04d7f601 |
/* |
c1d62489 |
* Copyright (c) 2002 Mark Hills <mark@pogo.org.uk> |
04d7f601 |
* |
b78e7197 |
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
04d7f601 |
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
b78e7197 |
* version 2.1 of the License, or (at your option) any later version. |
04d7f601 |
* |
b78e7197 |
* FFmpeg is distributed in the hope that it will be useful, |
04d7f601 |
* 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 |
b78e7197 |
* License along with FFmpeg; if not, write to the Free Software |
e5a389a1 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
04d7f601 |
*/
|
81e0d0b4 |
#include <vorbis/vorbisenc.h>
|
d014e195 |
#include "libavutil/avassert.h" |
592c4dbc |
#include "libavutil/fifo.h" |
77336a5e |
#include "libavutil/opt.h" |
81e0d0b4 |
#include "avcodec.h" |
e5aab2d7 |
#include "audio_frame_queue.h" |
91a28b0e |
#include "internal.h" |
9577838f |
#include "vorbis.h" |
e5aab2d7 |
#include "vorbis_parser.h" |
81e0d0b4 |
|
3f4993f1 |
|
eb35ef29 |
/* Number of samples the user should send in each call.
* This value is used because it is the LCD of all possible frame sizes, so
* an output packet will always start at the same point as one of the input
* packets.
*/ |
6d8f985e |
#define OGGVORBIS_FRAME_SIZE 64 |
81e0d0b4 |
|
ca5ab8cd |
#define BUFFER_SIZE (1024 * 64) |
81e0d0b4 |
|
c1d62489 |
typedef struct OggVorbisEncContext { |
eb35ef29 |
AVClass *av_class; /**< class for AVOptions */ |
afcb6711 |
AVFrame frame; |
eb35ef29 |
vorbis_info vi; /**< vorbis_info used during init */
vorbis_dsp_state vd; /**< DSP state used for analysis */
vorbis_block vb; /**< vorbis_block used for analysis */ |
592c4dbc |
AVFifoBuffer *pkt_fifo; /**< output packet buffer */ |
eb35ef29 |
int eof; /**< end-of-file flag */ |
f15c4281 |
int dsp_initialized; /**< vd has been initialized */ |
eb35ef29 |
vorbis_comment vc; /**< VorbisComment info */
double iblock; /**< impulse block bias option */ |
e5aab2d7 |
VorbisParseContext vp; /**< parse context to get durations */
AudioFrameQueue afq; /**< frame queue for timestamps */ |
c1d62489 |
} OggVorbisEncContext; |
81e0d0b4 |
|
ca5ab8cd |
static const AVOption options[] = { |
c1d62489 |
{ "iblock", "Sets the impulse block bias", offsetof(OggVorbisEncContext, iblock), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, -15, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, |
ca5ab8cd |
{ NULL } |
77336a5e |
}; |
147ff24a |
static const AVCodecDefault defaults[] = {
{ "b", "0" },
{ NULL },
};
|
bf18abb2 |
static const AVClass vorbis_class = { |
e9d5c052 |
.class_name = "libvorbis",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
}; |
eb35ef29 |
|
6f600ab3 |
static int vorbis_error_to_averror(int ov_err) |
0098e79f |
{ |
6f600ab3 |
switch (ov_err) {
case OV_EFAULT: return AVERROR_BUG;
case OV_EINVAL: return AVERROR(EINVAL);
case OV_EIMPL: return AVERROR(EINVAL);
default: return AVERROR_UNKNOWN; |
0098e79f |
}
}
|
eb35ef29 |
static av_cold int oggvorbis_init_encoder(vorbis_info *vi,
AVCodecContext *avctx) |
ca5ab8cd |
{ |
c1d62489 |
OggVorbisEncContext *s = avctx->priv_data; |
13c71451 |
double cfreq; |
6f600ab3 |
int ret; |
c55427f8 |
|
147ff24a |
if (avctx->flags & CODEC_FLAG_QSCALE || !avctx->bit_rate) { |
eb35ef29 |
/* variable bitrate
* NOTE: we use the oggenc range of -1 to 10 for global_quality for |
147ff24a |
* user convenience, but libvorbis uses -0.1 to 1.0. |
