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Diffstat (limited to 'src/demuxers/demux_mpc.c')
-rw-r--r--src/demuxers/demux_mpc.c82
1 files changed, 41 insertions, 41 deletions
diff --git a/src/demuxers/demux_mpc.c b/src/demuxers/demux_mpc.c
index 220e1b8b6..04b25eeb5 100644
--- a/src/demuxers/demux_mpc.c
+++ b/src/demuxers/demux_mpc.c
@@ -24,7 +24,7 @@
* APE tag reading
* Seeking??
*/
-
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@@ -66,7 +66,7 @@ typedef struct {
unsigned int frames;
double samplerate;
unsigned int length;
-
+
unsigned int current_frame;
unsigned int next_frame_bits;
} demux_mpc_t;
@@ -82,7 +82,7 @@ typedef struct {
static int open_mpc_file(demux_mpc_t *this) {
unsigned int first_frame_size;
unsigned int id3v2_size = 0;
-
+
/* Read the file header */
if (_x_demux_read_header(this->input, this->header, HEADER_SIZE) != HEADER_SIZE)
return 0;
@@ -91,39 +91,39 @@ static int open_mpc_file(demux_mpc_t *this) {
if (INPUT_IS_SEEKABLE(this->input)) {
/* Check for id3v2 tag */
if (id3v2_istag(this->header)) {
-
+
lprintf("found id3v2 header\n");
-
+
/* Read tag size */
-
+
id3v2_size = _X_BE_32_synchsafe(&this->header[6]) + 10;
-
+
/* Add footer size if one is present */
if (this->header[5] & 0x10)
id3v2_size += 10;
-
+
lprintf("id3v2 size: %u\n", id3v2_size);
-
+
/* Seek past tag */
if (this->input->seek(this->input, id3v2_size, SEEK_SET) < 0)
return 0;
-
+
/* Read musepack header */
if (this->input->read(this->input, this->header, HEADER_SIZE) != HEADER_SIZE)
return 0;
}
}
-
+
/* Validate signature - We only support SV 7.x at the moment */
if ( memcmp(this->header, "MP+", 3) != 0 ||
((this->header[3]&0x0f) != 0x07))
return 0;
-
+
/* Get frame count */
this->current_frame = 0;
this->frames = _X_LE_32(&this->header[4]);
lprintf("number of frames: %u\n", this->frames);
-
+
/* Get sample rate */
switch ((_X_LE_32(&this->header[8]) >> 16) & 0x3) {
case 0:
@@ -142,7 +142,7 @@ static int open_mpc_file(demux_mpc_t *this) {
break;
}
lprintf("samplerate: %f kHz\n", this->samplerate);
-
+
/* Calculate stream length */
this->length = (int) ((double) this->frames * 1152 / this->samplerate);
lprintf("stream length: %d ms\n", this->length);
@@ -151,14 +151,14 @@ static int open_mpc_file(demux_mpc_t *this) {
first_frame_size = (_X_LE_32(&this->header[24]) >> 4) & 0xFFFFF;
this->next_frame_bits = first_frame_size - 4;
lprintf("first frame size: %u\n", first_frame_size);
-
+
/* Move input to start of data (to nearest multiple of 4) */
this->input->seek(this->input, 28+id3v2_size, SEEK_SET);
-
+
/* Set stream info */
_x_stream_info_set(this->stream, XINE_STREAM_INFO_HAS_AUDIO, 1);
_x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_FOURCC, _X_ME_32(this->header));
-
+
return 1;
}
@@ -168,30 +168,30 @@ static int demux_mpc_send_chunk(demux_plugin_t *this_gen) {
off_t bytes_read;
buf_element_t *buf = NULL;
-
+
/* Check if we've finished */
if (this->current_frame++ == this->frames) {
lprintf("all frames read\n");
this->status = DEMUX_FINISHED;
- return this->status;
+ return this->status;
}
lprintf("current frame: %u\n", this->current_frame);
-
- /* Get a buffer */
+
+ /* Get a buffer */
buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo);
buf->type = BUF_AUDIO_MPC;
buf->pts = 0;
buf->extra_info->total_time = this->length;
-
+
/* Set normalised position */
- buf->extra_info->input_normpos =
- (int) ((double) this->input->get_current_pos(this->input) * 65535 /
+ buf->extra_info->input_normpos =
+ (int) ((double) this->input->get_current_pos(this->input) * 65535 /
this->input->get_length(this->input));
-
+
/* Set time based on there being 1152 audio frames per frame */
- buf->extra_info->input_time =
+ buf->extra_info->input_time =
(int) ((double) this->current_frame * 1152 / this->samplerate);
-
+
/* Calculate the number of bits that need to be read to finish reading
* the current frame and read the size of the next frame. This number
* has to be rounded up to the nearest 4 bytes on account of the
@@ -204,35 +204,35 @@ static int demux_mpc_send_chunk(demux_plugin_t *this_gen) {
xprintf(this->stream->xine, XINE_VERBOSITY_LOG,
_("demux_mpc: frame too big for buffer"));
this->status = DEMUX_FINISHED;
- return this->status;
+ return this->status;
}
-
+
/* Read data */
bytes_read = this->input->read(this->input, buf->content, bytes_to_read);
if(bytes_read <= 0) {
buf->free_buffer(buf);
this->status = DEMUX_FINISHED;
return this->status;
- } else
+ } else
buf->size = bytes_read;
-
+
/* Read the size of the next frame */
if (this->current_frame < this->frames) {
- /* The number of bits of the next frame we've read */
+ /* The number of bits of the next frame we've read */
extra_bits_read = bits_to_read - (this->next_frame_bits+20);
-
+
if(extra_bits_read <= 12)
next_frame_size = (_X_LE_32(&buf->content[bytes_to_read-4]) >> extra_bits_read) & 0xFFFFF;
else
next_frame_size = ((_X_LE_32(&buf->content[bytes_to_read-8]) << (32-extra_bits_read)) |
(_X_LE_32(&buf->content[bytes_to_read-4]) >> extra_bits_read)) & 0xFFFFF;
-
+
lprintf("next frame size: %u\n", next_frame_size);
-
+
/* The number of bits of the next frame still to read */
- this->next_frame_bits = next_frame_size - extra_bits_read;
+ this->next_frame_bits = next_frame_size - extra_bits_read;
}
-
+
/* Each buffer contains at least one frame */
buf->decoder_flags |= BUF_FLAG_FRAME_END;
@@ -255,14 +255,14 @@ static void demux_mpc_send_headers(demux_plugin_t *this_gen) {
/* Send header to decoder */
if (this->audio_fifo) {
buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo);
-
+
buf->type = BUF_AUDIO_MPC;
buf->decoder_flags = BUF_FLAG_HEADER|BUF_FLAG_FRAME_END;
buf->decoder_info[0] = this->input->get_length(this->input);
buf->decoder_info[1] = 0;
buf->decoder_info[2] = 0;
buf->decoder_info[3] = 0;
-
+
/* Copy the header */
buf->size = HEADER_SIZE;
memcpy(buf->content, this->header, buf->size);
@@ -351,12 +351,12 @@ static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *str
case METHOD_BY_CONTENT:
case METHOD_EXPLICIT:
-
+
if (!open_mpc_file(this)) {
free (this);
return NULL;
}
-
+
break;
default:
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 18:15:53 +0000