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dca: Move ff_dca_convert_bitstream() to the DCA common code

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This makes the DCA parser and decoder independent.
This commit is contained in:
Diego Biurrun
2013-03-26 18:17:57 +01:00
parent b247253929
commit 1db6a080bd
6 changed files with 44 additions and 75 deletions
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37
libavcodec/dca_parser.c
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@@ -24,9 +24,7 @@
#include "parser.h"
#include "dca.h"
#include "dca_parser.h"
#include "get_bits.h"
#include "put_bits.h"
typedef struct DCAParseContext {
ParseContext pc;
@@ -103,41 +101,6 @@ static av_cold int dca_parse_init(AVCodecParserContext * s)
return 0;
}
int ff_dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst,
int max_size)
{
uint32_t mrk;
int i, tmp;
const uint16_t *ssrc = (const uint16_t *) src;
uint16_t *sdst = (uint16_t *) dst;
PutBitContext pb;
if ((unsigned) src_size > (unsigned) max_size)
src_size = max_size;
mrk = AV_RB32(src);
switch (mrk) {
case DCA_MARKER_RAW_BE:
memcpy(dst, src, src_size);
return src_size;
case DCA_MARKER_RAW_LE:
for (i = 0; i < (src_size + 1) >> 1; i++)
*sdst++ = av_bswap16(*ssrc++);
return src_size;
case DCA_MARKER_14B_BE:
case DCA_MARKER_14B_LE:
init_put_bits(&pb, dst, max_size);
for (i = 0; i < (src_size + 1) >> 1; i++, src += 2) {
tmp = ((mrk == DCA_MARKER_14B_BE) ? AV_RB16(src) : AV_RL16(src)) & 0x3FFF;
put_bits(&pb, 14, tmp);
}
flush_put_bits(&pb);
return (put_bits_count(&pb) + 7) >> 3;
default:
return AVERROR_INVALIDDATA;
}
}
static int dca_parse_params(const uint8_t *buf, int buf_size, int *duration,
int *sample_rate)
{