lavc decoders: work with refcounted frames.
[libav.git] / libavcodec / libilbc.c
CommitLineData
3641b048
MS
1/*
2 * iLBC decoder/encoder stub
3 * Copyright (c) 2012 Martin Storsjo
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <ilbc.h>
23
a903f8f0 24#include "libavutil/channel_layout.h"
1d9c2dc8 25#include "libavutil/common.h"
3641b048 26#include "libavutil/opt.h"
a903f8f0 27#include "avcodec.h"
3641b048
MS
28#include "internal.h"
29
30static int get_mode(AVCodecContext *avctx)
31{
32 if (avctx->block_align == 38)
33 return 20;
34 else if (avctx->block_align == 50)
35 return 30;
36 else if (avctx->bit_rate > 0)
37 return avctx->bit_rate <= 14000 ? 30 : 20;
38 else
39 return -1;
40}
41
42typedef struct ILBCDecContext {
43 const AVClass *class;
3641b048
MS
44 iLBC_Dec_Inst_t decoder;
45 int enhance;
46} ILBCDecContext;
47
48static const AVOption ilbc_dec_options[] = {
e6153f17 49 { "enhance", "Enhance the decoded audio (adds delay)", offsetof(ILBCDecContext, enhance), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM },
3641b048
MS
50 { NULL }
51};
52
53static const AVClass ilbc_dec_class = {
54 "libilbc", av_default_item_name, ilbc_dec_options, LIBAVUTIL_VERSION_INT
55};
56
57static av_cold int ilbc_decode_init(AVCodecContext *avctx)
58{
59 ILBCDecContext *s = avctx->priv_data;
60 int mode;
61
62 if ((mode = get_mode(avctx)) < 0) {
63 av_log(avctx, AV_LOG_ERROR, "iLBC frame mode not indicated\n");
64 return AVERROR(EINVAL);
65 }
66
67 WebRtcIlbcfix_InitDecode(&s->decoder, mode, s->enhance);
3641b048 68
30f8da29
JR
69 avctx->channels = 1;
70 avctx->channel_layout = AV_CH_LAYOUT_MONO;
71 avctx->sample_rate = 8000;
72 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
3641b048
MS
73
74 return 0;
75}
76
77static int ilbc_decode_frame(AVCodecContext *avctx, void *data,
78 int *got_frame_ptr, AVPacket *avpkt)
79{
80 const uint8_t *buf = avpkt->data;
81 int buf_size = avpkt->size;
82 ILBCDecContext *s = avctx->priv_data;
a8ea936a 83 AVFrame *frame = data;
3641b048
MS
84 int ret;
85
86 if (s->decoder.no_of_bytes > buf_size) {
87 av_log(avctx, AV_LOG_ERROR, "iLBC frame too short (%u, should be %u)\n",
88 buf_size, s->decoder.no_of_bytes);
89 return AVERROR_INVALIDDATA;
90 }
91
a8ea936a 92 frame->nb_samples = s->decoder.blockl;
759001c5 93 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
3641b048
MS
94 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
95 return ret;
96 }
97
a8ea936a 98 WebRtcIlbcfix_DecodeImpl((WebRtc_Word16*) frame->data[0],
3641b048
MS
99 (const WebRtc_UWord16*) buf, &s->decoder, 1);
100
a8ea936a 101 *got_frame_ptr = 1;
3641b048
MS
102
103 return s->decoder.no_of_bytes;
104}
105
106AVCodec ff_libilbc_decoder = {
107 .name = "libilbc",
108 .type = AVMEDIA_TYPE_AUDIO,
36ef5369 109 .id = AV_CODEC_ID_ILBC,
3641b048
MS
110 .priv_data_size = sizeof(ILBCDecContext),
111 .init = ilbc_decode_init,
112 .decode = ilbc_decode_frame,
113 .capabilities = CODEC_CAP_DR1,
0177b7d2 114 .long_name = NULL_IF_CONFIG_SMALL("iLBC (Internet Low Bitrate Codec)"),
3641b048
MS
115 .priv_class = &ilbc_dec_class,
116};
117
118typedef struct ILBCEncContext {
119 const AVClass *class;
120 iLBC_Enc_Inst_t encoder;
121 int mode;
122} ILBCEncContext;
123
124static const AVOption ilbc_enc_options[] = {
e6153f17 125 { "mode", "iLBC mode (20 or 30 ms frames)", offsetof(ILBCEncContext, mode), AV_OPT_TYPE_INT, { .i64 = 20 }, 20, 30, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
3641b048
MS
126 { NULL }
127};
128
129static const AVClass ilbc_enc_class = {
130 "libilbc", av_default_item_name, ilbc_enc_options, LIBAVUTIL_VERSION_INT
131};
132
133static av_cold int ilbc_encode_init(AVCodecContext *avctx)
134{
135 ILBCEncContext *s = avctx->priv_data;
136 int mode;
137
138 if (avctx->sample_rate != 8000) {
139 av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n");
140 return AVERROR(EINVAL);
141 }
142
143 if (avctx->channels != 1) {
144 av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
145 return AVERROR(EINVAL);
146 }
147
148 if ((mode = get_mode(avctx)) > 0)
149 s->mode = mode;
150 else
151 s->mode = s->mode != 30 ? 20 : 30;
152 WebRtcIlbcfix_InitEncode(&s->encoder, s->mode);
153
154 avctx->block_align = s->encoder.no_of_bytes;
155 avctx->frame_size = s->encoder.blockl;
156#if FF_API_OLD_ENCODE_AUDIO
157 avctx->coded_frame = avcodec_alloc_frame();
158 if (!avctx->coded_frame)
159 return AVERROR(ENOMEM);
160#endif
161
162 return 0;
163}
164
165static av_cold int ilbc_encode_close(AVCodecContext *avctx)
166{
167#if FF_API_OLD_ENCODE_AUDIO
168 av_freep(&avctx->coded_frame);
169#endif
170 return 0;
171}
172
173static int ilbc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
174 const AVFrame *frame, int *got_packet_ptr)
175{
176 ILBCEncContext *s = avctx->priv_data;
177 int ret;
178
179 if ((ret = ff_alloc_packet(avpkt, 50))) {
180 av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
181 return ret;
182 }
183
184 WebRtcIlbcfix_EncodeImpl((WebRtc_UWord16*) avpkt->data, (const WebRtc_Word16*) frame->data[0], &s->encoder);
185
186 avpkt->size = s->encoder.no_of_bytes;
187 *got_packet_ptr = 1;
188 return 0;
189}
190
191static const AVCodecDefault ilbc_encode_defaults[] = {
192 { "b", "0" },
193 { NULL }
194};
195
196AVCodec ff_libilbc_encoder = {
197 .name = "libilbc",
198 .type = AVMEDIA_TYPE_AUDIO,
36ef5369 199 .id = AV_CODEC_ID_ILBC,
3641b048
MS
200 .priv_data_size = sizeof(ILBCEncContext),
201 .init = ilbc_encode_init,
202 .encode2 = ilbc_encode_frame,
203 .close = ilbc_encode_close,
204 .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
205 AV_SAMPLE_FMT_NONE },
0177b7d2 206 .long_name = NULL_IF_CONFIG_SMALL("iLBC (Internet Low Bitrate Codec)"),
3641b048
MS
207 .defaults = ilbc_encode_defaults,
208 .priv_class = &ilbc_enc_class,
209};