663 lines
23 KiB
C
Executable File
663 lines
23 KiB
C
Executable File
/*
|
|
* Audio Toolbox system codecs
|
|
*
|
|
* copyright (c) 2016 Rodger Combs
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* 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
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <AudioToolbox/AudioToolbox.h>
|
|
|
|
#define FF_BUFQUEUE_SIZE 256
|
|
#include "libavfilter/bufferqueue.h"
|
|
|
|
#include "config.h"
|
|
#include "audio_frame_queue.h"
|
|
#include "avcodec.h"
|
|
#include "bytestream.h"
|
|
#include "internal.h"
|
|
#include "libavformat/isom.h"
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/log.h"
|
|
|
|
typedef struct ATDecodeContext {
|
|
AVClass *av_class;
|
|
int mode;
|
|
int quality;
|
|
|
|
AudioConverterRef converter;
|
|
struct FFBufQueue frame_queue;
|
|
struct FFBufQueue used_frame_queue;
|
|
|
|
unsigned pkt_size;
|
|
AudioFrameQueue afq;
|
|
int eof;
|
|
int frame_size;
|
|
|
|
AVFrame* encoding_frame;
|
|
} ATDecodeContext;
|
|
|
|
static UInt32 ffat_get_format_id(enum AVCodecID codec, int profile)
|
|
{
|
|
switch (codec) {
|
|
case AV_CODEC_ID_AAC:
|
|
switch (profile) {
|
|
case FF_PROFILE_AAC_LOW:
|
|
default:
|
|
return kAudioFormatMPEG4AAC;
|
|
case FF_PROFILE_AAC_HE:
|
|
return kAudioFormatMPEG4AAC_HE;
|
|
case FF_PROFILE_AAC_HE_V2:
|
|
return kAudioFormatMPEG4AAC_HE_V2;
|
|
case FF_PROFILE_AAC_LD:
|
|
return kAudioFormatMPEG4AAC_LD;
|
|
case FF_PROFILE_AAC_ELD:
|
|
return kAudioFormatMPEG4AAC_ELD;
|
|
}
|
|
case AV_CODEC_ID_ADPCM_IMA_QT:
|
|
return kAudioFormatAppleIMA4;
|
|
case AV_CODEC_ID_ALAC:
|
|
return kAudioFormatAppleLossless;
|
|
case AV_CODEC_ID_ILBC:
|
|
return kAudioFormatiLBC;
|
|
case AV_CODEC_ID_PCM_ALAW:
|
|
return kAudioFormatALaw;
|
|
case AV_CODEC_ID_PCM_MULAW:
|
|
return kAudioFormatULaw;
|
|
default:
|
|
av_assert0(!"Invalid codec ID!");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static void ffat_update_ctx(AVCodecContext *avctx)
|
|
{
|
|
ATDecodeContext *at = avctx->priv_data;
|
|
UInt32 size = sizeof(unsigned);
|
|
AudioConverterPrimeInfo prime_info;
|
|
AudioStreamBasicDescription out_format;
|
|
|
|
AudioConverterGetProperty(at->converter,
|
|
kAudioConverterPropertyMaximumOutputPacketSize,
|
|
&size, &at->pkt_size);
|
|
|
|
if (at->pkt_size <= 0)
|
|
at->pkt_size = 1024 * 50;
|
|
|
|
size = sizeof(prime_info);
|
|
|
|
if (!AudioConverterGetProperty(at->converter,
|
|
kAudioConverterPrimeInfo,
|
|
&size, &prime_info)) {
|
|
avctx->initial_padding = prime_info.leadingFrames;
|
|
}
|
|
|
|
size = sizeof(out_format);
|
|
if (!AudioConverterGetProperty(at->converter,
|
|
kAudioConverterCurrentOutputStreamDescription,
|
|
&size, &out_format)) {
|
|
if (out_format.mFramesPerPacket)
|
|
avctx->frame_size = out_format.mFramesPerPacket;
|
|
if (out_format.mBytesPerPacket && avctx->codec_id == AV_CODEC_ID_ILBC)
|
|
avctx->block_align = out_format.mBytesPerPacket;
|
|
}
|
|
|
|
at->frame_size = avctx->frame_size;
|
|
if (avctx->codec_id == AV_CODEC_ID_PCM_MULAW ||
|
|
avctx->codec_id == AV_CODEC_ID_PCM_ALAW) {
|
|
at->pkt_size *= 1024;
|
|
avctx->frame_size *= 1024;
|
|
}
|
|
