diff options
Diffstat (limited to 'drivers/media/test-drivers/vidtv/vidtv_s302m.c')
| -rw-r--r-- | drivers/media/test-drivers/vidtv/vidtv_s302m.c | 104 |
1 files changed, 95 insertions, 9 deletions
diff --git a/drivers/media/test-drivers/vidtv/vidtv_s302m.c b/drivers/media/test-drivers/vidtv/vidtv_s302m.c index 2a40ef15f715..25b70594283b 100644 --- a/drivers/media/test-drivers/vidtv/vidtv_s302m.c +++ b/drivers/media/test-drivers/vidtv/vidtv_s302m.c @@ -40,6 +40,9 @@ #define S302M_BLOCK_SZ 192 #define S302M_SIN_LUT_NUM_ELEM 1024 +/* Used by the tone generator: number of samples for PI */ +#define PI 180 + static const u8 reverse[256] = { /* from ffmpeg */ 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, @@ -66,10 +69,74 @@ static const u8 reverse[256] = { 0x3F, 0xBF, 0x7F, 0xFF, }; -/* Used by the tone generator */ -#define SAMPLE_RATE 48000 -#define PI 180 -#define NOTE_A4 440 +struct tone_duration { + enum musical_notes note; + int duration; +}; + +#define COMPASS 120 /* beats per minute (Allegro) */ +static const struct tone_duration beethoven_5th_symphony[] = { + { NOTE_E_6, 128}, { NOTE_DS_6, 128}, { NOTE_E_6, 128}, + { NOTE_DS_6, 128}, { NOTE_E_6, 128}, { NOTE_B_5, 128}, + { NOTE_D_6, 128}, { NOTE_C_6, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_C_5, 128}, + { NOTE_E_5, 128}, { NOTE_A_5, 128}, { NOTE_E_3, 128}, + { NOTE_E_4, 128}, { NOTE_GS_4, 128}, { NOTE_E_5, 128}, + { NOTE_GS_5, 128}, { NOTE_B_5, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_E_5, 128}, + { NOTE_E_6, 128}, { NOTE_DS_6, 128}, { NOTE_E_6, 128}, + { NOTE_DS_6, 128}, { NOTE_E_6, 128}, { NOTE_B_5, 128}, + { NOTE_D_6, 128}, { NOTE_C_6, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_C_5, 128}, + { NOTE_E_5, 128}, { NOTE_A_5, 128}, { NOTE_E_3, 128}, + { NOTE_E_4, 128}, { NOTE_GS_4, 128}, { NOTE_E_5, 128}, + { NOTE_C_6, 128}, { NOTE_B_5, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_SILENT, 128}, + + { NOTE_E_6, 128}, { NOTE_DS_6, 128}, { NOTE_E_6, 128}, + { NOTE_DS_6, 128}, { NOTE_E_6, 128}, { NOTE_B_5, 128}, + { NOTE_D_6, 128}, { NOTE_C_6, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_C_5, 128}, + { NOTE_E_5, 128}, { NOTE_A_5, 128}, { NOTE_E_3, 128}, + { NOTE_E_4, 128}, { NOTE_GS_4, 128}, { NOTE_E_5, 128}, + { NOTE_GS_5, 128}, { NOTE_B_5, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_E_5, 128}, + { NOTE_E_6, 128}, { NOTE_DS_6, 128}, { NOTE_E_6, 128}, + { NOTE_DS_6, 128}, { NOTE_E_6, 128}, { NOTE_B_5, 128}, + { NOTE_D_6, 128}, { NOTE_C_6, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_C_5, 128}, + { NOTE_E_5, 128}, { NOTE_A_5, 128}, { NOTE_E_3, 128}, + { NOTE_E_4, 128}, { NOTE_GS_4, 128}, { NOTE_E_5, 128}, + { NOTE_C_6, 128}, { NOTE_B_5, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_B_4, 128}, + { NOTE_C_5, 128}, { NOTE_D_5, 128}, { NOTE_C_4, 