mirror of
https://github.com/alsa-project/alsa-lib.git
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a7f744888e
Add a test to check that snd_midi_event_decode() checks its output buffer size. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
371 lines
9.9 KiB
C
371 lines
9.9 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <regex.h>
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#include "test.h"
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/*
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* Checks whether the regular expression matches the entire MIDI data, printed
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* as hex.
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*/
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static int midi_matches_regex(unsigned char *midi, int count, const char *regex)
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{
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char *text;
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regex_t re;
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regmatch_t match;
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int i;
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text = malloc(2 * count + 1);
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if (!text)
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return 0;
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for (i = 0; i < count; ++i)
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sprintf(text + 2 * i, "%02x", midi[i]);
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if (regcomp(&re, regex, REG_EXTENDED) != 0) {
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free(text);
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return 0;
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}
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i = regexec(&re, text, 1, &match, 0);
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i = i == 0 && match.rm_so == 0 && match.rm_eo == strlen(text);
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regfree(&re);
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free(text);
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return i;
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}
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static void test_decode(void)
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{
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snd_midi_event_t *midi_event;
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snd_seq_event_t ev;
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unsigned char buf[50];
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int count;
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if (ALSA_CHECK(snd_midi_event_new(256 /* ? */, &midi_event)) < 0)
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return;
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#define DECODE() snd_midi_event_decode(midi_event, buf, sizeof(buf), &ev)
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#define BUF_MATCHES(str) midi_matches_regex(buf, count, str)
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#define DECODES_TO(str) ((count = DECODE()), BUF_MATCHES(str))
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snd_seq_ev_clear(&ev);
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snd_seq_ev_set_fixed(&ev);
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ev.type = SND_SEQ_EVENT_NONE;
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TEST_CHECK(DECODE() == -ENOENT);
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snd_seq_ev_set_noteoff(&ev, 1, 2, 3);
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TEST_CHECK(DECODES_TO("810203"));
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snd_seq_ev_set_noteon(&ev, 4, 5, 6);
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TEST_CHECK(DECODES_TO("940506"));
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snd_seq_ev_set_keypress(&ev, 7, 8, 9);
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TEST_CHECK(DECODES_TO("a70809"));
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snd_seq_ev_set_controller(&ev, 10, 11, 12);
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TEST_CHECK(DECODES_TO("ba0b0c"));
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snd_seq_ev_set_pgmchange(&ev, 13, 14);
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TEST_CHECK(DECODES_TO("cd0e"));
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snd_seq_ev_set_chanpress(&ev, 15, 16);
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TEST_CHECK(DECODES_TO("df10"));
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snd_seq_ev_set_pitchbend(&ev, 1, 0x222);
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TEST_CHECK(DECODES_TO("e12244"));
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snd_seq_ev_set_sysex(&ev, 6, "\xf0\x7e\x7f\x06\x01\xf7");
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TEST_CHECK(DECODES_TO("f07e7f0601f7"));
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snd_seq_ev_set_fixed(&ev);
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ev.type = SND_SEQ_EVENT_QFRAME;
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ev.data.control.value = 3;
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TEST_CHECK(DECODES_TO("f103"));
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ev.type = SND_SEQ_EVENT_SONGPOS;
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ev.data.control.value = 0x444;
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TEST_CHECK(DECODES_TO("f24408"));
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ev.type = SND_SEQ_EVENT_SONGSEL;
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ev.data.control.value = 5;
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TEST_CHECK(DECODES_TO("f305"));
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ev.type = SND_SEQ_EVENT_TUNE_REQUEST;
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TEST_CHECK(DECODES_TO("f6"));
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ev.type = SND_SEQ_EVENT_CLOCK;
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TEST_CHECK(DECODES_TO("f8"));
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ev.type = SND_SEQ_EVENT_START;
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TEST_CHECK(DECODES_TO("fa"));
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ev.type = SND_SEQ_EVENT_CONTINUE;
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TEST_CHECK(DECODES_TO("fb"));
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ev.type = SND_SEQ_EVENT_STOP;
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TEST_CHECK(DECODES_TO("fc"));
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ev.type = SND_SEQ_EVENT_SENSING;
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TEST_CHECK(DECODES_TO("fe"));
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ev.type = SND_SEQ_EVENT_RESET;
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TEST_CHECK(DECODES_TO("ff"));
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ev.type = SND_SEQ_EVENT_CONTROL14;
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ev.data.control.channel = 6;
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ev.data.control.param = 7;
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ev.data.control.value = 0x888;
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/*
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* This regular expression catches all allowed combinations of LSB/MSB
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* order and running status.
