - v; // invert value (y=0 is on top) |
|
165 |
+ return v * ebur128->graph.h / ebur128->scale_range; // rescale from scale range to px height |
|
166 |
+} |
|
167 |
+ |
|
168 |
+#define FONT8 0 |
|
169 |
+#define FONT16 1 |
|
170 |
+ |
|
171 |
+static const uint8_t font_colors[] = { |
|
172 |
+ 0xdd, 0xdd, 0x00, |
|
173 |
+ 0x00, 0x96, 0x96, |
|
174 |
+}; |
|
175 |
+ |
|
176 |
+static void drawtext(AVFilterBufferRef *pic, int x, int y, int ftid, const uint8_t *color, const char *fmt, ...) |
|
177 |
+{ |
|
178 |
+ int i; |
|
179 |
+ char buf[128] = {0}; |
|
180 |
+ const uint8_t *font; |
|
181 |
+ int font_height; |
|
182 |
+ va_list vl; |
|
183 |
+ |
|
184 |
+ if (ftid == FONT16) font = avpriv_vga16_font, font_height = 16; |
|
185 |
+ else if (ftid == FONT8) font = avpriv_cga_font, font_height = 8; |
|
186 |
+ else return; |
|
187 |
+ |
|
188 |
+ va_start(vl, fmt); |
|
189 |
+ vsnprintf(buf, sizeof(buf), fmt, vl); |
|
190 |
+ va_end(vl); |
|
191 |
+ |
|
192 |
+ for (i = 0; buf[i]; i++) { |
|
193 |
+ int char_y, mask; |
|
194 |
+ uint8_t *p = pic->data[0] + y*pic->linesize[0] + (x + i*8)*3; |
|
195 |
+ |
|
196 |
+ for (char_y = 0; char_y < font_height; char_y++) { |
|
197 |
+ for (mask = 0x80; mask; mask >>= 1) { |
|
198 |
+ if (font[buf[i] * font_height + char_y] & mask) |
|
199 |
+ memcpy(p, color, 3); |
|
200 |
+ else |
|
201 |
+ memcpy(p, "\x00\x00\x00", 3); |
|
202 |
+ p += 3; |
|
203 |
+ } |
|
204 |
+ p += pic->linesize[0] - 8*3; |
|
205 |
+ } |
|
206 |
+ } |
|
207 |
+} |
|
208 |
+ |
|
209 |
+static void drawline(AVFilterBufferRef *pic, int x, int y, int len, int step) |
|
210 |
+{ |
|
211 |
+ int i; |
|
212 |
+ uint8_t *p = pic->data[0] + y*pic->linesize[0] + x*3; |
|
213 |
+ |
|
214 |
+ for (i = 0; i < len; i++) { |
|
215 |
+ memcpy(p, "\x00\xff\x00", 3); |
|
216 |
+ p += step; |
|
217 |
+ } |
|
218 |
+} |
|
219 |
+ |
|
220 |
+static int config_video_output(AVFilterLink *outlink) |
|
221 |
+{ |
|
222 |
+ int i, x, y; |
|
223 |
+ uint8_t *p; |
|
224 |
+ AVFilterContext *ctx = outlink->src; |
|
225 |
+ EBUR128Context *ebur128 = ctx->priv; |
|
226 |
+ AVFilterBufferRef *outpicref; |
|
227 |
+ |
|
228 |
+ /* check if there is enough space to represent everything decently */ |
|
229 |
+ if (ebur128->w < 640 || ebur128->h < 480) { |
|
230 |
+ av_log(ctx, AV_LOG_ERROR, "Video size %dx%d is too small, " |
|
231 |
+ "minimum size is 640x480\n", ebur128->w, ebur128->h); |
|
232 |
+ return AVERROR(EINVAL); |
|
233 |
+ } |
|
234 |
+ outlink->w = ebur128->w; |
|
235 |
+ outlink->h = ebur128->h; |
|
236 |
+ |
|
237 |
+#define PAD 8 |
|
238 |
+ |
|
239 |
+ /* configure text area position and size */ |
|
240 |
+ ebur128->text.x = PAD; |
|
241 |
+ ebur128->text.y = 40; |
|
242 |
+ ebur128->text.w = 3 * 8; // 3 characters |
|
243 |
+ ebur128->text.h = ebur128->h - PAD - ebur128->text.y; |
|
244 |
+ |
|
245 |
+ /* configure gauge position and size */ |
|
246 |
+ ebur128->gauge.w = 20; |
|
247 |
+ ebur128->gauge.h = ebur128->text.h; |
|
248 |
