/*
* PCM codecs
- * Copyright (c) 2001 Fabrice Bellard.
+ * Copyright (c) 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
*/
/**
- * @file pcm.c
+ * @file
* PCM codecs
*/
#include "avcodec.h"
-#include "bitstream.h" // for ff_reverse
+#include "libavutil/common.h" /* for av_reverse */
#include "bytestream.h"
+#include "pcm_tablegen.h"
#define MAX_CHANNELS 64
-/* from g711.c by SUN microsystems (unrestricted use) */
-
-#define SIGN_BIT (0x80) /* Sign bit for a A-law byte. */
-#define QUANT_MASK (0xf) /* Quantization field mask. */
-#define NSEGS (8) /* Number of A-law segments. */
-#define SEG_SHIFT (4) /* Left shift for segment number. */
-#define SEG_MASK (0x70) /* Segment field mask. */
-
-#define BIAS (0x84) /* Bias for linear code. */
-
-/*
- * alaw2linear() - Convert an A-law value to 16-bit linear PCM
- *
- */
-static av_cold int alaw2linear(unsigned char a_val)
-{
- int t;
- int seg;
-
- a_val ^= 0x55;
-
- t = a_val & QUANT_MASK;
- seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT;
- if(seg) t= (t + t + 1 + 32) << (seg + 2);
- else t= (t + t + 1 ) << 3;
-
- return (a_val & SIGN_BIT) ? t : -t;
-}
-
-static av_cold int ulaw2linear(unsigned char u_val)
-{
- int t;
-
- /* Complement to obtain normal u-law value. */
- u_val = ~u_val;
-
- /*
- * Extract and bias the quantization bits. Then
- * shift up by the segment number and subtract out the bias.
- */
- t = ((u_val & QUANT_MASK) << 3) + BIAS;
- t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT;
-
- return (u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS);
-}
-
-/* 16384 entries per table */
-static uint8_t linear_to_alaw[16384];
-static uint8_t linear_to_ulaw[16384];
-
-static av_cold void build_xlaw_table(uint8_t *linear_to_xlaw,
- int (*xlaw2linear)(unsigned char),
- int mask)
-{
- int i, j, v, v1, v2;
-
- j = 0;
- for(i=0;i<128;i++) {
- if (i != 127) {
- v1 = xlaw2linear(i ^ mask);
- v2 = xlaw2linear((i + 1) ^ mask);
- v = (v1 + v2 + 4) >> 3;
- } else {
- v = 8192;
- }
- for(;j<v;j++) {
- linear_to_xlaw[8192 + j] = (i ^ mask);
- if (j > 0)
- linear_to_xlaw[8192 - j] = (i ^ (mask ^ 0x80));
- }
- }
- linear_to_xlaw[0] = linear_to_xlaw[1];
-}
-
static av_cold int pcm_encode_init(AVCodecContext *avctx)
{
avctx->frame_size = 1;
switch(avctx->codec->id) {
case CODEC_ID_PCM_ALAW:
- build_xlaw_table(linear_to_alaw, alaw2linear, 0xd5);
+ pcm_alaw_tableinit();
break;
case CODEC_ID_PCM_MULAW:
- build_xlaw_table(linear_to_ulaw, ulaw2linear, 0xff);
+ pcm_ulaw_tableinit();
break;
default:
break;
break;
case CODEC_ID_PCM_S24DAUD:
for(;n>0;n--) {
- uint32_t tmp = ff_reverse[(*samples >> 8) & 0xff] +
- (ff_reverse[*samples & 0xff] << 8);
+ uint32_t tmp = av_reverse[(*samples >> 8) & 0xff] +
+ (av_reverse[*samples & 0xff] << 8);
tmp <<= 4; // sync flags would go here
bytestream_put_be24(&dst, tmp);
samples++;
*dst++ = v - 128;
}
break;
-#if WORDS_BIGENDIAN
+#if HAVE_BIGENDIAN
case CODEC_ID_PCM_F64LE:
ENCODE(int64_t, le64, samples, dst, n, 0, 0)
break;
case CODEC_ID_PCM_F32LE:
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_S16LE:
-#endif /* WORDS_BIGENDIAN */
+#endif /* HAVE_BIGENDIAN */
case CODEC_ID_PCM_U8:
memcpy(dst, samples, n*sample_size);
dst += n*sample_size;
}
avctx->sample_fmt = avctx->codec->sample_fmts[0];
+
+ if (avctx->sample_fmt == SAMPLE_FMT_S32)
+ avctx->bits_per_raw_sample = av_get_bits_per_sample(avctx->codec->id);
+
return 0;
}
static int pcm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
