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613 lines
20 KiB
613 lines
20 KiB
/*****************************************************************************
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* audiobargraph_v.c : audiobargraph video plugin for vlc
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*****************************************************************************
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* Copyright (C) 2003-2006 VLC authors and VideoLAN
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*
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* Authors: Clement CHESNIN <clement.chesnin@gmail.com>
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* Philippe COENT <philippe.coent@tdf.fr>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <string.h>
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#include <math.h>
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_filter.h>
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#include <vlc_subpicture.h>
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#include <vlc_image.h>
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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#define POSX_TEXT N_("X coordinate")
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#define POSX_LONGTEXT N_("X coordinate of the bargraph.")
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#define POSY_TEXT N_("Y coordinate")
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#define POSY_LONGTEXT N_("Y coordinate of the bargraph.")
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#define TRANS_TEXT N_("Transparency of the bargraph")
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#define TRANS_LONGTEXT N_("Bargraph transparency value " \
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"(from 0 for full transparency to 255 for full opacity).")
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#define POS_TEXT N_("Bargraph position")
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#define POS_LONGTEXT N_(\
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"Enforce the bargraph position on the video " \
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"(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
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"also use combinations of these values, eg 6 = top-right).")
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#define BARWIDTH_TEXT N_("Bar width in pixel")
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#define BARWIDTH_LONGTEXT N_("Width in pixel of each bar in the BarGraph to be displayed." )
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#define BARHEIGHT_TEXT N_("Bar Height in pixel")
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#define BARHEIGHT_LONGTEXT N_("Height in pixel of BarGraph to be displayed." )
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#define CFG_PREFIX "audiobargraph_v-"
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static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
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static const char *const ppsz_pos_descriptions[] =
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{ N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
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N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
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static int OpenSub (vlc_object_t *);
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static int OpenVideo(vlc_object_t *);
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static void Close (vlc_object_t *);
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vlc_module_begin ()
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set_category(CAT_VIDEO)
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set_subcategory(SUBCAT_VIDEO_SUBPIC)
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set_capability("sub source", 0)
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set_callbacks(OpenSub, Close)
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set_description(N_("Audio Bar Graph Video sub source"))
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set_shortname(N_("Audio Bar Graph Video"))
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add_shortcut("audiobargraph_v")
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add_obsolete_string(CFG_PREFIX "i_values")
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add_integer(CFG_PREFIX "x", 0, POSX_TEXT, POSX_LONGTEXT, true)
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add_integer(CFG_PREFIX "y", 0, POSY_TEXT, POSY_LONGTEXT, true)
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add_integer_with_range(CFG_PREFIX "transparency", 255, 0, 255,
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TRANS_TEXT, TRANS_LONGTEXT, false)
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add_integer(CFG_PREFIX "position", -1, POS_TEXT, POS_LONGTEXT, false)
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change_integer_list(pi_pos_values, ppsz_pos_descriptions)
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add_obsolete_integer(CFG_PREFIX "alarm")
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add_integer(CFG_PREFIX "barWidth", 10, BARWIDTH_TEXT, BARWIDTH_LONGTEXT, true)
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add_integer(CFG_PREFIX "barHeight", 400, BARHEIGHT_TEXT, BARHEIGHT_LONGTEXT, true)
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/* video output filter submodule */
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add_submodule ()
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set_capability("video filter", 0)
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set_callbacks(OpenVideo, Close)
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set_description(N_("Audio Bar Graph Video sub source"))
