-/*
- * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/*
* based in parts on libfaad, Copyright (C) 2003-2005 M. Bakker,
* Ahead Software AG
/** \file aacdec_filter.c paraslash's aac (m4a) decoder. */
#include <regex.h>
+#include <neaacdec.h>
#include "para.h"
+#include "portable_io.h"
#include "list.h"
#include "sched.h"
-#include "ggo.h"
+#include "buffer_tree.h"
#include "filter.h"
#include "error.h"
#include "string.h"
-#include "aac.h"
-
-/** the output buffer size */
-#define AAC_OUTBUF_SIZE (32 * 1024)
-/** give up decoding after that many errors */
+/** Give up decoding after that many errors. */
#define MAX_ERRORS 20
/**
* data specific to the aacdec filter
*
- * \sa filter, filter_node
+ * \sa \ref filter, \ref filter_node.
*/
struct private_aacdec_data {
/** the return value of aac_open */
NeAACDecHandle handle;
- /** info about the currently decoded frame */
- NeAACDecFrameInfo frame_info;
/** whether this instance of the aac decoder is already initialized */
- int initialized;
- /**
- * return value of aac_find_esds(). Used to call the right aacdec
- * init function
- */
- unsigned long decoder_length;
+ bool initialized;
/** number of times the decoder returned an error */
unsigned error_count;
/** number of bytes already consumed from the imput stream */
size_t consumed_total;
- /** return value of aac_find_entry_point */
- size_t entry;
+ /** The number of channels of the current stream. */
+ unsigned int channels;
+ /** Current sample rate in Hz. */
+ unsigned int sample_rate;
};
-static ssize_t aacdec(char *input_buffer, size_t len, struct filter_node *fn)
+static int aacdec_execute(struct btr_node *btrn, const char *cmd, char **result)
{
+ struct filter_node *fn = btr_context(btrn);
+ struct private_aacdec_data *padd = fn->private_data;
+
+ return decoder_execute(cmd, padd->sample_rate, padd->channels, result);
+}
+
+static void aacdec_open(struct filter_node *fn)
+{
+ NeAACDecConfigurationPtr c;
+ struct private_aacdec_data *padd = zalloc(sizeof(*padd));
+
+ padd->handle = NeAACDecOpen();
+ c = NeAACDecGetCurrentConfiguration(padd->handle);
+ c->defObjectType = LC;
+ c->outputFormat = FAAD_FMT_16BIT;
+ c->downMatrix = 0;
+ NeAACDecSetConfiguration(padd->handle, c);
+
+ fn->private_data = padd;
+ fn->min_iqs = 2048;
+}
+
+static void aacdec_close(struct filter_node *fn)
+{
+ struct private_aacdec_data *padd = fn->private_data;
+
+ NeAACDecClose(padd->handle);
+ free(padd);
+ fn->private_data = NULL;
+}
+
+static int aacdec_post_monitor(__a_unused struct sched *s, void *context)
+{
+ struct filter_node *fn = context;
+ struct btr_node *btrn = fn->btrn;
struct private_aacdec_data *padd = fn->private_data;
- struct filter_chain *fc = fn->fc;
int i, ret;
- unsigned char *p, *outbuffer;
- unsigned char *inbuf = (unsigned char*)input_buffer;
- size_t skip, consumed = 0;
+ char *inbuf, *outbuf, *btrbuf;
+ size_t len, consumed, loaded = 0;
+ NeAACDecFrameInfo frame_info;
- if (fn->loaded > fn->bufsize * 3 / 5)
- return 0;
- ret = *fc->input_error;
+next_buffer:
+ ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
if (ret < 0)
- return ret;
- if (len < 2048)
+ goto err;
+ if (ret == 0)
return 0;
-
+ btr_merge(btrn, fn->min_iqs);
+ len = btr_next_buffer(btrn, &inbuf);
+ len = PARA_MIN(len, (size_t)8192);
+ consumed = 0;
if (!padd->initialized) {
unsigned long rate = 0;
unsigned char channels = 0;
- ret = aac_find_esds(inbuf, len, &skip, &padd->decoder_length);
+ ret = NeAACDecInit(padd->handle, (unsigned char *)inbuf,
+ len, &rate, &channels);
+ PARA_INFO_LOG("decoder init: %d\n", ret);
if (ret < 0) {
- PARA_INFO_LOG("%s\n", para_strerror(-ret));
- ret = NeAACDecInit(padd->handle, inbuf,
- len, &rate, &channels);
- PARA_INFO_LOG("decoder init: %d\n", ret);
- if (ret < 0) {
- ret = -E_AACDEC_INIT;
- goto out;
- }
- consumed = ret;
- } else {
- PARA_INFO_LOG("decoder len: %lu\n",
- padd->decoder_length);
- consumed += skip;
- p = inbuf + consumed;
ret = -E_AACDEC_INIT;
- if (NeAACDecInit2(padd->handle, p,
- padd->decoder_length, &rate,
- &channels) < 0)
- goto out;
