* PCM codecs
*/
-#include "avcodec.h"
#include "libavutil/common.h" /* for av_reverse */
+#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "pcm_tablegen.h"
static av_cold int pcm_encode_init(AVCodecContext *avctx)
{
avctx->frame_size = 0;
- switch(avctx->codec->id) {
+ switch (avctx->codec->id) {
case CODEC_ID_PCM_ALAW:
pcm_alaw_tableinit();
break;
}
avctx->bits_per_coded_sample = av_get_bits_per_sample(avctx->codec->id);
- avctx->block_align = avctx->channels * avctx->bits_per_coded_sample/8;
- avctx->coded_frame= avcodec_alloc_frame();
+ avctx->block_align = avctx->channels * avctx->bits_per_coded_sample / 8;
+ avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame)
return AVERROR(ENOMEM);
/**
* Write PCM samples macro
- * @param type Datatype of native machine format
+ * @param type Datatype of native machine format
* @param endian bytestream_put_xxx() suffix
- * @param src Source pointer (variable name)
- * @param dst Destination pointer (variable name)
- * @param n Total number of samples (variable name)
- * @param shift Bitshift (bits)
+ * @param src Source pointer (variable name)
+ * @param dst Destination pointer (variable name)
+ * @param n Total number of samples (variable name)
+ * @param shift Bitshift (bits)
* @param offset Sample value offset
*/
-#define ENCODE(type, endian, src, dst, n, shift, offset) \
- samples_##type = (const type*) src; \
- for(;n>0;n--) { \
- register type v = (*samples_##type++ >> shift) + offset; \
- bytestream_put_##endian(&dst, v); \
+#define ENCODE(type, endian, src, dst, n, shift, offset) \
+ samples_ ## type = (const type *) src; \
+ for (; n > 0; n--) { \
+ register type v = (*samples_ ## type++ >> shift) + offset; \
+ bytestream_put_ ## endian(&dst, v); \
}
static int pcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
const uint16_t *samples_uint16_t;
const uint32_t *samples_uint32_t;
- sample_size = av_get_bits_per_sample(avctx->codec->id)/8;
+ sample_size = av_get_bits_per_sample(avctx->codec->id) / 8;
n = frame->nb_samples * avctx->channels;
samples = (const short *)frame->data[0];
- if ((ret = ff_alloc_packet(avpkt, n * sample_size))) {
- av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
+ if ((ret = ff_alloc_packet2(avctx, avpkt, n * sample_size)))
return ret;
- }
dst = avpkt->data;
- switch(avctx->codec->id) {
+ switch (avctx->codec->id) {
case CODEC_ID_PCM_U32LE:
ENCODE(uint32_t, le32, samples, dst, n, 0, 0x80000000)
break;
ENCODE(uint32_t, be24, samples, dst, n, 8, 0x800000)
break;
case CODEC_ID_PCM_S24DAUD:
- for(;n>0;n--) {
+ for (; n > 0; n--) {
uint32_t tmp = av_reverse[(*samples >> 8) & 0xff] +
(av_reverse[*samples & 0xff] << 8);
tmp <<= 4; // sync flags would go here
break;
case CODEC_ID_PCM_S8:
srcu8 = frame->data[0];
- for(;n>0;n--) {
- v = *srcu8++;
+ for (; n > 0; n--) {
+ v = *srcu8++;
*dst++ = v - 128;
}
break;
case CODEC_ID_PCM_S16LE:
#endif /* HAVE_BIGENDIAN */
case CODEC_ID_PCM_U8:
- memcpy(dst, samples, n*sample_size);
- dst += n*sample_size;
+ memcpy(dst, samples, n * sample_size);
+ dst += n * sample_size;
break;