eb35ef29 |
*/
float q = avctx->global_quality / (float)FF_QP2LAMBDA; |
147ff24a |
/* default to 3 if the user did not set quality or bitrate */
if (!(avctx->flags & CODEC_FLAG_QSCALE))
q = 3.0; |
eb35ef29 |
if ((ret = vorbis_encode_setup_vbr(vi, avctx->channels,
avctx->sample_rate, |
6f600ab3 |
q / 10.0)))
goto error; |
13c71451 |
} else { |
eb35ef29 |
int minrate = avctx->rc_min_rate > 0 ? avctx->rc_min_rate : -1; |
182d4f1f |
int maxrate = avctx->rc_max_rate > 0 ? avctx->rc_max_rate : -1; |
e5a5ea9e |
|
eb35ef29 |
/* average bitrate */
if ((ret = vorbis_encode_setup_managed(vi, avctx->channels, |
182d4f1f |
avctx->sample_rate, maxrate,
avctx->bit_rate, minrate))) |
6f600ab3 |
goto error; |
13c71451 |
|
57ebbccf |
/* variable bitrate by estimate, disable slow rate management */ |
ca5ab8cd |
if (minrate == -1 && maxrate == -1) |
6f600ab3 |
if ((ret = vorbis_encode_ctl(vi, OV_ECTL_RATEMANAGE2_SET, NULL))) |
305e4b35 |
goto error; /* should not happen */ |
13c71451 |
} |
c55427f8 |
|
13c71451 |
/* cutoff frequency */ |
eb35ef29 |
if (avctx->cutoff > 0) {
cfreq = avctx->cutoff / 1000.0; |
6f600ab3 |
if ((ret = vorbis_encode_ctl(vi, OV_ECTL_LOWPASS_SET, &cfreq))) |
305e4b35 |
goto error; /* should not happen */ |
13c71451 |
} |
81e0d0b4 |
|
eb35ef29 |
/* impulse block bias */
if (s->iblock) {
if ((ret = vorbis_encode_ctl(vi, OV_ECTL_IBLOCK_SET, &s->iblock))) |
6f600ab3 |
goto error; |
77336a5e |
}
|
79ae084e |
if (avctx->channels == 3 &&
avctx->channel_layout != (AV_CH_LAYOUT_STEREO|AV_CH_FRONT_CENTER) ||
avctx->channels == 4 &&
avctx->channel_layout != AV_CH_LAYOUT_2_2 &&
avctx->channel_layout != AV_CH_LAYOUT_QUAD ||
avctx->channels == 5 &&
avctx->channel_layout != AV_CH_LAYOUT_5POINT0 &&
avctx->channel_layout != AV_CH_LAYOUT_5POINT0_BACK ||
avctx->channels == 6 &&
avctx->channel_layout != AV_CH_LAYOUT_5POINT1 &&
avctx->channel_layout != AV_CH_LAYOUT_5POINT1_BACK ||
avctx->channels == 7 &&
avctx->channel_layout != (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_CENTER) ||
avctx->channels == 8 &&
avctx->channel_layout != AV_CH_LAYOUT_7POINT1) {
if (avctx->channel_layout) { |
7c8c55ff |
char name[32]; |
79ae084e |
av_get_channel_layout_string(name, sizeof(name), avctx->channels,
avctx->channel_layout);
av_log(avctx, AV_LOG_ERROR, "%s not supported by Vorbis: " |
7c8c55ff |
"output stream will have incorrect "
"channel layout.\n", name);
} else { |
79ae084e |
av_log(avctx, AV_LOG_WARNING, "No channel layout specified. The encoder " |
7c8c55ff |
"will use Vorbis channel layout for " |
79ae084e |
"%d channels.\n", avctx->channels); |
7c8c55ff |
}
}
|
6f600ab3 |
if ((ret = vorbis_encode_setup_init(vi)))
goto error;
return 0;
error:
return vorbis_error_to_averror(ret); |
81e0d0b4 |
}
|
fd7242dd |
/* How many bytes are needed for a buffer of length 'l' */ |
ca5ab8cd |
static int xiph_len(int l)
{ |
d4b63054 |
return 1 + l / 255 + l; |
ca5ab8cd |
} |
fd7242dd |
|
eb35ef29 |
static av_cold int oggvorbis_encode_close(AVCodecContext *avctx) |
6f600ab3 |
{ |
c1d62489 |
OggVorbisEncContext *s = avctx->priv_data; |
6f600ab3 |
|
eb35ef29 |
/* notify vorbisenc this is EOF */ |
f15c4281 |
if (s->dsp_initialized)
vorbis_analysis_wrote(&s->vd, 0); |
6f600ab3 |
|
eb35ef29 |
vorbis_block_clear(&s->vb);
vorbis_dsp_clear(&s->vd);
vorbis_info_clear(&s->vi); |
6f600ab3 |
|
592c4dbc |
av_fifo_free(s->pkt_fifo); |
e5aab2d7 |
ff_af_queue_close(&s->afq); |
