*
* Copyright (c) 2008 Bartlomiej Wolowiec
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavcodec/nellymoserenc.c
+ * @file
* Nellymoser encoder
* by Bartlomiej Wolowiec
*
* Generic codec information: libavcodec/nellymoserdec.c
*
- * Some information also from: http://samples.mplayerhq.hu/A-codecs/Nelly_Moser/ASAO/ASAO.zip
+ * Some information also from: http://samples.libav.org/A-codecs/Nelly_Moser/ASAO/ASAO.zip
* (Copyright Joseph Artsimovich and UAB "DKD")
*
* for more information about nellymoser format, visit:
* http://wiki.multimedia.cx/index.php?title=Nellymoser
*/
-#include "nellymoser.h"
+#include "libavutil/common.h"
+#include "libavutil/float_dsp.h"
+#include "libavutil/mathematics.h"
+
+#include "audio_frame_queue.h"
#include "avcodec.h"
-#include "dsputil.h"
+#include "fft.h"
+#include "internal.h"
+#include "nellymoser.h"
+#include "sinewin.h"
#define BITSTREAM_WRITER_LE
#include "put_bits.h"
typedef struct NellyMoserEncodeContext {
AVCodecContext *avctx;
int last_frame;
- int bufsel;
- int have_saved;
- DSPContext dsp;
- MDCTContext mdct_ctx;
- DECLARE_ALIGNED_16(float, mdct_out[NELLY_SAMPLES]);
- DECLARE_ALIGNED_16(float, in_buff[NELLY_SAMPLES]);
- DECLARE_ALIGNED_16(float, buf[2][3 * NELLY_BUF_LEN]); ///< sample buffer
- float (*opt )[NELLY_BANDS];
- uint8_t (*path)[NELLY_BANDS];
+ AVFloatDSPContext fdsp;
+ FFTContext mdct_ctx;
+ AudioFrameQueue afq;
+ DECLARE_ALIGNED(32, float, mdct_out)[NELLY_SAMPLES];
+ DECLARE_ALIGNED(32, float, in_buff)[NELLY_SAMPLES];
+ DECLARE_ALIGNED(32, float, buf)[3 * NELLY_BUF_LEN]; ///< sample buffer
+ float (*opt )[OPT_SIZE];
+ uint8_t (*path)[OPT_SIZE];
} NellyMoserEncodeContext;
static float pow_table[POW_TABLE_SIZE]; ///< -pow(2, -i / 2048.0 - 3.0);
static const float quant_lut_add[7] = { 0.0, 0.0, 2.0, 7.0, 21.0, 56.0, 157.0 };
static const uint8_t quant_lut_offset[8] = { 0, 0, 1, 4, 11, 32, 81, 230 };
-void apply_mdct(NellyMoserEncodeContext *s)
+static void apply_mdct(NellyMoserEncodeContext *s)
+{
+ float *in0 = s->buf;
+ float *in1 = s->buf + NELLY_BUF_LEN;
+ float *in2 = s->buf + 2 * NELLY_BUF_LEN;
+
+ s->fdsp.vector_fmul (s->in_buff, in0, ff_sine_128, NELLY_BUF_LEN);
+ s->fdsp.vector_fmul_reverse(s->in_buff + NELLY_BUF_LEN, in1, ff_sine_128, NELLY_BUF_LEN);
+ s->mdct_ctx.mdct_calc(&s->mdct_ctx, s->mdct_out, s->in_buff);
+
+ s->fdsp.vector_fmul (s->in_buff, in1, ff_sine_128, NELLY_BUF_LEN);
+ s->fdsp.vector_fmul_reverse(s->in_buff + NELLY_BUF_LEN, in2, ff_sine_128, NELLY_BUF_LEN);
+ s->mdct_ctx.mdct_calc(&s->mdct_ctx, s->mdct_out + NELLY_BUF_LEN, s->in_buff);
+}
+
+static av_cold int encode_end(AVCodecContext *avctx)
{
- memcpy(s->in_buff, s->buf[s->bufsel], NELLY_BUF_LEN * sizeof(float));