+ ebur128->gauge.x = ebur128->w - PAD - ebur128->gauge.w; |
|
249 |
+ ebur128->gauge.y = ebur128->text.y; |
|
250 |
+ |
|
251 |
+ /* configure graph position and size */ |
|
252 |
+ ebur128->graph.x = ebur128->text.x + ebur128->text.w + PAD; |
|
253 |
+ ebur128->graph.y = ebur128->gauge.y; |
|
254 |
+ ebur128->graph.w = ebur128->gauge.x - ebur128->graph.x - PAD; |
|
255 |
+ ebur128->graph.h = ebur128->gauge.h; |
|
256 |
+ |
|
257 |
+ /* graph and gauge share the LU-to-pixel code */ |
|
258 |
+ av_assert0(ebur128->graph.h == ebur128->gauge.h); |
|
259 |
+ |
|
260 |
+ /* prepare the initial picref buffer */ |
|
261 |
+ avfilter_unref_bufferp(&ebur128->outpicref); |
|
262 |
+ ebur128->outpicref = outpicref = |
|
263 |
+ ff_get_video_buffer(outlink, AV_PERM_WRITE|AV_PERM_PRESERVE|AV_PERM_REUSE2, |
|
264 |
+ outlink->w, outlink->h); |
|
265 |
+ if (!outpicref) |
|
266 |
+ return AVERROR(ENOMEM); |
|
267 |
+ outlink->sample_aspect_ratio = (AVRational){1,1}; |
|
268 |
+ |
|
269 |
+ /* init y references values (to draw LU lines) */ |
|
270 |
+ ebur128->y_line_ref = av_calloc(ebur128->graph.h + 1, sizeof(*ebur128->y_line_ref)); |
|
271 |
+ if (!ebur128->y_line_ref) |
|
272 |
+ return AVERROR(ENOMEM); |
|
273 |
+ |
|
274 |
+ /* black background */ |
|
275 |
+ memset(outpicref->data[0], 0, ebur128->h * outpicref->linesize[0]); |
|
276 |
+ |
|
277 |
+ /* draw LU legends */ |
|
278 |
+ drawtext(outpicref, PAD, PAD+16, FONT8, font_colors+3, " LU"); |
|
279 |
+ for (i = ebur128->meter; i >= -ebur128->meter * 2; i--) { |
|
280 |
+ y = lu_to_y(ebur128, i); |
|
281 |
+ x = PAD + (i < 10 && i > -10) * 8; |
|
282 |
+ ebur128->y_line_ref[y] = i; |
|
283 |
+ y -= 4; // -4 to center vertically |
|
284 |
+ drawtext(outpicref, x, y + ebur128->graph.y, FONT8, font_colors+3, |
|
285 |
+ "%c%d", i < 0 ? '-' : i > 0 ? '+' : ' ', FFABS(i)); |
|
286 |
+ } |
|
287 |
+ |
|
288 |
+ /* draw graph */ |
|
289 |
+ ebur128->y_zero_lu = lu_to_y(ebur128, 0); |
|
290 |
+ p = outpicref->data[0] + ebur128->graph.y * outpicref->linesize[0] |
|
291 |
+ + ebur128->graph.x * 3; |
|
292 |
+ for (y = 0; y < ebur128->graph.h; y++) { |
|
293 |
+ const uint8_t *c = get_graph_color(ebur128, INT_MAX, y); |
|
294 |
+ |
|
295 |
+ for (x = 0; x < ebur128->graph.w; x++) |
|
296 |
+ memcpy(p + x*3, c, 3); |
|
297 |
+ p += outpicref->linesize[0]; |
|
298 |
+ } |
|
299 |
+ |
|
300 |
+ /* draw fancy rectangles around the graph and the gauge */ |
|
301 |
+#define DRAW_RECT(r) do { \ |
|
302 |
+ drawline(outpicref, r.x, r.y - 1, r.w, 3); \ |
|
303 |
+ drawline(outpicref, r.x, r.y + r.h, r.w, 3); \ |
|
304 |
+ drawline(outpicref, r.x - 1, r.y, r.h, outpicref->linesize[0]); \ |
|
305 |
+ drawline(outpicref, r.x + r.w, r.y, r.h, outpicref->linesize[0]); \ |
|
306 |
+} while (0) |
|
307 |
+ DRAW_RECT(ebur128->graph); |
|
308 |
+ DRAW_RECT(ebur128->gauge); |
|
309 |
+ |
|
310 |
+ return 0; |
|
311 |
+} |
|
312 |
+ |
|
313 |
+static int config_audio_output(AVFilterLink *outlink) |
|
314 |
+{ |
|
315 |
+ int i; |
|
316 |