eb35ef29 |
av_freep(&avctx->extradata); |
6f600ab3 |
return 0;
}
|
eb35ef29 |
static av_cold int oggvorbis_encode_init(AVCodecContext *avctx) |
ca5ab8cd |
{ |
c1d62489 |
OggVorbisEncContext *s = avctx->priv_data; |
bbb77e7c |
ogg_packet header, header_comm, header_code;
uint8_t *p; |
fd7242dd |
unsigned int offset; |
6f600ab3 |
int ret; |
81e0d0b4 |
|
eb35ef29 |
vorbis_info_init(&s->vi);
if ((ret = oggvorbis_init_encoder(&s->vi, avctx))) { |
a45a1ea5 |
av_log(avctx, AV_LOG_ERROR, "encoder setup failed\n"); |
6f600ab3 |
goto error;
} |
eb35ef29 |
if ((ret = vorbis_analysis_init(&s->vd, &s->vi))) { |
a45a1ea5 |
av_log(avctx, AV_LOG_ERROR, "analysis init failed\n"); |
6f600ab3 |
ret = vorbis_error_to_averror(ret);
goto error;
} |
f15c4281 |
s->dsp_initialized = 1; |
eb35ef29 |
if ((ret = vorbis_block_init(&s->vd, &s->vb))) { |
a45a1ea5 |
av_log(avctx, AV_LOG_ERROR, "dsp init failed\n"); |
6f600ab3 |
ret = vorbis_error_to_averror(ret);
goto error; |
81e0d0b4 |
}
|
eb35ef29 |
vorbis_comment_init(&s->vc); |
d9b92980 |
if (!(avctx->flags & CODEC_FLAG_BITEXACT))
vorbis_comment_add_tag(&s->vc, "encoder", LIBAVCODEC_IDENT); |
bbb77e7c |
|
eb35ef29 |
if ((ret = vorbis_analysis_headerout(&s->vd, &s->vc, &header, &header_comm,
&header_code))) { |
6f600ab3 |
ret = vorbis_error_to_averror(ret);
goto error;
} |
115329f1 |
|
eb35ef29 |
avctx->extradata_size = 1 + xiph_len(header.bytes) +
xiph_len(header_comm.bytes) +
header_code.bytes;
p = avctx->extradata = av_malloc(avctx->extradata_size +
FF_INPUT_BUFFER_PADDING_SIZE); |
6f600ab3 |
if (!p) {
ret = AVERROR(ENOMEM);
goto error;
} |
ca5ab8cd |
p[0] = 2;
offset = 1; |
ad2b531d |
offset += av_xiphlacing(&p[offset], header.bytes);
offset += av_xiphlacing(&p[offset], header_comm.bytes);
memcpy(&p[offset], header.packet, header.bytes);
offset += header.bytes;
memcpy(&p[offset], header_comm.packet, header_comm.bytes);
offset += header_comm.bytes;
memcpy(&p[offset], header_code.packet, header_code.bytes);
offset += header_code.bytes; |
d014e195 |
av_assert0(offset == avctx->extradata_size); |
115329f1 |
|
e5aab2d7 |
if ((ret = avpriv_vorbis_parse_extradata(avctx, &s->vp)) < 0) {
av_log(avctx, AV_LOG_ERROR, "invalid extradata\n");
return ret;
}
|
eb35ef29 |
vorbis_comment_clear(&s->vc); |
115329f1 |
|
eb35ef29 |
avctx->frame_size = OGGVORBIS_FRAME_SIZE; |
e5aab2d7 |
ff_af_queue_init(avctx, &s->afq); |
115329f1 |
|
592c4dbc |
s->pkt_fifo = av_fifo_alloc(BUFFER_SIZE);
if (!s->pkt_fifo) {
ret = AVERROR(ENOMEM);
goto error;
} |
115329f1 |
|
ca5ab8cd |
return 0; |
6f600ab3 |
error: |
eb35ef29 |
oggvorbis_encode_close(avctx); |
6f600ab3 |
return ret; |
81e0d0b4 |
}
|
e5aab2d7 |
static int oggvorbis_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
const AVFrame *frame, int *got_packet_ptr) |
81e0d0b4 |
{ |
c1d62489 |
OggVorbisEncContext *s = avctx->priv_data; |
ca5ab8cd |
ogg_packet op; |
e5aab2d7 |
int ret, duration; |
9c8f0768 |
|
eb35ef29 |
/* send samples to libvorbis */ |
e5aab2d7 |
if (frame) {
const int samples = frame->nb_samples; |
ca5ab8cd |
float **buffer; |
eb35ef29 |
int c, channels = s->vi.channels; |
81e0d0b4 |
|
eb35ef29 |
buffer = vorbis_analysis_buffer(&s->vd, samples); |
9577838f |
for (c = 0; c < channels; c++) {
int co = (channels > 8) ? c : |
ca5ab8cd |
ff_vorbis_encoding_channel_layout_offsets[channels - 1][c]; |
cfc0a80a |
memcpy(buffer[c], frame->extended_data[co],
samples * sizeof(*buffer[c])); |