}
|
|
|
|
static int read_descr(GetByteContext *gb, int *tag)
|
|
{
|
|
int len = 0;
|
|
int count = 4;
|
|
*tag = bytestream2_get_byte(gb);
|
|
while (count--) {
|
|
int c = bytestream2_get_byte(gb);
|
|
len = (len << 7) | (c & 0x7f);
|
|
if (!(c & 0x80))
|
|
break;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static int get_ilbc_mode(AVCodecContext *avctx)
|
|
{
|
|
if (avctx->block_align == 38)
|
|
return 20;
|
|
else if (avctx->block_align == 50)
|
|
return 30;
|
|
else if (avctx->bit_rate > 0)
|
|
return avctx->bit_rate <= 14000 ? 30 : 20;
|
|
else
|
|
return 30;
|
|
}
|
|
|
|
static av_cold int get_channel_label(int channel)
|
|
{
|
|
uint64_t map = 1 << channel;
|
|
if (map <= AV_CH_LOW_FREQUENCY)
|
|
return channel + 1;
|
|
else if (map <= AV_CH_BACK_RIGHT)
|
|
return channel + 29;
|
|
else if (map <= AV_CH_BACK_CENTER)
|
|
return channel - 1;
|
|
else if (map <= AV_CH_SIDE_RIGHT)
|
|
return channel - 4;
|
|
else if (map <= AV_CH_TOP_BACK_RIGHT)
|
|
return channel + 1;
|
|
else if (map <= AV_CH_STEREO_RIGHT)
|
|
return -1;
|
|
else if (map <= AV_CH_WIDE_RIGHT)
|
|
return channel + 4;
|
|
else if (map <= AV_CH_SURROUND_DIRECT_RIGHT)
|
|
return channel - 23;
|
|
else if (map == AV_CH_LOW_FREQUENCY_2)
|
|
return kAudioChannelLabel_LFE2;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
static int remap_layout(AudioChannelLayout *layout, uint64_t in_layout, int count)
|
|
{
|
|
int i;
|
|
int c = 0;
|
|
layout->mChannelLayoutTag = kAudioChannelLayoutTag_UseChannelDescriptions;
|
|
layout->mNumberChannelDescriptions = count;
|
|
for (i = 0; i < count; i++) {
|
|
int label;
|
|
while (!(in_layout & (1 << c)) && c < 64)
|
|
c++;
|
|
if (c == 64)
|
|
return AVERROR(EINVAL); // This should never happen
|
|
label = get_channel_label(c);
|
|
layout->mChannelDescriptions[i].mChannelLabel = label;
|
|
if (label < 0)
|
|
return AVERROR(EINVAL);
|
|
c++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int get_aac_tag(uint64_t in_layout)
|
|
{
|
|
switch (in_layout) {
|
|
case AV_CH_LAYOUT_MONO:
|
|
return kAudioChannelLayoutTag_Mono;
|
|
case AV_CH_LAYOUT_STEREO:
|
|
return kAudioChannelLayoutTag_Stereo;
|
|
case AV_CH_LAYOUT_QUAD:
|
|
return kAudioChannelLayoutTag_AAC_Quadraphonic;
|
|
case AV_CH_LAYOUT_OCTAGONAL:
|
|
return kAudioChannelLayoutTag_AAC_Octagonal;
|
|
case AV_CH_LAYOUT_SURROUND:
|
|
return kAudioChannelLayoutTag_AAC_3_0;
|
|
case AV_CH_LAYOUT_4POINT0:
|
|
return kAudioChannelLayoutTag_AAC_4_0;
|
|
case AV_CH_LAYOUT_5POINT0:
|
|
return kAudioChannelLayoutTag_AAC_5_0;
|
|
case AV_CH_LAYOUT_5POINT1:
|
|
return kAudioChannelLayoutTag_AAC_5_1;
|
|
case AV_CH_LAYOUT_6POINT0:
|
|
return kAudioChannelLayoutTag_AAC_6_0;
|
|
case AV_CH_LAYOUT_6POINT1:
|
|
return kAudioChannelLayoutTag_AAC_6_1;
|
|
case AV_CH_LAYOUT_7POINT0:
|
|
return kAudioChannelLayoutTag_AAC_7_0;
|
|
case AV_CH_LAYOUT_7POINT1_WIDE_BACK:
|
|
return kAudioChannelLayoutTag_AAC_7_1;
|
|
case AV_CH_LAYOUT_7POINT1:
|
|
return kAudioChannelLayoutTag_MPEG_7_1_C;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static av_cold int ffat_init_encoder(AVCodecContext *avctx)
|
|
{
|
|