+ AVFilterContext *ctx = outlink->src; |
|
317 |
+ EBUR128Context *ebur128 = ctx->priv; |
|
318 |
+ const int nb_channels = av_get_channel_layout_nb_channels(outlink->channel_layout); |
|
319 |
+ |
|
320 |
+#define BACK_MASK (AV_CH_BACK_LEFT |AV_CH_BACK_CENTER |AV_CH_BACK_RIGHT| \ |
|
321 |
+ AV_CH_TOP_BACK_LEFT|AV_CH_TOP_BACK_CENTER|AV_CH_TOP_BACK_RIGHT) |
|
322 |
+ |
|
323 |
+ ebur128->nb_channels = nb_channels; |
|
324 |
+ ebur128->ch_weighting = av_calloc(nb_channels, sizeof(*ebur128->ch_weighting)); |
|
325 |
+ if (!ebur128->ch_weighting) |
|
326 |
+ return AVERROR(ENOMEM); |
|
327 |
+ |
|
328 |
+ for (i = 0; i < nb_channels; i++) { |
|
329 |
+ |
|
330 |
+ /* channel weighting */ |
|
331 |
+ if ((outlink->channel_layout & 1ULL<<i) == AV_CH_LOW_FREQUENCY) |
|
332 |
+ continue; |
|
333 |
+ if (outlink->channel_layout & 1ULL<<i & BACK_MASK) |
|
334 |
+ ebur128->ch_weighting[i] = 1.41; |
|
335 |
+ else |
|
336 |
+ ebur128->ch_weighting[i] = 1.0; |
|
337 |
+ |
|
338 |
+ /* bins buffer for the two integration window (400ms and 3s) */ |
|
339 |
+ ebur128->i400.cache[i] = av_calloc(I400_BINS, sizeof(*ebur128->i400.cache[0])); |
|
340 |
+ ebur128->i3000.cache[i] = av_calloc(I3000_BINS, sizeof(*ebur128->i3000.cache[0])); |
|
341 |
+ if (!ebur128->i400.cache[i] || !ebur128->i3000.cache[i]) |
|
342 |
+ return AVERROR(ENOMEM); |
|
343 |
+ } |
|
344 |
+ |
|
345 |
+ return 0; |
|
346 |
+} |
|
347 |
+ |
|
348 |
+#define ENERGY(loudness) (pow(10, ((loudness) + 0.691) / 10.)) |
|
349 |
+#define LOUDNESS(energy) (-0.691 + 10 * log10(energy)) |
|
350 |
+ |
|
351 |
+static struct hist_entry *get_histogram(void) |
|
352 |
+{ |
|
353 |
+ int i; |
|
354 |
+ struct hist_entry *h = av_calloc(HIST_SIZE, sizeof(*h)); |
|
355 |
+ |
|
356 |
+ for (i = 0; i < HIST_SIZE; i++) { |
|
357 |
+ h[i].loudness = i / (double)HIST_GRAIN + ABS_THRES; |
|
358 |
+ h[i].energy = ENERGY(h[i].loudness); |
|
359 |
+ } |
|
360 |
+ return h; |
|
361 |
+} |
|
362 |
+ |
|
363 |
+static av_cold int init(AVFilterContext *ctx, const char *args) |
|
364 |
+{ |
|
365 |
+ int ret; |
|
366 |
+ EBUR128Context *ebur128 = ctx->priv; |
|
367 |
+ AVFilterPad pad; |
|
368 |
+ |
|
369 |
+ ebur128->class = &ebur128_class; |
|
370 |
+ av_opt_set_defaults(ebur128); |
|
371 |
+ |
|
372 |
+ if ((ret = av_set_options_string(ebur128, args, "=", ":")) < 0) |
|
373 |
+ return ret; |
|
374 |
+ |
|
375 |
+ // if meter is +9 scale, scale range is from -18 LU to +9 LU (or 3*9) |
|
376 |
+ // if meter is +18 scale, scale range is from -36 LU to +18 LU (or 3*18) |
|
377 |
+ ebur128->scale_range = 3 * ebur128->meter; |
|
378 |
+ |
|
379 |
+ ebur128->i400.histogram = get_histogram(); |
|
380 |
+ ebur128->i3000.histogram = get_histogram(); |
|
381 |
+ |
|
382 |
+ ebur128->integrated_loudness = ABS_THRES; |
|
383 |
+ ebur128->loudness_range = 0; |
|
384 |
+ |
|
385 |
+ /* insert output pads */ |
|
386 |
+ if (ebur128->do_video) { |
|
387 |
+ pad = (AVFilterPad){ |
|
388 |
+ .name = av_strdup("out0"), |
|
389 |
+ .type = AVMEDIA_TYPE_VIDEO, |
|
390 |