- s->dsp.vector_fmul(s->in_buff, ff_sine_128, NELLY_BUF_LEN);
- s->dsp.vector_fmul_reverse(s->in_buff + NELLY_BUF_LEN, s->buf[s->bufsel] + NELLY_BUF_LEN, ff_sine_128,
- NELLY_BUF_LEN);
- ff_mdct_calc(&s->mdct_ctx, s->mdct_out, s->in_buff);
-
- s->dsp.vector_fmul(s->buf[s->bufsel] + NELLY_BUF_LEN, ff_sine_128, NELLY_BUF_LEN);
- s->dsp.vector_fmul_reverse(s->buf[s->bufsel] + 2 * NELLY_BUF_LEN, s->buf[1 - s->bufsel], ff_sine_128,
- NELLY_BUF_LEN);
- ff_mdct_calc(&s->mdct_ctx, s->mdct_out + NELLY_BUF_LEN, s->buf[s->bufsel] + NELLY_BUF_LEN);
+ NellyMoserEncodeContext *s = avctx->priv_data;
+
+ ff_mdct_end(&s->mdct_ctx);
+
+ if (s->avctx->trellis) {
+ av_free(s->opt);
+ av_free(s->path);
+ }
+ ff_af_queue_close(&s->afq);
+
+ return 0;
}
static av_cold int encode_init(AVCodecContext *avctx)
{
NellyMoserEncodeContext *s = avctx->priv_data;
- int i;
+ int i, ret;
if (avctx->channels != 1) {
av_log(avctx, AV_LOG_ERROR, "Nellymoser supports only 1 channel\n");
- return -1;
+ return AVERROR(EINVAL);
}
if (avctx->sample_rate != 8000 && avctx->sample_rate != 16000 &&
avctx->sample_rate != 22050 && avctx->sample_rate != 44100 &&
avctx->strict_std_compliance >= FF_COMPLIANCE_NORMAL) {
av_log(avctx, AV_LOG_ERROR, "Nellymoser works only with 8000, 16000, 11025, 22050 and 44100 sample rate\n");
- return -1;
+ return AVERROR(EINVAL);
}
avctx->frame_size = NELLY_SAMPLES;
+ avctx->initial_padding = NELLY_BUF_LEN;
+ ff_af_queue_init(avctx, &s->afq);
s->avctx = avctx;
- ff_mdct_init(&s->mdct_ctx, 8, 0, 1.0);
- dsputil_init(&s->dsp, avctx);
+ if ((ret = ff_mdct_init(&s->mdct_ctx, 8, 0, 32768.0)) < 0)
+ goto error;
+ avpriv_float_dsp_init(&s->fdsp, avctx->flags & AV_CODEC_FLAG_BITEXACT);
/* Generate overlap window */
ff_sine_window_init(ff_sine_128, 128);
if (s->avctx->trellis) {
s->opt = av_malloc(NELLY_BANDS * OPT_SIZE * sizeof(float ));
s->path = av_malloc(NELLY_BANDS * OPT_SIZE * sizeof(uint8_t));
+ if (!s->opt || !s->path) {
+ ret = AVERROR(ENOMEM);
+ goto error;
+ }
}
return 0;
-}
-
-static av_cold int encode_end(AVCodecContext *avctx)
-{
- NellyMoserEncodeContext *s = avctx->priv_data;
-
- ff_mdct_end(&s->mdct_ctx);
-
- if (s->avctx->trellis) {
- av_free(s->opt);
- av_free(s->path);
- }
-
- return 0;
+error:
+ encode_end(avctx);
+ return ret;
}
#define find_best(val, table, LUT, LUT_add, LUT_size) \
int i, j, band, best_idx;
float power_candidate, best_val;
- float (*opt )[NELLY_BANDS] = s->opt ;
- uint8_t(*path)[NELLY_BANDS] = s->path;
+ float (*opt )[OPT_SIZE] = s->opt ;
+ uint8_t(*path)[OPT_SIZE] = s->path;
- for (i = 0; i < NELLY_BANDS * OPT_SIZE; i++) {
+ for (i = 0; i < OPT_SIZE; i++) {
opt[0][i] = INFINITY;
}
}
/**
- * Encodes NELLY_SAMPLES samples. It assumes, that samples contains 3 * NELLY_BUF_LEN values