ATDecodeContext *at = avctx->priv_data;
|
|
OSStatus status;
|
|
|
|
AudioStreamBasicDescription in_format = {
|
|
.mSampleRate = avctx->sample_rate,
|
|
.mFormatID = kAudioFormatLinearPCM,
|
|
.mFormatFlags = ((avctx->sample_fmt == AV_SAMPLE_FMT_FLT ||
|
|
avctx->sample_fmt == AV_SAMPLE_FMT_DBL) ? kAudioFormatFlagIsFloat
|
|
: avctx->sample_fmt == AV_SAMPLE_FMT_U8 ? 0
|
|
: kAudioFormatFlagIsSignedInteger)
|
|
| kAudioFormatFlagIsPacked,
|
|
.mBytesPerPacket = av_get_bytes_per_sample(avctx->sample_fmt) * avctx->channels,
|
|
.mFramesPerPacket = 1,
|
|
.mBytesPerFrame = av_get_bytes_per_sample(avctx->sample_fmt) * avctx->channels,
|
|
.mChannelsPerFrame = avctx->channels,
|
|
.mBitsPerChannel = av_get_bytes_per_sample(avctx->sample_fmt) * 8,
|
|
};
|
|
AudioStreamBasicDescription out_format = {
|
|
.mSampleRate = avctx->sample_rate,
|
|
.mFormatID = ffat_get_format_id(avctx->codec_id, avctx->profile),
|
|
.mChannelsPerFrame = in_format.mChannelsPerFrame,
|
|
};
|
|
UInt32 layout_size = sizeof(AudioChannelLayout) +
|
|
sizeof(AudioChannelDescription) * avctx->channels;
|
|
AudioChannelLayout *channel_layout = av_malloc(layout_size);
|
|
|
|
if (!channel_layout)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (avctx->codec_id == AV_CODEC_ID_ILBC) {
|
|
int mode = get_ilbc_mode(avctx);
|
|
out_format.mFramesPerPacket = 8000 * mode / 1000;
|
|
out_format.mBytesPerPacket = (mode == 20 ? 38 : 50);
|
|
}
|
|
|
|
status = AudioConverterNew(&in_format, &out_format, &at->converter);
|
|
|
|
if (status != 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "AudioToolbox init error: %i\n", (int)status);
|
|
av_free(channel_layout);
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
|
|
if (!avctx->channel_layout)
|
|
avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
|
|
|
|
if ((status = remap_layout(channel_layout, avctx->channel_layout, avctx->channels)) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid channel layout\n");
|
|
av_free(channel_layout);
|
|
return status;
|
|
}
|
|
|
|
if (AudioConverterSetProperty(at->converter, kAudioConverterInputChannelLayout,
|
|
layout_size, channel_layout)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Unsupported input channel layout\n");
|
|
av_free(channel_layout);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (avctx->codec_id == AV_CODEC_ID_AAC) {
|
|
int tag = get_aac_tag(avctx->channel_layout);
|
|
if (tag) {
|
|
channel_layout->mChannelLayoutTag = tag;
|
|
channel_layout->mNumberChannelDescriptions = 0;
|
|
}
|
|
}
|
|
if (AudioConverterSetProperty(at->converter, kAudioConverterOutputChannelLayout,
|
|
layout_size, channel_layout)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Unsupported output channel layout\n");
|
|
av_free(channel_layout);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
av_free(channel_layout);
|
|
|
|
if (avctx->bits_per_raw_sample)
|
|
AudioConverterSetProperty(at->converter,
|
|
kAudioConverterPropertyBitDepthHint,
|
|
sizeof(avctx->bits_per_raw_sample),
|
|
&avctx->bits_per_raw_sample);
|
|
|
|
#if !TARGET_OS_IPHONE
|
|
if (at->mode == -1)
|
|
at->mode = (avctx->flags & AV_CODEC_FLAG_QSCALE) ?