PCMDecode *s = avctx->priv_data;
int sample_size, c, n;
short *samples;
n = avctx->channels * sample_size;
if(n && buf_size % n){
- av_log(avctx, AV_LOG_ERROR, "invalid PCM packet\n");
- return -1;
+ if (buf_size < n) {
+ av_log(avctx, AV_LOG_ERROR, "invalid PCM packet\n");
+ return -1;
+ }else
+ buf_size -= buf_size % n;
}
buf_size= FFMIN(buf_size, *data_size/2);
for(;n>0;n--) {
uint32_t v = bytestream_get_be24(&src);
v >>= 4; // sync flags are here
- *samples++ = ff_reverse[(v >> 8) & 0xff] +
- (ff_reverse[v & 0xff] << 8);
+ *samples++ = av_reverse[(v >> 8) & 0xff] +
+ (av_reverse[v & 0xff] << 8);
}
break;
case CODEC_ID_PCM_S16LE_PLANAR:
}
samples= (short*)dstu8;
break;
-#if WORDS_BIGENDIAN
+#if HAVE_BIGENDIAN
case CODEC_ID_PCM_F64LE:
DECODE(int64_t, le64, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_F32LE:
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_S16LE:
-#endif /* WORDS_BIGENDIAN */
+#endif /* HAVE_BIGENDIAN */
case CODEC_ID_PCM_U8:
memcpy(samples, src, n*sample_size);
src += n*sample_size;
return src - buf;
}
-#ifdef CONFIG_ENCODERS
+#if CONFIG_ENCODERS
#define PCM_ENCODER(id,sample_fmt_,name,long_name_) \
AVCodec name ## _encoder = { \
#name, \
- CODEC_TYPE_AUDIO, \
+ AVMEDIA_TYPE_AUDIO, \
id, \
0, \
pcm_encode_init, \
pcm_encode_frame, \
pcm_encode_close, \
NULL, \
- .sample_fmts = (enum SampleFormat[]){sample_fmt_,SAMPLE_FMT_NONE}, \
+ .sample_fmts = (const enum SampleFormat[]){sample_fmt_,SAMPLE_FMT_NONE}, \
.long_name = NULL_IF_CONFIG_SMALL(long_name_), \
};
#else
#define PCM_ENCODER(id,sample_fmt_,name,long_name_)
#endif
-#ifdef CONFIG_DECODERS
+#if CONFIG_DECODERS
#define PCM_DECODER(id,sample_fmt_,name,long_name_) \
AVCodec name ## _decoder = { \
#name, \
- CODEC_TYPE_AUDIO, \
+ AVMEDIA_TYPE_AUDIO, \
id, \
sizeof(PCMDecode), \
pcm_decode_init, \
NULL, \
NULL, \
pcm_decode_frame, \
- .sample_fmts = (enum SampleFormat[]){sample_fmt_,SAMPLE_FMT_NONE}, \
+ .sample_fmts = (const enum SampleFormat[]){sample_fmt_,SAMPLE_FMT_NONE}, \
.long_name = NULL_IF_CONFIG_SMALL(long_name_), \
};
#else
PCM_ENCODER(id,sample_fmt_,name,long_name_) PCM_DECODER(id,sample_fmt_,name,long_name_)
/* Note: Do not forget to add new entries to the Makefile as well. */
-PCM_CODEC (CODEC_ID_PCM_ALAW, SAMPLE_FMT_S16, pcm_alaw, "A-law PCM");
-PCM_CODEC (CODEC_ID_PCM_DVD, SAMPLE_FMT_S32, pcm_dvd, "signed 20|24-bit big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_F32BE, SAMPLE_FMT_FLT, pcm_f32be, "32-bit floating point big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_F32LE, SAMPLE_FMT_FLT, pcm_f32le, "32-bit floating point little-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_F64BE, SAMPLE_FMT_DBL, pcm_f64be, "64-bit floating point big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_F64LE, SAMPLE_FMT_DBL, pcm_f64le, "64-bit floating point little-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_MULAW, SAMPLE_FMT_S16, pcm_mulaw, "mu-law PCM");
-PCM_CODEC (CODEC_ID_PCM_S8, SAMPLE_FMT_U8, pcm_s8, "signed 8-bit PCM");
-PCM_CODEC (CODEC_ID_PCM_S16BE, SAMPLE_FMT_S16, pcm_s16be, "signed 16-bit big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_S16LE, SAMPLE_FMT_S16, pcm_s16le, "signed 16-bit little-endian PCM");
-PCM_DECODER(CODEC_ID_PCM_S16LE_PLANAR, SAMPLE_FMT_S16, pcm_s16le_planar, "16-bit little-endian planar PCM");
-PCM_CODEC (CODEC_ID_PCM_S24BE, SAMPLE_FMT_S32, pcm_s24be, "signed 24-bit big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_S24DAUD, SAMPLE_FMT_S16, pcm_s24daud, "D-Cinema audio signed 24-bit PCM");