+ .config_props = config_video_output, |
|
391 |
+ }; |
|
392 |
+ if (!pad.name) |
|
393 |
+ return AVERROR(ENOMEM); |
|
394 |
+ ff_insert_outpad(ctx, 0, &pad); |
|
395 |
+ } |
|
396 |
+ pad = (AVFilterPad){ |
|
397 |
+ .name = av_asprintf("out%d", ebur128->do_video), |
|
398 |
+ .type = AVMEDIA_TYPE_AUDIO, |
|
399 |
+ .config_props = config_audio_output, |
|
400 |
+ }; |
|
401 |
+ if (!pad.name) |
|
402 |
+ return AVERROR(ENOMEM); |
|
403 |
+ ff_insert_outpad(ctx, ebur128->do_video, &pad); |
|
404 |
+ |
|
405 |
+ /* summary */ |
|
406 |
+ av_log(ctx, AV_LOG_VERBOSE, "EBU +%d scale\n", ebur128->meter); |
|
407 |
+ |
|
408 |
+ return 0; |
|
409 |
+} |
|
410 |
+ |
|
411 |
+#define HIST_POS(power) (int)(((power) - ABS_THRES) * HIST_GRAIN) |
|
412 |
+ |
|
413 |
+/* loudness and power should be set such as loudness = -0.691 + |
|
414 |
+ * 10*log10(power), we just avoid doing that calculus two times */ |
|
415 |
+static int gate_update(struct integrator *integ, double power, |
|
416 |
+ double loudness, int gate_thres) |
|
417 |
+{ |
|
418 |
+ int ipower; |
|
419 |
+ double relative_threshold; |
|
420 |
+ int gate_hist_pos; |
|
421 |
+ |
|
422 |
+ /* update powers histograms by incrementing current power count */ |
|
423 |
+ ipower = av_clip(HIST_POS(loudness), 0, HIST_SIZE - 1); |
|
424 |
+ integ->histogram[ipower].count++; |
|
425 |
+ |
|
426 |
+ /* compute relative threshold and get its position in the histogram */ |
|
427 |
+ integ->sum_kept_powers += power; |
|
428 |
+ integ->nb_kept_powers++; |
|
429 |
+ relative_threshold = integ->sum_kept_powers / integ->nb_kept_powers; |
|
430 |
+ if (!relative_threshold) |
|
431 |
+ relative_threshold = 1e-12; |
|
432 |
+ integ->rel_threshold = LOUDNESS(relative_threshold) + gate_thres; |
|
433 |
+ gate_hist_pos = av_clip(HIST_POS(integ->rel_threshold), 0, HIST_SIZE - 1); |
|
434 |
+ |
|
435 |
+ return gate_hist_pos; |
|
436 |
+} |
|
437 |
+ |
|
438 |
+static int filter_samples(AVFilterLink *inlink, AVFilterBufferRef *insamples) |
|
439 |
+{ |
|
440 |
+ int i, ch; |
|
441 |
+ AVFilterContext *ctx = inlink->dst; |
|
442 |
+ EBUR128Context *ebur128 = ctx->priv; |
|
443 |
+ const int nb_channels = ebur128->nb_channels; |
|
444 |
+ const int nb_samples = insamples->audio->nb_samples; |
|
445 |
+ const double *samples = (double *)insamples->data[0]; |
|
446 |
+ AVFilterBufferRef *pic = ebur128->outpicref; |
|
447 |
+ |
|
448 |
+ for (i = 0; i < nb_samples; i++) { |
|
449 |
+ const int bin_id_400 = ebur128->i400.cache_pos; |
|
450 |
+ const int bin_id_3000 = ebur128->i3000.cache_pos; |
|
451 |
+ |
|
452 |
+#define MOVE_TO_NEXT_CACHED_ENTRY(time) do { \ |
|
453 |
+ ebur128->i##time.cache_pos++; \ |
|
454 |
+ if (ebur128->i##time.cache_pos == I##time##_BINS) { \ |
|
455 |
+ ebur128->i##time.filled = 1; \ |
|
456 |
+ ebur128->i##time.cache_pos = 0; \ |
|
457 |
+ } \ |
|
458 |
+} while (0) |
|
459 |
+ |
|
460 |
+ MOVE_TO_NEXT_CACHED_ENTRY(400); |
|
461 |
+ MOVE_TO_NEXT_CACHED_ENTRY(3000); |
|
462 |
+ |
|
463 |