|
|
kAudioCodecBitRateControlMode_Variable :
|
|
kAudioCodecBitRateControlMode_Constant;
|
|
|
|
AudioConverterSetProperty(at->converter, kAudioCodecPropertyBitRateControlMode,
|
|
sizeof(at->mode), &at->mode);
|
|
|
|
if (at->mode == kAudioCodecBitRateControlMode_Variable) {
|
|
int q = avctx->global_quality / FF_QP2LAMBDA;
|
|
if (q < 0 || q > 14) {
|
|
av_log(avctx, AV_LOG_WARNING,
|
|
"VBR quality %d out of range, should be 0-14\n", q);
|
|
q = av_clip(q, 0, 14);
|
|
}
|
|
q = 127 - q * 9;
|
|
AudioConverterSetProperty(at->converter, kAudioCodecPropertySoundQualityForVBR,
|
|
sizeof(q), &q);
|
|
} else
|
|
#endif
|
|
if (avctx->bit_rate > 0) {
|
|
UInt32 rate = avctx->bit_rate;
|
|
UInt32 size;
|
|
status = AudioConverterGetPropertyInfo(at->converter,
|
|
kAudioConverterApplicableEncodeBitRates,
|
|
&size, NULL);
|
|
if (!status && size) {
|
|
UInt32 new_rate = rate;
|
|
int count;
|
|
int i;
|
|
AudioValueRange *ranges = av_malloc(size);
|
|
if (!ranges)
|
|
return AVERROR(ENOMEM);
|
|
AudioConverterGetProperty(at->converter,
|
|
kAudioConverterApplicableEncodeBitRates,
|
|
&size, ranges);
|
|
count = size / sizeof(AudioValueRange);
|
|
for (i = 0; i < count; i++) {
|
|
AudioValueRange *range = &ranges[i];
|
|
if (rate >= range->mMinimum && rate <= range->mMaximum) {
|
|
new_rate = rate;
|
|
break;
|
|
} else if (rate > range->mMaximum) {
|
|
new_rate = range->mMaximum;
|
|
} else {
|
|
new_rate = range->mMinimum;
|
|
break;
|
|
}
|
|
}
|
|
if (new_rate != rate) {
|
|
av_log(avctx, AV_LOG_WARNING,
|
|
"Bitrate %u not allowed; changing to %u\n", rate, new_rate);
|
|
rate = new_rate;
|
|
}
|
|
av_free(ranges);
|
|
}
|
|
AudioConverterSetProperty(at->converter, kAudioConverterEncodeBitRate,
|
|
sizeof(rate), &rate);
|
|
}
|
|
|
|
at->quality = 96 - at->quality * 32;
|
|
AudioConverterSetProperty(at->converter, kAudioConverterCodecQuality,
|
|
sizeof(at->quality), &at->quality);
|
|
|
|
if (!AudioConverterGetPropertyInfo(at->converter, kAudioConverterCompressionMagicCookie,
|
|
&avctx->extradata_size, NULL) &&
|
|
avctx->extradata_size) {
|
|
int extradata_size = avctx->extradata_size;
|
|
uint8_t *extradata;
|
|
if (!(avctx->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE)))
|
|
return AVERROR(ENOMEM);
|
|
if (avctx->codec_id == AV_CODEC_ID_ALAC) {
|
|
avctx->extradata_size = 0x24;
|
|
AV_WB32(avctx->extradata, 0x24);
|
|
AV_WB32(avctx->extradata + 4, MKBETAG('a','l','a','c'));
|
|
extradata = avctx->extradata + 12;
|
|
avctx->extradata_size = 0x24;
|
|
} else {
|
|
extradata = avctx->extradata;
|
|
}
|
|
status = AudioConverterGetProperty(at->converter,
|
|