-PCM_CODEC (CODEC_ID_PCM_S24LE, SAMPLE_FMT_S32, pcm_s24le, "signed 24-bit little-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_S32BE, SAMPLE_FMT_S32, pcm_s32be, "signed 32-bit big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_S32LE, SAMPLE_FMT_S32, pcm_s32le, "signed 32-bit little-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_U8, SAMPLE_FMT_U8, pcm_u8, "unsigned 8-bit PCM");
-PCM_CODEC (CODEC_ID_PCM_U16BE, SAMPLE_FMT_S16, pcm_u16be, "unsigned 16-bit big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_U16LE, SAMPLE_FMT_S16, pcm_u16le, "unsigned 16-bit little-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_U24BE, SAMPLE_FMT_S32, pcm_u24be, "unsigned 24-bit big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_U24LE, SAMPLE_FMT_S32, pcm_u24le, "unsigned 24-bit little-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_U32BE, SAMPLE_FMT_S32, pcm_u32be, "unsigned 32-bit big-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_U32LE, SAMPLE_FMT_S32, pcm_u32le, "unsigned 32-bit little-endian PCM");
-PCM_CODEC (CODEC_ID_PCM_ZORK, SAMPLE_FMT_S16, pcm_zork, "Zork PCM");
+PCM_CODEC (CODEC_ID_PCM_ALAW, SAMPLE_FMT_S16, pcm_alaw, "PCM A-law");
+PCM_CODEC (CODEC_ID_PCM_DVD, SAMPLE_FMT_S32, pcm_dvd, "PCM signed 20|24-bit big-endian");
+PCM_CODEC (CODEC_ID_PCM_F32BE, SAMPLE_FMT_FLT, pcm_f32be, "PCM 32-bit floating point big-endian");
+PCM_CODEC (CODEC_ID_PCM_F32LE, SAMPLE_FMT_FLT, pcm_f32le, "PCM 32-bit floating point little-endian");
+PCM_CODEC (CODEC_ID_PCM_F64BE, SAMPLE_FMT_DBL, pcm_f64be, "PCM 64-bit floating point big-endian");
+PCM_CODEC (CODEC_ID_PCM_F64LE, SAMPLE_FMT_DBL, pcm_f64le, "PCM 64-bit floating point little-endian");
+PCM_CODEC (CODEC_ID_PCM_MULAW, SAMPLE_FMT_S16, pcm_mulaw, "PCM mu-law");
+PCM_CODEC (CODEC_ID_PCM_S8, SAMPLE_FMT_U8, pcm_s8, "PCM signed 8-bit");
+PCM_CODEC (CODEC_ID_PCM_S16BE, SAMPLE_FMT_S16, pcm_s16be, "PCM signed 16-bit big-endian");
+PCM_CODEC (CODEC_ID_PCM_S16LE, SAMPLE_FMT_S16, pcm_s16le, "PCM signed 16-bit little-endian");
+PCM_DECODER(CODEC_ID_PCM_S16LE_PLANAR, SAMPLE_FMT_S16, pcm_s16le_planar, "PCM 16-bit little-endian planar");
+PCM_CODEC (CODEC_ID_PCM_S24BE, SAMPLE_FMT_S32, pcm_s24be, "PCM signed 24-bit big-endian");
+PCM_CODEC (CODEC_ID_PCM_S24DAUD, SAMPLE_FMT_S16, pcm_s24daud, "PCM D-Cinema audio signed 24-bit");
+PCM_CODEC (CODEC_ID_PCM_S24LE, SAMPLE_FMT_S32, pcm_s24le, "PCM signed 24-bit little-endian");
+PCM_CODEC (CODEC_ID_PCM_S32BE, SAMPLE_FMT_S32, pcm_s32be, "PCM signed 32-bit big-endian");
+PCM_CODEC (CODEC_ID_PCM_S32LE, SAMPLE_FMT_S32, pcm_s32le, "PCM signed 32-bit little-endian");
+PCM_CODEC (CODEC_ID_PCM_U8, SAMPLE_FMT_U8, pcm_u8, "PCM unsigned 8-bit");
+PCM_CODEC (CODEC_ID_PCM_U16BE, SAMPLE_FMT_S16, pcm_u16be, "PCM unsigned 16-bit big-endian");
+PCM_CODEC (CODEC_ID_PCM_U16LE, SAMPLE_FMT_S16, pcm_u16le, "PCM unsigned 16-bit little-endian");
+PCM_CODEC (CODEC_ID_PCM_U24BE, SAMPLE_FMT_S32, pcm_u24be, "PCM unsigned 24-bit big-endian");
+PCM_CODEC (CODEC_ID_PCM_U24LE, SAMPLE_FMT_S32, pcm_u24le, "PCM unsigned 24-bit little-endian");
+PCM_CODEC (CODEC_ID_PCM_U32BE, SAMPLE_FMT_S32, pcm_u32be, "PCM unsigned 32-bit big-endian");
+PCM_CODEC (CODEC_ID_PCM_U32LE, SAMPLE_FMT_S32, pcm_u32le, "PCM unsigned 32-bit little-endian");
+PCM_CODEC (CODEC_ID_PCM_ZORK, SAMPLE_FMT_S16, pcm_zork, "PCM Zork");
projects / ffmpeg / blobdiff