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-rw-r--r--libtoolame-dab/bitstream.c79
-rw-r--r--libtoolame-dab/common.h7
-rw-r--r--libtoolame-dab/toolame.c35
-rw-r--r--libtoolame-dab/toolame.h17
4 files changed, 65 insertions, 73 deletions
diff --git a/libtoolame-dab/bitstream.c b/libtoolame-dab/bitstream.c
index 410ef5b..d426ffc 100644
--- a/libtoolame-dab/bitstream.c
+++ b/libtoolame-dab/bitstream.c
@@ -42,89 +42,35 @@
/* in conformity of the norme ETS 300 401 http://www.etsi.org */
/* see toollame.c */
int minimum = MINIMUM;
-int refill_buffer (Bit_stream_struc * bs)
-{
- register int i = bs->buf_size - 2 - bs->buf_byte_idx;
- register unsigned long n = 1;
- register int index = 0;
- char val[2];
-
- while ((i >= 0) && (!bs->eob)) {
-
- if (bs->format == BINARY)
- n = fread (&bs->buf[i--], sizeof (unsigned char), 1, bs->pt);
-
- else {
- while ((index < 2) && n) {
- n = fread (&val[index], sizeof (char), 1, bs->pt);
- switch (val[index]) {
- case 0x30:
- case 0x31:
- case 0x32:
- case 0x33:
- case 0x34:
- case 0x35:
- case 0x36:
- case 0x37:
- case 0x38:
- case 0x39:
- case 0x41:
- case 0x42:
- case 0x43:
- case 0x44:
- case 0x45:
- case 0x46:
- index++;
- break;
- default:
- break;
- }
- }
-
- if (val[0] <= 0x39)
- bs->buf[i] = (val[0] - 0x30) << 4;
- else
- bs->buf[i] = (val[0] - 0x37) << 4;
- if (val[1] <= 0x39)
- bs->buf[i--] |= (val[1] - 0x30);
- else
- bs->buf[i--] |= (val[1] - 0x37);
- index = 0;
- }
-
- if (!n) {
- bs->eob = i + 1;
- }
-
- }
- return 0;
-}
/* empty the buffer to the output device when the buffer becomes full */
void empty_buffer (Bit_stream_struc * bs, int minimum)
{
- int i;
-
- if (bs->pt) {
- for (i = bs->buf_size - 1; i >= minimum; i--)
- fwrite (&bs->buf[i], sizeof (unsigned char), 1, bs->pt);
+ int j = 0;
+ for (int i = bs->buf_size - 1; i >= minimum; i--) {
+ if (j >= bs->output_buffer_size) {
+ fprintf(stderr, "Warning: libtoolame output buffer too small (%d vs %d)!\n",
+ bs->output_buffer_size, bs->buf_size - minimum);
+ break;
+ }
- fflush (bs->pt); /* NEW SS to assist in debugging */
+ bs->output_buffer[j] = bs->buf[i];
+ j++;
}
+ bs->output_buffer_written = j;
- for (i = minimum - 1; i >= 0; i--)
+ for (int i = minimum - 1; i >= 0; i--) {
bs->buf[bs->buf_size - minimum + i] = bs->buf[i];
+ }
bs->buf_byte_idx = bs->buf_size - 1 - minimum;
bs->buf_bit_idx = 8;
-
}
/* open the device to write the bit stream into it */
void open_bit_stream_w (Bit_stream_struc * bs, int size)
{
- bs->pt = NULL; // we're not using file output
alloc_buffer (bs, size);
bs->buf_byte_idx = size - 1;
bs->buf_bit_idx = 8;
@@ -139,7 +85,6 @@ void close_bit_stream_w (Bit_stream_struc * bs)
{
putbits (bs, 0, 7);
empty_buffer (bs, bs->buf_byte_idx + 1);
- if (bs->pt) fclose(bs->pt);
desalloc_buffer (bs);
}
diff --git a/libtoolame-dab/common.h b/libtoolame-dab/common.h
index 8551483..0a19af6 100644
--- a/libtoolame-dab/common.h
+++ b/libtoolame-dab/common.h
@@ -142,9 +142,10 @@ frame_info;
typedef struct bit_stream_struc
{
- FILE *pt; /* pointer to bit stream device */
- void *zmq_sock; /* zmq socket */