kAudioConverterCompressionMagicCookie,
|
|
&extradata_size, extradata);
|
|
if (status != 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "AudioToolbox cookie error: %i\n", (int)status);
|
|
return AVERROR_UNKNOWN;
|
|
} else if (avctx->codec_id == AV_CODEC_ID_AAC) {
|
|
GetByteContext gb;
|
|
int tag, len;
|
|
bytestream2_init(&gb, extradata, extradata_size);
|
|
do {
|
|
len = read_descr(&gb, &tag);
|
|
if (tag == MP4DecConfigDescrTag) {
|
|
bytestream2_skip(&gb, 13);
|
|
len = read_descr(&gb, &tag);
|
|
if (tag == MP4DecSpecificDescrTag) {
|
|
len = FFMIN(gb.buffer_end - gb.buffer, len);
|
|
memmove(extradata, gb.buffer, len);
|
|
avctx->extradata_size = len;
|
|
break;
|
|
}
|
|
} else if (tag == MP4ESDescrTag) {
|
|
int flags;
|
|
bytestream2_skip(&gb, 2);
|
|
flags = bytestream2_get_byte(&gb);
|
|
if (flags & 0x80) //streamDependenceFlag
|
|
bytestream2_skip(&gb, 2);
|
|
if (flags & 0x40) //URL_Flag
|
|
bytestream2_skip(&gb, bytestream2_get_byte(&gb));
|
|
if (flags & 0x20) //OCRstreamFlag
|
|
bytestream2_skip(&gb, 2);
|
|
}
|
|
} while (bytestream2_get_bytes_left(&gb));
|
|
} else if (avctx->codec_id != AV_CODEC_ID_ALAC) {
|
|
avctx->extradata_size = extradata_size;
|
|
}
|
|
}
|
|
|
|
ffat_update_ctx(avctx);
|
|
|
|
#if !TARGET_OS_IPHONE && defined(__MAC_10_9)
|
|
if (at->mode == kAudioCodecBitRateControlMode_Variable && avctx->rc_max_rate) {
|
|
UInt32 max_size = avctx->rc_max_rate * avctx->frame_size / avctx->sample_rate;
|
|
if (max_size)
|
|
AudioConverterSetProperty(at->converter, kAudioCodecPropertyPacketSizeLimitForVBR,
|
|
sizeof(max_size), &max_size);
|
|
}
|
|
#endif
|
|
|
|
ff_af_queue_init(avctx, &at->afq);
|
|
|
|
at->encoding_frame = av_frame_alloc();
|
|
if (!at->encoding_frame)
|
|
return AVERROR(ENOMEM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static OSStatus ffat_encode_callback(AudioConverterRef converter, UInt32 *nb_packets,
|
|
AudioBufferList *data,
|
|
AudioStreamPacketDescription **packets,
|
|
void *inctx)
|
|
{
|
|
AVCodecContext *avctx = inctx;
|
|
ATDecodeContext *at = avctx->priv_data;
|
|
AVFrame *frame;
|
|
int ret;
|
|
|
|
if (!at->frame_queue.available) {
|
|
if (at->eof) {
|
|
*nb_packets = 0;
|
|
return 0;
|
|
} else {
|
|
*nb_packets = 0;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
frame = ff_bufqueue_get(&at->frame_queue);
|
|
|
|
data->mNumberBuffers = 1;
|
|
data->mBuffers[0].mNumberChannels = avctx->channels;
|
|
data->mBuffers[0].mDataByteSize = frame->nb_samples *
|
|
av_get_bytes_per_sample(avctx->sample_fmt) *
|
|
avctx->channels;
|
|
data->mBuffers[0].mData = frame->data[0];
|
|
if (*nb_packets > frame->nb_samples)