+ for (ch = 0; ch < nb_channels; ch++) { |
|
464 |
+ double bin; |
|
465 |
+ |
|
466 |
+ if (!ebur128->ch_weighting[ch]) |
|
467 |
+ continue; |
|
468 |
+ |
|
469 |
+ /* Y[i] = X[i]*b0 + X[i-1]*b1 + X[i-2]*b2 - Y[i-1]*a1 - Y[i-2]*a2 */ |
|
470 |
+#define FILTER(Y, X, name) do { \ |
|
471 |
+ double *dst = ebur128->Y + ch*3; \ |
|
472 |
+ double *src = ebur128->X + ch*3; \ |
|
473 |
+ dst[2] = dst[1]; \ |
|
474 |
+ dst[1] = dst[0]; \ |
|
475 |
+ dst[0] = src[0]*name##_B0 + src[1]*name##_B1 + src[2]*name##_B2 \ |
|
476 |
+ - dst[1]*name##_A1 - dst[2]*name##_A2; \ |
|
477 |
+} while (0) |
|
478 |
+ |
|
479 |
+ ebur128->x[ch * 3] = *samples++; // set X[i] |
|
480 |
+ |
|
481 |
+ // TODO: merge both filters in one? |
|
482 |
+ FILTER(y, x, PRE); // apply pre-filter |
|
483 |
+ ebur128->x[ch * 3 + 2] = ebur128->x[ch * 3 + 1]; |
|
484 |
+ ebur128->x[ch * 3 + 1] = ebur128->x[ch * 3 ]; |
|
485 |
+ FILTER(z, y, RLB); // apply RLB-filter |
|
486 |
+ |
|
487 |
+ bin = ebur128->z[ch * 3] * ebur128->z[ch * 3]; |
|
488 |
+ |
|
489 |
+ /* add the new value, and limit the sum to the cache size (400ms or 3s) |
|
490 |
+ * by removing the oldest one */ |
|
491 |
+ ebur128->i400.sum [ch] = ebur128->i400.sum [ch] + bin - ebur128->i400.cache [ch][bin_id_400]; |
|
492 |
+ ebur128->i3000.sum[ch] = ebur128->i3000.sum[ch] + bin - ebur128->i3000.cache[ch][bin_id_3000]; |
|
493 |
+ |
|
494 |
+ /* override old cache entry with the new value */ |
|
495 |
+ ebur128->i400.cache [ch][bin_id_400 ] = bin; |
|
496 |
+ ebur128->i3000.cache[ch][bin_id_3000] = bin; |
|
497 |
+ } |
|
498 |
+ |
|
499 |
+ /* For integrated loudness, gating blocks are 400ms long with 75% |
|
500 |
+ * overlap (see BS.1770-2 p5), so a re-computation is needed each 100ms |
|
501 |
+ * (4800 samples at 48kHz). */ |
|
502 |
+ if (++ebur128->sample_count == 4800) { |
|
503 |
+ double loudness_400, loudness_3000; |
|
504 |
+ double power_400 = 1e-12, power_3000 = 1e-12; |
|
505 |
+ AVFilterLink *outlink = ctx->outputs[0]; |
|
506 |
+ const int64_t pts = insamples->pts + |
|
507 |
+ av_rescale_q(i, (AVRational){ 1, inlink->sample_rate }, |
|
508 |
+ outlink->time_base); |
|
509 |
+ |
|
510 |
+ ebur128->sample_count = 0; |
|
511 |
+ |
|
512 |
+#define COMPUTE_LOUDNESS(m, time) do { \ |
|
513 |
+ if (ebur128->i##time.filled) { \ |
|
514 |
+ /* weighting sum of the last <time> ms */ \ |
|
515 |
+ for (ch = 0; ch < nb_channels; ch++) \ |
|
516 |
+ power_##time += ebur128->ch_weighting[ch] * ebur128->i##time.sum[ch]; \ |
|
517 |
+ power_##time /= I##time##_BINS; \ |
|
518 |
+ } \ |
|
519 |
+ loudness_##time = LOUDNESS(power_##time); \ |
|
520 |
+} while (0) |
|
521 |
+ |
|
522 |
+ COMPUTE_LOUDNESS(M, 400); |
|
523 |
+ COMPUTE_LOUDNESS(S, 3000); |
|
524 |
+ |
|
525 |
+ /* Integrated loudness */ |
|
526 |
+#define I_GATE_THRES -10 // initially defined to -8 LU in the first EBU standard |
|
527 |
+ |
|
528 |
+ if (loudness_400 >= ABS_THRES) { |
|
529 |
+ double integrated_sum = 0; |
|
530 |
+ int nb_integrated = 0; |
|
531 |
