From: Samuel Thibault Date: Sat, 4 Mar 2017 14:01:55 +0000 (+0100) Subject: speakup: extend synth buffer to 16bit unicode characters X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=89fc2ae80bb1eeca1d967723c1918c0b156508a0;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git speakup: extend synth buffer to 16bit unicode characters This extends the synth buffer slots to 16bit, so as to hold 16bit unicode characters. synth_buffer_getc and synth_buffer_peek now return 16bit characters. Speech synthesizers which do not support characters beyond latin1 can use the synth_buffer_skip_nonlatin1() helper to skip the non-latin1 characters before getting or peeking. All synthesizers are made to use it for now. This makes synth_buffer_add take a 16bit character. For simplicity for now, synth_printf is left to using latin1 formats and strings. synth_putwc, synth_putwc_s, synth_putws and synth_putws_s helpers are however added to put 16bit characters and strings. Signed-off-by: Samuel Thibault Reviewed-by: Chris Brannon Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/speakup/buffers.c b/drivers/staging/speakup/buffers.c index 723d5df44221..f459e4004bfa 100644 --- a/drivers/staging/speakup/buffers.c +++ b/drivers/staging/speakup/buffers.c @@ -7,10 +7,10 @@ #define SYNTH_BUF_SIZE 8192 /* currently 8K bytes */ -static u_char synth_buffer[SYNTH_BUF_SIZE]; /* guess what this is for! */ -static u_char *buff_in = synth_buffer; -static u_char *buff_out = synth_buffer; -static u_char *buffer_end = synth_buffer + SYNTH_BUF_SIZE - 1; +static u16 synth_buffer[SYNTH_BUF_SIZE]; /* guess what this is for! */ +static u16 *buff_in = synth_buffer; +static u16 *buff_out = synth_buffer; +static u16 *buffer_end = synth_buffer + SYNTH_BUF_SIZE - 1; /* These try to throttle applications by stopping the TTYs * Note: we need to make sure that we will restart them eventually, which is @@ -44,13 +44,13 @@ static void speakup_stop_ttys(void) static int synth_buffer_free(void) { - int bytes_free; + int chars_free; if (buff_in >= buff_out) - bytes_free = SYNTH_BUF_SIZE - (buff_in - buff_out); + chars_free = SYNTH_BUF_SIZE - (buff_in - buff_out); else - bytes_free = buff_out - buff_in; - return bytes_free; + chars_free = buff_out - buff_in; + return chars_free; } int synth_buffer_empty(void) @@ -59,7 +59,7 @@ int synth_buffer_empty(void) } EXPORT_SYMBOL_GPL(synth_buffer_empty); -void synth_buffer_add(char ch) +void synth_buffer_add(u16 ch) { if (!synth->alive) { /* This makes sure that we won't stop TTYs if there is no synth @@ -78,9 +78,9 @@ void synth_buffer_add(char ch) buff_in = synth_buffer; } -char synth_buffer_getc(void) +u16 synth_buffer_getc(void) { - char ch; + u16 ch; if (buff_out == buff_in) return 0; @@ -91,7 +91,7 @@ char synth_buffer_getc(void) } EXPORT_SYMBOL_GPL(synth_buffer_getc); -char synth_buffer_peek(void) +u16 synth_buffer_peek(void) { if (buff_out == buff_in) return 0; @@ -99,6 +99,18 @@ char synth_buffer_peek(void) } EXPORT_SYMBOL_GPL(synth_buffer_peek); +void synth_buffer_skip_nonlatin1(void) +{ + while (buff_out != buff_in) { + if (*buff_out < 0x100) + return; + buff_out++; + if (buff_out > buffer_end) + buff_out = synth_buffer; + } +} +EXPORT_SYMBOL_GPL(synth_buffer_skip_nonlatin1); + void