Replace ASMALIGN() with .p2align
[ffmpeg.git] / libavcodec / pcm.c
index a0ce9f5..533e834 100644 (file)
  */
 
 /**
- * @file libavcodec/pcm.c
+ * @file
  * PCM codecs
  */
 
 #include "avcodec.h"
-#include "get_bits.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;
@@ -154,14 +81,14 @@ static int pcm_encode_frame(AVCodecContext *avctx,
                             unsigned char *frame, int buf_size, void *data)
 {
     int n, sample_size, v;
-    short *samples;
+    const short *samples;
     unsigned char *dst;
-    uint8_t *srcu8;
-    int16_t *samples_int16_t;
-    int32_t *samples_int32_t;
-    int64_t *samples_int64_t;
-    uint16_t *samples_uint16_t;
-    uint32_t *samples_uint32_t;
+    const uint8_t *srcu8;
+    const int16_t *samples_int16_t;
+    const int32_t *samples_int32_t;
+    const int64_t *samples_int64_t;
+    const uint16_t *samples_uint16_t;
+    const uint32_t *samples_uint32_t;
 
     sample_size = av_get_bits_per_sample(avctx->codec->id)/8;
     n = buf_size / sample_size;
@@ -194,8 +121,8 @@ static int pcm_encode_frame(AVCodecContext *avctx,
         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++;
@@ -300,6 +227,10 @@ static av_cold int pcm_decode_init(AVCodecContext * avctx)
     }
 
     avctx->sample_fmt = avctx->codec->sample_fmts[0];
+
+    if (avctx->sample_fmt == AV_SAMPLE_FMT_S32)
+        avctx->bits_per_raw_sample = av_get_bits_per_sample(avctx->codec->id);
+
     return 0;
 }
 
@@ -328,7 +259,7 @@ static int pcm_decode_frame(AVCodecContext *avctx,
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     PCMDecode *s = avctx->priv_data;
-    int sample_size, c, n;
+    int sample_size, c, n, i;
     short *samples;
     const uint8_t *src, *src8, *src2[MAX_CHANNELS];
     uint8_t *dstu8;
@@ -357,6 +288,14 @@ static int pcm_decode_frame(AVCodecContext *avctx,
     if (CODEC_ID_PCM_DVD == avctx->codec_id)
         /* 2 samples are interleaved per block in PCM_DVD */
         sample_size = avctx->bits_per_coded_sample * 2 / 8;
+    else if (avctx->codec_id == CODEC_ID_PCM_LXF)
+        /* we process 40-bit blocks per channel for LXF */
+        sample_size = 5;
+
+    if (sample_size == 0) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid sample_size\n");
+        return AVERROR(EINVAL);
+    }
 
     n = avctx->channels * sample_size;
 
@@ -396,8 +335,8 @@ static int pcm_decode_frame(AVCodecContext *avctx,
         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:
@@ -505,6 +444,26 @@ static int pcm_decode_frame(AVCodecContext *avctx,
         }
         samples = (short *) dst_int32_t;
         break;
+    case CODEC_ID_PCM_LXF:
+        dst_int32_t = data;
+        n /= avctx->channels;
+        //unpack and de-planerize
+        for (i = 0; i < n; i++) {
+            for (c = 0, src8 = src + i*5; c < avctx->channels; c++, src8 += n*5) {
+                //extract low 20 bits and expand to 32 bits
+                *dst_int32_t++ = (src8[2] << 28) | (src8[1] << 20) | (src8[0] << 12) |
+                                 ((src8[2] & 0xF) << 8) | src8[1];
+            }
+
+            for (c = 0, src8 = src + i*5; c < avctx->channels; c++, src8 += n*5) {
+                //extract high 20 bits and expand to 32 bits
+                *dst_int32_t++ = (src8[4] << 24) | (src8[3] << 16) |
+                                 ((src8[2] & 0xF0) << 8) | (src8[4] << 4) | (src8[3] >> 4);
+            }
+        }
+        src += n * avctx->channels * 5;
+        samples = (short *) dst_int32_t;
+        break;
     default:
         return -1;
     }
@@ -513,17 +472,15 @@ static int pcm_decode_frame(AVCodecContext *avctx,
 }
 
 #if CONFIG_ENCODERS
-#define PCM_ENCODER(id,sample_fmt_,name,long_name_) \
-AVCodec name ## _encoder = {                    \
-    #name,                                      \
-    CODEC_TYPE_AUDIO,                           \
-    id,                                         \
-    0,                                          \
-    pcm_encode_init,                            \
-    pcm_encode_frame,                           \
-    pcm_encode_close,                           \
-    NULL,                                       \
-    .sample_fmts = (const enum SampleFormat[]){sample_fmt_,SAMPLE_FMT_NONE}, \
+#define PCM_ENCODER(id_,sample_fmt_,name_,long_name_) \
+AVCodec name_ ## _encoder = {                   \
+    .name        = #name_,                      \
+    .type        = AVMEDIA_TYPE_AUDIO,          \
+    .id          = id_,                         \
+    .init        = pcm_encode_init,             \
+    .encode      = pcm_encode_frame,            \
+    .close       = pcm_encode_close,            \
+    .sample_fmts = (const enum AVSampleFormat[]){sample_fmt_,AV_SAMPLE_FMT_NONE}, \
     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
 };
 #else
@@ -531,17 +488,15 @@ AVCodec name ## _encoder = {                    \
 #endif
 