- int zmq_framesize; /* zmq frame size */
+ unsigned char *output_buffer; /* output buffer */
+ int output_buffer_size;
+ int output_buffer_written;
+
unsigned char *buf; /* bit stream buffer */
int buf_size; /* size of buffer (in number of bytes) */
long totbit; /* bit counter of bit stream */
diff --git a/libtoolame-dab/toolame.c b/libtoolame-dab/toolame.c
index a626552..bea186c 100644
--- a/libtoolame-dab/toolame.c
+++ b/libtoolame-dab/toolame.c
@@ -154,6 +154,19 @@ int toolame_init(void)
return 0;
}
+int toolame_finish(
+ unsigned char *output_buffer,
+ size_t output_buffer_size)
+{
+ bs.output_buffer = output_buffer;
+ bs.output_buffer_size = output_buffer_size;
+ bs.output_buffer_written = 0;
+
+ close_bit_stream_w(&bs);
+
+ return bs.output_buffer_written;
+}
+
int toolame_enable_downmix_stereo(void)
{
glopts.downmix = TRUE;
@@ -233,6 +246,17 @@ int toolame_set_bitrate(int brate)
return err;
}
+int toolame_set_samplerate(long sample_rate)
+{
+ int s_freq = SmpFrqIndex(sample_rate, &header.version);
+ if (s_freq < 0) {
+ return s_freq;
+ }
+
+ header.sampling_frequency = s_freq;
+ return 0;
+}
+
int toolame_set_pad(int pad_len)
{
header.dab_length = pad_len;
@@ -247,13 +271,20 @@ int toolame_set_pad(int pad_len)
int toolame_encode_frame(
short buffer[2][1152],
unsigned char *xpad_data,
- unsigned char *output_buffer)
+ unsigned char *output_buffer,
+ size_t output_buffer_size)
{
extern int minimum;
const int nch = frame.nch;
const int error_protection = header.error_protection;
+ bs.output_buffer = output_buffer;
+ bs.output_buffer_size = output_buffer_size;
+ bs.output_buffer_written = 0;
+
+#ifdef REFERENCECODE
short *win_buf[2] = {&buffer[0][0], &buffer[1][0]};
+#endif
int adb = available_bits (&header, &glopts);
int lg_frame = adb / 8;
@@ -503,6 +534,8 @@ int toolame_encode_frame(
else {
putbits (&bs, 0, 16); // FPAD is all-zero
}
+
+ return bs.output_buffer_written;
}
void smr_dump(double smr[2][SBLIMIT], int nch) {
diff --git a/libtoolame-dab/toolame.h b/libtoolame-dab/toolame.h
index d7f8198..1c29e24 100644
--- a/libtoolame-dab/toolame.h
+++ b/libtoolame-dab/toolame.h
@@ -7,6 +7,13 @@
/* Initialise toolame encoding library. */
int toolame_init(void);
+/* Finish encoding the pending samples.
+ * Returns number of bytes written to output_buffer
+ */
+int toolame_finish(
+ unsigned char *output_buffer,
+ size_t output_buffer_size);
+
int toolame_enable_downmix_stereo(void);
int toolame_enable_byteswap(void);
@@ -20,13 +27,19 @@ int toolame_set_psy_model(int new_model);
int toolame_set_bitrate(int brate);
+/* Set sample rate in Hz */
+int toolame_set_samplerate(long sample_rate);
+
/* Enable PAD insertion from the specified file with length */
int toolame_set_pad(int pad_len);
+/* Encodes one frame. Returns number of bytes written to output_buffer
+ */
int toolame_encode_frame(
short buffer[2][1152],
- unsigned char* xpad_data,
- unsigned char *output_buffer);
+ unsigned char *xpad_data,
+ unsigned char *output_buffer,
+ size_t output_buffer_size);
#endif // __TOOLAME_H_
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 04:39:21 +0000