2
by Jacky TSUI
Add ffmpeg 1.2 library |
1 |
/*
|
2 |
* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
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3 |
*
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4 |
* This file is part of FFmpeg.
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5 |
*
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6 |
* FFmpeg is free software; you can redistribute it and/or
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7 |
* modify it under the terms of the GNU Lesser General Public
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8 |
* License as published by the Free Software Foundation; either
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9 |
* version 2.1 of the License, or (at your option) any later version.
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10 |
*
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11 |
* FFmpeg is distributed in the hope that it will be useful,
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12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 |
* Lesser General Public License for more details.
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15 |
*
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16 |
* You should have received a copy of the GNU Lesser General Public
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17 |
* License along with FFmpeg; if not, write to the Free Software
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18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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19 |
*/
|
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20 |
||
21 |
#include "libavutil/common.h" |
|
22 |
#include "libavutil/dict.h" |
|
23 |
// #include "libavutil/error.h"
|
|
31
by Henrik Rydgard
Update to FFMPEG snapshot taken 2015-01-24. |
24 |
#include "libavutil/frame.h" |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
25 |
#include "libavutil/log.h" |
26 |
#include "libavutil/mem.h" |
|
27 |
#include "libavutil/opt.h" |
|
28 |
||
29 |
#include "avresample.h" |
|
30 |
#include "internal.h" |
|
31 |
#include "audio_data.h" |
|
32 |
#include "audio_convert.h" |
|
33 |
#include "audio_mix.h" |
|
34 |
#include "resample.h" |
|
35 |
||
36 |
int avresample_open(AVAudioResampleContext *avr) |
|
37 |
{
|
|
38 |
int ret; |
|
39 |
||
31
by Henrik Rydgard
Update to FFMPEG snapshot taken 2015-01-24. |
40 |
if (avresample_is_open(avr)) { |
41 |
av_log(avr, AV_LOG_ERROR, "The resampling context is already open.\n"); |
|
42 |
return AVERROR(EINVAL); |
|
43 |
}
|
|
44 |
||
2
by Jacky TSUI
Add ffmpeg 1.2 library |
45 |
/* set channel mixing parameters */
|
46 |
avr->in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout); |
|
47 |
if (avr->in_channels <= 0 || avr->in_channels > AVRESAMPLE_MAX_CHANNELS) { |
|
48 |
av_log(avr, AV_LOG_ERROR, "Invalid input channel layout: %"PRIu64"\n", |
|
49 |
avr->in_channel_layout); |
|
50 |
return AVERROR(EINVAL); |
|
51 |
}
|
|
52 |
avr->out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout); |
|
53 |
if (avr->out_channels <= 0 || avr->out_channels > AVRESAMPLE_MAX_CHANNELS) { |
|
54 |
av_log(avr, AV_LOG_ERROR, "Invalid output channel layout: %"PRIu64"\n", |
|
55 |
avr->out_channel_layout); |
|
56 |
return AVERROR(EINVAL); |
|
57 |
}
|
|
58 |
avr->resample_channels = FFMIN(avr->in_channels, avr->out_channels); |
|
59 |
avr->downmix_needed = avr->in_channels > avr->out_channels; |
|
60 |
avr->upmix_needed = avr->out_channels > avr->in_channels || |
|
61 |
(!avr->downmix_needed && (avr->mix_matrix || |
|
62 |
avr->in_channel_layout != avr->out_channel_layout)); |
|
63 |
avr->mixing_needed = avr->downmix_needed || avr->upmix_needed; |
|
64 |
||
65 |
/* set resampling parameters */
|
|
66 |
avr->resample_needed = avr->in_sample_rate != avr->out_sample_rate || |
|
67 |
avr->force_resampling; |
|
68 |
||
69 |
/* select internal sample format if not specified by the user */
|
|
70 |
if (avr->internal_sample_fmt == AV_SAMPLE_FMT_NONE && |
|
71 |
(avr->mixing_needed || avr->resample_needed)) { |
|
72 |
enum AVSampleFormat in_fmt = av_get_planar_sample_fmt(avr->in_sample_fmt); |
|
73 |
enum AVSampleFormat out_fmt = av_get_planar_sample_fmt(avr->out_sample_fmt); |
|
74 |
