*/
#include "libavutil/attributes.h"
+#include "libavutil/float_dsp.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
typedef struct PCMDecode {
short table[256];
+ AVFloatDSPContext *fdsp;
+ float scale;
} PCMDecode;
static av_cold int pcm_decode_init(AVCodecContext *avctx)
for (i = 0; i < 256; i++)
s->table[i] = ulaw2linear(i);
break;
+ case AV_CODEC_ID_PCM_F16LE:
+ case AV_CODEC_ID_PCM_F24LE:
+ s->scale = 1. / (1 << (avctx->bits_per_coded_sample - 1));
+ s->fdsp = avpriv_float_dsp_alloc(0);
+ if (!s->fdsp)
+ return AVERROR(ENOMEM);
+ break;
default:
break;
}
return 0;
}
+static av_cold int pcm_decode_close(AVCodecContext *avctx)
+{
+ PCMDecode *s = avctx->priv_data;
+
+ av_freep(&s->fdsp);
+
+ return 0;
+}
+
/**
* Read PCM samples macro
* @param size Data size of native machine format
break;
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_F32LE:
+ case AV_CODEC_ID_PCM_F24LE:
+ case AV_CODEC_ID_PCM_F16LE:
DECODE(32, le32, src, samples, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S32LE_PLANAR:
break;
case AV_CODEC_ID_PCM_F64LE:
case AV_CODEC_ID_PCM_F32LE:
+ case AV_CODEC_ID_PCM_F24LE:
+ case AV_CODEC_ID_PCM_F16LE:
case AV_CODEC_ID_PCM_S64LE:
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_S16LE:
return -1;
}
+ if (avctx->codec_id == AV_CODEC_ID_PCM_F16LE ||
+ avctx->codec_id == AV_CODEC_ID_PCM_F24LE) {
+ s->fdsp->vector_fmul_scalar((float *)frame->extended_data[0],
+ (const float *)frame->extended_data[0],
+ s->scale, FFALIGN(frame->nb_samples * avctx->channels, 4));
+ emms_c();
+ }
+
*got_frame_ptr = 1;
return buf_size;
.id = AV_CODEC_ID_ ## id_, \
.priv_data_size = sizeof(PCMDecode), \
.init = pcm_decode_init, \
+ .close = pcm_decode_close, \
.decode = pcm_decode_frame, \
.capabilities = AV_CODEC_CAP_DR1, \
.sample_fmts = (const enum AVSampleFormat[]){ sample_fmt_, \
/* 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 / G.711 A-law");
+PCM_DECODER(PCM_F16LE, AV_SAMPLE_FMT_FLT, pcm_f16le, "PCM 16.8 floating point little-endian");
+PCM_DECODER(PCM_F24LE, AV_SAMPLE_FMT_FLT, pcm_f24le, "PCM 24.0 floating point little-endian");
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");