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*/
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TEST_CHECK(DECODES_TO("b6(0711(b6)?2708|2708(b6)?0711)"));
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ev.type = SND_SEQ_EVENT_NONREGPARAM;
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ev.data.control.channel = 9;
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ev.data.control.param = 0xaaa;
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ev.data.control.value = 0xbbb;
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TEST_CHECK(DECODES_TO("b9(622a(b9)?6315|6315(b9)?622a)(b9)?(0617(b9)?263b|263b(b9)?0617)"));
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ev.type = SND_SEQ_EVENT_REGPARAM;
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ev.data.control.channel = 12;
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ev.data.control.param = 0xddd;
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ev.data.control.value = 0xeee;
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TEST_CHECK(DECODES_TO("bc(645d(bc)?651b|651b(bc)?645d)(bc)?(061d(bc)?266e|266e(bc)?061d)"));
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/* no running status after SysEx */
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snd_seq_ev_set_pgmchange(&ev, 0, 0x11);
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TEST_CHECK(DECODES_TO("c011"));
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snd_seq_ev_set_sysex(&ev, 6, "\xf0\x7e\x7f\x09\x02\xf7");
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TEST_CHECK(DECODES_TO("f07e7f0902f7"));
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snd_seq_ev_set_pgmchange(&ev, 0, 0x11);
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TEST_CHECK(DECODES_TO("c011"));
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/* no running status for non-realtime common messages */
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ev.type = SND_SEQ_EVENT_QFRAME;
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ev.data.control.value = 0x11;
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TEST_CHECK(DECODES_TO("f111"));
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TEST_CHECK(DECODES_TO("f111"));
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/* buffer overflow */
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TEST_CHECK(snd_midi_event_decode(midi_event, buf, 1, &ev) == -ENOMEM);
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snd_midi_event_free(midi_event);
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}
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static void test_reset_decode(void)
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{
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snd_midi_event_t *midi_event;
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snd_seq_event_t ev;
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unsigned char buf[50];
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int count;
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if (ALSA_CHECK(snd_midi_event_new(256 /* ? */, &midi_event)) < 0)
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return;
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snd_seq_ev_clear(&ev);
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snd_seq_ev_set_noteon(&ev, 1, 2, 3);
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TEST_CHECK(DECODES_TO("910203"));
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snd_midi_event_reset_decode(midi_event);
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TEST_CHECK(DECODES_TO("910203"));
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snd_midi_event_free(midi_event);
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}
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static void test_encode(void)
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{
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snd_midi_event_t *midi_event;
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snd_seq_event_t ev;
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if (ALSA_CHECK(snd_midi_event_new(256, &midi_event)) < 0)
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return;
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#define ENCODE(str) snd_midi_event_encode(midi_event, \
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(const unsigned char *)str, \
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sizeof(str) - 1, &ev)
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TEST_CHECK(ENCODE("\x81\x02\x03") == 3);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NOTEOFF);
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TEST_CHECK((ev.flags & SND_SEQ_EVENT_LENGTH_MASK) == SND_SEQ_EVENT_LENGTH_FIXED);
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TEST_CHECK(ev.data.note.channel == 1);
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TEST_CHECK(ev.data.note.note == 2);
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TEST_CHECK(ev.data.note.velocity == 3);
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TEST_CHECK(ENCODE("\x94\x05\x06") == 3);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NOTEON);
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TEST_CHECK(ev.data.note.channel == 4);
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TEST_CHECK(ev.data.note.note == 5);
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TEST_CHECK(ev.data.note.velocity == 6);
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TEST_CHECK(ENCODE("\xa7\x08\x09") == 3);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_KEYPRESS);
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TEST_CHECK(ev.data.note.channel == 7);
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TEST_CHECK(ev.data.note.note == 8);
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TEST_CHECK(ev.data.note.velocity == 9);
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TEST_CHECK(ENCODE("\xba\x0b\x0c") == 3);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_CONTROLLER);
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TEST_CHECK(ev.data.control.channel == 10);
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TEST_CHECK(ev.data.control.param == 11);
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TEST_CHECK(ev.data.control.value == 12);
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TEST_CHECK(ENCODE("\xcd\x0e") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_PGMCHANGE);
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TEST_CHECK(ev.data.control.channel == 13);
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TEST_CHECK(ev.data.control.value == 14);
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TEST_CHECK(ENCODE("\xdf\x10") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_CHANPRESS);
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TEST_CHECK(ev.data.control.channel == 15);
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TEST_CHECK(ev.data.control.value == 16);
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TEST_CHECK(ENCODE("\xe1\x22\x33") == 3);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_PITCHBEND);
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TEST_CHECK(ev.data.control.channel == 1);
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TEST_CHECK(ev.data.control.value == -1630);
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TEST_CHECK(ENCODE("\xf0\x7f\x7f\x04\x01\x7f\x7f\xf7") == 8);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_SYSEX);
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TEST_CHECK((ev.flags & SND_SEQ_EVENT_LENGTH_MASK) == SND_SEQ_EVENT_LENGTH_VARIABLE);
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TEST_CHECK(ev.data.ext.len == 8);
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TEST_CHECK(!memcmp(ev.data.ext.ptr, "\xf0\x7f\x7f\x04\x01\x7f\x7f\xf7", 8));
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TEST_CHECK(ENCODE("\xf1\x04") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_QFRAME);
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TEST_CHECK(ev.data.control.value == 4);
