/*
* PCM codecs
- * Copyright (c) 2001 Fabrice Bellard.
+ * Copyright (c) 2001 Fabrice Bellard
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "avcodec.h"
-
-/* 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
- *
+/**
+ * @file
+ * PCM codecs
*/
-static int alaw2linear(unsigned char a_val)
-{
- int t;
- int seg;
-
- a_val ^= 0x55;
-
- t = (a_val & QUANT_MASK) << 4;
- seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT;
- switch (seg) {
- case 0:
- t += 8;
- break;
- case 1:
- t += 0x108;
- break;
- default:
- t += 0x108;
- t <<= seg - 1;
- }
- return ((a_val & SIGN_BIT) ? t : -t);
-}
-
-static 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 *linear_to_alaw = NULL;
-static int linear_to_alaw_ref = 0;
-
-static UINT8 *linear_to_ulaw = NULL;
-static int linear_to_ulaw_ref = 0;
-
-static void build_xlaw_table(UINT8 *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];
-}
+#include "libavutil/attributes.h"
+#include "avcodec.h"
+#include "bytestream.h"
+#include "internal.h"
+#include "mathops.h"
+#include "pcm_tablegen.h"
-static int encode_init(AVCodecContext *avctx)
+static av_cold int pcm_encode_init(AVCodecContext *avctx)
{
- avctx->frame_size = 1;
- switch(avctx->codec->id) {
- case CODEC_ID_PCM_ALAW:
- if (linear_to_alaw_ref == 0) {
- linear_to_alaw = av_malloc(16384);
- if (!linear_to_alaw)
- return -1;
- build_xlaw_table(linear_to_alaw, alaw2linear, 0xd5);
- }
- linear_to_alaw_ref++;
- break;
- case CODEC_ID_PCM_MULAW:
- if (linear_to_ulaw_ref == 0) {
- linear_to_ulaw = av_malloc(16384);
- if (!linear_to_ulaw)
- return -1;
- build_xlaw_table(linear_to_ulaw, ulaw2linear, 0xff);
- }
- linear_to_ulaw_ref++;
+ avctx->frame_size = 0;
+ switch (avctx->codec->id) {
+ case AV_CODEC_ID_PCM_ALAW:
+ pcm_alaw_tableinit();
+ break;
+ case AV_CODEC_ID_PCM_MULAW:
+ pcm_ulaw_tableinit();
break;
default:
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->bit_rate = avctx->block_align * avctx->sample_rate * 8;
+
return 0;
}
-static int encode_close(AVCodecContext *avctx)
-{
- switch(avctx->codec->id) {
- case CODEC_ID_PCM_ALAW:
- if (--linear_to_alaw_ref == 0)
- av_free(linear_to_alaw);
- break;
- case CODEC_ID_PCM_MULAW:
- if (--linear_to_ulaw_ref == 0)
- av_free(linear_to_ulaw);
- break;
- default:
- /* nothing to free */
- break;
+/**
+ * Write PCM samples macro
+ * @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 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); \
}
- return 0;
-}
-static int encode_frame(AVCodecContext *avctx,
- unsigned char *frame, int buf_size, void *data)
+static int pcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
+ const AVFrame *frame, int *got_packet_ptr)
{
- int n, sample_size, v;
- short *samples;
+ int n, sample_size, v, ret;
+ const short *samples;
unsigned char *dst;
+ 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;
- switch(avctx->codec->id) {
- case CODEC_ID_PCM_S16LE:
- case CODEC_ID_PCM_S16BE:
- case CODEC_ID_PCM_U16LE:
- case CODEC_ID_PCM_U16BE:
- sample_size = 2;
+ 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");
+ return ret;
+ }
