#define CONFIG_AC3ENC_FLOAT 1
#include "internal.h"
+#include "audiodsp.h"
#include "ac3enc.h"
#include "eac3enc.h"
#include "kbdwin.h"
-#if CONFIG_AC3_ENCODER
#define AC3ENC_TYPE AC3ENC_TYPE_AC3
#include "ac3enc_opts_template.c"
static const AVClass ac3enc_class = { "AC-3 Encoder", av_default_item_name,
ac3_options, LIBAVUTIL_VERSION_INT };
-#endif
+
+
+/*
+ * Scale MDCT coefficients from float to 24-bit fixed-point.
+ */
+static void scale_coefficients(AC3EncodeContext *s)
+{
+ int chan_size = AC3_MAX_COEFS * s->num_blocks;
+ int cpl = s->cpl_on;
+ s->ac3dsp.float_to_fixed24(s->fixed_coef_buffer + (chan_size * !cpl),
+ s->mdct_coef_buffer + (chan_size * !cpl),
+ chan_size * (s->channels + cpl));
+}
+
+
+/*
+ * Clip MDCT coefficients to allowable range.
+ */
+static void clip_coefficients(AudioDSPContext *adsp, float *coef,
+ unsigned int len)
+{
+ adsp->vector_clipf(coef, coef, len, COEF_MIN, COEF_MAX);
+}
+
+
+/*
+ * Calculate a single coupling coordinate.
+ */
+static CoefType calc_cpl_coord(CoefSumType energy_ch, CoefSumType energy_cpl)
+{
+ float coord = 0.125;
+ if (energy_cpl > 0)
+ coord *= sqrtf(energy_ch / energy_cpl);
+ return FFMIN(coord, COEF_MAX);
+}
+
#include "ac3enc_template.c"
}
-/*
- * Apply KBD window to input samples prior to MDCT.
- */
-static void apply_window(void *dsp, float *output,
- const float *input, const float *window,
- unsigned int len)
-{
- AVFloatDSPContext *fdsp = dsp;
- fdsp->vector_fmul(output, input, window, len);
-}
-
-
-/*
- * Normalize the input samples.
- * Not needed for the floating-point encoder.
- */
-static int normalize_samples(AC3EncodeContext *s)
-{
- return 0;
-}
-
-
-/*
- * Scale MDCT coefficients from float to 24-bit fixed-point.
- */
-static void scale_coefficients(AC3EncodeContext *s)
-{
- int chan_size = AC3_MAX_COEFS * s->num_blocks;
- int cpl = s->cpl_on;
- s->ac3dsp.float_to_fixed24(s->fixed_coef_buffer + (chan_size * !cpl),
- s->mdct_coef_buffer + (chan_size * !cpl),
- chan_size * (s->channels + cpl));
-}
-
-
-/*
- * Clip MDCT coefficients to allowable range.
- */
-static void clip_coefficients(DSPContext *dsp, float *coef, unsigned int len)
+av_cold int ff_ac3_float_encode_init(AVCodecContext *avctx)
{
- dsp->vector_clipf(coef, coef, COEF_MIN, COEF_MAX, len);
+ AC3EncodeContext *s = avctx->priv_data;
+ avpriv_float_dsp_init(&s->fdsp, avctx->flags & AV_CODEC_FLAG_BITEXACT);
+ return ff_ac3_encode_init(avctx);
}
-
-/*
- * Calculate a single coupling coordinate.
- */
-static CoefType calc_cpl_coord(CoefSumType energy_ch, CoefSumType energy_cpl)
-{
- float coord = 0.125;
- if (energy_cpl > 0)
- coord *= sqrtf(energy_ch / energy_cpl);
- return FFMIN(coord, COEF_MAX);
-}
-
-
-#if CONFIG_AC3_ENCODER
AVCodec ff_ac3_encoder = {
.name = "ac3",
+ .long_name = NULL_IF_CONFIG_SMALL("ATSC A/52A (AC-3)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_AC3,
.priv_data_size = sizeof(AC3EncodeContext),
- .init = ff_ac3_encode_init,
+ .init = ff_ac3_float_encode_init,
.encode2 = ff_ac3_float_encode_frame,
.close = ff_ac3_encode_close,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_NONE },
- .long_name = NULL_IF_CONFIG_SMALL("ATSC A/52A (AC-3)"),
.priv_class = &ac3enc_class,
.channel_layouts = ff_ac3_channel_layouts,
.defaults = ac3_defaults,
};
-#endif