case CODEC_ID_PCM_ALAW:
- for(;n>0;n--) {
- v = *samples++;
+ for (; n > 0; n--) {
+ v = *samples++;
*dst++ = linear_to_alaw[(v + 32768) >> 2];
}
break;
case CODEC_ID_PCM_MULAW:
- for(;n>0;n--) {
- v = *samples++;
+ for (; n > 0; n--) {
+ v = *samples++;
*dst++ = linear_to_ulaw[(v + 32768) >> 2];
}
break;
typedef struct PCMDecode {
AVFrame frame;
- short table[256];
+ short table[256];
} PCMDecode;
-static av_cold int pcm_decode_init(AVCodecContext * avctx)
+static av_cold int pcm_decode_init(AVCodecContext *avctx)
{
PCMDecode *s = avctx->priv_data;
int i;
return AVERROR(EINVAL);
}
- switch(avctx->codec->id) {
+ switch (avctx->codec->id) {
case CODEC_ID_PCM_ALAW:
- for(i=0;i<256;i++)
+ for (i = 0; i < 256; i++)
s->table[i] = alaw2linear(i);
break;
case CODEC_ID_PCM_MULAW:
- for(i=0;i<256;i++)
+ for (i = 0; i < 256; i++)
s->table[i] = ulaw2linear(i);
break;
default:
/**
* Read PCM samples macro
- * @param size Data size of native machine format
+ * @param size Data size of native machine format
* @param endian bytestream_get_xxx() endian suffix
- * @param src Source pointer (variable name)
- * @param dst Destination pointer (variable name)
- * @param n Total number of samples (variable name)
- * @param shift Bitshift (bits)
+ * @param src Source pointer (variable name)
+ * @param dst Destination pointer (variable name)
+ * @param n Total number of samples (variable name)
+ * @param shift Bitshift (bits)
* @param offset Sample value offset
*/
-#define DECODE(size, endian, src, dst, n, shift, offset) \
- for(;n>0;n--) { \
- uint##size##_t v = bytestream_get_##endian(&src); \
- AV_WN##size##A(dst, (v - offset) << shift); \
- dst += size / 8; \
+#define DECODE(size, endian, src, dst, n, shift, offset) \
+ for (; n > 0; n--) { \
+ uint ## size ## _t v = bytestream_get_ ## endian(&src); \
+ AV_WN ## size ## A(dst, (v - offset) << shift); \
+ dst += size / 8; \
}
static int pcm_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *src = avpkt->data;
- int buf_size = avpkt->size;
- PCMDecode *s = avctx->priv_data;
+ int buf_size = avpkt->size;
+ PCMDecode *s = avctx->priv_data;
int sample_size, c, n, ret, samples_per_block;
uint8_t *samples;
int32_t *dst_int32_t;
- sample_size = av_get_bits_per_sample(avctx->codec_id)/8;
+ sample_size = av_get_bits_per_sample(avctx->codec_id) / 8;
/* av_get_bits_per_sample returns 0 for CODEC_ID_PCM_DVD */
samples_per_block = 1;
}
/* 2 samples are interleaved per block in PCM_DVD */
samples_per_block = 2;
- sample_size = avctx->bits_per_coded_sample * 2 / 8;
+ 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 */
samples_per_block = 2;
- sample_size = 5;
+ sample_size = 5;
}
if (sample_size == 0) {
n = avctx->channels * sample_size;
- if(n && buf_size % n){
+ if (n && buf_size % n) {
if (buf_size < n) {
av_log(avctx, AV_LOG_ERROR, "invalid PCM packet\n");
return -1;
- }else
+ } else
buf_size -= buf_size % n;
}
- n = buf_size/sample_size;
+ n = buf_size / sample_size;
/* get output buffer */
s->frame.nb_samples = n * samples_per_block / avctx->channels;
}
samples = s->frame.data[0];