int max_bps = FFMAX(av_get_bytes_per_sample(in_fmt), |
|
75 |
av_get_bytes_per_sample(out_fmt)); |
|
76 |
if (max_bps <= 2) { |
|
77 |
avr->internal_sample_fmt = AV_SAMPLE_FMT_S16P; |
|
78 |
} else if (avr->mixing_needed) { |
|
79 |
avr->internal_sample_fmt = AV_SAMPLE_FMT_FLTP; |
|
80 |
} else { |
|
81 |
if (max_bps <= 4) { |
|
82 |
if (in_fmt == AV_SAMPLE_FMT_S32P || |
|
83 |
out_fmt == AV_SAMPLE_FMT_S32P) { |
|
84 |
if (in_fmt == AV_SAMPLE_FMT_FLTP || |
|
85 |
out_fmt == AV_SAMPLE_FMT_FLTP) { |
|
86 |
/* if one is s32 and the other is flt, use dbl */
|
|
87 |
avr->internal_sample_fmt = AV_SAMPLE_FMT_DBLP; |
|
88 |
} else { |
|
89 |
/* if one is s32 and the other is s32, s16, or u8, use s32 */
|
|
90 |
avr->internal_sample_fmt = AV_SAMPLE_FMT_S32P; |
|
91 |
}
|
|
92 |
} else { |
|
93 |
/* if one is flt and the other is flt, s16 or u8, use flt */
|
|
94 |
avr->internal_sample_fmt = AV_SAMPLE_FMT_FLTP; |
|
95 |
}
|
|
96 |
} else { |
|
97 |
/* if either is dbl, use dbl */
|
|
98 |
avr->internal_sample_fmt = AV_SAMPLE_FMT_DBLP; |
|
99 |
}
|
|
100 |
}
|
|
101 |
av_log(avr, AV_LOG_DEBUG, "Using %s as internal sample format\n", |
|
102 |
av_get_sample_fmt_name(avr->internal_sample_fmt)); |
|
103 |
}
|
|
104 |
||
105 |
/* we may need to add an extra conversion in order to remap channels if
|
|
106 |
the output format is not planar */
|
|
107 |
if (avr->use_channel_map && !avr->mixing_needed && !avr->resample_needed && |
|
31
by Henrik Rydgard
Update to FFMPEG snapshot taken 2015-01-24. |
108 |
!ff_sample_fmt_is_planar(avr->out_sample_fmt, avr->out_channels)) { |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
109 |
avr->internal_sample_fmt = av_get_planar_sample_fmt(avr->out_sample_fmt); |
110 |
}
|
|
111 |
||
112 |
/* set sample format conversion parameters */
|
|
113 |
if (avr->resample_needed || avr->mixing_needed) |
|
114 |
avr->in_convert_needed = avr->in_sample_fmt != avr->internal_sample_fmt; |
|
115 |
else
|
|
116 |
avr->in_convert_needed = avr->use_channel_map && |
|
31
by Henrik Rydgard
Update to FFMPEG snapshot taken 2015-01-24. |
117 |
!ff_sample_fmt_is_planar(avr->out_sample_fmt, avr->out_channels); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
118 |
|
119 |
if (avr->resample_needed || avr->mixing_needed || avr->in_convert_needed) |
|
120 |
avr->out_convert_needed = avr->internal_sample_fmt != avr->out_sample_fmt; |
|
121 |
else
|
|
122 |
avr->out_convert_needed = avr->in_sample_fmt != avr->out_sample_fmt; |
|
123 |
||
124 |
avr->in_copy_needed = !avr->in_convert_needed && (avr->mixing_needed || |
|
125 |
(avr->use_channel_map && avr->resample_needed)); |
|
126 |
||
127 |
if (avr->use_channel_map) { |
|
128 |
if (avr->in_copy_needed) { |
|
129 |
avr->remap_point = REMAP_IN_COPY; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
130 |
av_log(avr, AV_LOG_TRACE, "remap channels during in_copy\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
131 |
} else if (avr->in_convert_needed) { |
132 |
avr->remap_point = REMAP_IN_CONVERT; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
133 |
av_log(avr, AV_LOG_TRACE, "remap channels during in_convert\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
134 |
} else if (avr->out_convert_needed) { |
135 |
avr->remap_point = REMAP_OUT_CONVERT; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
136 |
av_log(avr, AV_LOG_TRACE, "remap channels during out_convert\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
137 |
} else { |
138 |
avr->remap_point = REMAP_OUT_COPY; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
139 |
av_log(avr, AV_LOG_TRACE, "remap channels during out_copy\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
140 |
}
|
141 |
||
142 |
#ifdef DEBUG
|
|
143 |
{
|
|
144 |
int ch; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
145 |
av_log(avr, AV_LOG_TRACE, "output map: "); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
146 |
if (avr->ch_map_info.do_remap) |
147 |
for (ch = 0; ch < avr->in_channels; ch++) |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
148 |
av_log(avr, AV_LOG_TRACE, " % 2d", avr->ch_map_info.channel_map[ch]); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
149 |
else
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
150 |
av_log(avr, AV_LOG_TRACE, "n/a"); |
151 |