+ dst = avpkt->data;
+
+ switch (avctx->codec->id) {
+ case AV_CODEC_ID_PCM_U32LE:
+ ENCODE(uint32_t, le32, samples, dst, n, 0, 0x80000000)
break;
- default:
- sample_size = 1;
+ case AV_CODEC_ID_PCM_U32BE:
+ ENCODE(uint32_t, be32, samples, dst, n, 0, 0x80000000)
break;
- }
- n = buf_size / sample_size;
- samples = data;
- dst = frame;
-
- switch(avctx->codec->id) {
- case CODEC_ID_PCM_S16LE:
- for(;n>0;n--) {
- v = *samples++;
- dst[0] = v & 0xff;
- dst[1] = v >> 8;
- dst += 2;
- }
+ case AV_CODEC_ID_PCM_S24LE:
+ ENCODE(int32_t, le24, samples, dst, n, 8, 0)
break;
- case CODEC_ID_PCM_S16BE:
- for(;n>0;n--) {
- v = *samples++;
- dst[0] = v >> 8;
- dst[1] = v;
- dst += 2;
- }
+ case AV_CODEC_ID_PCM_S24BE:
+ ENCODE(int32_t, be24, samples, dst, n, 8, 0)
break;
- case CODEC_ID_PCM_U16LE:
- for(;n>0;n--) {
- v = *samples++;
- v += 0x8000;
- dst[0] = v & 0xff;
- dst[1] = v >> 8;
- dst += 2;
- }
+ case AV_CODEC_ID_PCM_U24LE:
+ ENCODE(uint32_t, le24, samples, dst, n, 8, 0x800000)
break;
- case CODEC_ID_PCM_U16BE:
- for(;n>0;n--) {
- v = *samples++;
- v += 0x8000;
- dst[0] = v >> 8;
- dst[1] = v;
- dst += 2;
- }
+ case AV_CODEC_ID_PCM_U24BE:
+ ENCODE(uint32_t, be24, samples, dst, n, 8, 0x800000)
break;
- case CODEC_ID_PCM_S8:
- for(;n>0;n--) {
- v = *samples++;
- dst[0] = (v + 128) >> 8;
- dst++;
+ case AV_CODEC_ID_PCM_S24DAUD:
+ for (; n > 0; n--) {
+ uint32_t tmp = ff_reverse[(*samples >> 8) & 0xff] +
+ (ff_reverse[*samples & 0xff] << 8);
+ tmp <<= 4; // sync flags would go here
+ bytestream_put_be24(&dst, tmp);
+ samples++;
}
break;
- case CODEC_ID_PCM_U8:
- for(;n>0;n--) {
- v = *samples++;
- dst[0] = ((v + 128) >> 8) + 128;
- dst++;
+ case AV_CODEC_ID_PCM_U16LE:
+ ENCODE(uint16_t, le16, samples, dst, n, 0, 0x8000)
+ break;
+ case AV_CODEC_ID_PCM_U16BE:
+ ENCODE(uint16_t, be16, samples, dst, n, 0, 0x8000)
+ break;
+ case AV_CODEC_ID_PCM_S8:
+ srcu8 = frame->data[0];
+ for (; n > 0; n--) {
+ v = *srcu8++;
+ *dst++ = v - 128;
}
break;
- case CODEC_ID_PCM_ALAW:
- for(;n>0;n--) {
- v = *samples++;
- dst[0] = linear_to_alaw[(v + 32768) >> 2];
- dst++;
+#if HAVE_BIGENDIAN
+ case AV_CODEC_ID_PCM_F64LE:
+ ENCODE(int64_t, le64, samples, dst, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_S32LE:
+ case AV_CODEC_ID_PCM_F32LE:
+ ENCODE(int32_t, le32, samples, dst, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_S16LE:
+ ENCODE(int16_t, le16, samples, dst, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_F64BE:
+ case AV_CODEC_ID_PCM_F32BE:
+ case AV_CODEC_ID_PCM_S32BE:
+ case AV_CODEC_ID_PCM_S16BE:
+#else
+ case AV_CODEC_ID_PCM_F64BE:
+ ENCODE(int64_t, be64, samples, dst, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_F32BE:
+ case AV_CODEC_ID_PCM_S32BE:
+ ENCODE(int32_t, be32, samples, dst, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_S16BE:
+ ENCODE(int16_t, be16, samples, dst, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_F64LE:
+ case AV_CODEC_ID_PCM_F32LE:
+ case AV_CODEC_ID_PCM_S32LE:
+ case AV_CODEC_ID_PCM_S16LE:
+#endif /* HAVE_BIGENDIAN */
+ case AV_CODEC_ID_PCM_U8:
+ memcpy(dst, samples, n * sample_size);