 #if CONFIG_DECODERS
-#define PCM_DECODER(id,sample_fmt_,name,long_name_)         \
-AVCodec name ## _decoder = {                    \
-    #name,                                      \
-    CODEC_TYPE_AUDIO,                           \
-    id,                                         \
-    sizeof(PCMDecode),                          \
-    pcm_decode_init,                            \
-    NULL,                                       \
-    NULL,                                       \
-    pcm_decode_frame,                           \
-    .sample_fmts = (const enum SampleFormat[]){sample_fmt_,SAMPLE_FMT_NONE}, \
+#define PCM_DECODER(id_,sample_fmt_,name_,long_name_)         \
+AVCodec name_ ## _decoder = {                   \
+    .name           = #name_,                   \
+    .type           = AVMEDIA_TYPE_AUDIO,       \
+    .id             = id_,                      \
+    .priv_data_size = sizeof(PCMDecode),        \
+    .init           = pcm_decode_init,          \
+    .decode         = pcm_decode_frame,         \
+    .sample_fmts = (const enum AVSampleFormat[]){sample_fmt_,AV_SAMPLE_FMT_NONE}, \
     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
 };
 #else
@@ -552,27 +507,28 @@ AVCodec name ## _decoder = {                    \
     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, "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");
+PCM_CODEC  (CODEC_ID_PCM_ALAW,  AV_SAMPLE_FMT_S16, pcm_alaw, "PCM A-law");
+PCM_CODEC  (CODEC_ID_PCM_DVD,   AV_SAMPLE_FMT_S32, pcm_dvd, "PCM signed 20|24-bit big-endian");
+PCM_CODEC  (CODEC_ID_PCM_F32BE, AV_SAMPLE_FMT_FLT, pcm_f32be, "PCM 32-bit floating point big-endian");
+PCM_CODEC  (CODEC_ID_PCM_F32LE, AV_SAMPLE_FMT_FLT, pcm_f32le, "PCM 32-bit floating point little-endian");
+PCM_CODEC  (CODEC_ID_PCM_F64BE, AV_SAMPLE_FMT_DBL, pcm_f64be, "PCM 64-bit floating point big-endian");
+PCM_CODEC  (CODEC_ID_PCM_F64LE, AV_SAMPLE_FMT_DBL, pcm_f64le, "PCM 64-bit floating point little-endian");
+PCM_DECODER(CODEC_ID_PCM_LXF,   AV_SAMPLE_FMT_S32, pcm_lxf, "PCM signed 20-bit little-endian planar");
+PCM_CODEC  (CODEC_ID_PCM_MULAW, AV_SAMPLE_FMT_S16, pcm_mulaw, "PCM mu-law");
+PCM_CODEC  (CODEC_ID_PCM_S8,    AV_SAMPLE_FMT_U8,  pcm_s8, "PCM signed 8-bit");
+PCM_CODEC  (CODEC_ID_PCM_S16BE, AV_SAMPLE_FMT_S16, pcm_s16be, "PCM signed 16-bit big-endian");
+PCM_CODEC  (CODEC_ID_PCM_S16LE, AV_SAMPLE_FMT_S16, pcm_s16le, "PCM signed 16-bit little-endian");
+PCM_DECODER(CODEC_ID_PCM_S16LE_PLANAR, AV_SAMPLE_FMT_S16, pcm_s16le_planar, "PCM 16-bit little-endian planar");
+PCM_CODEC  (CODEC_ID_PCM_S24BE, AV_SAMPLE_FMT_S32, pcm_s24be, "PCM signed 24-bit big-endian");
+PCM_CODEC  (CODEC_ID_PCM_S24DAUD, AV_SAMPLE_FMT_S16,  pcm_s24daud, "PCM D-Cinema audio signed 24-bit");
+PCM_CODEC  (CODEC_ID_PCM_S24LE, AV_SAMPLE_FMT_S32, pcm_s24le, "PCM signed 24-bit little-endian");
+PCM_CODEC  (CODEC_ID_PCM_S32BE, AV_SAMPLE_FMT_S32, pcm_s32be, "PCM signed 32-bit big-endian");
+PCM_CODEC  (CODEC_ID_PCM_S32LE, AV_SAMPLE_FMT_S32, pcm_s32le, "PCM signed 32-bit little-endian");
+PCM_CODEC  (CODEC_ID_PCM_U8,    AV_SAMPLE_FMT_U8,  pcm_u8, "PCM unsigned 8-bit");
+PCM_CODEC  (CODEC_ID_PCM_U16BE, AV_SAMPLE_FMT_S16, pcm_u16be, "PCM unsigned 16-bit big-endian");
+PCM_CODEC  (CODEC_ID_PCM_U16LE, AV_SAMPLE_FMT_S16, pcm_u16le, "PCM unsigned 16-bit little-endian");
+PCM_CODEC  (CODEC_ID_PCM_U24BE, AV_SAMPLE_FMT_S32, pcm_u24be, "PCM unsigned 24-bit big-endian");
+PCM_CODEC  (CODEC_ID_PCM_U24LE, AV_SAMPLE_FMT_S32, pcm_u24le, "PCM unsigned 24-bit little-endian");
+PCM_CODEC  (CODEC_ID_PCM_U32BE, AV_SAMPLE_FMT_S32, pcm_u32be, "PCM unsigned 32-bit big-endian");
+PCM_CODEC  (CODEC_ID_PCM_U32LE, AV_SAMPLE_FMT_S32, pcm_u32le, "PCM unsigned 32-bit little-endian");
+PCM_CODEC  (CODEC_ID_PCM_ZORK,  AV_SAMPLE_FMT_S16, pcm_zork, "PCM Zork");