bb270c08 |
} |
a45a1ea5 |
if ((ret = vorbis_analysis_wrote(&s->vd, samples)) < 0) {
av_log(avctx, AV_LOG_ERROR, "error in vorbis_analysis_wrote()\n"); |
94025d8a |
return vorbis_error_to_averror(ret); |
bb270c08 |
} |
bdd71abe |
if ((ret = ff_af_queue_add(&s->afq, frame)) < 0) |
e5aab2d7 |
return ret; |
9c8f0768 |
} else { |
eb35ef29 |
if (!s->eof) |
a45a1ea5 |
if ((ret = vorbis_analysis_wrote(&s->vd, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "error in vorbis_analysis_wrote()\n"); |
94025d8a |
return vorbis_error_to_averror(ret); |
a45a1ea5 |
} |
eb35ef29 |
s->eof = 1; |
9c8f0768 |
} |
81e0d0b4 |
|
eb35ef29 |
/* retrieve available packets from libvorbis */ |
94025d8a |
while ((ret = vorbis_analysis_blockout(&s->vd, &s->vb)) == 1) {
if ((ret = vorbis_analysis(&s->vb, NULL)) < 0)
break;
if ((ret = vorbis_bitrate_addblock(&s->vb)) < 0)
break; |
81e0d0b4 |
|
eb35ef29 |
/* add any available packets to the output packet buffer */ |
94025d8a |
while ((ret = vorbis_bitrate_flushpacket(&s->vd, &op)) == 1) { |
592c4dbc |
if (av_fifo_space(s->pkt_fifo) < sizeof(ogg_packet) + op.bytes) { |
79ae084e |
av_log(avctx, AV_LOG_ERROR, "packet buffer is too small\n"); |
a45a1ea5 |
return AVERROR_BUG; |
c426562c |
} |
592c4dbc |
av_fifo_generic_write(s->pkt_fifo, &op, sizeof(ogg_packet), NULL);
av_fifo_generic_write(s->pkt_fifo, op.packet, op.bytes, NULL); |
bb270c08 |
} |
a45a1ea5 |
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "error getting available packets\n"); |
94025d8a |
break; |
bb270c08 |
} |
81e0d0b4 |
} |
a45a1ea5 |
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "error getting available packets\n"); |
94025d8a |
return vorbis_error_to_averror(ret); |
a45a1ea5 |
} |
81e0d0b4 |
|
e5aab2d7 |
/* check for available packets */
if (av_fifo_size(s->pkt_fifo) < sizeof(ogg_packet))
return 0;
av_fifo_generic_read(s->pkt_fifo, &op, sizeof(ogg_packet), NULL);
|
bcaf64b6 |
if ((ret = ff_alloc_packet2(avctx, avpkt, op.bytes)) < 0) |
e5aab2d7 |
return ret;
av_fifo_generic_read(s->pkt_fifo, avpkt->data, op.bytes, NULL);
avpkt->pts = ff_samples_to_time_base(avctx, op.granulepos);
duration = avpriv_vorbis_parse_frame(&s->vp, avpkt->data, avpkt->size);
if (duration > 0) {
/* we do not know encoder delay until we get the first packet from
* libvorbis, so we have to update the AudioFrameQueue counts */ |
8c414534 |
if (!avctx->delay && s->afq.frames) { |
e5aab2d7 |
avctx->delay = duration; |
2c34367b |
av_assert0(!s->afq.remaining_delay);
s->afq.frames->duration += duration;
s->afq.frames->pts -= duration; |
e5aab2d7 |
s->afq.remaining_samples += duration; |
c426562c |
} |
e5aab2d7 |
ff_af_queue_remove(&s->afq, duration, &avpkt->pts, &avpkt->duration); |
6d8f985e |
}
|
e5aab2d7 |
*got_packet_ptr = 1;
return 0; |
81e0d0b4 |
}
|
e7e2df27 |
AVCodec ff_libvorbis_encoder = { |
86714887 |
.name = "libvorbis",
.type = AVMEDIA_TYPE_AUDIO, |
36ef5369 |
.id = AV_CODEC_ID_VORBIS, |
c1d62489 |
.priv_data_size = sizeof(OggVorbisEncContext), |
86714887 |
.init = oggvorbis_encode_init, |
e5aab2d7 |
.encode2 = oggvorbis_encode_frame, |
86714887 |
.close = oggvorbis_encode_close,
.capabilities = CODEC_CAP_DELAY, |
cfc0a80a |
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP, |
eb35ef29 |
AV_SAMPLE_FMT_NONE }, |
c1d62489 |
.long_name = NULL_IF_CONFIG_SMALL("libvorbis"), |
bf18abb2 |
.priv_class = &vorbis_class, |
147ff24a |
.defaults = defaults, |
86714887 |
}; |