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TEST_CHECK(ENCODE("\xf2\x55\x66") == 3);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_SONGPOS);
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TEST_CHECK(ev.data.control.value == 13141);
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TEST_CHECK(ENCODE("\xf3\x07") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_SONGSEL);
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TEST_CHECK(ev.data.control.value == 7);
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TEST_CHECK(ENCODE("\xf6") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_TUNE_REQUEST);
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TEST_CHECK(ENCODE("\xf8") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_CLOCK);
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TEST_CHECK(ENCODE("\xfa") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_START);
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TEST_CHECK(ENCODE("\xfb") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_CONTINUE);
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TEST_CHECK(ENCODE("\xfc") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_STOP);
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TEST_CHECK(ENCODE("\xfe") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_SENSING);
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TEST_CHECK(ENCODE("\xff") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_RESET);
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TEST_CHECK(ENCODE("\xc1\xf8") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_CLOCK);
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TEST_CHECK(ENCODE("\x22") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_PGMCHANGE);
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TEST_CHECK(ev.data.control.channel == 1);
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TEST_CHECK(ev.data.control.value == 0x22);
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TEST_CHECK(ENCODE("\xf8") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_CLOCK);
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TEST_CHECK(ENCODE("\x33") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_PGMCHANGE);
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TEST_CHECK(ev.data.control.channel == 1);
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TEST_CHECK(ev.data.control.value == 0x33);
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TEST_CHECK(ENCODE("\xc1\xf6") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_TUNE_REQUEST);
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TEST_CHECK(ENCODE("\x44\x44") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NONE);
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snd_midi_event_free(midi_event);
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}
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static void test_reset_encode(void)
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{
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snd_midi_event_t *midi_event;
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snd_seq_event_t ev;
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if (ALSA_CHECK(snd_midi_event_new(256, &midi_event)) < 0)
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return;
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TEST_CHECK(ENCODE("\x91\x02") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NONE);
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snd_midi_event_reset_encode(midi_event);
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TEST_CHECK(ENCODE("\x03") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NONE);
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snd_midi_event_free(midi_event);
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}
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static void test_init(void)
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{
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snd_midi_event_t *midi_event;
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snd_seq_event_t ev;
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unsigned char buf[50];
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int count;
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if (ALSA_CHECK(snd_midi_event_new(256, &midi_event)) < 0)
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return;
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snd_seq_ev_set_noteon(&ev, 1, 2, 3);
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TEST_CHECK(DECODES_TO("910203"));
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TEST_CHECK(ENCODE("\x94\x05") == 2);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NONE);
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snd_midi_event_init(midi_event);
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snd_seq_ev_set_noteon(&ev, 1, 2, 3);
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TEST_CHECK(DECODES_TO("910203"));
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TEST_CHECK(ENCODE("\x06") == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NONE);
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snd_midi_event_free(midi_event);
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}
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static void test_encode_byte(void)
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{
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snd_midi_event_t *midi_event;
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snd_seq_event_t ev;
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if (ALSA_CHECK(snd_midi_event_new(256, &midi_event)) < 0)
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return;
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#define ENCODE_BYTE(c) snd_midi_event_encode_byte(midi_event, c, &ev)
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TEST_CHECK(ENCODE_BYTE(0x81) == 0);
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TEST_CHECK(ENCODE_BYTE(0x02) == 0);
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TEST_CHECK(ENCODE_BYTE(0x03) == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NOTEOFF);
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TEST_CHECK((ev.flags & SND_SEQ_EVENT_LENGTH_MASK) == SND_SEQ_EVENT_LENGTH_FIXED);
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TEST_CHECK(ev.data.note.channel == 1);
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TEST_CHECK(ev.data.note.note == 2);
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TEST_CHECK(ev.data.note.velocity == 3);
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TEST_CHECK(ENCODE_BYTE(0x04) == 0);
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TEST_CHECK(ENCODE_BYTE(0xf8) == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_CLOCK);
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TEST_CHECK(ENCODE_BYTE(0x05) == 1);
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TEST_CHECK(ev.type == SND_SEQ_EVENT_NOTEOFF);
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TEST_CHECK(ev.data.note.channel == 1);
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TEST_CHECK(ev.data.note.note == 4);
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TEST_CHECK(ev.data.note.velocity == 5);
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snd_midi_event_free(midi_event);
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}
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int main(void)
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{
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test_decode();
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test_reset_decode();
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test_encode();
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test_reset_encode();
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test_encode_byte();
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test_init();
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return TEST_EXIT_CODE();
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}
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