+ int gate_hist_pos = gate_update(&ebur128->i400, power_400, |
|
532 |
+ loudness_400, I_GATE_THRES); |
|
533 |
+ |
|
534 |
+ /* compute integrated loudness by summing the histogram values |
|
535 |
+ * above the relative threshold */ |
|
536 |
+ for (i = gate_hist_pos; i < HIST_SIZE; i++) { |
|
537 |
+ const int nb_v = ebur128->i400.histogram[i].count; |
|
538 |
+ nb_integrated += nb_v; |
|
539 |
+ integrated_sum += nb_v * ebur128->i400.histogram[i].energy; |
|
540 |
+ } |
|
541 |
+ if (nb_integrated) |
|
542 |
+ ebur128->integrated_loudness = LOUDNESS(integrated_sum / nb_integrated); |
|
543 |
+ } |
|
544 |
+ |
|
545 |
+ /* LRA */ |
|
546 |
+#define LRA_GATE_THRES -20 |
|
547 |
+#define LRA_LOWER_PRC 10 |
|
548 |
+#define LRA_HIGHER_PRC 95 |
|
549 |
+ |
|
550 |
+ /* XXX: example code in EBU 3342 is ">=" but formula in BS.1770 |
|
551 |
+ * specs is ">" */ |
|
552 |
+ if (loudness_3000 >= ABS_THRES) { |
|
553 |
+ int nb_powers = 0; |
|
554 |
+ int gate_hist_pos = gate_update(&ebur128->i3000, power_3000, |
|
555 |
+ loudness_3000, LRA_GATE_THRES); |
|
556 |
+ |
|
557 |
+ for (i = gate_hist_pos; i < HIST_SIZE; i++) |
|
558 |
+ nb_powers += ebur128->i3000.histogram[i].count; |
|
559 |
+ if (nb_powers) { |
|
560 |
+ int n, nb_pow; |
|
561 |
+ |
|
562 |
+ /* get lower loudness to consider */ |
|
563 |
+ n = 0; |
|
564 |
+ nb_pow = LRA_LOWER_PRC * nb_powers / 100. + 0.5; |
|
565 |
+ for (i = gate_hist_pos; i < HIST_SIZE; i++) { |
|
566 |
+ n += ebur128->i3000.histogram[i].count; |
|
567 |
+ if (n >= nb_pow) { |
|
568 |
+ ebur128->lra_low = ebur128->i3000.histogram[i].loudness; |
|
569 |
+ break; |
|
570 |
+ } |
|
571 |
+ } |
|
572 |
+ |
|
573 |
+ /* get higher loudness to consider */ |
|
574 |
+ n = nb_powers; |
|
575 |
+ nb_pow = LRA_HIGHER_PRC * nb_powers / 100. + 0.5; |
|
576 |
+ for (i = HIST_SIZE - 1; i >= 0; i--) { |
|
577 |
+ n -= ebur128->i3000.histogram[i].count; |
|
578 |
+ if (n < nb_pow) { |
|
579 |
+ ebur128->lra_high = ebur128->i3000.histogram[i].loudness; |
|
580 |
+ break; |
|
581 |
+ } |
|
582 |
+ } |
|
583 |
+ |
|
584 |
+ // XXX: show low & high on the graph? |
|
585 |
+ ebur128->loudness_range = ebur128->lra_high - ebur128->lra_low; |
|
586 |
+ } |
|
587 |
+ } |
|
588 |
+ |
|
589 |
+#define LOG_FMT "M:%6.1f S:%6.1f I:%6.1f LUFS LRA:%6.1f LU" |
|
590 |
+ |
|
591 |
+ /* push one video frame */ |
|
592 |
+ if (ebur128->do_video) { |
|
593 |
+ int x, y, ret; |
|
594 |
+ uint8_t *p; |
|
595 |
+ |
|
596 |
+ const int y_loudness_lu_graph = lu_to_y(ebur128, loudness_3000 + 23); |
|
597 |
+ const int y_loudness_lu_gauge = lu_to_y(ebur128, loudness_400 + 23); |
|
598 |
+ |
|
599 |
+ /* draw the graph using the short-term loudness */ |
|
600 |
+ p = pic->data[0] + ebur128->graph.y*pic->linesize[0] + ebur128->graph.x*3; |
|
601 |
+ for (y = 0; y < ebur128->graph.h; y++) { |
|
602 |
+ const uint8_t *c = get_graph_color(ebur128, y_loudness_lu_graph, y); |
|
603 |
+ |
|
604 |
+ memmove(p, p + 3, (ebur128->graph.w - 1) * 3); |
|
605 |
+ memcpy(p + (ebur128->graph.w - 1) * 3, c, 3); |