av_log(avr, AV_LOG_TRACE, "\n"); |
|
152 |
av_log(avr, AV_LOG_TRACE, "copy map: "); |
|
2
by Jacky TSUI
Add ffmpeg 1.2 library |
153 |
if (avr->ch_map_info.do_copy) |
154 |
for (ch = 0; ch < avr->in_channels; ch++) |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
155 |
av_log(avr, AV_LOG_TRACE, " % 2d", avr->ch_map_info.channel_copy[ch]); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
156 |
else
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
157 |
av_log(avr, AV_LOG_TRACE, "n/a"); |
158 |
av_log(avr, AV_LOG_TRACE, "\n"); |
|
159 |
av_log(avr, AV_LOG_TRACE, "zero map: "); |
|
2
by Jacky TSUI
Add ffmpeg 1.2 library |
160 |
if (avr->ch_map_info.do_zero) |
161 |
for (ch = 0; ch < avr->in_channels; ch++) |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
162 |
av_log(avr, AV_LOG_TRACE, " % 2d", avr->ch_map_info.channel_zero[ch]); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
163 |
else
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
164 |
av_log(avr, AV_LOG_TRACE, "n/a"); |
165 |
av_log(avr, AV_LOG_TRACE, "\n"); |
|
166 |
av_log(avr, AV_LOG_TRACE, "input map: "); |
|
2
by Jacky TSUI
Add ffmpeg 1.2 library |
167 |
for (ch = 0; ch < avr->in_channels; ch++) |
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
168 |
av_log(avr, AV_LOG_TRACE, " % 2d", avr->ch_map_info.input_map[ch]); |
169 |
av_log(avr, AV_LOG_TRACE, "\n"); |
|
2
by Jacky TSUI
Add ffmpeg 1.2 library |
170 |
}
|
171 |
#endif
|
|
172 |
} else |
|
173 |
avr->remap_point = REMAP_NONE; |
|
174 |
||
175 |
/* allocate buffers */
|
|
176 |
if (avr->in_copy_needed || avr->in_convert_needed) { |
|
177 |
avr->in_buffer = ff_audio_data_alloc(FFMAX(avr->in_channels, avr->out_channels), |
|
178 |
0, avr->internal_sample_fmt, |
|
179 |
"in_buffer"); |
|
180 |
if (!avr->in_buffer) { |
|
181 |
ret = AVERROR(EINVAL); |
|
182 |
goto error; |
|
183 |
}
|
|
184 |
}
|
|
185 |
if (avr->resample_needed) { |
|
186 |
avr->resample_out_buffer = ff_audio_data_alloc(avr->out_channels, |
|
31
by Henrik Rydgard
Update to FFMPEG snapshot taken 2015-01-24. |
187 |
1024, avr->internal_sample_fmt, |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
188 |
"resample_out_buffer"); |
189 |
if (!avr->resample_out_buffer) { |
|
190 |
ret = AVERROR(EINVAL); |
|
191 |
goto error; |
|
192 |
}
|
|
193 |
}
|
|
194 |
if (avr->out_convert_needed) { |
|
195 |
avr->out_buffer = ff_audio_data_alloc(avr->out_channels, 0, |
|
196 |
avr->out_sample_fmt, "out_buffer"); |
|
197 |
if (!avr->out_buffer) { |
|
198 |
ret = AVERROR(EINVAL); |
|
199 |
goto error; |
|
200 |
}
|
|
201 |
}
|
|
202 |
avr->out_fifo = av_audio_fifo_alloc(avr->out_sample_fmt, avr->out_channels, |
|
203 |
1024); |
|
204 |
if (!avr->out_fifo) { |
|
205 |
ret = AVERROR(ENOMEM); |
|
206 |
goto error; |
|
207 |
}
|
|
208 |
||
209 |
/* setup contexts */
|
|
210 |
if (avr->in_convert_needed) { |
|
211 |
avr->ac_in = ff_audio_convert_alloc(avr, avr->internal_sample_fmt, |
|
212 |
avr->in_sample_fmt, avr->in_channels, |
|
213 |
avr->in_sample_rate, |
|
214 |
avr->remap_point == REMAP_IN_CONVERT); |
|
215 |
if (!avr->ac_in) { |
|
216 |
ret = AVERROR(ENOMEM); |
|
217 |
goto error; |
|
218 |
}
|
|
219 |
}
|
|
220 |
if (avr->out_convert_needed) { |
|
221 |
enum AVSampleFormat src_fmt; |
|
222 |
if (avr->in_convert_needed) |
|
223 |
src_fmt = avr->internal_sample_fmt; |
|
224 |
else
|
|
225 |
src_fmt = avr->in_sample_fmt; |
|
226 |
avr->ac_out = ff_audio_convert_alloc(avr, avr->out_sample_fmt, src_fmt, |
|
227 |
avr->out_channels, |
|
228 |
avr->out_sample_rate, |
|
229 |
avr->remap_point == REMAP_OUT_CONVERT); |
|
230 |
if (!avr->ac_out) { |
|
231 |
ret = AVERROR(ENOMEM); |
|
232 |
goto error; |
|
233 |
}
|
|
234 |
}
|
|
235 |
if (avr->resample_needed) { |
|
236 |
avr->resample = ff_audio_resample_init(avr); |
|
237 |
if (!avr->resample) { |
|
238 |
ret = AVERROR(ENOMEM); |
|
239 |
goto error; |
|
240 |
}
|
|
241 |
}
|
|
242 |
if (avr->mixing_needed) { |
|
243 |
avr->am = ff_audio_mix_alloc(avr); |
|
244 |
if (!avr->am) { |
|
245 |
ret = AVERROR(ENOMEM); |
|
246 |
goto error; |
|
247 |
}
|
|
248 |
}
|
|
249 |
||
250 |
return 0; |
|
251 |
||
252 |
error: |
|
253 |
avresample_close(avr); |
|
254 |
return ret; |
|
255 |
}
|
|
256 |
||
31
by Henrik Rydgard
Update to FFMPEG snapshot taken 2015-01-24. |