128}, + { NOTE_G_4, 128}, { NOTE_C_5, 128}, { NOTE_G_4, 128}, + { NOTE_F_5, 128}, { NOTE_E_5, 128}, { NOTE_G_3, 128}, + { NOTE_G_4, 128}, { NOTE_B_3, 128}, { NOTE_F_4, 128}, + { NOTE_E_5, 128}, { NOTE_D_5, 128}, { NOTE_A_3, 128}, + { NOTE_E_4, 128}, { NOTE_A_4, 128}, { NOTE_E_4, 128}, + { NOTE_D_5, 128}, { NOTE_C_5, 128}, { NOTE_E_3, 128}, + { NOTE_E_4, 128}, { NOTE_E_5, 255}, { NOTE_E_6, 128}, + { NOTE_E_5, 128}, { NOTE_E_6, 128}, { NOTE_E_5, 255}, + { NOTE_DS_5, 128}, { NOTE_E_5, 128}, { NOTE_DS_6, 128}, + { NOTE_E_6, 128}, { NOTE_DS_5, 128}, { NOTE_E_5, 128}, + { NOTE_DS_6, 128}, { NOTE_E_6, 128}, { NOTE_DS_6, 128}, + { NOTE_E_6, 128}, { NOTE_DS_6, 128}, { NOTE_E_6, 128}, + { NOTE_B_5, 128}, { NOTE_D_6, 128}, { NOTE_C_6, 128}, + { NOTE_A_3, 128}, { NOTE_E_4, 128}, { NOTE_A_4, 128}, + { NOTE_C_5, 128}, { NOTE_E_5, 128}, { NOTE_A_5, 128}, + { NOTE_E_3, 128}, { NOTE_E_4, 128}, { NOTE_GS_4, 128}, + { NOTE_E_5, 128}, { NOTE_GS_5, 128}, { NOTE_B_5, 128}, + { NOTE_A_3, 128}, { NOTE_E_4, 128}, { NOTE_A_4, 128}, + { NOTE_E_5, 128}, { NOTE_E_6, 128}, { NOTE_DS_6, 128}, + { NOTE_E_6, 128}, { NOTE_DS_6, 128}, { NOTE_E_6, 128}, + { NOTE_B_5, 128}, { NOTE_D_6, 128}, { NOTE_C_6, 128}, + { NOTE_A_3, 128}, { NOTE_E_4, 128}, { NOTE_A_4, 128}, + { NOTE_C_5, 128}, { NOTE_E_5, 128}, { NOTE_A_5, 128}, + { NOTE_E_3, 128}, { NOTE_E_4, 128}, { NOTE_GS_4, 128}, + { NOTE_E_5, 128}, { NOTE_C_6, 128}, { NOTE_B_5, 128}, + { NOTE_C_5, 255}, { NOTE_C_5, 255}, { NOTE_SILENT, 512}, +}; static struct vidtv_access_unit *vidtv_s302m_access_unit_init(struct vidtv_access_unit *head) { @@ -187,15 +254,33 @@ static u16 vidtv_s302m_get_sample(struct vidtv_encoder *e) if (!e->src_buf) { /* - * Simple tone generator. For now, just generates a 440 Hz - * sinusoidal wave. + * Simple tone generator: play the tones at the + * beethoven_5th_symphony array. */ - pos = (2 * PI * e->src_buf_offset * NOTE_A4 / SAMPLE_RATE); + if (e->last_duration <= 0) { + if (e->src_buf_offset >= ARRAY_SIZE(beethoven_5th_symphony)) + e->src_buf_offset = 0; - if (pos == 360) + e->last_tone = beethoven_5th_symphony[e->src_buf_offset].note; + e->last_duration = beethoven_5th_symphony[e->src_buf_offset].duration * S302M_SAMPLING_RATE_HZ / COMPASS / 5; + e->src_buf_offset++; + e->note_offset = 0; + } else { + e->last_duration--; + } + + /* Handle silent */ + if (!e->last_tone) { e->src_buf_offset = 0; + return 0x8000; + } + + pos = (2 * PI * e->note_offset * e->last_tone / S302M_SAMPLING_RATE_HZ); + + if (pos == 360) + e->note_offset = 0; else - e->src_buf_offset++; + e->note_offset++; return (fixp_sin32(pos % (2 * PI)) >> 16) + 0x8000; } @@ -388,6 +473,7 @@ struct vidtv_encoder e->encoder_buf_offset = 0; e->sample_count = 0; + e->last_duration = 0; e->src_buf = (args.src_buf) ? args.src_buf : NULL; e->src_buf_sz = (args.src_buf) ? args.src_buf_sz : 0; |