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-rw-r--r--src/audio_dec/xine_lpcm_decoder.c128
1 files changed, 104 insertions, 24 deletions
diff --git a/src/audio_dec/xine_lpcm_decoder.c b/src/audio_dec/xine_lpcm_decoder.c
index f5e2aeb6d..ca7802b07 100644
--- a/src/audio_dec/xine_lpcm_decoder.c
+++ b/src/audio_dec/xine_lpcm_decoder.c
@@ -67,22 +67,34 @@ typedef struct lpcm_decoder_s {
uint32_t ao_cap_mode;
int output_open;
- int cpu_be; /**< TRUE, if we're a Big endian CPU */
+ int cpu_be; /* TRUE, if we're a Big endian CPU */
+
+ int64_t pts;
+
+ uint8_t *buf;
+ size_t buffered_bytes;
+ size_t buf_size;
+
} lpcm_decoder_t;
static void lpcm_reset (audio_decoder_t *this_gen) {
- /* lpcm_decoder_t *this = (lpcm_decoder_t *) this_gen; */
+ lpcm_decoder_t *this = (lpcm_decoder_t *) this_gen;
+ free (this->buf);
+ this->buf = NULL;
}
static void lpcm_discontinuity (audio_decoder_t *this_gen) {
+
+ lpcm_reset(this_gen);
}
static void lpcm_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
lpcm_decoder_t *this = (lpcm_decoder_t *) this_gen;
int16_t *sample_buffer=(int16_t *)buf->content;
+ int buf_size = buf->size;
int stream_be;
audio_buffer_t *audio_buffer;
int format_changed = 0;
@@ -98,17 +110,54 @@ static void lpcm_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
unsigned int sample_rate = 0;
unsigned int num_channels;
- num_channels = (buf->decoder_info[2] & 0x7) + 1;
- switch ((buf->decoder_info[2]>>4) & 3) {
- case 0: sample_rate = 48000; break;
- case 1: sample_rate = 96000; break;
- case 2: sample_rate = 44100; break;
- case 3: sample_rate = 32000; break;
- }
- switch ((buf->decoder_info[2]>>6) & 3) {
- case 0: bits_per_sample = 16; break;
- case 1: bits_per_sample = 20; break;
- case 2: bits_per_sample = 24; break;
+ lprintf("lpcm_decoder: config data 0x%x\n", buf->decoder_info[2]);
+
+ /* BluRay PCM header is 4 bytes */
+ if (buf->decoder_info[2] & 0xffffff00) {
+ static const uint8_t channels[16] = {0, 1, 0, 2, 3, 3, 4, 4, 5, 6, 7, 8, 0, 0, 0, 0};
+
+ num_channels = channels[(buf->decoder_info[2] >> (16+4)) & 0x0f];
+ switch ((buf->decoder_info[2] >> (24+6)) & 0x03) {
+ case 1: bits_per_sample = 16; break;
+ case 2: bits_per_sample = 20; break;
+ case 3: bits_per_sample = 24; break;
+ default: bits_per_sample = 0; break;
+ }
+ switch ((buf->decoder_info[2] >> 16) & 0x0f) {
+ case 1: sample_rate = 48000; break;
+ case 4: sample_rate = 96000; break;
+ case 5: sample_rate = 192000; break;
+ default: sample_rate = 0; break;
+ }
+
+ if (!num_channels || !sample_rate || !bits_per_sample)
+ xine_log (this->stream->xine, XINE_LOG_MSG,
+ "lpcm_decoder: unsupported BluRay PCM format: 0x%08x\n", buf->decoder_info[2]);
+
+ if (this->buffered_bytes)
+ xine_log (this->stream->xine, XINE_LOG_MSG, "lpcm_decoder: %zd bytes lost !\n", this->buffered_bytes);
+
+ if (!this->buf) {
+ this->buffered_bytes = 0;
+ this->buf_size = 8128;
+ this->buf = malloc(this->buf_size);
+ }
+
+ } else {
+
+ /* MPEG2/DVD PCM header is one byte */
+ num_channels = (buf->decoder_info[2] & 0x7) + 1;
+ switch ((buf->decoder_info[2]>>4) & 3) {
+ case 0: sample_rate = 48000; break;
+ case 1: sample_rate = 96000; break;
+ case 2: sample_rate = 44100; break;
+ case 3: sample_rate = 32000; break;
+ }
+ switch ((buf->decoder_info[2]>>6) & 3) {
+ case 0: bits_per_sample = 16; break;
+ case 1: bits_per_sample = 20; break;
+ case 2: bits_per_sample = 24; break;
+ }
}
if( this->bits_per_sample != bits_per_sample ||
@@ -119,13 +168,17 @@ static void lpcm_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
this->number_of_channels = num_channels;
this->rate = sample_rate;
format_changed++;
+
+ xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG,
+ "lpcm_decoder: format changed to %d channels, %d bits per sample, %d Hz, %d kbit/s\n",
+ num_channels, bits_per_sample, sample_rate, (num_channels * sample_rate * bits_per_sample)/1024);
}
}
if( buf->decoder_flags & BUF_FLAG_STDHEADER ) {
this->rate=buf->decoder_info[1];
- this->bits_per_sample=buf->decoder_info[2] ;
- this->number_of_channels=buf->decoder_info[3] ;
+ this->bits_per_sample=buf->decoder_info[2];
+ this->number_of_channels=buf->decoder_info[3];
format_changed++;
}
@@ -159,6 +212,30 @@ static void lpcm_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
if (!this->output_open || (buf->decoder_flags & BUF_FLAG_HEADER) )
return;
+ if (buf->pts && !this->pts)
+ this->pts = buf->pts;
+
+ /* data accumulation */
+ if (this->buf) {
+ int frame_end = buf->decoder_flags & BUF_FLAG_FRAME_END;
+ if (this->buffered_bytes || !frame_end) {
+ if (this->buf_size < this->buffered_bytes + buf->size) {
+ this->buf_size *= 2;
+ this->buf = realloc(this->buf, this->buf_size);
+ }
+
+ memcpy(this->buf + this->buffered_bytes, buf->content, buf->size);
+ this->buffered_bytes += buf->size;
+
+ if (!frame_end)
+ return;
+
+ sample_buffer = (int16_t*)this->buf;
+ buf_size = this->buffered_bytes;
+ this->buffered_bytes = 0;
+ }
+ }
+
audio_buffer = this->stream->audio_out->get_buffer (this->stream->audio_out);
/* Swap LPCM samples into native byte order, if necessary */
@@ -167,14 +244,14 @@ static void lpcm_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
if( this->bits_per_sample == 16 ){
if (stream_be != this->cpu_be)
- swab (sample_buffer, audio_buffer->mem, buf->size);
+ swab (sample_buffer, audio_buffer->mem, buf_size);
else
- memcpy (audio_buffer->mem, sample_buffer, buf->size);
+ memcpy (audio_buffer->mem, sample_buffer, buf_size);
}
else if( this->bits_per_sample == 20 ) {
uint8_t *s = (uint8_t *)sample_buffer;
uint8_t *d = (uint8_t *)audio_buffer->mem;
- int n = buf->size;
+ int n = buf_size;
if (stream_be != this->cpu_be) {
while( n >= 0 ) {
@@ -194,7 +271,7 @@ static void lpcm_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
} else if( this->bits_per_sample == 24 ) {
uint8_t *s = (uint8_t *)sample_buffer;
uint8_t *d = (uint8_t *)audio_buffer->mem;
- int n = buf->size;
+ int n = buf_size;
while (n >= 3) {
if ( stream_be ) {
@@ -221,18 +298,19 @@ static void lpcm_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
n -= 3;
}
- if ( (d - (uint8_t*)audio_buffer->mem)/2*3 < buf->size )
- xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, "lpcm_decoder: lost %i bytes\n", (int)(buf->size - (d - (uint8_t*)audio_buffer->mem))/2*3);
+ if ( (d - (uint8_t*)audio_buffer->mem)/2*3 < buf_size )
+ xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, "lpcm_decoder: lost %i bytes\n", (int)(buf_size - (d - (uint8_t*)audio_buffer->mem))/2*3);
} else {
- memcpy (audio_buffer->mem, sample_buffer, buf->size);
+ memcpy (audio_buffer->mem, sample_buffer, buf_size);
}
- audio_buffer->vpts = buf->pts;
- audio_buffer->num_frames = (((buf->size*8)/this->number_of_channels)/this->bits_per_sample);
+ audio_buffer->vpts = this->pts;
+ audio_buffer->num_frames = (((buf_size*8)/this->number_of_channels)/this->bits_per_sample);
this->stream->audio_out->put_buffer (this->stream->audio_out, audio_buffer, this->stream);
+ this->pts = 0;
}
static void lpcm_dispose (audio_decoder_t *this_gen) {
@@ -242,6 +320,8 @@ static void lpcm_dispose (audio_decoder_t *this_gen) {
this->stream->audio_out->close (this->stream->audio_out, this->stream);
this->output_open = 0;
+ free (this->buf);
+
free (this_gen);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-26 14:13:00 +0000