257 |
int avresample_is_open(AVAudioResampleContext *avr) |
258 |
{
|
|
259 |
return !!avr->out_fifo; |
|
260 |
}
|
|
261 |
||
2
by Jacky TSUI
Add ffmpeg 1.2 library |
262 |
void avresample_close(AVAudioResampleContext *avr) |
263 |
{
|
|
264 |
ff_audio_data_free(&avr->in_buffer); |
|
265 |
ff_audio_data_free(&avr->resample_out_buffer); |
|
266 |
ff_audio_data_free(&avr->out_buffer); |
|
267 |
av_audio_fifo_free(avr->out_fifo); |
|
268 |
avr->out_fifo = NULL; |
|
269 |
ff_audio_convert_free(&avr->ac_in); |
|
270 |
ff_audio_convert_free(&avr->ac_out); |
|
271 |
ff_audio_resample_free(&avr->resample); |
|
272 |
ff_audio_mix_free(&avr->am); |
|
273 |
av_freep(&avr->mix_matrix); |
|
274 |
||
275 |
avr->use_channel_map = 0; |
|
276 |
}
|
|
277 |
||
278 |
void avresample_free(AVAudioResampleContext **avr) |
|
279 |
{
|
|
280 |
if (!*avr) |
|
281 |
return; |
|
282 |
avresample_close(*avr); |
|
283 |
av_opt_free(*avr); |
|
284 |
av_freep(avr); |
|
285 |
}
|
|
286 |
||
287 |
static int handle_buffered_output(AVAudioResampleContext *avr, |
|
288 |
AudioData *output, AudioData *converted) |
|
289 |
{
|
|
290 |
int ret; |
|
291 |
||
292 |
if (!output || av_audio_fifo_size(avr->out_fifo) > 0 || |
|
293 |
(converted && output->allocated_samples < converted->nb_samples)) { |
|
294 |
if (converted) { |
|
295 |
/* if there are any samples in the output FIFO or if the
|
|
296 |
user-supplied output buffer is not large enough for all samples,
|
|
297 |
we add to the output FIFO */
|
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
298 |
av_log(avr, AV_LOG_TRACE, "[FIFO] add %s to out_fifo\n", converted->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
299 |
ret = ff_audio_data_add_to_fifo(avr->out_fifo, converted, 0, |
300 |
converted->nb_samples); |
|
301 |
if (ret < 0) |
|
302 |
return ret; |
|
303 |
}
|
|
304 |
||
305 |
/* if the user specified an output buffer, read samples from the output
|
|
306 |
FIFO to the user output */
|
|
307 |
if (output && output->allocated_samples > 0) { |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
308 |
av_log(avr, AV_LOG_TRACE, "[FIFO] read from out_fifo to output\n"); |
309 |
av_log(avr, AV_LOG_TRACE, "[end conversion]\n"); |
|
2
by Jacky TSUI
Add ffmpeg 1.2 library |
310 |
return ff_audio_data_read_from_fifo(avr->out_fifo, output, |
311 |
output->allocated_samples); |
|
312 |
}
|
|
313 |
} else if (converted) { |
|
314 |
/* copy directly to output if it is large enough or there is not any
|
|
315 |
data in the output FIFO */
|
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
316 |
av_log(avr, AV_LOG_TRACE, "[copy] %s to output\n", converted->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
317 |
output->nb_samples = 0; |
318 |
ret = ff_audio_data_copy(output, converted, |
|
319 |
avr->remap_point == REMAP_OUT_COPY ? |
|
320 |
&avr->ch_map_info : NULL); |
|
321 |
if (ret < 0) |
|
322 |
return ret; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
323 |
av_log(avr, AV_LOG_TRACE, "[end conversion]\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
324 |
return output->nb_samples; |
325 |
}
|
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
326 |
av_log(avr, AV_LOG_TRACE, "[end conversion]\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
327 |
return 0; |
328 |
}
|
|
329 |
||
330 |
int attribute_align_arg avresample_convert(AVAudioResampleContext *avr, |
|
331 |
uint8_t **output, int out_plane_size, |
|
52.1.1
by Unknown W. Brackets
Update to FFmpeg 3.0.2. |
332 |
int out_samples, |
333 |
uint8_t * const *input, |
|
2
by Jacky TSUI
Add ffmpeg 1.2 library |
334 |
int in_plane_size, int in_samples) |
335 |
{
|
|
336 |
AudioData input_buffer; |
|
337 |
AudioData output_buffer; |
|
338 |
AudioData *current_buffer; |
|
339 |
int ret, direct_output; |
|
340 |
||
341 |
/* reset internal buffers */
|
|
342 |
if (avr->in_buffer) { |
|
343 |
avr->in_buffer->nb_samples = 0; |
|
344 |
ff_audio_data_set_channels(avr->in_buffer, |
|
345 |
avr->in_buffer->allocated_channels); |
|
346 |
}
|
|
347 |
if (avr->resample_out_buffer) { |
|
348 |
avr->resample_out_buffer->nb_samples = 0; |
|
349 |
ff_audio_data_set_channels(avr->resample_out_buffer, |
|
350 |
avr->resample_out_buffer->allocated_channels); |
|
351 |
}
|
|
352 |
if (avr->out_buffer) { |
|
353 |
avr->out_buffer->nb_samples = 0; |
|
354 |
ff_audio_data_set_channels(avr->out_buffer, |
|
355 |
avr->out_buffer->allocated_channels); |
|
356 |
}
|
|
357 |
||
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
358 |
av_log(avr, AV_LOG_TRACE, "[start conversion]\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
359 |
|
360 |
/* initialize output_buffer with output data */
|
|
361 |
direct_output = output && av_audio_fifo_size(avr->out_fifo) == 0; |
|
362 |
if (output) { |
|
363 |
ret = ff_audio_data_init(&output_buffer, output, out_plane_size, |
|
364 |
avr->out_channels, out_samples, |
|
365 |
avr->out_sample_fmt, 0, "output"); |
|
366 |
if (ret < 0) |
|
367 |
return ret; |
|
368 |
output_buffer.nb_samples = 0; |
|
369 |
}
|
|
370 |
||
371 |
if (input) { |
|
372 |
/* initialize input_buffer with input data */
|
|
373 |
ret = ff_audio_data_init(&input_buffer, input, in_plane_size, |
|
374 |
avr->in_channels, in_samples, |
|
375 |
avr->in_sample_fmt, 1, "input"); |
|
376 |
if (ret < 0) |
|
377 |
return ret; |
|
378 |
current_buffer = &input_buffer; |
|
379 |
||
380 |
if (avr->upmix_needed && !avr->in_convert_needed && !avr->resample_needed && |
|
381 |
!avr->out_convert_needed && direct_output && out_samples >= in_samples) { |
|
382 |
/* in some rare cases we can copy input to output and upmix
|
|
383 |
directly in the output buffer */
|
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
384 |
av_log(avr, AV_LOG_TRACE, "[copy] %s to output\n", current_buffer->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
385 |
ret = ff_audio_data_copy(&output_buffer, current_buffer, |
386 |
avr->remap_point == REMAP_OUT_COPY ? |
|
387 |
&avr->ch_map_info : NULL); |
|
388 |
if (ret < 0) |
|
389 |
return ret; |
|
390 |
current_buffer = &output_buffer; |
|
391 |
} else if (avr->remap_point == REMAP_OUT_COPY && |
|
392 |
(!direct_output || out_samples < in_samples)) { |
|
393 |
/* if remapping channels during output copy, we may need to
|
|
394 |
* use an intermediate buffer in order to remap before adding
|
|
395 |
* samples to the output fifo */
|
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
396 |
av_log(avr, AV_LOG_TRACE, "[copy] %s to out_buffer\n", current_buffer->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
397 |
ret = ff_audio_data_copy(avr->out_buffer, current_buffer, |
398 |
&avr->ch_map_info); |
|
399 |
if (ret < 0) |
|
400 |
return ret; |
|
401 |
current_buffer = avr->out_buffer; |
|
402 |
} else if (avr->in_copy_needed || avr->in_convert_needed) { |
|
403 |
/* if needed, copy or convert input to in_buffer, and downmix if
|
|
404 |
applicable */
|
|
405 |
if (avr->in_convert_needed) { |
|
406 |
ret = ff_audio_data_realloc(avr->in_buffer, |
|
407 |
current_buffer->nb_samples); |
|
408 |
if (ret < 0) |
|
409 |
return ret; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
410 |
av_log(avr, AV_LOG_TRACE, "[convert] %s to in_buffer\n", current_buffer->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
411 |
ret = ff_audio_convert(avr->ac_in, avr->in_buffer, |
412 |
current_buffer); |
|
413 |
if (ret < 0) |
|
414 |
return ret; |
|
415 |
} else { |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
416 |
av_log(avr, AV_LOG_TRACE, "[copy] %s to in_buffer\n", current_buffer->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
417 |
ret = ff_audio_data_copy(avr->in_buffer, current_buffer, |
418 |
avr->remap_point == REMAP_IN_COPY ? |
|
419 |
&avr->ch_map_info : NULL); |
|
420 |
if (ret < 0) |
|
421 |
return ret; |
|
422 |
}
|
|
423 |
ff_audio_data_set_channels(avr->in_buffer, avr->in_channels); |
|
424 |
if (avr->downmix_needed) { |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
425 |
av_log(avr, AV_LOG_TRACE, "[downmix] in_buffer\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
426 |
ret = ff_audio_mix(avr->am, avr->in_buffer); |
427 |
if (ret < 0) |
|
428 |
return ret; |
|
429 |
}
|
|
430 |
current_buffer = avr->in_buffer; |
|
431 |
}
|
|
432 |
} else { |
|
433 |
/* flush resampling buffer and/or output FIFO if input is NULL */
|
|
434 |
if (!avr->resample_needed) |
|
435 |
return handle_buffered_output(avr, output ? &output_buffer : NULL, |
|
436 |
NULL); |
|
437 |
current_buffer = NULL; |
|
438 |
}
|
|
439 |
||
440 |
if (avr->resample_needed) { |
|
441 |
AudioData *resample_out; |
|
442 |
||
443 |
if (!avr->out_convert_needed && direct_output && out_samples > 0) |
|
444 |
resample_out = &output_buffer; |
|
445 |
else
|
|
446 |
resample_out = avr->resample_out_buffer; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
447 |
av_log(avr, AV_LOG_TRACE, "[resample] %s to %s\n", |
10
by Henrik Rydgård
Update our ffmpeg snapshot to a clone of the official repository. |
448 |
current_buffer ? current_buffer->name : "null", |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
449 |
resample_out->name); |
450 |
ret = ff_audio_resample(avr->resample, resample_out, |
|
451 |
current_buffer); |
|
452 |
if (ret < 0) |
|
453 |
return ret; |
|
454 |
||
455 |
/* if resampling did not produce any samples, just return 0 */
|
|
456 |
if (resample_out->nb_samples == 0) { |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
457 |
av_log(avr, AV_LOG_TRACE, "[end conversion]\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
458 |
return 0; |
459 |
}
|
|
460 |
||
461 |
current_buffer = resample_out; |
|
462 |
}
|
|
463 |
||
464 |
if (avr->upmix_needed) { |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
465 |
av_log(avr, AV_LOG_TRACE, "[upmix] %s\n", current_buffer->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
466 |
ret = ff_audio_mix(avr->am, current_buffer); |
467 |
if (ret < 0) |
|
468 |
return ret; |
|
469 |
}
|
|
470 |
||
471 |
/* if we resampled or upmixed directly to output, return here */
|
|
472 |
if (current_buffer == &output_buffer) { |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
473 |
av_log(avr, AV_LOG_TRACE, "[end conversion]\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
474 |
return current_buffer->nb_samples; |
475 |
}
|
|
476 |
||
477 |
if (avr->out_convert_needed) { |
|
478 |
if (direct_output && out_samples >= current_buffer->nb_samples) { |
|
479 |
/* convert directly to output */
|
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
480 |
av_log(avr, AV_LOG_TRACE, "[convert] %s to output\n", current_buffer->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
481 |
ret = ff_audio_convert(avr->ac_out, &output_buffer, current_buffer); |
482 |
if (ret < 0) |
|
483 |
return ret; |
|
484 |
||
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
485 |
av_log(avr, AV_LOG_TRACE, "[end conversion]\n"); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
486 |
return output_buffer.nb_samples; |
487 |
} else { |
|
488 |
ret = ff_audio_data_realloc(avr->out_buffer, |
|
489 |
current_buffer->nb_samples); |
|
490 |
if (ret < 0) |
|
491 |
return ret; |
|
46.1.1
by Sérgio Benjamim
Update to FFmpeg 2.7.1. |
492 |
av_log(avr, AV_LOG_TRACE, "[convert] %s to out_buffer\n", current_buffer->name); |
2
by Jacky TSUI
Add ffmpeg 1.2 library |
493 |
ret = ff_audio_convert(avr->ac_out, avr->out_buffer, |
494 |
current_buffer); |
|
495 |
if (ret < 0) |
|
496 |
return ret; |
|
497 |
current_buffer = avr->out_buffer; |
|
498 |
}
|
|
499 |
}
|
|
500 |
||
501 |
return handle_buffered_output(avr, output ? &output_buffer : NULL, |
|
502 |
current_buffer); |
|
503 |
}
|
|
504 |
||
31
by Henrik Rydgard
Update to FFMPEG snapshot taken 2015-01-24. |
505 |
int avresample_config(AVAudioResampleContext *avr, AVFrame *out, AVFrame *in) |
506 |
{
|
|
507 |
if (avresample_is_open(avr)) { |
|
508 |
avresample_close(avr); |
|
509 |
}
|
|
510 |
||
511 |
if (in) { |
|
512 |
avr->in_channel_layout = in->channel_layout; |
|
513 |
avr->in_sample_rate = in->sample_rate; |
|
514 |
avr->in_sample_fmt = in->format; |
|
515 |
}
|
|
516 |
||
517 |
if (out) { |
|
518 |
avr->out_channel_layout = out->channel_layout; |
|
519 |
avr->out_sample_rate = out->sample_rate; |
|
520 |
avr->out_sample_fmt = out->format; |
|
521 |
}
|
|
522 |
||
523 |
return 0; |
|
524 |
}
|
|
525 |
||
526 |
static int config_changed(AVAudioResampleContext *avr, |
|
527 |
AVFrame *out, AVFrame *in) |
|
528 |
{
|
|
529 |
int ret = 0; |
|
530 |
||
531 |
if (in) { |
|
532 |
if (avr->in_channel_layout != in->channel_layout || |
|
533 |
avr->in_sample_rate != in->sample_rate || |
|
534 |
avr->in_sample_fmt != in->format) { |
|
535 |
ret |= AVERROR_INPUT_CHANGED; |
|
536 |
}
|
|
537 |
}
|
|
538 |
||
539 |
if (out) { |
|
540 |
if (avr->out_channel_layout != out->channel_layout || |
|
541 |
avr->out_sample_rate != out->sample_rate || |
|
542 |
avr->out_sample_fmt != out->format) { |
|
543 |
ret |= AVERROR_OUTPUT_CHANGED; |
|
544 |
}
|
|
545 |
}
|
|
546 |
||
547 |
return ret; |
|
548 |
}
|
|
549 |
||
550 |
static inline int convert_frame(AVAudioResampleContext *avr, |
|
551 |
AVFrame *out, AVFrame *in) |
|
552 |
{
|
|
553 |
int ret; |
|
554 |
uint8_t **out_data = NULL, **in_data = NULL; |
|
555 |
int out_linesize = 0, in_linesize = 0; |
|
556 |
int out_nb_samples = 0, in_nb_samples = 0; |
|
557 |
||
558 |
if (out) { |
|
559 |
out_data = out->extended_data; |
|
560 |
out_linesize = out->linesize[0]; |
|
561 |
out_nb_samples = out->nb_samples; |
|
562 |
}
|
|
563 |
||
564 |
if (in) { |
|
565 |
in_data = in->extended_data; |
|
566 |
in_linesize = in->linesize[0]; |
|
567 |
in_nb_samples = in->nb_samples; |
|
568 |
}
|
|
569 |
||
570 |
ret = avresample_convert(avr, out_data, out_linesize, |
|
571 |
out_nb_samples, |
|
572 |
in_data, in_linesize, |
|
573 |
in_nb_samples); |
|
574 |
||
575 |
if (ret < 0) { |
|
576 |
if (out) |
|
577 |
out->nb_samples = 0; |
|
578 |
return ret; |
|
579 |
}
|
|
580 |
||
581 |
if (out) |
|
582 |
out->nb_samples = ret; |
|
583 |
||
584 |
return 0; |
|
585 |
}
|
|
586 |
||
587 |
static inline int available_samples(AVFrame *out) |
|
588 |
{
|
|
589 |
int samples; |
|
590 |
int bytes_per_sample = av_get_bytes_per_sample(out->format); |
|
591 |
if (!bytes_per_sample) |
|
592 |
return AVERROR(EINVAL); |
|
593 |
||
594 |
samples = out->linesize[0] / bytes_per_sample; |
|
595 |
if (av_sample_fmt_is_planar(out->format)) { |
|
596 |
return samples; |
|
597 |
} else { |
|
598 |
int channels = av_get_channel_layout_nb_channels(out->channel_layout); |
|
599 |
return samples / channels; |
|
600 |
}
|
|
601 |
}
|
|
602 |
||
603 |
int avresample_convert_frame(AVAudioResampleContext *avr, |
|
604 |
AVFrame *out, AVFrame *in) |
|
605 |
{
|
|
606 |
int ret, setup = 0; |
|
607 |
||
608 |
if (!avresample_is_open(avr)) { |
|
609 |
if ((ret = avresample_config(avr, out, in)) < 0) |
|
610 |
return ret; |
|
611 |
if ((ret = avresample_open(avr)) < 0) |
|
612 |
return ret; |
|
613 |
setup = 1; |
|
614 |
} else { |
|
615 |
// return as is or reconfigure for input changes?
|
|
616 |
if ((ret = config_changed(avr, out, in))) |
|
617 |
return ret; |
|
618 |
}
|
|
619 |
||
620 |
if (out) { |
|
621 |
if (!out->linesize[0]) { |
|
622 |
out->nb_samples = avresample_get_out_samples(avr, in->nb_samples); |
|
623 |
if ((ret = av_frame_get_buffer(out, 0)) < 0) { |
|
624 |
if (setup) |
|
625 |
avresample_close(avr); |
|
626 |
return ret; |
|
627 |
}
|
|
628 |
} else { |
|
629 |
if (!out->nb_samples) |
|
630 |
out->nb_samples = available_samples(out); |
|
631 |
}
|
|
632 |
}
|
|
633 |
||
634 |
return convert_frame(avr, out, in); |
|
635 |
}
|
|
636 |
||
2
by Jacky TSUI
Add ffmpeg 1.2 library |
637 |
int avresample_get_matrix(AVAudioResampleContext *avr, double *matrix, |
638 |
int stride) |
|
639 |
{
|
|
640 |
int in_channels, out_channels, i, o; |
|
641 |
||
642 |
if (avr->am) |
|
643 |
return ff_audio_mix_get_matrix(avr->am, matrix, stride); |
|
644 |
||
645 |
in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout); |
|
646 |
out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout); |
|
647 |
||
648 |
if ( in_channels <= 0 || in_channels > AVRESAMPLE_MAX_CHANNELS || |
|
649 |
out_channels <= 0 || out_channels > AVRESAMPLE_MAX_CHANNELS) { |
|
650 |
av_log(avr, AV_LOG_ERROR, "Invalid channel layouts\n"); |
|
651 |
return AVERROR(EINVAL); |
|
652 |
}
|
|
653 |
||
654 |
if (!avr->mix_matrix) { |
|
655 |
av_log(avr, AV_LOG_ERROR, "matrix is not set\n"); |
|
656 |
return AVERROR(EINVAL); |
|
657 |
}
|
|
658 |
||
659 |
for (o = 0; o < out_channels; o++) |
|
660 |
for (i = 0; i < in_channels; i++) |
|
661 |
matrix[o * stride + i] = avr->mix_matrix[o * in_channels + i]; |
|
662 |
||
663 |
return 0; |
|
664 |
}
|
|
665 |
||
666 |
int avresample_set_matrix(AVAudioResampleContext *avr, const double *matrix, |
|
667 |
int stride) |
|
668 |
{
|
|
669 |
int in_channels, out_channels, i, o; |
|
670 |
||
671 |
if (avr->am) |
|
672 |
return ff_audio_mix_set_matrix(avr->am, matrix, stride); |
|
673 |
||
674 |
in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout); |
|
675 |