+ dst += n * sample_size;
+ break;
+ case AV_CODEC_ID_PCM_ALAW:
+ 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++;
- dst[0] = linear_to_ulaw[(v + 32768) >> 2];
- dst++;
+ case AV_CODEC_ID_PCM_MULAW:
+ for (; n > 0; n--) {
+ v = *samples++;
+ *dst++ = linear_to_ulaw[(v + 32768) >> 2];
}
break;
default:
return -1;
}
- avctx->key_frame = 1;
- //avctx->frame_size = (dst - frame) / (sample_size * avctx->channels);
- return dst - frame;
+ *got_packet_ptr = 1;
+ return 0;
}
typedef struct PCMDecode {
- short table[256];
+ short table[256];
} PCMDecode;
-static int decode_init(AVCodecContext * avctx)
+static av_cold int pcm_decode_init(AVCodecContext *avctx)
{
PCMDecode *s = avctx->priv_data;
int i;
- switch(avctx->codec->id) {
- case CODEC_ID_PCM_ALAW:
- for(i=0;i<256;i++)
+ if (avctx->channels <= 0) {
+ av_log(avctx, AV_LOG_ERROR, "PCM channels out of bounds\n");
+ return AVERROR(EINVAL);
+ }
+
+ switch (avctx->codec->id) {
+ case AV_CODEC_ID_PCM_ALAW:
+ for (i = 0; i < 256; i++)
s->table[i] = alaw2linear(i);
break;
- case CODEC_ID_PCM_MULAW:
- for(i=0;i<256;i++)
+ case AV_CODEC_ID_PCM_MULAW:
+ for (i = 0; i < 256; i++)
s->table[i] = ulaw2linear(i);
break;
default:
break;
}
+
+ 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;
}
-static int decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- UINT8 *buf, int buf_size)
+/**
+ * Read PCM samples macro
+ * @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 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; \
+ }
+
+#if HAVE_BIGENDIAN
+#define DECODE_PLANAR(size, endian, src, dst, n, shift, offset) \
+ { \
+ int n2; \
+ n /= avctx->channels; \
+ for (c = 0; c < avctx->channels; c++) { \
+ samples = frame->extended_data[c]; \
+ n2 = n; \
+ DECODE(size, endian, src, samples, n2, 0, 0) \
+ } \
+ }
+#else
+#define DECODE_PLANAR(size, endian, src, dst, n, shift, offset) \
+ { \
+ n /= avctx->channels; \
+ for (c = 0; c < avctx->channels; c++) { \
+ samples = frame->extended_data[c]; \
+ memcpy(samples, src, n * size / 8); \
+ src += n * size / 8; \
+ } \
+ }
+#endif /* HAVE_BIGENDIAN */
+
+static int pcm_decode_frame(AVCodecContext *avctx, void *data,
+ int *got_frame_ptr, AVPacket *avpkt)
{
- PCMDecode *s = avctx->priv_data;
- int n;
- short *samples;
- UINT8 *src;
-
- samples = data;
- src = buf;
-
- switch(avctx->codec->id) {
- case CODEC_ID_PCM_S16LE:
- n = buf_size >> 1;
- for(;n>0;n--) {
- *samples++ = src[0] | (src[1] << 8);
- src += 2;
- }
+ const uint8_t *src = avpkt->data;
+ int buf_size = avpkt->size;
+ PCMDecode *s = avctx->priv_data;
+ AVFrame *frame = 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;
+
+ /* av_get_bits_per_sample returns 0 for AV_CODEC_ID_PCM_DVD */
+ samples_per_block = 1;
+ if (avctx->codec_id == AV_CODEC_ID_PCM_LXF) {
+ /* we process 40-bit blocks per channel for LXF */
+ samples_per_block = 2;
+ 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;
+
+ if (n && buf_size % n) {
+ if (buf_size < n) {
+ av_log(avctx, AV_LOG_ERROR, "invalid PCM packet\n");
+ return -1;
+ } else
+ buf_size -= buf_size % n;
+ }
+
+ n = buf_size / sample_size;