|
606 |
+ p += pic->linesize[0]; |
|
607 |
+ } |
|
608 |
+ |
|
609 |
+ /* draw the gauge using the momentary loudness */ |
|
610 |
+ p = pic->data[0] + ebur128->gauge.y*pic->linesize[0] + ebur128->gauge.x*3; |
|
611 |
+ for (y = 0; y < ebur128->gauge.h; y++) { |
|
612 |
+ const uint8_t *c = get_graph_color(ebur128, y_loudness_lu_gauge, y); |
|
613 |
+ |
|
614 |
+ for (x = 0; x < ebur128->gauge.w; x++) |
|
615 |
+ memcpy(p + x*3, c, 3); |
|
616 |
+ p += pic->linesize[0]; |
|
617 |
+ } |
|
618 |
+ |
|
619 |
+ /* draw textual info */ |
|
620 |
+ drawtext(pic, PAD, PAD - PAD/2, FONT16, font_colors, |
|
621 |
+ LOG_FMT " ", // padding to erase trailing characters |
|
622 |
+ loudness_400, loudness_3000, |
|
623 |
+ ebur128->integrated_loudness, ebur128->loudness_range); |
|
624 |
+ |
|
625 |
+ /* set pts and push frame */ |
|
626 |
+ pic->pts = pts; |
|
627 |
+ if ((ret = ff_start_frame(outlink, avfilter_ref_buffer(pic, ~AV_PERM_WRITE)) < 0) < 0 || |
|
628 |
+ (ret = ff_draw_slice(outlink, 0, outlink->h, 1)) < 0 || |
|
629 |
+ (ret = ff_end_frame(outlink)) < 0) |
|
630 |
+ return ret; |
|
631 |
+ } |
|
632 |
+ |
|
633 |
+ av_log(ctx, ebur128->do_video ? AV_LOG_VERBOSE : AV_LOG_INFO, |
|
634 |
+ "t: %-10s " LOG_FMT "\n", av_ts2timestr(pts, &outlink->time_base), |
|
635 |
+ loudness_400, loudness_3000, |
|
636 |
+ ebur128->integrated_loudness, ebur128->loudness_range); |
|
637 |
+ } |
|
638 |
+ } |
|
639 |
+ |
|
640 |
+ return ff_filter_samples(ctx->outputs[ebur128->do_video], insamples); |
|
641 |
+} |
|
642 |
+ |
|
643 |
+static int query_formats(AVFilterContext *ctx) |
|
644 |
+{ |
|
645 |
+ EBUR128Context *ebur128 = ctx->priv; |
|
646 |
+ AVFilterFormats *formats; |
|
647 |
+ AVFilterChannelLayouts *layouts; |
|
648 |
+ AVFilterLink *inlink = ctx->inputs[0]; |
|
649 |
+ AVFilterLink *outlink = ctx->outputs[0]; |
|
650 |
+ |
|
651 |
+ static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_DBL, -1 }; |
|
652 |
+ static const int input_srate[] = {48000, -1}; // ITU-R BS.1770 provides coeff only for 48kHz |
|
653 |
+ static const enum PixelFormat pix_fmts[] = { PIX_FMT_RGB24, -1 }; |
|
654 |
+ |
|
655 |
+ /* set input audio formats */ |
|
656 |
+ formats = ff_make_format_list(sample_fmts); |
|
657 |
+ if (!formats) |
|
658 |
+ return AVERROR(ENOMEM); |
|
659 |
+ ff_formats_ref(formats, &inlink->out_formats); |
|
660 |
+ |
|
661 |
+ layouts = ff_all_channel_layouts(); |
|
662 |
+ if (!layouts) |
|
663 |
+ return AVERROR(ENOMEM); |
|
664 |
+ ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts); |
|
665 |
+ |
|
666 |
+ formats = ff_make_format_list(input_srate); |
|
667 |
+ if (!formats) |
|
668 |
+ return AVERROR(ENOMEM); |
|
669 |
+ ff_formats_ref(formats, &inlink->out_samplerates); |
|
670 |
+ |
|
671 |
+ /* set optional output video format */ |
|
672 |
+ if (ebur128->do_video) { |
|
673 |
+ formats = ff_make_format_list(pix_fmts); |
|
674 |
+ if (!formats) |
|
675 |
+ return AVERROR(ENOMEM); |
|
676 |