synth_buffer_clear(void) { buff_in = synth_buffer; diff --git a/drivers/staging/speakup/speakup.h b/drivers/staging/speakup/speakup.h index b203f0f883a9..272dd3dd920b 100644 --- a/drivers/staging/speakup/speakup.h +++ b/drivers/staging/speakup/speakup.h @@ -66,7 +66,7 @@ void synth_release(void); void spk_do_flush(void); void speakup_start_ttys(void); -void synth_buffer_add(char ch); +void synth_buffer_add(u16 ch); void synth_buffer_clear(void); void speakup_clear_selection(void); int speakup_set_selection(struct tty_struct *tty); diff --git a/drivers/staging/speakup/speakup_acntpc.c b/drivers/staging/speakup/speakup_acntpc.c index cf6fcd63498d..56ece087ff88 100644 --- a/drivers/staging/speakup/speakup_acntpc.c +++ b/drivers/staging/speakup/speakup_acntpc.c @@ -196,6 +196,7 @@ static void do_catch_up(struct spk_synth *synth) synth->flush(synth); continue; } + synth_buffer_skip_nonlatin1(); if (synth_buffer_empty()) { spin_unlock_irqrestore(&speakup_info.spinlock, flags); break; diff --git a/drivers/staging/speakup/speakup_apollo.c b/drivers/staging/speakup/speakup_apollo.c index 3f43f8105bc0..93969688e754 100644 --- a/drivers/staging/speakup/speakup_apollo.c +++ b/drivers/staging/speakup/speakup_apollo.c @@ -160,6 +160,7 @@ static void do_catch_up(struct spk_synth *synth) synth->flush(synth); continue; } + synth_buffer_skip_nonlatin1(); if (synth_buffer_empty()) { spin_unlock_irqrestore(&speakup_info.spinlock, flags); break; diff --git a/drivers/staging/speakup/speakup_decext.c b/drivers/staging/speakup/speakup_decext.c index 6b74a97385da..34e03c6b1ae5 100644 --- a/drivers/staging/speakup/speakup_decext.c +++ b/drivers/staging/speakup/speakup_decext.c @@ -175,6 +175,7 @@ static void do_catch_up(struct spk_synth *synth) synth->flush(synth); continue; } + synth_buffer_skip_nonlatin1(); if (synth_buffer_empty()) { spin_unlock_irqrestore(&speakup_info.spinlock, flags); break; diff --git a/drivers/staging/speakup/speakup_decpc.c b/drivers/staging/speakup/speakup_decpc.c index 3b57347b7c3f..4cd9730ee03d 100644 --- a/drivers/staging/speakup/speakup_decpc.c +++ b/drivers/staging/speakup/speakup_decpc.c @@ -390,6 +390,7 @@ static void do_catch_up(struct spk_synth *synth) synth->flush(synth); continue; } + synth_buffer_skip_nonlatin1(); if (synth_buffer_empty()) { spin_unlock_irqrestore(&speakup_info.spinlock, flags); break; diff --git a/drivers/staging/speakup/speakup_dectlk.c b/drivers/staging/speakup/speakup_dectlk.c index 26036050cdb2..e0f2d6121890 100644 --- a/drivers/staging/speakup/speakup_dectlk.c +++ b/drivers/staging/speakup/speakup_dectlk.c @@ -239,6 +239,7 @@ static void do_catch_up(struct spk_synth *synth) synth->flush(synth); continue; } + synth_buffer_skip_nonlatin1(); if (synth_buffer_empty()) { spin_unlock_irqrestore(&speakup_info.spinlock, flags); break; diff --git a/drivers/staging/speakup/speakup_dtlk.c b/drivers/staging/speakup/speakup_dtlk.c index e2bf20806d8d..de67288beb25 100644 --- a/drivers/staging/speakup/speakup_dtlk.c +++ b/drivers/staging/speakup/speakup_dtlk.c @@ -209,6 +209,7 @@ static void do_catch_up(struct spk_synth *synth) synth->flush(synth); continue; } + synth_buffer_skip_nonlatin1(); if (synth_buffer_empty()) { spin_unlock_irqrestore(&speakup_info.spinlock, flags); break; diff --git a/drivers/staging/speakup/speakup_keypc.c b/drivers/staging/speakup/speakup_keypc.c index 10f4964782e2..7c24e088549c 100644 --- a/drivers/staging/speakup/speakup_keypc.c +++ b/drivers/staging/speakup/speakup_keypc.c @@ -198,6 +198,7 @@ spin_lock_irqsave(&speakup_info.spinlock, flags); synth->flush(synth); continue; } + synth_buffer_skip_nonlatin1(); if (synth_buffer_empty()) { spin_unlock_irqrestore(&speakup_info.spinlock, flags); break; diff --git a/drivers/staging/speakup/speakup_soft.c b/drivers/staging/speakup/speakup_soft.c index d2ff0afd685a..2529c4629c53 100644 --- a/drivers/staging/speakup/speakup_soft.c +++ b/drivers/staging/speakup/speakup_soft.c @@ -213,6 +213,7 @@ static ssize_t softsynth_read(struct file *fp, char __user *buf, size_t count, spin_lock_irqsave(&speakup_info.spinlock, flags); while (1) { prepare_to_wait(&speakup_event, &wait, TASK_INTERRUPTIBLE); + synth_buffer_skip_nonlatin1(); if (!synth_buffer_empty() || speakup_info.flushing) break; spin_unlock_irqrestore(&speakup_info.spinlock, flags); diff --git a/drivers/staging/speakup/spk_priv.h b/drivers/staging/speakup/spk_priv.h index c78c2b6a2fc9..b8015d817cdd 100644 --- a/drivers/staging/speakup/spk_priv.h +++ b/drivers/staging/speakup/spk_priv.h @@ -48,8 +48,9 @@ unsigned char spk_serial_in_nowait(void); int spk_serial_out(const char ch); void spk_serial_release(void); -char synth_buffer_getc(void); -char synth_buffer_peek(void); +void synth_buffer_skip_nonlatin1(void); +u16 synth_buffer_getc(void); +u16 synth_buffer_peek(void); int synth_buffer_empty(void); struct var_t *spk_get_var(enum var_id_t var_id); ssize_t spk_var_show(struct kobject *kobj, struct kobj_attribute *attr, @@ -65,6 +66,10 @@ int spk_synth_is_alive_nop(struct spk_synth *synth); int spk_synth_is_alive_restart(struct spk_synth *synth); __printf(1, 2) void synth_printf(const char *buf, ...); +void synth_putwc(u16 wc); +void synth_putwc_s(u16 wc); +void synth_putws(const u16 *buf); +void synth_putws_s(const u16 *buf); int synth_request_region(unsigned long start, unsigned long n); int synth_release_region(unsigned long start, unsigned long n); int synth_add(struct spk_synth *in_synth); diff --git a/drivers/staging/speakup/synth.c b/drivers/staging/speakup/synth.c index 8340748ae9cb..4d59917a2961 100644 --- a/drivers/staging/speakup/synth.c +++ b/drivers/staging/speakup/synth.c @@ -109,6 +109,7 @@ void spk_do_catch_up(struct spk_synth *synth) synth->flush(synth); continue; } + synth_buffer_skip_nonlatin1(); if (synth_buffer_empty()) { spin_unlock_irqrestore(&speakup_info.spinlock, flags); break; @@ -255,6 +256,35 @@ void synth_printf(const char *fmt, ...) } EXPORT_SYMBOL_GPL(synth_printf); +void synth_putwc(u16 wc) +{ + synth_buffer_add(wc); +} +EXPORT_SYMBOL_GPL(synth_putwc); + +void synth_putwc_s(u16 wc) +{ + synth_buffer_add(wc); + synth_start(); +} +EXPORT_SYMBOL_GPL(synth_putwc_s); + +void synth_putws(const u16 *buf) +{ + const u16 *p; + + for (p = buf; *p; p++) + synth_buffer_add(*p); +} +EXPORT_SYMBOL_GPL(synth_putws); + +void synth_putws_s(const u16 *buf) +{ + synth_putws(buf); + synth_start(); +} +EXPORT_SYMBOL_GPL(synth_putws_s); + static int index_count; static int sentence_count;