Line | Branch | Exec | Source |
---|---|---|---|
1 | /* | ||
2 | * ATRAC1 compatible decoder | ||
3 | * Copyright (c) 2009 Maxim Poliakovski | ||
4 | * Copyright (c) 2009 Benjamin Larsson | ||
5 | * | ||
6 | * This file is part of FFmpeg. | ||
7 | * | ||
8 | * FFmpeg is free software; you can redistribute it and/or | ||
9 | * modify it under the terms of the GNU Lesser General Public | ||
10 | * License as published by the Free Software Foundation; either | ||
11 | * version 2.1 of the License, or (at your option) any later version. | ||
12 | * | ||
13 | * FFmpeg is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
16 | * Lesser General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU Lesser General Public | ||
19 | * License along with FFmpeg; if not, write to the Free Software | ||
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
21 | */ | ||
22 | |||
23 | /** | ||
24 | * @file | ||
25 | * ATRAC1 compatible decoder. | ||
26 | * This decoder handles raw ATRAC1 data and probably SDDS data. | ||
27 | */ | ||
28 | |||
29 | /* Many thanks to Tim Craig for all the help! */ | ||
30 | |||
31 | #include <math.h> | ||
32 | |||
33 | #include "libavutil/float_dsp.h" | ||
34 | #include "libavutil/mem_internal.h" | ||
35 | #include "libavutil/tx.h" | ||
36 | |||
37 | #include "avcodec.h" | ||
38 | #include "codec_internal.h" | ||
39 | #include "decode.h" | ||
40 | #include "get_bits.h" | ||
41 | #include "sinewin.h" | ||
42 | |||
43 | #include "atrac.h" | ||
44 | #include "atrac1data.h" | ||
45 | |||
46 | #define AT1_MAX_BFU 52 ///< max number of block floating units in a sound unit | ||
47 | #define AT1_SU_SIZE 212 ///< number of bytes in a sound unit | ||
48 | #define AT1_SU_SAMPLES 512 ///< number of samples in a sound unit | ||
49 | #define AT1_FRAME_SIZE AT1_SU_SIZE * 2 | ||
50 | #define AT1_SU_MAX_BITS AT1_SU_SIZE * 8 | ||
51 | #define AT1_MAX_CHANNELS 2 | ||
52 | |||
53 | #define AT1_QMF_BANDS 3 | ||
54 | #define IDX_LOW_BAND 0 | ||
55 | #define IDX_MID_BAND 1 | ||
56 | #define IDX_HIGH_BAND 2 | ||
57 | |||
58 | /** | ||
59 | * Sound unit struct, one unit is used per channel | ||
60 | */ | ||
61 | typedef struct AT1SUCtx { | ||
62 | int log2_block_count[AT1_QMF_BANDS]; ///< log2 number of blocks in a band | ||
63 | int num_bfus; ///< number of Block Floating Units | ||
64 | float* spectrum[2]; | ||
65 | DECLARE_ALIGNED(32, float, spec1)[AT1_SU_SAMPLES]; ///< mdct buffer | ||
66 | DECLARE_ALIGNED(32, float, spec2)[AT1_SU_SAMPLES]; ///< mdct buffer | ||
67 | DECLARE_ALIGNED(32, float, fst_qmf_delay)[46]; ///< delay line for the 1st stacked QMF filter | ||
68 | DECLARE_ALIGNED(32, float, snd_qmf_delay)[46]; ///< delay line for the 2nd stacked QMF filter | ||
69 | DECLARE_ALIGNED(32, float, last_qmf_delay)[256+39]; ///< delay line for the last stacked QMF filter | ||
70 | } AT1SUCtx; | ||
71 | |||
72 | /** | ||
73 | * The atrac1 context, holds all needed parameters for decoding | ||
74 | */ | ||
75 | typedef struct AT1Ctx { | ||
76 | AT1SUCtx SUs[AT1_MAX_CHANNELS]; ///< channel sound unit | ||
77 | DECLARE_ALIGNED(32, float, spec)[AT1_SU_SAMPLES]; ///< the mdct spectrum buffer | ||
78 | |||
79 | DECLARE_ALIGNED(32, float, low)[256]; | ||
80 | DECLARE_ALIGNED(32, float, mid)[256]; | ||
81 | DECLARE_ALIGNED(32, float, high)[512]; | ||
82 | float* bands[3]; | ||
83 | AVTXContext *mdct_ctx[3]; | ||
84 | av_tx_fn mdct_fn[3]; | ||
85 | void (*vector_fmul_window)(float *dst, const float *src0, | ||
86 | const float *src1, const float *win, int len); | ||
87 | } AT1Ctx; | ||
88 | |||
89 | /** size of the transform in samples in the long mode for each QMF band */ | ||
90 | static const uint16_t samples_per_band[3] = {128, 128, 256}; | ||
91 | static const uint8_t mdct_long_nbits[3] = {7, 7, 8}; | ||
92 | |||
93 | |||
94 | 7157 | static void at1_imdct(AT1Ctx *q, float *spec, float *out, int nbits, | |
95 | int rev_spec) | ||
96 | { | ||
97 | 7157 | AVTXContext *mdct_context = q->mdct_ctx[nbits - 5 - (nbits > 6)]; | |
98 | 7157 | av_tx_fn mdct_fn = q->mdct_fn[nbits - 5 - (nbits > 6)]; | |
99 | 7157 | int transf_size = 1 << nbits; | |
100 | |||
101 |
2/2✓ Branch 0 taken 4776 times.
✓ Branch 1 taken 2381 times.
|
7157 | if (rev_spec) { |
102 | int i; | ||
103 |
2/2✓ Branch 0 taken 454272 times.
✓ Branch 1 taken 4776 times.
|
459048 | for (i = 0; i < transf_size / 2; i++) |
104 | 454272 | FFSWAP(float, spec[i], spec[transf_size - 1 - i]); | |
105 | } | ||
106 | 7157 | mdct_fn(mdct_context, out, spec, sizeof(float)); | |
107 | 7157 | } | |
108 | |||
109 | |||
110 | 2366 | static int at1_imdct_block(AT1SUCtx* su, AT1Ctx *q) | |
111 | { | ||
112 | int band_num, band_samples, log2_block_count, nbits, num_blocks, block_size; | ||
113 | 2366 | unsigned int start_pos, ref_pos = 0, pos = 0; | |
114 | |||
115 |
2/2✓ Branch 0 taken 7098 times.
✓ Branch 1 taken 2366 times.
|
9464 | for (band_num = 0; band_num < AT1_QMF_BANDS; band_num++) { |
116 | float *prev_buf; | ||
117 | int j; | ||
118 | |||
119 | 7098 | band_samples = samples_per_band[band_num]; | |
120 | 7098 | log2_block_count = su->log2_block_count[band_num]; | |
121 | |||
122 | /* number of mdct blocks in the current QMF band: 1 - for long mode */ | ||
123 | /* 4 for short mode(low/middle bands) and 8 for short mode(high band)*/ | ||
124 | 7098 | num_blocks = 1 << log2_block_count; | |
125 | |||
126 |
2/2✓ Branch 0 taken 7085 times.
✓ Branch 1 taken 13 times.
|
7098 | if (num_blocks == 1) { |
127 | /* mdct block size in samples: 128 (long mode, low & mid bands), */ | ||
128 | /* 256 (long mode, high band) and 32 (short mode, all bands) */ | ||
129 | 7085 | block_size = band_samples >> log2_block_count; | |
130 | |||
131 | /* calc transform size in bits according to the block_size_mode */ | ||
132 | 7085 | nbits = mdct_long_nbits[band_num] - log2_block_count; | |
133 | |||
134 |
4/6✓ Branch 0 taken 7085 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2361 times.
✓ Branch 3 taken 4724 times.
✗ Branch 4 not taken.
✓ Branch 5 taken 2361 times.
|
7085 | if (nbits != 5 && nbits != 7 && nbits != 8) |
135 | ✗ | return AVERROR_INVALIDDATA; | |
136 | } else { | ||
137 | 13 | block_size = 32; | |
138 | 13 | nbits = 5; | |
139 | } | ||
140 | |||
141 | 7098 | start_pos = 0; | |
142 | 7098 | prev_buf = &su->spectrum[1][ref_pos + band_samples - 16]; | |
143 |
2/2✓ Branch 0 taken 7157 times.
✓ Branch 1 taken 7098 times.
|
14255 | for (j=0; j < num_blocks; j++) { |
144 | 7157 | at1_imdct(q, &q->spec[pos], &su->spectrum[0][ref_pos + start_pos], nbits, band_num); | |
145 | |||
146 | /* overlap and window */ | ||
147 | 7157 | q->vector_fmul_window(&q->bands[band_num][start_pos], prev_buf, | |
148 | 7157 | &su->spectrum[0][ref_pos + start_pos], ff_sine_32, 16); | |
149 | |||
150 | 7157 | prev_buf = &su->spectrum[0][ref_pos+start_pos + 16]; | |
151 | 7157 | start_pos += block_size; | |
152 | 7157 | pos += block_size; | |
153 | } | ||
154 | |||
155 |
2/2✓ Branch 0 taken 7085 times.
✓ Branch 1 taken 13 times.
|
7098 | if (num_blocks == 1) |
156 | 7085 | memcpy(q->bands[band_num] + 32, &su->spectrum[0][ref_pos + 16], 240 * sizeof(float)); | |
157 | |||
158 | 7098 | ref_pos += band_samples; | |
159 | } | ||
160 | |||
161 | /* Swap buffers so the mdct overlap works */ | ||
162 | 2366 | FFSWAP(float*, su->spectrum[0], su->spectrum[1]); | |
163 | |||
164 | 2366 | return 0; | |
165 | } | ||
166 | |||
167 | /** | ||
168 | * Parse the block size mode byte | ||
169 | */ | ||
170 | |||
171 | 2366 | static int at1_parse_bsm(GetBitContext* gb, int log2_block_cnt[AT1_QMF_BANDS]) | |
172 | { | ||
173 | int log2_block_count_tmp, i; | ||
174 | |||
175 |
2/2✓ Branch 0 taken 4732 times.
✓ Branch 1 taken 2366 times.
|
7098 | for (i = 0; i < 2; i++) { |
176 | /* low and mid band */ | ||
177 | 4732 | log2_block_count_tmp = get_bits(gb, 2); | |
178 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 4732 times.
|
4732 | if (log2_block_count_tmp & 1) |
179 | ✗ | return AVERROR_INVALIDDATA; | |
180 | 4732 | log2_block_cnt[i] = 2 - log2_block_count_tmp; | |
181 | } | ||
182 | |||
183 | /* high band */ | ||
184 | 2366 | log2_block_count_tmp = get_bits(gb, 2); | |
185 |
3/4✓ Branch 0 taken 2361 times.
✓ Branch 1 taken 5 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 2361 times.
|
2366 | if (log2_block_count_tmp != 0 && log2_block_count_tmp != 3) |
186 | ✗ | return AVERROR_INVALIDDATA; | |
187 | 2366 | log2_block_cnt[IDX_HIGH_BAND] = 3 - log2_block_count_tmp; | |
188 | |||
189 | 2366 | skip_bits(gb, 2); | |
190 | 2366 | return 0; | |
191 | } | ||
192 | |||
193 | |||
194 | 2366 | static int at1_unpack_dequant(GetBitContext* gb, AT1SUCtx* su, | |
195 | float spec[AT1_SU_SAMPLES]) | ||
196 | { | ||
197 | int bits_used, band_num, bfu_num, i; | ||
198 | uint8_t idwls[AT1_MAX_BFU]; ///< the word length indexes for each BFU | ||
199 | uint8_t idsfs[AT1_MAX_BFU]; ///< the scalefactor indexes for each BFU | ||
200 | |||
201 | /* parse the info byte (2nd byte) telling how much BFUs were coded */ | ||
202 | 2366 | su->num_bfus = bfu_amount_tab1[get_bits(gb, 3)]; | |
203 | |||
204 | /* calc number of consumed bits: | ||
205 | num_BFUs * (idwl(4bits) + idsf(6bits)) + log2_block_count(8bits) + info_byte(8bits) | ||
206 | + info_byte_copy(8bits) + log2_block_count_copy(8bits) */ | ||
207 | 7098 | bits_used = su->num_bfus * 10 + 32 + | |
208 | 2366 | bfu_amount_tab2[get_bits(gb, 2)] + | |
209 | 2366 | (bfu_amount_tab3[get_bits(gb, 3)] << 1); | |
210 | |||
211 | /* get word length index (idwl) for each BFU */ | ||
212 |
2/2✓ Branch 0 taken 105308 times.
✓ Branch 1 taken 2366 times.
|
107674 | for (i = 0; i < su->num_bfus; i++) |
213 | 105308 | idwls[i] = get_bits(gb, 4); | |
214 | |||
215 | /* get scalefactor index (idsf) for each BFU */ | ||
216 |
2/2✓ Branch 0 taken 105308 times.
✓ Branch 1 taken 2366 times.
|
107674 | for (i = 0; i < su->num_bfus; i++) |
217 | 105308 | idsfs[i] = get_bits(gb, 6); | |
218 | |||
219 | /* zero idwl/idsf for empty BFUs */ | ||
220 |
2/2✓ Branch 0 taken 17724 times.
✓ Branch 1 taken 2366 times.
|
20090 | for (i = su->num_bfus; i < AT1_MAX_BFU; i++) |
221 | 17724 | idwls[i] = idsfs[i] = 0; | |
222 | |||
223 | /* read in the spectral data and reconstruct MDCT spectrum of this channel */ | ||
224 |
2/2✓ Branch 0 taken 7098 times.
✓ Branch 1 taken 2366 times.
|
9464 | for (band_num = 0; band_num < AT1_QMF_BANDS; band_num++) { |
225 |
2/2✓ Branch 0 taken 123032 times.
✓ Branch 1 taken 7098 times.
|
130130 | for (bfu_num = bfu_bands_t[band_num]; bfu_num < bfu_bands_t[band_num+1]; bfu_num++) { |
226 | int pos; | ||
227 | |||
228 | 123032 | int num_specs = specs_per_bfu[bfu_num]; | |
229 | 123032 | int word_len = !!idwls[bfu_num] + idwls[bfu_num]; | |
230 | 123032 | float scale_factor = ff_atrac_sf_table[idsfs[bfu_num]]; | |
231 | 123032 | bits_used += word_len * num_specs; /* add number of bits consumed by current BFU */ | |
232 | |||
233 | /* check for bitstream overflow */ | ||
234 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 123032 times.
|
123032 | if (bits_used > AT1_SU_MAX_BITS) |
235 | ✗ | return AVERROR_INVALIDDATA; | |
236 | |||
237 | /* get the position of the 1st spec according to the block size mode */ | ||
238 |
2/2✓ Branch 0 taken 228 times.
✓ Branch 1 taken 122804 times.
|
123032 | pos = su->log2_block_count[band_num] ? bfu_start_short[bfu_num] : bfu_start_long[bfu_num]; |
239 | |||
240 |
2/2✓ Branch 0 taken 57252 times.
✓ Branch 1 taken 65780 times.
|
123032 | if (word_len) { |
241 | 57252 | float max_quant = 1.0 / (float)((1 << (word_len - 1)) - 1); | |
242 | |||
243 |
2/2✓ Branch 0 taken 498028 times.
✓ Branch 1 taken 57252 times.
|
555280 | for (i = 0; i < num_specs; i++) { |
244 | /* read in a quantized spec and convert it to | ||
245 | * signed int and then inverse quantization | ||
246 | */ | ||
247 | 498028 | spec[pos+i] = get_sbits(gb, word_len) * scale_factor * max_quant; | |
248 | } | ||
249 | } else { /* word_len = 0 -> empty BFU, zero all specs in the empty BFU */ | ||
250 | 65780 | memset(&spec[pos], 0, num_specs * sizeof(float)); | |
251 | } | ||
252 | } | ||
253 | } | ||
254 | |||
255 | 2366 | return 0; | |
256 | } | ||
257 | |||
258 | |||
259 | 2366 | static void at1_subband_synthesis(AT1Ctx *q, AT1SUCtx* su, float *pOut) | |
260 | { | ||
261 | float temp[256]; | ||
262 | float iqmf_temp[512 + 46]; | ||
263 | |||
264 | /* combine low and middle bands */ | ||
265 | 2366 | ff_atrac_iqmf(q->bands[0], q->bands[1], 128, temp, su->fst_qmf_delay, iqmf_temp); | |
266 | |||
267 | /* delay the signal of the high band by 39 samples */ | ||
268 | 2366 | memcpy( su->last_qmf_delay, &su->last_qmf_delay[256], sizeof(float) * 39); | |
269 | 2366 | memcpy(&su->last_qmf_delay[39], q->bands[2], sizeof(float) * 256); | |
270 | |||
271 | /* combine (low + middle) and high bands */ | ||
272 | 2366 | ff_atrac_iqmf(temp, su->last_qmf_delay, 256, pOut, su->snd_qmf_delay, iqmf_temp); | |
273 | 2366 | } | |
274 | |||
275 | |||
276 | 1184 | static int atrac1_decode_frame(AVCodecContext *avctx, AVFrame *frame, | |
277 | int *got_frame_ptr, AVPacket *avpkt) | ||
278 | { | ||
279 | 1184 | const uint8_t *buf = avpkt->data; | |
280 | 1184 | int buf_size = avpkt->size; | |
281 | 1184 | AT1Ctx *q = avctx->priv_data; | |
282 | 1184 | int channels = avctx->ch_layout.nb_channels; | |
283 | int ch, ret; | ||
284 | GetBitContext gb; | ||
285 | |||
286 | |||
287 |
2/2✓ Branch 0 taken 1 times.
✓ Branch 1 taken 1183 times.
|
1184 | if (buf_size < 212 * channels) { |
288 | 1 | av_log(avctx, AV_LOG_ERROR, "Not enough data to decode!\n"); | |
289 | 1 | return AVERROR_INVALIDDATA; | |
290 | } | ||
291 | |||
292 | /* get output buffer */ | ||
293 | 1183 | frame->nb_samples = AT1_SU_SAMPLES; | |
294 |
1/2✗ Branch 1 not taken.
✓ Branch 2 taken 1183 times.
|
1183 | if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) |
295 | ✗ | return ret; | |
296 | |||
297 |
2/2✓ Branch 0 taken 2366 times.
✓ Branch 1 taken 1183 times.
|
3549 | for (ch = 0; ch < channels; ch++) { |
298 | 2366 | AT1SUCtx* su = &q->SUs[ch]; | |
299 | |||
300 | 2366 | init_get_bits(&gb, &buf[212 * ch], 212 * 8); | |
301 | |||
302 | /* parse block_size_mode, 1st byte */ | ||
303 | 2366 | ret = at1_parse_bsm(&gb, su->log2_block_count); | |
304 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 2366 times.
|
2366 | if (ret < 0) |
305 | ✗ | return ret; | |
306 | |||
307 | 2366 | ret = at1_unpack_dequant(&gb, su, q->spec); | |
308 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 2366 times.
|
2366 | if (ret < 0) |
309 | ✗ | return ret; | |
310 | |||
311 | 2366 | ret = at1_imdct_block(su, q); | |
312 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 2366 times.
|
2366 | if (ret < 0) |
313 | ✗ | return ret; | |
314 | 2366 | at1_subband_synthesis(q, su, (float *)frame->extended_data[ch]); | |
315 | } | ||
316 | |||
317 | 1183 | *got_frame_ptr = 1; | |
318 | |||
319 | 1183 | return avctx->block_align; | |
320 | } | ||
321 | |||
322 | |||
323 | 5 | static av_cold int atrac1_decode_end(AVCodecContext * avctx) | |
324 | { | ||
325 | 5 | AT1Ctx *q = avctx->priv_data; | |
326 | |||
327 | 5 | av_tx_uninit(&q->mdct_ctx[0]); | |
328 | 5 | av_tx_uninit(&q->mdct_ctx[1]); | |
329 | 5 | av_tx_uninit(&q->mdct_ctx[2]); | |
330 | |||
331 | 5 | return 0; | |
332 | } | ||
333 | |||
334 | |||
335 | 5 | static av_cold int atrac1_decode_init(AVCodecContext *avctx) | |
336 | { | ||
337 | 5 | AT1Ctx *q = avctx->priv_data; | |
338 | AVFloatDSPContext *fdsp; | ||
339 | 5 | int channels = avctx->ch_layout.nb_channels; | |
340 | 5 | float scale = -1.0 / (1 << 15); | |
341 | int ret; | ||
342 | |||
343 | 5 | avctx->sample_fmt = AV_SAMPLE_FMT_FLTP; | |
344 | |||
345 |
2/4✓ Branch 0 taken 5 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 5 times.
|
5 | if (channels < 1 || channels > AT1_MAX_CHANNELS) { |
346 | ✗ | av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels: %d\n", | |
347 | channels); | ||
348 | ✗ | return AVERROR(EINVAL); | |
349 | } | ||
350 | |||
351 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 5 times.
|
5 | if (avctx->block_align <= 0) { |
352 | ✗ | av_log(avctx, AV_LOG_ERROR, "Unsupported block align."); | |
353 | ✗ | return AVERROR_PATCHWELCOME; | |
354 | } | ||
355 | |||
356 | /* Init the mdct transforms */ | ||
357 | 5 | if ((ret = av_tx_init(&q->mdct_ctx[0], &q->mdct_fn[0], AV_TX_FLOAT_MDCT, | |
358 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 5 times.
|
5 | 1, 32, &scale, 0) < 0)) |
359 | ✗ | return ret; | |
360 | 5 | if ((ret = av_tx_init(&q->mdct_ctx[1], &q->mdct_fn[1], AV_TX_FLOAT_MDCT, | |
361 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 5 times.
|
5 | 1, 128, &scale, 0) < 0)) |
362 | ✗ | return ret; | |
363 | 5 | if ((ret = av_tx_init(&q->mdct_ctx[2], &q->mdct_fn[2], AV_TX_FLOAT_MDCT, | |
364 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 5 times.
|
5 | 1, 256, &scale, 0) < 0)) |
365 | ✗ | return ret; | |
366 | |||
367 | 5 | ff_init_ff_sine_windows(5); | |
368 | |||
369 | 5 | ff_atrac_generate_tables(); | |
370 | |||
371 | 5 | fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT); | |
372 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 5 times.
|
5 | if (!fdsp) |
373 | ✗ | return AVERROR(ENOMEM); | |
374 | 5 | q->vector_fmul_window = fdsp->vector_fmul_window; | |
375 | 5 | av_free(fdsp); | |
376 | |||
377 | 5 | q->bands[0] = q->low; | |
378 | 5 | q->bands[1] = q->mid; | |
379 | 5 | q->bands[2] = q->high; | |
380 | |||
381 | /* Prepare the mdct overlap buffers */ | ||
382 | 5 | q->SUs[0].spectrum[0] = q->SUs[0].spec1; | |
383 | 5 | q->SUs[0].spectrum[1] = q->SUs[0].spec2; | |
384 | 5 | q->SUs[1].spectrum[0] = q->SUs[1].spec1; | |
385 | 5 | q->SUs[1].spectrum[1] = q->SUs[1].spec2; | |
386 | |||
387 | 5 | return 0; | |
388 | } | ||
389 | |||
390 | |||
391 | const FFCodec ff_atrac1_decoder = { | ||
392 | .p.name = "atrac1", | ||
393 | CODEC_LONG_NAME("ATRAC1 (Adaptive TRansform Acoustic Coding)"), | ||
394 | .p.type = AVMEDIA_TYPE_AUDIO, | ||
395 | .p.id = AV_CODEC_ID_ATRAC1, | ||
396 | .priv_data_size = sizeof(AT1Ctx), | ||
397 | .init = atrac1_decode_init, | ||
398 | .close = atrac1_decode_end, | ||
399 | FF_CODEC_DECODE_CB(atrac1_decode_frame), | ||
400 | .p.capabilities = AV_CODEC_CAP_DR1, | ||
401 | .p.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP, | ||
402 | AV_SAMPLE_FMT_NONE }, | ||
403 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
404 | }; | ||
405 |