| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) Stefano Sabatini | stefasab at gmail.com | ||
| 3 | * Copyright (c) S.N. Hemanth Meenakshisundaram | smeenaks at ucsd.edu | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "libavutil/avassert.h" | ||
| 23 | #include "libavutil/channel_layout.h" | ||
| 24 | #include "libavutil/common.h" | ||
| 25 | #include "libavutil/cpu.h" | ||
| 26 | |||
| 27 | #include "audio.h" | ||
| 28 | #include "avfilter.h" | ||
| 29 | #include "avfilter_internal.h" | ||
| 30 | #include "framepool.h" | ||
| 31 | #include "internal.h" | ||
| 32 | |||
| 33 | const AVFilterPad ff_audio_default_filterpad[1] = { | ||
| 34 | { | ||
| 35 | .name = "default", | ||
| 36 | .type = AVMEDIA_TYPE_AUDIO, | ||
| 37 | } | ||
| 38 | }; | ||
| 39 | |||
| 40 | 45 | AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples) | |
| 41 | { | ||
| 42 | 45 | return ff_get_audio_buffer(link->dst->outputs[0], nb_samples); | |
| 43 | } | ||
| 44 | |||
| 45 | 232004 | AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples) | |
| 46 | { | ||
| 47 | 232004 | AVFrame *frame = NULL; | |
| 48 | 232004 | FilterLinkInternal *const li = ff_link_internal(link); | |
| 49 | 232004 | int channels = link->ch_layout.nb_channels; | |
| 50 | 232004 | int align = av_cpu_max_align(); | |
| 51 | |||
| 52 |
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232004 | if (!li->frame_pool) { |
| 53 | 2954 | li->frame_pool = ff_frame_pool_audio_init(av_buffer_allocz, channels, | |
| 54 | 1477 | nb_samples, link->format, align); | |
| 55 |
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1477 | if (!li->frame_pool) |
| 56 | ✗ | return NULL; | |
| 57 | } else { | ||
| 58 | 230527 | int pool_channels = 0; | |
| 59 | 230527 | int pool_nb_samples = 0; | |
| 60 | 230527 | int pool_align = 0; | |
| 61 | 230527 | enum AVSampleFormat pool_format = AV_SAMPLE_FMT_NONE; | |
| 62 | |||
| 63 |
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230527 | if (ff_frame_pool_get_audio_config(li->frame_pool, |
| 64 | &pool_channels, &pool_nb_samples, | ||
| 65 | &pool_format, &pool_align) < 0) { | ||
| 66 | ✗ | return NULL; | |
| 67 | } | ||
| 68 | |||
| 69 |
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230527 | if (pool_channels != channels || pool_nb_samples < nb_samples || |
| 70 |
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229039 | pool_format != link->format || pool_align != align) { |
| 71 | |||
| 72 | 1488 | ff_frame_pool_uninit(&li->frame_pool); | |
| 73 | 2976 | li->frame_pool = ff_frame_pool_audio_init(av_buffer_allocz, channels, | |
| 74 | 1488 | nb_samples, link->format, align); | |
| 75 |
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1488 | if (!li->frame_pool) |
| 76 | ✗ | return NULL; | |
| 77 | } | ||
| 78 | } | ||
| 79 | |||
| 80 | 232004 | frame = ff_frame_pool_get(li->frame_pool); | |
| 81 |
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232004 | if (!frame) |
| 82 | ✗ | return NULL; | |
| 83 | |||
| 84 | 232004 | frame->nb_samples = nb_samples; | |
| 85 |
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461996 | if (link->ch_layout.order != AV_CHANNEL_ORDER_UNSPEC && |
| 86 | 229992 | av_channel_layout_copy(&frame->ch_layout, &link->ch_layout) < 0) { | |
| 87 | ✗ | av_frame_free(&frame); | |
| 88 | ✗ | return NULL; | |
| 89 | } | ||
| 90 | 232004 | frame->sample_rate = link->sample_rate; | |
| 91 | |||
| 92 | 232004 | av_samples_set_silence(frame->extended_data, 0, nb_samples, channels, link->format); | |
| 93 | |||
| 94 | 232004 | return frame; | |
| 95 | } | ||
| 96 | |||
| 97 | 232084 | AVFrame *ff_get_audio_buffer(AVFilterLink *link, int nb_samples) | |
| 98 | { | ||
| 99 | 232084 | AVFrame *ret = NULL; | |
| 100 | |||
| 101 |
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232084 | if (link->dstpad->get_buffer.audio) |
| 102 | 397 | ret = link->dstpad->get_buffer.audio(link, nb_samples); | |
| 103 | |||
| 104 |
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232084 | if (!ret) |
| 105 | 231687 | ret = ff_default_get_audio_buffer(link, nb_samples); | |
| 106 | |||
| 107 | 232084 | return ret; | |
| 108 | } | ||
| 109 |