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add_shortcut("audiobargraph_v")
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vlc_module_end ()
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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/*****************************************************************************
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* Structure to hold the Bar Graph properties
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****************************************************************************/
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typedef struct
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{
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int i_alpha; /* -1 means use default alpha */
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int nbChannels;
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int *i_values;
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picture_t *p_pic;
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vlc_tick_t date;
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int scale;
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bool alarm;
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int barWidth;
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} BarGraph_t;
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/**
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* Private data holder
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*/
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typedef struct
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{
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filter_t *p_blend;
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vlc_mutex_t lock;
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BarGraph_t p_BarGraph;
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int i_pos;
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int i_pos_x;
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int i_pos_y;
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bool b_absolute;
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/* On the fly control variable */
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bool b_spu_update;
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} filter_sys_t;
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static const char *const ppsz_filter_options[] = {
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"x", "y", "transparency", "position", "barWidth", "barHeight", NULL
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};
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static const char *const ppsz_filter_callbacks[] = {
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"audiobargraph_v-x",
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"audiobargraph_v-y",
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"audiobargraph_v-transparency",
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"audiobargraph_v-position",
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"audiobargraph_v-barWidth",
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"audiobargraph_v-barHeight",
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NULL
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};
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/*****************************************************************************
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* IEC 268-18 Source: meterbridge
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*****************************************************************************/
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static float iec_scale(float dB)
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{
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if (dB < -70.0f)
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return 0.0f;
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if (dB < -60.0f)
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return (dB + 70.0f) * 0.0025f;
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if (dB < -50.0f)
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return (dB + 60.0f) * 0.005f + 0.025f;
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if (dB < -40.0f)
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return (dB + 50.0f) * 0.0075f + 0.075f;
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if (dB < -30.0f)
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return (dB + 40.0f) * 0.015f + 0.15f;
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if (dB < -20.0f)
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return (dB + 30.0f) * 0.02f + 0.3f;
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if (dB < -0.001f || dB > 0.001f) /* if (dB < 0.0f) */
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return (dB + 20.0f) * 0.025f + 0.5f;
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return 1.0f;
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}
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/*****************************************************************************
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* parse_i_values : parse i_values parameter and store the corresponding values
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*****************************************************************************/
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static void parse_i_values(BarGraph_t *p_BarGraph, char *i_values)
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{
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char delim[] = ":";
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char* tok;
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p_BarGraph->nbChannels = 0;
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free(p_BarGraph->i_values);