- }
- fc->samplerate = rate;
- fc->channels = channels;
- PARA_INFO_LOG("rate: %u, channels: %d\n",
- fc->samplerate, fc->channels);
- padd->initialized = 1;
- }
- if (padd->decoder_length > 0) {
- consumed = 0;
- if (!padd->entry) {
- ret = aac_find_entry_point(inbuf + consumed,
- len - consumed, &skip);
- if (ret < 0) {
- ret = len;
- goto out;
- }
- consumed += skip;
- padd->entry = ret;
- PARA_INFO_LOG("entry: %zu\n", padd->entry);
+ goto err;
}
- ret = len;
- if (padd->consumed_total + len < padd->entry)
- goto out;
- if (padd->consumed_total < padd->entry)
- consumed = padd->entry - padd->consumed_total;
+ consumed = ret;
+ padd->sample_rate = rate;
+ padd->channels = channels;
+ PARA_INFO_LOG("rate: %u, channels: %u\n",
+ padd->sample_rate, padd->channels);
+ padd->initialized = true;
}
- for (; consumed < len; consumed++)
- if ((inbuf[consumed] & 0xfe) == 0x20)
- break;
if (consumed >= len)
goto success;
- p = inbuf + consumed;
- outbuffer = NeAACDecDecode(padd->handle, &padd->frame_info, p,
- len - consumed);
- if (padd->frame_info.error) {
+ //PARA_CRIT_LOG("consumed: %zu (%zu + %zu), have: %zu\n", padd->consumed_total + consumed,
+ // padd->consumed_total, consumed, len - consumed);
+ outbuf = NeAACDecDecode(padd->handle, &frame_info,
+ (unsigned char *)inbuf + consumed, len - consumed);
+ if (frame_info.error) {
+ int err = frame_info.error;
ret = -E_AAC_DECODE;
if (padd->error_count++ > MAX_ERRORS)
- goto out;
- PARA_ERROR_LOG("frame_error: %d, consumed: %zu + %zd + %lu\n",
- padd->frame_info.error, padd->consumed_total,
- consumed, padd->frame_info.bytesconsumed);
- PARA_ERROR_LOG("%s\n", NeAACDecGetErrorMessage(
- padd->frame_info.error));
- consumed++; /* catch 21 */
+ goto err;
+ PARA_NOTICE_LOG("error #%u: (%s)\n", padd->error_count,
+ NeAACDecGetErrorMessage(err));
+ PARA_NOTICE_LOG("consumed (total, buffer, frame): "
+ "%zu, %zu, %lu\n",
+ padd->consumed_total, consumed,
+ frame_info.bytesconsumed);
+ consumed++; /* just eat one byte and hope for the best */
goto success;
}
padd->error_count = 0;
- consumed += padd->frame_info.bytesconsumed;
- ret = consumed;
- if (!padd->frame_info.samples)
- goto out;
- ret = -E_AAC_OVERRUN;
- if (padd->frame_info.samples * 2 + fn->loaded > fn->bufsize)
- goto out;
- for (i = 0; i < padd->frame_info.samples; i++) {
- short *s = (short *)outbuffer;
- write_int16_host_endian(fn->buf + fn->loaded, s[i]);
- fn->loaded += 2;
+ //PARA_CRIT_LOG("decoder ate %lu\n", frame_info.bytesconsumed);
+ consumed += frame_info.bytesconsumed;
+ if (!frame_info.samples)
+ goto success;
+ btrbuf = arr_alloc(2, frame_info.samples);
+ for (i = 0; i < frame_info.samples; i++) {
+ short sh = ((short *)outbuf)[i];
+ write_int16_host_endian(btrbuf + loaded, sh);
+ loaded += 2;
}
+ btr_add_output(btrbuf, loaded, btrn);
success:
- ret = consumed;
-out:
- if (ret > 0)
- padd->consumed_total += ret;
+ btr_consume(btrn, consumed);
+ padd->consumed_total += consumed;
+ if (loaded == 0)
+ goto next_buffer;
+ return 1;
+err:
+ assert(ret < 0);
+ btr_remove_node(&fn->btrn);
return ret;
}
-static void aacdec_open(struct filter_node *fn)
-{
- struct private_aacdec_data *padd = para_calloc(sizeof(*padd));
-
- fn->private_data = padd;
- fn->bufsize = AAC_OUTBUF_SIZE;
- fn->buf = para_calloc(fn->bufsize);
- padd->handle = aac_open();
-}
-
-static void aacdec_close(struct filter_node *fn)
-{
- struct private_aacdec_data *padd = fn->private_data;
-
- NeAACDecClose(padd->handle);
- free(fn->buf);
- fn->buf = NULL;
- free(padd);
- fn->private_data = NULL;
-}
-
-/**
- * the init function of the aacdec filter
- *
- * \param f pointer to the filter struct to initialize
- *
- * \sa filter::init
- */
-void aacdec_filter_init(struct filter *f)
-{
- f->open = aacdec_open;
- f->convert = aacdec;
- f->close = aacdec_close;
-}
+const struct filter lsg_filter_cmd_com_aacdec_user_data = {
+ .open = aacdec_open,
+ .close = aacdec_close,
+ .pre_monitor = generic_filter_pre_monitor,
+ .post_monitor = aacdec_post_monitor,
+ .execute = aacdec_execute
+};
projects / paraslash.git / blobdiff