* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*/
+/*
+ * based in parts on libfaad, Copyright (C) 2003-2005 M. Bakker,
+ * Ahead Software AG
+ */
+
/** \file aacdec.c paraslash's mp3 decoder */
#include "para.h"
#include "list.h"
#include "filter.h"
#include "error.h"
-#include <mad.h>
#include "string.h"
-
-#include <neaacdec.h>
+#include "aac.h"
/** the output buffer size */
#define MAX_CHANNELS 6
*/
struct private_mp4dec_data {
NeAACDecHandle decoder;
- NeAACDecConfigurationPtr config;
NeAACDecFrameInfo frame_info;
- mp4AudioSpecificConfig mp4ASC;
int initialized;
- char *inbuf;
- int inbuf_len;
+ int decoder_length;
int consumed;
long unsigned consumed_total;
- int noffsets;
- int *offset;
- int offset_pos;
+ long unsigned entry;
};
-static int read_mp4_descr_length(struct private_mp4dec_data *padd)
-{
- uint8_t b;
- uint8_t numBytes = 0;
- uint32_t length = 0;
-
- do {
- b = padd->inbuf[padd->consumed + numBytes];
- numBytes++;
- length = (length << 7) | (b & 0x7F);
- } while
- ((b & 0x80) && numBytes < 4);
- padd->consumed += numBytes;
- return length;
-}
-
-static int find_esds(struct private_mp4dec_data *padd)
-{
- for (; padd->consumed < padd->inbuf_len; padd->consumed++) {
- char *p = padd->inbuf + padd->consumed;
- int decoder_length;
-
- if (p[0] != 'e' || p[1] != 's' || p[2] != 'd' || p[3] != 's')
- continue;
- padd->consumed += 8;
- p = padd->inbuf + padd->consumed;
- PARA_INFO_LOG("found esds: %d, next: %x\n", padd->consumed, *p);
- if (*p == 3)
- padd->consumed += 8;
- else
- padd->consumed += 6;
- p = padd->inbuf + padd->consumed;
- PARA_INFO_LOG("next: %x\n", *p);
- if (*p != 4)
- continue;
- padd->consumed += 18;
- p = padd->inbuf + padd->consumed;
- PARA_INFO_LOG("next: %x\n", *p);
- if (*p != 5)
- continue;
- padd->consumed++;
- decoder_length = read_mp4_descr_length(padd);
- PARA_INFO_LOG("decoder length: %d\n", decoder_length);
- p = padd->inbuf + padd->consumed;
- PARA_INFO_LOG("decoder data0: %x\n", *p & 0xff);
- p++;
- PARA_INFO_LOG("decoder data1: %x\n", *p & 0xff);
- return decoder_length;
- }
- return -E_ESDS;
-}
-
-static int read_int32(struct private_mp4dec_data *padd, unsigned *result)
-{
- uint8_t *d = (uint8_t*)(padd->inbuf + padd->consumed);
- if (padd->consumed + 4 > padd->inbuf_len)
- return -1;
- padd->consumed += 4;
- *result = (d[0] << 24) | (d[1] << 16) | (d[2] << 8) | d[3];
- return 1;
-}
-
-static int fill_offset_table(struct private_mp4dec_data *padd)
-{
- int i, ret;
-
- for (i = padd->offset_pos; i < padd->noffsets; i++) {
- ret = read_int32(padd, &padd->offset[i]);
- if (ret < 0)
- return -1;
- PARA_DEBUG_LOG("offset #%d: %d\n", i, padd->offset[i]);
- padd->offset_pos++;
- }
- return 1;
-}
-
-static int find_stco(struct private_mp4dec_data *padd)
-{
- int ret;
-
- for (; padd->consumed < padd->inbuf_len; padd->consumed++) {
- char *p = padd->inbuf + padd->consumed;
-
- if (p[0] != 's' || p[1] != 't' || p[2] != 'c' || p[3] != 'o')
- continue;
- PARA_INFO_LOG("found stco: %d\n", padd->consumed);
- padd->consumed += 8;
- ret = read_int32(padd, &padd->noffsets);
- padd->offset = para_malloc(padd->noffsets * sizeof(int));
- PARA_INFO_LOG("num entries: %d\n", padd->noffsets);
- return 1;
- }
- return -E_STCO;
-}
-
-static ssize_t mp4dec(char *inbuffer, size_t len, struct filter_node *fn)
+static ssize_t mp4dec(char *input_buffer, size_t len, struct filter_node *fn)
{
struct private_mp4dec_data *padd = fn->private_data;
struct filter_chain_info *fci = fn->fci;
unsigned long rate = 0;
unsigned char channels = 0;
- int i, ret, nbytes;
+ int i, ret, skip;
unsigned char *p, *outbuffer;
+ unsigned char *inbuf = (unsigned char*)input_buffer;
if (fn->loaded > fn->bufsize * 4 / 5)
return 0;
if (len < 1000 && !*fci->eof)
return 0;
padd->consumed = 0;
- padd->inbuf = inbuffer;
- padd->inbuf_len = len;
if (!padd->initialized) {
- ret = find_esds(padd);
- if (ret < 0)
- goto out;
-
- p = inbuffer + padd->consumed;
- ret = E_AACDEC_INIT;
- if (NeAACDecInit2(padd->decoder, p, ret, &rate, &channels) < 0) {
- PARA_INFO_LOG("header not found, consumed: %d\n",
- padd->consumed);
- goto out;
+ padd->decoder_length = aac_find_esds(inbuf, len, &skip);
+ PARA_INFO_LOG("decoder len: %d\n", padd->decoder_length);
+ if (padd->decoder_length < 0) {
+ ret = NeAACDecInit(padd->decoder, inbuf,
+ len, &rate, &channels);
+ PARA_INFO_LOG("decoder init: %d\n", ret);
+ if (ret < 0) {
+ ret = -E_AACDEC_INIT;
+ goto out;
+ }
+ padd->consumed = ret;
+ } else {
+ padd->consumed += skip;
+ p = inbuf + padd->consumed;
+ ret = -E_AACDEC_INIT;
+ if (NeAACDecInit2(padd->decoder, p,
+ padd->decoder_length, &rate,
+ &channels) < 0)
+ goto out;
}
fci->samplerate = rate;
fci->channels = channels;
- PARA_INFO_LOG("rate: %u, channels: %d\n", fci->samplerate,
- fci->channels);
+ PARA_INFO_LOG("rate: %u, channels: %d\n",
+ fci->samplerate, fci->channels);
padd->initialized = 1;
}
- padd->consumed = 0;
- if (!padd->offset_pos) {
+ if (padd->decoder_length > 0) {
+ padd->consumed = 0;
+ if (!padd->entry) {
+ ret = aac_find_stco(inbuf + padd->consumed,
+ len - padd->consumed, &skip);
+ if (ret < 0) {
+ ret = len;
+ goto out;
+ }
+ padd->consumed += skip;
+ padd->entry = aac_read_int32(inbuf + padd->consumed);
+ PARA_INFO_LOG("entry: %lu\n", padd->entry);
+ }
ret = len;
- if (find_stco(padd) < 0)
+ if (padd->consumed_total + len < padd->entry)
goto out;
+ if (padd->consumed_total < padd->entry)
+ padd->consumed = padd->entry - padd->consumed_total;
}
- if (padd->offset_pos < padd->noffsets) {
- fill_offset_table(padd);
- ret = padd->consumed;
- goto out;
- }
- PARA_INFO_LOG("consumed total: %lu, first_chunk: %d\n",
- padd->consumed_total, padd->offset[0]);
- ret = len;
- if (padd->consumed_total + len < padd->offset[0])
- goto out;
- if (padd->consumed_total < padd->offset[0])
- padd->consumed = padd->offset[0] - padd->consumed_total;
- p = padd->inbuf + padd->consumed;
+ for (; padd->consumed < len; padd->consumed++)
+ if ((inbuf[padd->consumed] & 0xfe) == 0x20)
+ break;
+ if (padd->consumed >= len)
+ goto success;
+ p = inbuf + padd->consumed;
outbuffer = NeAACDecDecode(padd->decoder, &padd->frame_info, p,
len - padd->consumed);
- PARA_INFO_LOG("frame_error: %d, consumed: %lu + %d + %lu\n",
- padd->frame_info.error, padd->consumed_total,
- padd->consumed, padd->frame_info.bytesconsumed);
ret = -E_AAC_DECODE;
if (padd->frame_info.error != 0) {
+ PARA_ERROR_LOG("frame_error: %d, consumed: %lu + %d + %lu\n",
+ padd->frame_info.error, padd->consumed_total,
+ padd->consumed, padd->frame_info.bytesconsumed);
PARA_ERROR_LOG("%s\n", NeAACDecGetErrorMessage(
padd->frame_info.error));
- goto out;
+ padd->consumed++; /* catch 21 */
+ goto success;
}
padd->consumed += padd->frame_info.bytesconsumed;
ret = padd->consumed;
if (!padd->frame_info.samples)
goto out;
- nbytes = padd->frame_info.samples;
for (i = 0; i < padd->frame_info.samples; i++) {
short *s = (short *)outbuffer;
fn->buf[fn->loaded++] = s[i] & 0xff;
fn->buf[fn->loaded++] = (s[i] >> 8) & 0xff;
}
+success:
ret = padd->consumed;
out:
if (ret > 0)
fn->bufsize = AAC_OUTBUF_SIZE;
fn->buf = para_calloc(fn->bufsize);
-
- padd->decoder = NeAACDecOpen();
- padd->config = NeAACDecGetCurrentConfiguration(padd->decoder);
- padd->config->defObjectType = LC;
- padd->config->outputFormat = FAAD_FMT_16BIT;
- padd->config->downMatrix = 0;
- NeAACDecSetConfiguration(padd->decoder, padd->config);
+ padd->decoder = aac_open();
}
static void mp4dec_close(struct filter_node *fn)
projects / paraslash.git / blobdiff