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p_BarGraph->i_values = NULL;
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char *res = strtok_r(i_values, delim, &tok);
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while (res != NULL) {
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p_BarGraph->nbChannels++;
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p_BarGraph->i_values = xrealloc(p_BarGraph->i_values,
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p_BarGraph->nbChannels*sizeof(int));
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float db = log10(atof(res)) * 20;
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p_BarGraph->i_values[p_BarGraph->nbChannels-1] = VLC_CLIP(iec_scale(db)*p_BarGraph->scale, 0, p_BarGraph->scale);
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res = strtok_r(NULL, delim, &tok);
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}
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}
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/* Drawing */
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static const uint8_t bright_red[4] = { 76, 85, 0xff, 0xff };
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static const uint8_t black[4] = { 0x00, 0x80, 0x80, 0xff };
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static const uint8_t white[4] = { 0xff, 0x80, 0x80, 0xff };
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static const uint8_t bright_green[4] = { 150, 44, 21, 0xff };
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static const uint8_t bright_yellow[4] = { 226, 1, 148, 0xff };
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static const uint8_t green[4] = { 74, 85, 74, 0xff };
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static const uint8_t yellow[4] = { 112, 64, 138, 0xff };
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static const uint8_t red[4] = { 37, 106, 191, 0xff };
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static inline void DrawHLine(plane_t *p, int line, int col, const uint8_t color[4], int w)
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{
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for (int j = 0; j < 4; j++)
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memset(&p[j].p_pixels[line * p[j].i_pitch + col], color[j], w);
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}
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static void Draw2VLines(plane_t *p, int scale, int col, const uint8_t color[4])
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{
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for (int i = 10; i < scale + 10; i++)
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DrawHLine(p, i, col, color, 2);
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}
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static void DrawHLines(plane_t *p, int line, int col, const uint8_t color[4], int h, int w)
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{
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for (int i = line; i < line + h; i++)
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DrawHLine(p, i, col, color, w);
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}
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static void DrawNumber(plane_t *p, int h, const uint8_t data[5], int l)
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{
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for (int i = 0; i < 5; i++) {
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uint8_t x = data[i];
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for (int j = 0; j < 7; j++) {
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x <<= 1;
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if (x & 0x80)
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DrawHLine(p, h - l + 2 - 1 - i, 12 + j, black, 1);
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}
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}
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}
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/*****************************************************************************
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* Draw: creates and returns the bar graph image
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*****************************************************************************/
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static void Draw(BarGraph_t *b)
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{
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int nbChannels = b->nbChannels;
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int scale = b->scale;
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int barWidth = b->barWidth;
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int w = 40;
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if (nbChannels > 0)
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w = 2 * nbChannels * barWidth + 30;
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int h = scale + 30;
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int level[6];
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for (int i = 0; i < 6; i++)
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level[i] = iec_scale(-(i+1) * 10) * scale + 20;
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if (b->p_pic)
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picture_Release(b->p_pic);
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b->p_pic = picture_New(VLC_FOURCC('Y','U','V','A'), w, h, 1, 1);
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if (!b->p_pic)
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return;
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picture_t *p_pic = b->p_pic;
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plane_t *p = p_pic->p;