out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout); |
|
676 |
||
677 |
if ( in_channels <= 0 || in_channels > AVRESAMPLE_MAX_CHANNELS || |
|
678 |
out_channels <= 0 || out_channels > AVRESAMPLE_MAX_CHANNELS) { |
|
679 |
av_log(avr, AV_LOG_ERROR, "Invalid channel layouts\n"); |
|
680 |
return AVERROR(EINVAL); |
|
681 |
}
|
|
682 |
||
683 |
if (avr->mix_matrix) |
|
684 |
av_freep(&avr->mix_matrix); |
|
685 |
avr->mix_matrix = av_malloc(in_channels * out_channels * |
|
686 |
sizeof(*avr->mix_matrix)); |
|
687 |
if (!avr->mix_matrix) |
|
688 |
return AVERROR(ENOMEM); |
|
689 |
||
690 |
for (o = 0; o < out_channels; o++) |
|
691 |
for (i = 0; i < in_channels; i++) |
|
692 |
avr->mix_matrix[o * in_channels + i] = matrix[o * stride + i]; |
|
693 |
||
694 |
return 0; |
|
695 |
}
|
|
696 |
||
697 |
int avresample_set_channel_mapping(AVAudioResampleContext *avr, |
|
698 |
const int *channel_map) |
|
699 |
{
|
|
700 |
ChannelMapInfo *info = &avr->ch_map_info; |
|
701 |
int in_channels, ch, i; |
|
702 |
||
703 |
in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout); |
|
704 |
if (in_channels <= 0 || in_channels > AVRESAMPLE_MAX_CHANNELS) { |
|
705 |
av_log(avr, AV_LOG_ERROR, "Invalid input channel layout\n"); |
|
706 |
return AVERROR(EINVAL); |
|
707 |
}
|
|
708 |
||
709 |
memset(info, 0, sizeof(*info)); |
|
710 |
memset(info->input_map, -1, sizeof(info->input_map)); |
|
711 |
||
712 |
for (ch = 0; ch < in_channels; ch++) { |
|
713 |
if (channel_map[ch] >= in_channels) { |
|
714 |
av_log(avr, AV_LOG_ERROR, "Invalid channel map\n"); |
|
715 |
return AVERROR(EINVAL); |
|
716 |
}
|
|
717 |
if (channel_map[ch] < 0) { |
|
718 |
info->channel_zero[ch] = 1; |
|
719 |
info->channel_map[ch] = -1; |
|
720 |
info->do_zero = 1; |
|
721 |
} else if (info->input_map[channel_map[ch]] >= 0) { |
|
722 |
info->channel_copy[ch] = info->input_map[channel_map[ch]]; |
|
723 |
info->channel_map[ch] = -1; |
|
724 |
info->do_copy = 1; |
|
725 |
} else { |
|
726 |
info->channel_map[ch] = channel_map[ch]; |
|
727 |
info->input_map[channel_map[ch]] = ch; |
|
728 |
info->do_remap = 1; |
|
729 |
}
|
|
730 |
}
|
|
731 |
/* Fill-in unmapped input channels with unmapped output channels.
|
|
732 |
This is used when remapping during conversion from interleaved to
|
|
733 |
planar format. */
|
|
734 |
for (ch = 0, i = 0; ch < in_channels && i < in_channels; ch++, i++) { |
|
735 |
while (ch < in_channels && info->input_map[ch] >= 0) |
|
736 |
ch++; |
|
737 |
while (i < in_channels && info->channel_map[i] >= 0) |
|
738 |
i++; |
|
739 |
if (ch >= in_channels || i >= in_channels) |
|
740 |
break; |
|
741 |
info->input_map[ch] = i; |
|
742 |
}
|
|
743 |
||
744 |
avr->use_channel_map = 1; |
|
745 |
return 0; |
|
746 |
}
|
|
747 |
||
748 |
int avresample_available(AVAudioResampleContext *avr) |
|
749 |
{
|
|
750 |
return av_audio_fifo_size(avr->out_fifo); |
|
751 |
}
|
|
752 |
||
31
by Henrik Rydgard
Update to FFMPEG snapshot taken 2015-01-24. |
753 |
int avresample_get_out_samples(AVAudioResampleContext *avr, int in_nb_samples) |
754 |
{
|
|
755 |
int64_t samples = avresample_get_delay(avr) + (int64_t)in_nb_samples; |
|
756 |
||
757 |
if (avr->resample_needed) { |
|
758 |
samples = av_rescale_rnd(samples, |
|
759 |
avr->out_sample_rate, |
|
760 |
avr->in_sample_rate, |
|
761 |
AV_ROUND_UP); |
|
762 |
}
|
|
763 |
||
764 |
samples += avresample_available(avr); |
|
765 |
||
766 |
if (samples > INT_MAX) |
|
767 |
return AVERROR(EINVAL); |
|
768 |
||
769 |
return samples; |
|
770 |
}
|
|
771 |
||
2
by Jacky TSUI
Add ffmpeg 1.2 library |
772 |
int avresample_read(AVAudioResampleContext *avr, uint8_t **output, int nb_samples) |
773 |
{
|
|
774 |
if (!output) |
|
775 |
return av_audio_fifo_drain(avr->out_fifo, nb_samples); |
|
776 |
return av_audio_fifo_read(avr->out_fifo, (void**)output, nb_samples); |
|
777 |
}
|
|
778 |
||
779 |
unsigned avresample_version(void) |
|
780 |
{
|
|
781 |
return LIBAVRESAMPLE_VERSION_INT; |
|
782 |
}
|
|
783 |
||
784 |
const char *avresample_license(void) |
|
785 |
{
|
|
786 |
#define LICENSE_PREFIX "libavresample license: "
|
|
787 |
return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; |
|
788 |
}
|
|
789 |
||
790 |
const char *avresample_configuration(void) |
|
791 |
{
|
|
792 |
return FFMPEG_CONFIGURATION; |
|
793 |
}
|