+
+ /* get output buffer */
+ frame->nb_samples = n * samples_per_block / avctx->channels;
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
+ }
+ samples = frame->data[0];
+
+ switch (avctx->codec->id) {
+ case AV_CODEC_ID_PCM_U32LE:
+ DECODE(32, le32, src, samples, n, 0, 0x80000000)
break;
- case CODEC_ID_PCM_S16BE:
- n = buf_size >> 1;
- for(;n>0;n--) {
- *samples++ = (src[0] << 8) | src[1];
- src += 2;
- }
+ case AV_CODEC_ID_PCM_U32BE:
+ DECODE(32, be32, src, samples, n, 0, 0x80000000)
break;
- case CODEC_ID_PCM_U16LE:
- n = buf_size >> 1;
- for(;n>0;n--) {
- *samples++ = (src[0] | (src[1] << 8)) - 0x8000;
- src += 2;
- }
+ case AV_CODEC_ID_PCM_S24LE:
+ DECODE(32, le24, src, samples, n, 8, 0)
+ break;
+ case AV_CODEC_ID_PCM_S24BE:
+ DECODE(32, be24, src, samples, n, 8, 0)
+ break;
+ case AV_CODEC_ID_PCM_U24LE:
+ DECODE(32, le24, src, samples, n, 8, 0x800000)
+ break;
+ case AV_CODEC_ID_PCM_U24BE:
+ DECODE(32, be24, src, samples, n, 8, 0x800000)
break;
- case CODEC_ID_PCM_U16BE:
- n = buf_size >> 1;
- for(;n>0;n--) {
- *samples++ = ((src[0] << 8) | src[1]) - 0x8000;
- src += 2;
+ case AV_CODEC_ID_PCM_S24DAUD:
+ for (; n > 0; n--) {
+ uint32_t v = bytestream_get_be24(&src);
+ v >>= 4; // sync flags are here
+ AV_WN16A(samples, ff_reverse[(v >> 8) & 0xff] +
+ (ff_reverse[v & 0xff] << 8));
+ samples += 2;
}
break;
- case CODEC_ID_PCM_S8:
- n = buf_size;
- for(;n>0;n--) {
- *samples++ = src[0] << 8;
- src++;
+ case AV_CODEC_ID_PCM_S16BE_PLANAR:
+ DECODE_PLANAR(16, be16, src, samples, n, 0, 0);
+ break;
+ case AV_CODEC_ID_PCM_S16LE_PLANAR:
+ DECODE_PLANAR(16, le16, src, samples, n, 0, 0);
+ break;
+ case AV_CODEC_ID_PCM_S24LE_PLANAR:
+ DECODE_PLANAR(32, le24, src, samples, n, 8, 0);
+ break;
+ case AV_CODEC_ID_PCM_S32LE_PLANAR:
+ DECODE_PLANAR(32, le32, src, samples, n, 0, 0);
+ break;
+ case AV_CODEC_ID_PCM_U16LE:
+ DECODE(16, le16, src, samples, n, 0, 0x8000)
+ break;
+ case AV_CODEC_ID_PCM_U16BE:
+ DECODE(16, be16, src, samples, n, 0, 0x8000)
+ break;
+ case AV_CODEC_ID_PCM_S8:
+ for (; n > 0; n--)
+ *samples++ = *src++ + 128;
+ break;
+#if HAVE_BIGENDIAN
+ case AV_CODEC_ID_PCM_F64LE:
+ DECODE(64, le64, src, samples, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_S32LE:
+ case AV_CODEC_ID_PCM_F32LE:
+ DECODE(32, le32, src, samples, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_S16LE:
+ DECODE(16, le16, src, samples, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_F64BE:
+ case AV_CODEC_ID_PCM_F32BE:
+ case AV_CODEC_ID_PCM_S32BE:
+ case AV_CODEC_ID_PCM_S16BE:
+#else
+ case AV_CODEC_ID_PCM_F64BE:
+ DECODE(64, be64, src, samples, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_F32BE:
+ case AV_CODEC_ID_PCM_S32BE:
+ DECODE(32, be32, src, samples, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_S16BE:
+ DECODE(16, be16, src, samples, n, 0, 0)
+ break;
+ case AV_CODEC_ID_PCM_F64LE:
+ case AV_CODEC_ID_PCM_F32LE:
+ case AV_CODEC_ID_PCM_S32LE:
+ case AV_CODEC_ID_PCM_S16LE:
+#endif /* HAVE_BIGENDIAN */
+ case AV_CODEC_ID_PCM_U8:
+ memcpy(samples, src, n * sample_size);
+ break;
+ case AV_CODEC_ID_PCM_ZORK:
+ for (; n > 0; n--) {
+ int v = *src++;
+ if (v < 128)
+ v = 128 - v;
+ *samples++ = v;
}
break;
- case CODEC_ID_PCM_U8:
- n = buf_size;
- for(;n>0;n--) {
- *samples++ = ((int)src[0] - 128) << 8;
- src++;
+ case AV_CODEC_ID_PCM_ALAW:
+ case AV_CODEC_ID_PCM_MULAW:
+ for (; n > 0; n--) {
+ AV_WN16A(samples, s->table[*src++]);
+ samples += 2;
}
break;
- case CODEC_ID_PCM_ALAW:
- case CODEC_ID_PCM_MULAW:
- n = buf_size;
- for(;n>0;n--) {
- *samples++ = s->table[src[0]];
- src++;
+ case AV_CODEC_ID_PCM_LXF:
+ {
+ int i;
+ n /= avctx->channels;
+ for (c = 0; c < avctx->channels; c++) {
+ dst_int32_t = (int32_t *)frame->extended_data[c];
+ for (i = 0; i < n; i++) {
+ // extract low 20 bits and expand to 32 bits
+ *dst_int32_t++ = (src[2] << 28) |
+ (src[1] << 20) |
+ (src[0] << 12) |
+ ((src[2] & 0x0F) << 8) |
+ src[1];
+ // extract high 20 bits and expand to 32 bits
+ *dst_int32_t++ = (src[4] << 24) |
+ (src[3] << 16) |
+ ((src[2] & 0xF0) << 8) |
+ (src[4] << 4) |
+ (src[3] >> 4);
+ src += 5;
+ }
}
break;
+ }
default:
- *data_size = 0;
return -1;
}
- *data_size = (UINT8 *)samples - (UINT8 *)data;
- return src - buf;
+
+ *got_frame_ptr = 1;
+
+ return buf_size;
}
-#define PCM_CODEC(id, name) \
-AVCodec name ## _encoder = { \
- #name, \
- CODEC_TYPE_AUDIO, \
- id, \
- 0, \
- encode_init, \
- encode_frame, \
- encode_close, \
- NULL, \
-}; \
-AVCodec name ## _decoder = { \
- #name, \
- CODEC_TYPE_AUDIO, \
- id, \
- sizeof(PCMDecode), \
- decode_init, \
- NULL, \
- NULL, \
- decode_frame, \
-};
-
-PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
-PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
-PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
-PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
-PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
-PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
-PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
-PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
+#define PCM_ENCODER_0(id_, sample_fmt_, name_, long_name_)
+#define PCM_ENCODER_1(id_, sample_fmt_, name_, long_name_) \
+AVCodec ff_ ## name_ ## _encoder = { \
+ .name = #name_, \
+ .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
+ .type = AVMEDIA_TYPE_AUDIO, \
+ .id = AV_CODEC_ID_ ## id_, \
+ .init = pcm_encode_init, \
+ .encode2 = pcm_encode_frame, \
+ .capabilities = AV_CODEC_CAP_VARIABLE_FRAME_SIZE, \
+ .sample_fmts = (const enum AVSampleFormat[]){ sample_fmt_, \
+ AV_SAMPLE_FMT_NONE }, \
+}
+
+#define PCM_ENCODER_2(cf, id, sample_fmt, name, long_name) \
+ PCM_ENCODER_ ## cf(id, sample_fmt, name, long_name)
+#define PCM_ENCODER_3(cf, id, sample_fmt, name, long_name) \
+ PCM_ENCODER_2(cf, id, sample_fmt, name, long_name)
+#define PCM_ENCODER(id, sample_fmt, name, long_name) \
+ PCM_ENCODER_3(CONFIG_ ## id ## _ENCODER, id, sample_fmt, name, long_name)
+
+#define PCM_DECODER_0(id, sample_fmt, name, long_name)
+#define PCM_DECODER_1(id_, sample_fmt_, name_, long_name_) \
+AVCodec ff_ ## name_ ## _decoder = { \
+ .name = #name_, \
+ .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