+ ff_formats_ref(formats, &outlink->in_formats); |
|
677 |
+ outlink = ctx->outputs[1]; |
|
678 |
+ } |
|
679 |
+ |
|
680 |
+ /* set audio output formats (same as input since it's just a passthrough) */ |
|
681 |
+ formats = ff_make_format_list(sample_fmts); |
|
682 |
+ if (!formats) |
|
683 |
+ return AVERROR(ENOMEM); |
|
684 |
+ ff_formats_ref(formats, &outlink->in_formats); |
|
685 |
+ |
|
686 |
+ layouts = ff_all_channel_layouts(); |
|
687 |
+ if (!layouts) |
|
688 |
+ return AVERROR(ENOMEM); |
|
689 |
+ ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts); |
|
690 |
+ |
|
691 |
+ formats = ff_make_format_list(input_srate); |
|
692 |
+ if (!formats) |
|
693 |
+ return AVERROR(ENOMEM); |
|
694 |
+ ff_formats_ref(formats, &outlink->in_samplerates); |
|
695 |
+ |
|
696 |
+ return 0; |
|
697 |
+} |
|
698 |
+ |
|
699 |
+static av_cold void uninit(AVFilterContext *ctx) |
|
700 |
+{ |
|
701 |
+ int i; |
|
702 |
+ EBUR128Context *ebur128 = ctx->priv; |
|
703 |
+ |
|
704 |
+ av_log(ctx, AV_LOG_INFO, "Summary:\n\n" |
|
705 |
+ " Integrated loudness:\n" |
|
706 |
+ " I: %5.1f LUFS\n" |
|
707 |
+ " Threshold: %5.1f LUFS\n\n" |
|
708 |
+ " Loudness range:\n" |
|
709 |
+ " LRA: %5.1f LU\n" |
|
710 |
+ " Threshold: %5.1f LUFS\n" |
|
711 |
+ " LRA low: %5.1f LUFS\n" |
|
712 |
+ " LRA high: %5.1f LUFS\n", |
|
713 |
+ ebur128->integrated_loudness, ebur128->i400.rel_threshold, |
|
714 |
+ ebur128->loudness_range, ebur128->i3000.rel_threshold, |
|
715 |
+ ebur128->lra_low, ebur128->lra_high); |
|
716 |
+ |
|
717 |
+ av_freep(&ebur128->y_line_ref); |
|
718 |
+ av_freep(&ebur128->ch_weighting); |
|
719 |
+ av_freep(&ebur128->i400.histogram); |
|
720 |
+ av_freep(&ebur128->i3000.histogram); |
|
721 |
+ for (i = 0; i < ebur128->nb_channels; i++) { |
|
722 |
+ av_freep(&ebur128->i400.cache[i]); |
|
723 |
+ av_freep(&ebur128->i3000.cache[i]); |
|
724 |
+ } |
|
725 |
+ for (i = 0; i < ctx->nb_outputs; i++) |
|
726 |
+ av_freep(&ctx->output_pads[i].name); |
|
727 |
+ avfilter_unref_bufferp(&ebur128->outpicref); |
|
728 |
+} |
|
729 |
+ |
|
730 |
+AVFilter avfilter_af_ebur128 = { |
|
731 |
+ .name = "ebur128", |
|
732 |
+ .description = NULL_IF_CONFIG_SMALL("EBU R128 scanner."), |
|
733 |
+ .priv_size = sizeof(EBUR128Context), |
|
734 |
+ .init = init, |
|
735 |
+ .uninit = uninit, |
|
736 |
+ .query_formats = query_formats, |
|
737 |
+ |
|
738 |
+ .inputs = (const AVFilterPad[]) { |
|
739 |
+ { .name = "default", |
|
740 |
+ .type = AVMEDIA_TYPE_AUDIO, |
|
741 |
+ .get_audio_buffer = ff_null_get_audio_buffer, |
|
742 |
+ .filter_samples = filter_samples, }, |
|
743 |
+ { .name = NULL } |
|
744 |
+ }, |
|
745 |
+ .outputs = NULL, |
|
746 |
+}; |
... | ... |
@@ -29,7 +29,7 @@ |
29 | 29 |
#include "libavutil/avutil.h" |
30 | 30 |
|
31 | 31 |
#define LIBAVFILTER_VERSION_MAJOR 3 |
32 |
-#define LIBAVFILTER_VERSION_MINOR 18 |
|
32 |
+#define LIBAVFILTER_VERSION_MINOR 19 |
|
33 | 33 |
#define LIBAVFILTER_VERSION_MICRO 100 |
34 | 34 |
|
35 | 35 |
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \ |