* Copyright (c) 2003 Sascha Sommer
* Copyright (c) 2005 Benjamin Larsson
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavcodec/cook.c
+ * @file
* Cook compatible decoder. Bastardization of the G.722.1 standard.
* This decoder handles RealNetworks, RealAudio G2 data.
* Cook is identified by the codec name cook in RM files.
#include "get_bits.h"
#include "dsputil.h"
#include "bytestream.h"
+#include "fft.h"
+#include "libavutil/audioconvert.h"
#include "cookdata.h"
AVLFG random_state;
/* transform data */
- MDCTContext mdct_ctx;
+ FFTContext mdct_ctx;
float* mlt_window;
/* VLC data */
/* data buffers */
uint8_t* decoded_bytes_buffer;
- DECLARE_ALIGNED_16(float,mono_mdct_output[2048]);
+ DECLARE_ALIGNED(16, float,mono_mdct_output)[2048];
float decode_buffer_1[1024];
float decode_buffer_2[1024];
float decode_buffer_0[1060]; /* static allocation for joint decode */
q->mlt_window[j] *= sqrt(2.0 / q->samples_per_channel);
/* Initialize the MDCT. */
- if (ff_mdct_init(&q->mdct_ctx, av_log2(mlt_size)+1, 1)) {
+ if (ff_mdct_init(&q->mdct_ctx, av_log2(mlt_size)+1, 1, 1.0)) {
av_free(q->mlt_window);
return -1;
}
/*************** init functions end ***********/
+#define DECODE_BYTES_PAD1(bytes) (3 - ((bytes)+3) % 4)
+#define DECODE_BYTES_PAD2(bytes) ((bytes) % 4 + DECODE_BYTES_PAD1(2 * (bytes)))
+
/**
* Cook indata decoding, every 32 bits are XORed with 0x37c511f2.
* Why? No idea, some checksum/error detection method maybe.
* @param out pointer to byte array of outdata
* @param bytes number of bytes
*/
-#define DECODE_BYTES_PAD1(bytes) (3 - ((bytes)+3) % 4)
-#define DECODE_BYTES_PAD2(bytes) ((bytes) % 4 + DECODE_BYTES_PAD1(2 * (bytes)))
static inline int decode_bytes(const uint8_t* inbuffer, uint8_t* out, int bytes){
int i, off;
/* FIXME: 64 bit platforms would be able to do 64 bits at a time.
* I'm too lazy though, should be something like
* for(i=0 ; i<bitamount/64 ; i++)
- * (int64_t)out[i] = 0x37c511f237c511f2^be2me_64(int64_t)in[i]);
+ * (int64_t)out[i] = 0x37c511f237c511f2^av_be2ne64(int64_t)in[i]);
* Buffer alignment needs to be checked. */
off = (intptr_t)inbuffer & 3;
buf = (const uint32_t*) (inbuffer - off);
- c = be2me_32((0x37c511f2 >> (off*8)) | (0x37c511f2 << (32-(off*8))));
+ c = av_be2ne32((0x37c511f2 >> (off*8)) | (0x37c511f2 << (32-(off*8))));
bytes += 3 + off;
for (i = 0; i < bytes/4; i++)
obuf[i] = c ^ buf[i];
/**
* Fill the gain array for the timedomain quantization.
*
- * @param q pointer to the COOKContext
- * @param gaininfo[9] array of gain indexes
+ * @param gb pointer to the GetBitContext
+ * @param gaininfo[9] array of gain indexes
*/
static void decode_gain_info(GetBitContext *gb, int *gaininfo)
* @param previous_buffer pointer to the previous buffer to be used for overlapping
*/
-static void imlt_window_float (COOKContext *q, float *buffer1,
+static void imlt_window_float (COOKContext *q, float *inbuffer,
cook_gains *gains_ptr, float *previous_buffer)
{
const float fc = pow2tab[gains_ptr->previous[0] + 63];
/* Apply window and overlap */
for(i = 0; i < q->samples_per_channel; i++){
- buffer1[i] = buffer1[i] * fc * q->mlt_window[i] -
+ inbuffer[i] = inbuffer[i] * fc * q->mlt_window[i] -
previous_buffer[i] * q->mlt_window[q->samples_per_channel - 1 - i];
}
}
int i;
/* Inverse modified discrete cosine transform */
- ff_imdct_calc(&q->mdct_ctx, q->mono_mdct_output, inbuffer);
+ q->mdct_ctx.imdct_calc(&q->mdct_ctx, q->mono_mdct_output, inbuffer);
q->imlt_window (q, buffer1, gains_ptr, previous_buffer);
*
* @param q pointer to the COOKContext
* @param inbuffer pointer to raw stream data
- * @param gain_ptr array of current/prev gain pointers
+ * @param gains_ptr array of current/prev gain pointers
*/
static inline void
*
* @param q pointer to the COOKContext
* @param decode_buffer pointer to the mlt coefficients
- * @param gain_ptr array of current/prev gain pointers
+ * @param gains_ptr array of current/prev gain pointers
* @param previous_buffer pointer to the previous buffer to be used for overlapping
* @param out pointer to the output buffer
* @param chan 0: left or single channel, 1: right channel
static inline void
mlt_compensate_output(COOKContext *q, float *decode_buffer,
- cook_gains *gains, float *previous_buffer,
+ cook_gains *gains_ptr, float *previous_buffer,
int16_t *out, int chan)
{
- imlt_gain(q, decode_buffer, gains, previous_buffer);
+ imlt_gain(q, decode_buffer, gains_ptr, previous_buffer);
q->saturate_output (q, chan, out);
}
*
* @param q pointer to the COOKContext
* @param inbuffer pointer to the inbuffer
- * @param sub_packet_size subpacket size
* @param outbuffer pointer to the outbuffer
*/
-
-
static void decode_subpacket(COOKContext *q, COOKSubpacket* p, const uint8_t *inbuffer, int16_t *outbuffer) {
int sub_packet_size = p->size;
/* packet dump */
/* estimate subpacket sizes */
q->subpacket[0].size = avctx->block_align;
+ for(i=1;i<q->num_subpackets;i++){
+ q->subpacket[i].size = 2 * buf[avctx->block_align - q->num_subpackets + i];
+ q->subpacket[0].size -= q->subpacket[i].size + 1;
+ if (q->subpacket[0].size < 0) {
+ av_log(avctx,AV_LOG_DEBUG,"frame subpacket size total > avctx->block_align!\n");
+ return -1;
+ }
+ }
+
/* decode supbackets */
*data_size = 0;
for(i=0;i<q->num_subpackets;i++){
const uint8_t *edata_ptr_end = edata_ptr + avctx->extradata_size;
int extradata_size = avctx->extradata_size;
int s = 0;
+ unsigned int channel_mask = 0;
q->avctx = avctx;
/* Take care of the codec specific extradata. */
q->bit_rate = avctx->bit_rate;
/* Initialize RNG. */
- av_lfg_init(&q->random_state, ff_random_get_seed());
+ av_lfg_init(&q->random_state, 0);
while(edata_ptr < edata_ptr_end){
/* 8 for mono, 16 for stereo, ? for multichannel
av_log(avctx,AV_LOG_DEBUG,"MONO\n");
break;
case STEREO:
- if (q->nb_channels != 1)
+ if (q->nb_channels != 1) {
q->subpacket[s].bits_per_subpdiv = 1;
- q->subpacket[s].num_channels = 2;
+ q->subpacket[s].num_channels = 2;
+ }
av_log(avctx,AV_LOG_DEBUG,"STEREO\n");
break;
case JOINT_STEREO:
}
break;
case MC_COOK:
- av_log(avctx,AV_LOG_ERROR,"MC_COOK not supported!\n");
- return -1;
+ av_log(avctx,AV_LOG_DEBUG,"MULTI_CHANNEL\n");
+ if(extradata_size >= 4)
+ channel_mask |= q->subpacket[s].channel_mask = bytestream_get_be32(&edata_ptr);
+
+ if(cook_count_channels(q->subpacket[s].channel_mask) > 1){
+ q->subpacket[s].total_subbands = q->subpacket[s].subbands + q->subpacket[s].js_subband_start;
+ q->subpacket[s].joint_stereo = 1;
+ q->subpacket[s].num_channels = 2;
+ q->subpacket[s].samples_per_channel = q->subpacket[s].samples_per_frame >> 1;
+
+ if (q->subpacket[s].samples_per_channel > 256) {
+ q->subpacket[s].log2_numvector_size = 6;
+ }
+ if (q->subpacket[s].samples_per_channel > 512) {
+ q->subpacket[s].log2_numvector_size = 7;
+ }
+ }else
+ q->subpacket[s].samples_per_channel = q->subpacket[s].samples_per_frame;
+
break;
default:
av_log(avctx,AV_LOG_ERROR,"Unknown Cook version, report sample!\n");
q->num_subpackets++;
s++;
+ if (s > MAX_SUBPACKETS) {
+ av_log(avctx,AV_LOG_ERROR,"Too many subpackets > 5, report file!\n");
+ return -1;
+ }
}
/* Generate tables */
init_pow2table();
return -1;
}
- avctx->sample_fmt = SAMPLE_FMT_S16;
- avctx->channel_layout = (avctx->channels==2) ? CH_LAYOUT_STEREO : CH_LAYOUT_MONO;
+ avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+ if (channel_mask)
+ avctx->channel_layout = channel_mask;
+ else
+ avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
#ifdef COOKDEBUG
dump_cook_context(q);
}
-AVCodec cook_decoder =
+AVCodec ff_cook_decoder =
{
.name = "cook",
- .type = CODEC_TYPE_AUDIO,
+ .type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_COOK,
.priv_data_size = sizeof(COOKContext),
.init = cook_decode_init,
projects / ffmpeg / blobdiff