/*
* Copyright (c) 2001-2003 The ffmpeg Project
*
+ * first version by Francois Revol (revol@free.fr)
+ * fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
+ * by Mike Melanson (melanson@pcisys.net)
+ * CD-ROM XA ADPCM codec by BERO
+ * EA ADPCM decoder by Robin Kay (komadori@myrealbox.com)
+ * EA ADPCM R1/R2/R3 decoder by Peter Ross (pross@xvid.org)
+ * EA IMA EACS decoder by Peter Ross (pross@xvid.org)
+ * EA IMA SEAD decoder by Peter Ross (pross@xvid.org)
+ * EA ADPCM XAS decoder by Peter Ross (pross@xvid.org)
+ * MAXIS EA ADPCM decoder by Robert Marston (rmarston@gmail.com)
+ * THP ADPCM decoder by Marco Gerards (mgerards@xs4all.nl)
+ *
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
#include "bytestream.h"
#include "adpcm.h"
#include "adpcm_data.h"
+#include "internal.h"
/**
* @file
* ADPCM decoders
- * First version by Francois Revol (revol@free.fr)
- * Fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
- * by Mike Melanson (melanson@pcisys.net)
- * CD-ROM XA ADPCM codec by BERO
- * EA ADPCM decoder by Robin Kay (komadori@myrealbox.com)
- * EA ADPCM R1/R2/R3 decoder by Peter Ross (pross@xvid.org)
- * EA IMA EACS decoder by Peter Ross (pross@xvid.org)
- * EA IMA SEAD decoder by Peter Ross (pross@xvid.org)
- * EA ADPCM XAS decoder by Peter Ross (pross@xvid.org)
- * MAXIS EA ADPCM decoder by Robert Marston (rmarston@gmail.com)
- * THP ADPCM decoder by Marco Gerards (mgerards@xs4all.nl)
- *
* Features and limitations:
*
* Reference documents:
/* end of tables */
typedef struct ADPCMDecodeContext {
- AVFrame frame;
ADPCMChannelStatus status[6];
int vqa_version; /**< VQA version. Used for ADPCM_IMA_WS */
} ADPCMDecodeContext;
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
}
- avcodec_get_frame_defaults(&c->frame);
- avctx->coded_frame = &c->frame;
-
return 0;
}
static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
+ AVFrame *frame = data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
ADPCMDecodeContext *c = avctx->priv_data;
}
/* get output buffer */
- c->frame.nb_samples = nb_samples;
- if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+ frame->nb_samples = nb_samples;
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
- samples = (short *)c->frame.data[0];
- samples_p = (int16_t **)c->frame.extended_data;
+ samples = (short *)frame->data[0];
+ samples_p = (int16_t **)frame->extended_data;
/* use coded_samples when applicable */
/* it is always <= nb_samples, so the output buffer will be large enough */
if (coded_samples) {
if (coded_samples != nb_samples)
av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
- c->frame.nb_samples = nb_samples = coded_samples;
+ frame->nb_samples = nb_samples = coded_samples;
}
st = avctx->channels == 2 ? 1 : 0;
}
for (i = 0; i < avctx->channels; i++) {
- samples = (int16_t *)c->frame.data[i];
+ samples = (int16_t *)frame->data[i];
cs = &c->status[i];
for (n = nb_samples >> 1; n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
return AVERROR_INVALIDDATA;
}
}
- for (n = nb_samples >> (1 - st); n > 0; n--) {
+ for (n = (nb_samples >> (1 - st)) - 1; n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
*samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
*samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
}
}
- c->frame.nb_samples = count * 28;
+ frame->nb_samples = count * 28;
bytestream2_seek(&gb, 0, SEEK_END);
break;
}
return -1;
}
- *got_frame_ptr = 1;
- *(AVFrame *)data = c->frame;
+ *got_frame_ptr = 1;
return bytestream2_tell(&gb);
}
#define ADPCM_DECODER(id_, sample_fmts_, name_, long_name_) \
AVCodec ff_ ## name_ ## _decoder = { \
.name = #name_, \
+ .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
.type = AVMEDIA_TYPE_AUDIO, \
.id = id_, \
.priv_data_size = sizeof(ADPCMDecodeContext), \
.init = adpcm_decode_init, \
.decode = adpcm_decode_frame, \
.capabilities = CODEC_CAP_DR1, \
- .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
.sample_fmts = sample_fmts_, \
}