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for (int i = 0 ; i < p_pic->i_planes ; i++)
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memset(p[i].p_pixels, 0x00, p[i].i_visible_lines * p[i].i_pitch);
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Draw2VLines(p, scale, 20, black);
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Draw2VLines(p, scale, 22, white);
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static const uint8_t pixmap[6][5] = {
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{ 0x17, 0x15, 0x15, 0x15, 0x17 },
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{ 0x77, 0x45, 0x75, 0x15, 0x77 },
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{ 0x77, 0x15, 0x75, 0x15, 0x77 },
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{ 0x17, 0x15, 0x75, 0x55, 0x57 },
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{ 0x77, 0x15, 0x75, 0x45, 0x77 },
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{ 0x77, 0x55, 0x75, 0x45, 0x77 },
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};
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for (int i = 0; i < 6; i++) {
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DrawHLines(p, h - 1 - level[i] - 1, 24, white, 1, 3);
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DrawHLines(p, h - 1 - level[i], 24, black, 2, 3);
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DrawNumber(p, h, pixmap[i], level[i]);
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}
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int minus8 = iec_scale(- 8) * scale + 20;
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int minus18 = iec_scale(-18) * scale + 20;
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int *i_values = b->i_values;
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const uint8_t *indicator_color = b->alarm ? bright_red : black;
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for (int i = 0; i < nbChannels; i++) {
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int pi = 30 + i * (5 + barWidth);
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DrawHLines(p, h - 20 - 1, pi, indicator_color, 8, barWidth);
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for (int line = 20; line < i_values[i] + 20; line++) {
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if (line < minus18)
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DrawHLines(p, h - line - 1, pi, bright_green, 1, barWidth);
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else if (line < minus8)
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DrawHLines(p, h - line - 1, pi, bright_yellow, 1, barWidth);
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else
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DrawHLines(p, h - line - 1, pi, bright_red, 1, barWidth);
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}
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for (int line = i_values[i] + 20; line < scale + 20; line++) {
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if (line < minus18)
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DrawHLines(p, h - line - 1, pi, green, 1, barWidth);
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else if (line < minus8)
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DrawHLines(p, h - line - 1, pi, yellow, 1, barWidth);
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else
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DrawHLines(p, h - line - 1, pi, red, 1, barWidth);
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}
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}
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}
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/*****************************************************************************
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* Callback to update params on the fly
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*****************************************************************************/
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static int BarGraphCallback(vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t newval, void *p_data)
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{
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VLC_UNUSED(p_this); VLC_UNUSED(oldval);
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filter_sys_t *p_sys = p_data;
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BarGraph_t *p_BarGraph = &p_sys->p_BarGraph;
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vlc_mutex_lock(&p_sys->lock);
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if (!strcmp(psz_var, CFG_PREFIX "x"))
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p_sys->i_pos_x = newval.i_int;
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else if (!strcmp(psz_var, CFG_PREFIX "y"))
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p_sys->i_pos_y = newval.i_int;
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else if (!strcmp(psz_var, CFG_PREFIX "position"))
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p_sys->i_pos = newval.i_int;
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else if (!strcmp(psz_var, CFG_PREFIX "transparency"))
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p_BarGraph->i_alpha = VLC_CLIP(newval.i_int, 0, 255);
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else if (!strcmp(psz_var, CFG_PREFIX "i_values")) {
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if (newval.psz_string)
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parse_i_values(p_BarGraph, newval.psz_string);
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Draw(p_BarGraph);
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} else if (!strcmp(psz_var, CFG_PREFIX "alarm")) {
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p_BarGraph->alarm = newval.b_bool;
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Draw(p_BarGraph);
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} else if (!strcmp(psz_var, CFG_PREFIX "barWidth")) {
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p_BarGraph->barWidth = newval.i_int;
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Draw(p_BarGraph);
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} else if (!strcmp(psz_var, CFG_PREFIX "barHeight")) {
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p_BarGraph->scale = newval.i_int;
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Draw(p_BarGraph);
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}
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p_sys->b_spu_update = true;
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vlc_mutex_unlock(&p_sys->lock);
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return VLC_SUCCESS;
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}
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/**
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* Sub source
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*/
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static subpicture_t *FilterSub(filter_t *p_filter, vlc_tick_t date)
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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BarGraph_t *p_BarGraph = &(p_sys->p_BarGraph);
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subpicture_t *p_spu;
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subpicture_region_t *p_region;
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video_format_t fmt;
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picture_t *p_pic;
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vlc_mutex_lock(&p_sys->lock);
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/* Basic test: b_spu_update occurs on a dynamic change */
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if (!p_sys->b_spu_update) {
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vlc_mutex_unlock(&p_sys->lock);
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return NULL;
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}
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p_pic = p_BarGraph->p_pic;
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/* Allocate the subpicture internal data. */
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p_spu = filter_NewSubpicture(p_filter);
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if (!p_spu)
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goto exit;
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p_spu->b_absolute = p_sys->b_absolute;
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p_spu->i_start = date;
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p_spu->i_stop = 0;
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p_spu->b_ephemer = true;
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/* Send an empty subpicture to clear the display when needed */
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if (!p_pic || !p_BarGraph->i_alpha)
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goto exit;
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/* Create new SPU region */
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video_format_Init(&fmt, VLC_CODEC_YUVA);
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fmt.i_sar_num = fmt.i_sar_den = 1;
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fmt.i_width = fmt.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
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fmt.i_height = fmt.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
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fmt.i_x_offset = fmt.i_y_offset = 0;
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p_region = subpicture_region_New(&fmt);
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if (!p_region) {
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msg_Err(p_filter, "cannot allocate SPU region");
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subpicture_Delete(p_spu);
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p_spu = NULL;
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goto exit;
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}
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/* */
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picture_Copy(p_region->p_picture, p_pic);
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/* where to locate the bar graph: */
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if (p_sys->i_pos < 0) { /* set to an absolute xy */
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p_region->i_align = SUBPICTURE_ALIGN_RIGHT | SUBPICTURE_ALIGN_TOP;
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p_spu->b_absolute = true;
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} else { /* set to one of the 9 relative locations */
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p_region->i_align = p_sys->i_pos;
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p_spu->b_absolute = false;
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}
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p_region->i_x = p_sys->i_pos_x;
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p_region->i_y = p_sys->i_pos_y;
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p_spu->p_region = p_region;
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p_spu->i_alpha = p_BarGraph->i_alpha ;
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exit:
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vlc_mutex_unlock(&p_sys->lock);
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return p_spu;
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}
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/**
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* Video filter
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*/