+ * Encode NELLY_SAMPLES samples. It assumes, that samples contains 3 * NELLY_BUF_LEN values
* @param s encoder context
* @param output output buffer
* @param output_size size of output buffer
}
flush_put_bits(&pb);
+ memset(put_bits_ptr(&pb), 0, output + output_size - put_bits_ptr(&pb));
}
-static int encode_frame(AVCodecContext *avctx, uint8_t *frame, int buf_size, void *data)
+static int encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
+ const AVFrame *frame, int *got_packet_ptr)
{
NellyMoserEncodeContext *s = avctx->priv_data;
- int16_t *samples = data;
- int i;
+ int ret;
if (s->last_frame)
return 0;
- if (data) {
- for (i = 0; i < avctx->frame_size; i++) {
- s->buf[s->bufsel][i] = samples[i];
- }
- for (; i < NELLY_SAMPLES; i++) {
- s->buf[s->bufsel][i] = 0;
- }
- s->bufsel = 1 - s->bufsel;
- if (!s->have_saved) {
- s->have_saved = 1;
- return 0;
+ memcpy(s->buf, s->buf + NELLY_SAMPLES, NELLY_BUF_LEN * sizeof(*s->buf));
+ if (frame) {
+ memcpy(s->buf + NELLY_BUF_LEN, frame->data[0],
+ frame->nb_samples * sizeof(*s->buf));
+ if (frame->nb_samples < NELLY_SAMPLES) {
+ memset(s->buf + NELLY_BUF_LEN + frame->nb_samples, 0,
+ (NELLY_SAMPLES - frame->nb_samples) * sizeof(*s->buf));
+ if (frame->nb_samples >= NELLY_BUF_LEN)
+ s->last_frame = 1;
}
+ if ((ret = ff_af_queue_add(&s->afq, frame)) < 0)
+ return ret;
} else {
- memset(s->buf[s->bufsel], 0, sizeof(s->buf[0][0]) * NELLY_BUF_LEN);
- s->bufsel = 1 - s->bufsel;
+ memset(s->buf + NELLY_BUF_LEN, 0, NELLY_SAMPLES * sizeof(*s->buf));
s->last_frame = 1;
}
- if (s->have_saved) {
- encode_block(s, frame, buf_size);
- return NELLY_BLOCK_LEN;
+ if ((ret = ff_alloc_packet(avpkt, NELLY_BLOCK_LEN))) {
+ av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
+ return ret;
}
+ encode_block(s, avpkt->data, avpkt->size);
+
+ /* Get the next frame pts/duration */
+ ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts,
+ &avpkt->duration);
+
+ *got_packet_ptr = 1;
return 0;
}
-AVCodec nellymoser_encoder = {
- .name = "nellymoser",
- .type = CODEC_TYPE_AUDIO,
- .id = CODEC_ID_NELLYMOSER,
+AVCodec ff_nellymoser_encoder = {
+ .name = "nellymoser",
+ .long_name = NULL_IF_CONFIG_SMALL("Nellymoser Asao"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_NELLYMOSER,
.priv_data_size = sizeof(NellyMoserEncodeContext),
- .init = encode_init,
- .encode = encode_frame,
- .close = encode_end,
- .capabilities = CODEC_CAP_SMALL_LAST_FRAME | CODEC_CAP_DELAY,
- .long_name = NULL_IF_CONFIG_SMALL("Nellymoser Asao"),
+ .init = encode_init,
+ .encode2 = encode_frame,
+ .close = encode_end,
+ .capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY,
+ .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLT,
+ AV_SAMPLE_FMT_NONE },
};
projects / ffmpeg / blobdiff