+ .type = AVMEDIA_TYPE_AUDIO, \
+ .id = AV_CODEC_ID_ ## id_, \
+ .priv_data_size = sizeof(PCMDecode), \
+ .init = pcm_decode_init, \
+ .decode = pcm_decode_frame, \
+ .capabilities = AV_CODEC_CAP_DR1, \
+ .sample_fmts = (const enum AVSampleFormat[]){ sample_fmt_, \
+ AV_SAMPLE_FMT_NONE }, \
+}
+
+#define PCM_DECODER_2(cf, id, sample_fmt, name, long_name) \
+ PCM_DECODER_ ## cf(id, sample_fmt, name, long_name)
+#define PCM_DECODER_3(cf, id, sample_fmt, name, long_name) \
+ PCM_DECODER_2(cf, id, sample_fmt, name, long_name)
+#define PCM_DECODER(id, sample_fmt, name, long_name) \
+ PCM_DECODER_3(CONFIG_ ## id ## _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 (PCM_ALAW, AV_SAMPLE_FMT_S16, pcm_alaw, "PCM A-law");
+PCM_CODEC (PCM_F32BE, AV_SAMPLE_FMT_FLT, pcm_f32be, "PCM 32-bit floating point big-endian");
+PCM_CODEC (PCM_F32LE, AV_SAMPLE_FMT_FLT, pcm_f32le, "PCM 32-bit floating point little-endian");
+PCM_CODEC (PCM_F64BE, AV_SAMPLE_FMT_DBL, pcm_f64be, "PCM 64-bit floating point big-endian");
+PCM_CODEC (PCM_F64LE, AV_SAMPLE_FMT_DBL, pcm_f64le, "PCM 64-bit floating point little-endian");
+PCM_DECODER(PCM_LXF, AV_SAMPLE_FMT_S32P, pcm_lxf, "PCM signed 20-bit little-endian planar");
+PCM_CODEC (PCM_MULAW, AV_SAMPLE_FMT_S16, pcm_mulaw, "PCM mu-law");
+PCM_CODEC (PCM_S8, AV_SAMPLE_FMT_U8, pcm_s8, "PCM signed 8-bit");
+PCM_CODEC (PCM_S16BE, AV_SAMPLE_FMT_S16, pcm_s16be, "PCM signed 16-bit big-endian");
+PCM_DECODER(PCM_S16BE_PLANAR, AV_SAMPLE_FMT_S16P,pcm_s16be_planar, "PCM signed 16-bit big-endian planar");
+PCM_CODEC (PCM_S16LE, AV_SAMPLE_FMT_S16, pcm_s16le, "PCM signed 16-bit little-endian");
+PCM_DECODER(PCM_S16LE_PLANAR, AV_SAMPLE_FMT_S16P, pcm_s16le_planar, "PCM 16-bit little-endian planar");
+PCM_CODEC (PCM_S24BE, AV_SAMPLE_FMT_S32, pcm_s24be, "PCM signed 24-bit big-endian");
+PCM_CODEC (PCM_S24DAUD, AV_SAMPLE_FMT_S16, pcm_s24daud, "PCM D-Cinema audio signed 24-bit");
+PCM_CODEC (PCM_S24LE, AV_SAMPLE_FMT_S32, pcm_s24le, "PCM signed 24-bit little-endian");
+PCM_DECODER(PCM_S24LE_PLANAR, AV_SAMPLE_FMT_S32P,pcm_s24le_planar, "PCM signed 24-bit little-endian planar");
+PCM_CODEC (PCM_S32BE, AV_SAMPLE_FMT_S32, pcm_s32be, "PCM signed 32-bit big-endian");
+PCM_CODEC (PCM_S32LE, AV_SAMPLE_FMT_S32, pcm_s32le, "PCM signed 32-bit little-endian");
+PCM_DECODER(PCM_S32LE_PLANAR, AV_SAMPLE_FMT_S32P,pcm_s32le_planar, "PCM signed 32-bit little-endian planar");
+PCM_CODEC (PCM_U8, AV_SAMPLE_FMT_U8, pcm_u8, "PCM unsigned 8-bit");
+PCM_CODEC (PCM_U16BE, AV_SAMPLE_FMT_S16, pcm_u16be, "PCM unsigned 16-bit big-endian");
+PCM_CODEC (PCM_U16LE, AV_SAMPLE_FMT_S16, pcm_u16le, "PCM unsigned 16-bit little-endian");
+PCM_CODEC (PCM_U24BE, AV_SAMPLE_FMT_S32, pcm_u24be, "PCM unsigned 24-bit big-endian");
+PCM_CODEC (PCM_U24LE, AV_SAMPLE_FMT_S32, pcm_u24le, "PCM unsigned 24-bit little-endian");
+PCM_CODEC (PCM_U32BE, AV_SAMPLE_FMT_S32, pcm_u32be, "PCM unsigned 32-bit big-endian");
+PCM_CODEC (PCM_U32LE, AV_SAMPLE_FMT_S32, pcm_u32le, "PCM unsigned 32-bit little-endian");
+PCM_DECODER(PCM_ZORK, AV_SAMPLE_FMT_U8, pcm_zork, "PCM Zork");
projects / ffmpeg / blobdiff