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static picture_t *FilterVideo(filter_t *p_filter, picture_t *p_src)
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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BarGraph_t *p_BarGraph = &(p_sys->p_BarGraph);
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picture_t *p_dst = filter_NewPicture(p_filter);
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if (!p_dst) {
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picture_Release(p_src);
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return NULL;
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}
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picture_Copy(p_dst, p_src);
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/* */
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vlc_mutex_lock(&p_sys->lock);
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/* */
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const picture_t *p_pic = p_BarGraph->p_pic;
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if (!p_pic)
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goto out;
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const video_format_t *p_fmt = &p_pic->format;
|
|
const int i_dst_w = p_filter->fmt_out.video.i_visible_width;
|
|
const int i_dst_h = p_filter->fmt_out.video.i_visible_height;
|
|
|
|
if (p_sys->i_pos) {
|
|
if (p_sys->i_pos & SUBPICTURE_ALIGN_BOTTOM)
|
|
p_sys->i_pos_y = i_dst_h - p_fmt->i_visible_height;
|
|
else if (!(p_sys->i_pos & SUBPICTURE_ALIGN_TOP))
|
|
p_sys->i_pos_y = (i_dst_h - p_fmt->i_visible_height) / 2;
|
|
else
|
|
p_sys->i_pos_y = 0;
|
|
|
|
if (p_sys->i_pos & SUBPICTURE_ALIGN_RIGHT)
|
|
p_sys->i_pos_x = i_dst_w - p_fmt->i_visible_width;
|
|
else if (!(p_sys->i_pos & SUBPICTURE_ALIGN_LEFT))
|
|
p_sys->i_pos_x = (i_dst_w - p_fmt->i_visible_width) / 2;
|
|
else
|
|
p_sys->i_pos_x = 0;
|
|
}
|
|
|
|
/* */
|
|
const int i_alpha = p_BarGraph->i_alpha;
|
|
if (filter_ConfigureBlend(p_sys->p_blend, i_dst_w, i_dst_h, p_fmt) ||
|
|
filter_Blend(p_sys->p_blend, p_dst, p_sys->i_pos_x, p_sys->i_pos_y,
|
|
p_pic, i_alpha))
|
|
msg_Err(p_filter, "failed to blend a picture");
|
|
|
|
out:
|
|
vlc_mutex_unlock(&p_sys->lock);
|
|
|
|
picture_Release(p_src);
|
|
return p_dst;
|
|
}
|
|
|
|
/**
|
|
* Common open function
|
|
*/
|
|
static int OpenCommon(vlc_object_t *p_this, bool b_sub)
|
|
{
|
|
filter_t *p_filter = (filter_t *)p_this;
|
|
filter_sys_t *p_sys;
|
|
|
|
/* */
|
|
if (!b_sub && !es_format_IsSimilar(&p_filter->fmt_in, &p_filter->fmt_out)) {
|
|
msg_Err(p_filter, "Input and output format does not match");
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
|
|
/* */
|
|
p_filter->p_sys = p_sys = malloc(sizeof(*p_sys));
|
|
if (!p_sys)
|
|
return VLC_ENOMEM;
|
|
|
|
/* */
|
|
p_sys->p_blend = NULL;
|
|
if (!b_sub) {
|
|
p_sys->p_blend = filter_NewBlend(VLC_OBJECT(p_filter),
|
|
&p_filter->fmt_in.video);
|
|
if (!p_sys->p_blend) {
|
|
free(p_sys);
|
|
return VLC_EGENERIC;
|
|
}
|
|
}
|
|
|
|
/* */
|
|
config_ChainParse(p_filter, CFG_PREFIX, ppsz_filter_options,
|
|
p_filter->p_cfg);
|
|
|
|
/* create and initialize variables */
|
|
p_sys->i_pos = var_CreateGetInteger(p_filter, CFG_PREFIX "position");
|
|
p_sys->i_pos_x = var_CreateGetInteger(p_filter, CFG_PREFIX "x");
|
|
p_sys->i_pos_y = var_CreateGetInteger(p_filter, CFG_PREFIX "y");
|
|
BarGraph_t *p_BarGraph = &p_sys->p_BarGraph;
|
|
p_BarGraph->p_pic = NULL;
|
|
p_BarGraph->i_alpha = var_CreateGetInteger(p_filter, CFG_PREFIX "transparency");
|
|
p_BarGraph->i_alpha = VLC_CLIP(p_BarGraph->i_alpha, 0, 255);
|
|
p_BarGraph->i_values = NULL;
|
|
parse_i_values(p_BarGraph, &(char){ 0 });
|
|
p_BarGraph->alarm = false;
|
|
|
|
p_BarGraph->barWidth = var_CreateGetInteger(p_filter, CFG_PREFIX "barWidth");
|
|
p_BarGraph->scale = var_CreateGetInteger( p_filter, CFG_PREFIX "barHeight");
|
|
|
|
/* Ignore aligment if a position is given for video filter */
|
|
if (!b_sub && p_sys->i_pos_x >= 0 && p_sys->i_pos_y >= 0)
|
|
p_sys->i_pos = 0;
|
|
|
|
vlc_object_t *vlc = VLC_OBJECT(vlc_object_instance(p_filter));
|
|
|
|
vlc_mutex_init(&p_sys->lock);
|
|
var_Create(vlc, CFG_PREFIX "alarm", VLC_VAR_BOOL);
|
|
var_Create(vlc, CFG_PREFIX "i_values", VLC_VAR_STRING);
|
|
|
|
var_AddCallback(vlc, CFG_PREFIX "alarm", BarGraphCallback, p_sys);
|
|
var_AddCallback(vlc, CFG_PREFIX "i_values", BarGraphCallback, p_sys);
|
|
|
|
var_TriggerCallback(vlc, CFG_PREFIX "alarm");
|
|
var_TriggerCallback(vlc, CFG_PREFIX "i_values");
|
|
|
|
for (int i = 0; ppsz_filter_callbacks[i]; i++)
|
|
var_AddCallback(p_filter, ppsz_filter_callbacks[i],
|
|
BarGraphCallback, p_sys);
|
|
|
|
if (b_sub)
|
|
p_filter->pf_sub_source = FilterSub;
|
|
else
|
|
p_filter->pf_video_filter = FilterVideo;
|
|
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* Open the sub source
|
|
*/
|
|
static int OpenSub(vlc_object_t *p_this)
|
|
{
|
|
return OpenCommon(p_this, true);
|
|
}
|
|
|
|
/**
|
|
* Open the video filter
|
|
*/
|
|
static int OpenVideo(vlc_object_t *p_this)
|
|
{
|
|
return OpenCommon(p_this, false);
|
|
}
|
|
|
|
/**
|
|
* Common close function
|
|
*/
|
|
static void Close(vlc_object_t *p_this)
|
|
{
|
|
filter_t *p_filter = (filter_t *)p_this;
|
|
filter_sys_t *p_sys = p_filter->p_sys;
|
|
vlc_object_t *vlc = VLC_OBJECT(vlc_object_instance(p_filter));
|
|
|
|
for (int i = 0; ppsz_filter_callbacks[i]; i++)
|
|
var_DelCallback(p_filter, ppsz_filter_callbacks[i],
|
|
BarGraphCallback, p_sys);
|
|
|
|
var_DelCallback(vlc, CFG_PREFIX "i_values", BarGraphCallback, p_sys);
|
|
var_DelCallback(vlc, CFG_PREFIX "alarm", BarGraphCallback, p_sys);
|
|
var_Destroy(vlc, CFG_PREFIX "i_values");
|
|
var_Destroy(vlc, CFG_PREFIX "alarm");
|
|
|
|
if (p_sys->p_blend)
|
|
filter_DeleteBlend(p_sys->p_blend);
|
|
|
|
vlc_mutex_destroy(&p_sys->lock);
|
|
|
|
if (p_sys->p_BarGraph.p_pic)
|
|
picture_Release(p_sys->p_BarGraph.p_pic);
|
|
|
|
free(p_sys->p_BarGraph.i_values);
|
|
|
|
free(p_sys);
|
|
}
|
|
|