* Float MPEG Audio decoder
* Copyright (c) 2010 Michael Niedermayer
*
- * 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
*/
-#define CONFIG_FLOAT 1
-#include "mpegaudiodec.c"
-
-void ff_mpa_synth_filter_float(MPADecodeContext *s, float *synth_buf_ptr,
- int *synth_buf_offset,
- float *window, int *dither_state,
- float *samples, int incr,
- float sb_samples[SBLIMIT])
-{
- float *synth_buf;
- int offset;
-
- offset = *synth_buf_offset;
- synth_buf = synth_buf_ptr + offset;
-
- s->dct.dct32(synth_buf, sb_samples);
- s->apply_window_mp3(synth_buf, window, dither_state, samples, incr);
+#include "config.h"
+#include "libavutil/samplefmt.h"
- offset = (offset - 32) & 511;
- *synth_buf_offset = offset;
-}
-
-static void compute_antialias_float(MPADecodeContext *s,
- GranuleDef *g)
-{
- float *ptr;
- int n, i;
-
- /* we antialias only "long" bands */
- if (g->block_type == 2) {
- if (!g->switch_point)
- return;
- /* XXX: check this for 8000Hz case */
- n = 1;
- } else {
- n = SBLIMIT - 1;
- }
-
- ptr = g->sb_hybrid + 18;
- for(i = n;i > 0;i--) {
- float tmp0, tmp1;
- float *csa = &csa_table_float[0][0];
-#define FLOAT_AA(j)\
- tmp0= ptr[-1-j];\
- tmp1= ptr[ j];\
- ptr[-1-j] = tmp0 * csa[0+4*j] - tmp1 * csa[1+4*j];\
- ptr[ j] = tmp0 * csa[1+4*j] + tmp1 * csa[0+4*j];
+#define CONFIG_FLOAT 1
- FLOAT_AA(0)
- FLOAT_AA(1)
- FLOAT_AA(2)
- FLOAT_AA(3)
- FLOAT_AA(4)
- FLOAT_AA(5)
- FLOAT_AA(6)
- FLOAT_AA(7)
+#include "mpegaudio.h"
- ptr += 18;
- }
-}
+#define SHR(a,b) ((a)*(1.0f/(1<<(b))))
+#define FIXR_OLD(a) ((int)((a) * FRAC_ONE + 0.5))
+#define FIXR(x) ((float)(x))
+#define FIXHR(x) ((float)(x))
+#define MULH3(x, y, s) ((s)*(y)*(x))
+#define MULLx(x, y, s) ((y)*(x))
+#define RENAME(a) a ## _float
+#define OUT_FMT AV_SAMPLE_FMT_FLT
+#define OUT_FMT_P AV_SAMPLE_FMT_FLTP
-static av_cold int decode_end(AVCodecContext * avctx)
-{
- MPADecodeContext *s = avctx->priv_data;
- ff_dct_end(&s->dct);
- return 0;
-}
+#include "mpegaudiodec_template.c"
#if CONFIG_MP1FLOAT_DECODER
-AVCodec mp1float_decoder =
-{
- "mp1float",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_MP1,
- sizeof(MPADecodeContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_PARSE_ONLY,
- .flush= flush,
- .long_name= NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"),
+AVCodec ff_mp1float_decoder = {
+ .name = "mp1float",
+ .long_name = NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_MP1,
+ .priv_data_size = sizeof(MPADecodeContext),
+ .init = decode_init,
+ .decode = decode_frame,
+ .capabilities = AV_CODEC_CAP_DR1,
+ .flush = flush,
+ .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
+ AV_SAMPLE_FMT_FLT,
+ AV_SAMPLE_FMT_NONE },
};
#endif
#if CONFIG_MP2FLOAT_DECODER
-AVCodec mp2float_decoder =
-{
- "mp2float",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_MP2,
- sizeof(MPADecodeContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_PARSE_ONLY,
- .flush= flush,
- .long_name= NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
+AVCodec ff_mp2float_decoder = {
+ .name = "mp2float",
+ .long_name = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_MP2,
+ .priv_data_size = sizeof(MPADecodeContext),
+ .init = decode_init,
+ .decode = decode_frame,
+ .capabilities = AV_CODEC_CAP_DR1,
+ .flush = flush,
+ .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
+ AV_SAMPLE_FMT_FLT,
+ AV_SAMPLE_FMT_NONE },
};
#endif
#if CONFIG_MP3FLOAT_DECODER
-AVCodec mp3float_decoder =
-{
- "mp3float",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_MP3,
- sizeof(MPADecodeContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_PARSE_ONLY,
- .flush= flush,
- .long_name= NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
+AVCodec ff_mp3float_decoder = {
+ .name = "mp3float",
+ .long_name = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_MP3,
+ .priv_data_size = sizeof(MPADecodeContext),
+ .init = decode_init,
+ .decode = decode_frame,
+ .capabilities = AV_CODEC_CAP_DR1,
+ .flush = flush,
+ .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
+ AV_SAMPLE_FMT_FLT,
+ AV_SAMPLE_FMT_NONE },
};
#endif
#if CONFIG_MP3ADUFLOAT_DECODER
-AVCodec mp3adufloat_decoder =
-{
- "mp3adufloat",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_MP3ADU,
- sizeof(MPADecodeContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame_adu,
- CODEC_CAP_PARSE_ONLY,
- .flush= flush,
- .long_name= NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
+AVCodec ff_mp3adufloat_decoder = {
+ .name = "mp3adufloat",
+ .long_name = NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_MP3ADU,
+ .priv_data_size = sizeof(MPADecodeContext),
+ .init = decode_init,
+ .decode = decode_frame_adu,
+ .capabilities = AV_CODEC_CAP_DR1,
+ .flush = flush,
+ .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
+ AV_SAMPLE_FMT_FLT,
+ AV_SAMPLE_FMT_NONE },
};
#endif
#if CONFIG_MP3ON4FLOAT_DECODER
-AVCodec mp3on4float_decoder =
-{
- "mp3on4float",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_MP3ON4,
- sizeof(MP3On4DecodeContext),
- decode_init_mp3on4,
- NULL,
- decode_close_mp3on4,
- decode_frame_mp3on4,
- .flush= flush,
- .long_name= NULL_IF_CONFIG_SMALL("MP3onMP4"),
+AVCodec ff_mp3on4float_decoder = {
+ .name = "mp3on4float",
+ .long_name = NULL_IF_CONFIG_SMALL("MP3onMP4"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_MP3ON4,
+ .priv_data_size = sizeof(MP3On4DecodeContext),
+ .init = decode_init_mp3on4,
+ .close = decode_close_mp3on4,
+ .decode = decode_frame_mp3on4,
+ .capabilities = AV_CODEC_CAP_DR1,
+ .flush = flush_mp3on4,
+ .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
+ AV_SAMPLE_FMT_NONE },
};
#endif
projects / ffmpeg / blobdiff