- switch(avctx->codec->id) {
+ switch (avctx->codec->id) {
case CODEC_ID_PCM_U32LE:
DECODE(32, le32, src, samples, n, 0, 0x80000000)
break;
DECODE(32, be24, src, samples, n, 8, 0x800000)
break;
case CODEC_ID_PCM_S24DAUD:
- for(;n>0;n--) {
- uint32_t v = bytestream_get_be24(&src);
- v >>= 4; // sync flags are here
- AV_WN16A(samples, av_reverse[(v >> 8) & 0xff] +
- (av_reverse[v & 0xff] << 8));
- samples += 2;
+ for (; n > 0; n--) {
+ uint32_t v = bytestream_get_be24(&src);
+ v >>= 4; // sync flags are here
+ AV_WN16A(samples, av_reverse[(v >> 8) & 0xff] +
+ (av_reverse[v & 0xff] << 8));
+ samples += 2;
}
break;
case CODEC_ID_PCM_S16LE_PLANAR:
{
- const uint8_t *src2[MAX_CHANNELS];
+ int i;
n /= avctx->channels;
- for(c=0;c<avctx->channels;c++)
- src2[c] = &src[c*n*2];
- for(;n>0;n--)
- for(c=0;c<avctx->channels;c++) {
- AV_WN16A(samples, bytestream_get_le16(&src2[c]));
+ for (c = 0; c < avctx->channels; c++) {
+ samples = s->frame.data[c];
+ for (i = n; i > 0; i--) {
+ AV_WN16A(samples, bytestream_get_le16(&src));
samples += 2;
}
+ }
break;
}
case CODEC_ID_PCM_U16LE:
DECODE(16, be16, src, samples, n, 0, 0x8000)
break;
case CODEC_ID_PCM_S8:
- for(;n>0;n--) {
+ for (; n > 0; n--)
*samples++ = *src++ + 128;
- }
break;
#if HAVE_BIGENDIAN
case CODEC_ID_PCM_F64LE:
case CODEC_ID_PCM_S16LE:
#endif /* HAVE_BIGENDIAN */
case CODEC_ID_PCM_U8:
- memcpy(samples, src, n*sample_size);
+ memcpy(samples, src, n * sample_size);
break;
case CODEC_ID_PCM_ZORK:
for (; n > 0; n--) {
break;
case CODEC_ID_PCM_ALAW:
case CODEC_ID_PCM_MULAW:
- for(;n>0;n--) {
+ for (; n > 0; n--) {
AV_WN16A(samples, s->table[*src++]);
samples += 2;
}
switch (avctx->bits_per_coded_sample) {
case 20:
while (n--) {
- c = avctx->channels;
- src8 = src + 4*c;
+ c = avctx->channels;
+ src8 = src + 4 * c;
while (c--) {
- *dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8 &0xf0) << 8);
- *dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++ &0x0f) << 12);
+ *dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8 & 0xf0) << 8);
+ *dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++ & 0x0f) << 12);
}
src = src8;
}
break;
case 24:
while (n--) {
- c = avctx->channels;
- src8 = src + 4*c;
+ c = avctx->channels;
+ src8 = src + 4 * c;
while (c--) {
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++) << 8);
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++) << 8);
case CODEC_ID_PCM_LXF:
{
int i;
- const uint8_t *src8;
- dst_int32_t = (int32_t *)s->frame.data[0];
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) {
+ //unpack
+ for (c = 0; c < avctx->channels; c++) {
+ dst_int32_t = (int32_t *)s->frame.data[c];
+ for (i = 0; i < n; i++) {
//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) {
+ *dst_int32_t++ = (src[2] << 28) |
+ (src[1] << 20) |
+ (src[0] << 12) |
+ ((src[2] & 0xF) << 8) |
+ src[1];
//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);
+ *dst_int32_t++ = (src[4] << 24) |
+ (src[3] << 16) |
+ ((src[2] & 0xF0) << 8) |
+ (src[4] << 4) |
+ (src[3] >> 4);
+ src += 5;
}
}
break;
}
#if CONFIG_ENCODERS
-#define PCM_ENCODER(id_,sample_fmt_,name_,long_name_) \
-AVCodec ff_ ## name_ ## _encoder = { \
- .name = #name_, \
- .type = AVMEDIA_TYPE_AUDIO, \
- .id = id_, \
- .init = pcm_encode_init, \
- .encode2 = pcm_encode_frame, \
- .close = pcm_encode_close, \
- .capabilities = CODEC_CAP_VARIABLE_FRAME_SIZE, \
- .sample_fmts = (const enum AVSampleFormat[]){sample_fmt_,AV_SAMPLE_FMT_NONE}, \
- .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
+#define PCM_ENCODER(id_, sample_fmt_, name_, long_name_) \
+AVCodec ff_ ## name_ ## _encoder = { \
+ .name = #name_, \
+ .type = AVMEDIA_TYPE_AUDIO, \
+ .id = id_, \
+ .init = pcm_encode_init, \
+ .encode2 = pcm_encode_frame, \
+ .close = pcm_encode_close, \
+ .capabilities = CODEC_CAP_VARIABLE_FRAME_SIZE, \
+ .sample_fmts = (const enum AVSampleFormat[]){ sample_fmt_, \
+ AV_SAMPLE_FMT_NONE }, \
+ .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
}
#else
-#define PCM_ENCODER(id,sample_fmt_,name,long_name_)
+#define PCM_ENCODER(id, sample_fmt_, name, long_name_)
#endif
#if CONFIG_DECODERS
-#define PCM_DECODER(id_,sample_fmt_,name_,long_name_) \
-AVCodec ff_ ## name_ ## _decoder = { \
- .name = #name_, \
- .type = AVMEDIA_TYPE_AUDIO, \
- .id = id_, \
- .priv_data_size = sizeof(PCMDecode), \
- .init = pcm_decode_init, \
- .decode = pcm_decode_frame, \
- .capabilities = CODEC_CAP_DR1, \
- .sample_fmts = (const enum AVSampleFormat[]){sample_fmt_,AV_SAMPLE_FMT_NONE}, \
- .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
+#define PCM_DECODER(id_, sample_fmt_, name_, long_name_) \
+AVCodec ff_ ## name_ ## _decoder = { \
+ .name = #name_, \
+ .type = AVMEDIA_TYPE_AUDIO, \
+ .id = id_, \
+ .priv_data_size = sizeof(PCMDecode), \
+ .init = pcm_decode_init, \
+ .decode = pcm_decode_frame, \
+ .capabilities = CODEC_CAP_DR1, \
+ .sample_fmts = (const enum AVSampleFormat[]){ sample_fmt_, \
+ AV_SAMPLE_FMT_NONE }, \
+ .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
}
#else
-#define PCM_DECODER(id,sample_fmt_,name,long_name_)
+#define PCM_DECODER(id, sample_fmt_, name, long_name_)
#endif
-#define PCM_CODEC(id, sample_fmt_, name, long_name_) \
- PCM_ENCODER(id,sample_fmt_,name,long_name_); PCM_DECODER(id,sample_fmt_,name,long_name_)
+#define PCM_CODEC(id, sample_fmt_, name, long_name_) \
+ 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, AV_SAMPLE_FMT_S16, pcm_alaw, "PCM A-law / G.711 A-law");
-PCM_DECODER(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 / G.711 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_DECODER(CODEC_ID_PCM_ZORK, AV_SAMPLE_FMT_U8, pcm_zork, "PCM Zork");
+PCM_CODEC (CODEC_ID_PCM_ALAW, AV_SAMPLE_FMT_S16, pcm_alaw, "PCM A-law / G.711 A-law");
+PCM_DECODER(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_S32P,pcm_lxf, "PCM signed 20-bit little-endian planar");
+PCM_CODEC (CODEC_ID_PCM_MULAW, AV_SAMPLE_FMT_S16, pcm_mulaw, "PCM mu-law / G.711 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_S16P,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_DECODER(CODEC_ID_PCM_ZORK, AV_SAMPLE_FMT_U8, pcm_zork, "PCM Zork");
+