|
|
*nb_packets = frame->nb_samples;
|
|
|
|
av_frame_unref(at->encoding_frame);
|
|
ret = av_frame_ref(at->encoding_frame, frame);
|
|
if (ret < 0) {
|
|
*nb_packets = 0;
|
|
return ret;
|
|
}
|
|
|
|
ff_bufqueue_add(avctx, &at->used_frame_queue, frame);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ffat_encode(AVCodecContext *avctx, AVPacket *avpkt,
|
|
const AVFrame *frame, int *got_packet_ptr)
|
|
{
|
|
ATDecodeContext *at = avctx->priv_data;
|
|
OSStatus ret;
|
|
|
|
AudioBufferList out_buffers = {
|
|
.mNumberBuffers = 1,
|
|
.mBuffers = {
|
|
{
|
|
.mNumberChannels = avctx->channels,
|
|
.mDataByteSize = at->pkt_size,
|
|
}
|
|
}
|
|
};
|
|
AudioStreamPacketDescription out_pkt_desc = {0};
|
|
|
|
if (frame) {
|
|
AVFrame *in_frame;
|
|
|
|
if (ff_bufqueue_is_full(&at->frame_queue)) {
|
|
/*
|
|
* The frame queue is significantly larger than needed in practice,
|
|
* but no clear way to determine the minimum number of samples to
|
|
* get output from AudioConverterFillComplexBuffer().
|
|
*/
|
|
av_log(avctx, AV_LOG_ERROR, "Bug: frame queue is too small.\n");
|
|
return AVERROR_BUG;
|
|
}
|
|
|
|
if ((ret = ff_af_queue_add(&at->afq, frame)) < 0)
|
|
return ret;
|
|
|
|
in_frame = av_frame_clone(frame);
|
|
if (!in_frame)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ff_bufqueue_add(avctx, &at->frame_queue, in_frame);
|
|
} else {
|
|
at->eof = 1;
|
|
}
|
|
|
|
if ((ret = ff_alloc_packet2(avctx, avpkt, at->pkt_size, 0)) < 0)
|
|
return ret;
|
|
|
|
|
|
out_buffers.mBuffers[0].mData = avpkt->data;
|
|
|
|
*got_packet_ptr = avctx->frame_size / at->frame_size;
|
|
|
|
ret = AudioConverterFillComplexBuffer(at->converter, ffat_encode_callback, avctx,
|
|
got_packet_ptr, &out_buffers,
|
|
(avctx->frame_size > at->frame_size) ? NULL : &out_pkt_desc);
|
|
|
|
ff_bufqueue_discard_all(&at->used_frame_queue);
|
|
|
|
if ((!ret || ret == 1) && *got_packet_ptr) {
|
|
avpkt->size = out_buffers.mBuffers[0].mDataByteSize;
|
|
ff_af_queue_remove(&at->afq, out_pkt_desc.mVariableFramesInPacket ?
|
|
out_pkt_desc.mVariableFramesInPacket :
|
|
avctx->frame_size,
|
|
&avpkt->pts,
|
|
&avpkt->duration);
|
|
} else if (ret && ret != 1) {
|
|
av_log(avctx, AV_LOG_WARNING, "Encode error: %i\n", ret);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold void ffat_encode_flush(AVCodecContext *avctx)
|
|
{
|
|
ATDecodeContext *at = avctx->priv_data;
|
|
AudioConverterReset(at->converter);
|
|
ff_bufqueue_discard_all(&at->frame_queue);
|
|
ff_bufqueue_discard_all(&at->used_frame_queue);
|
|
}
|
|
|
|
static av_cold int ffat_close_encoder(AVCodecContext *avctx)
|
|
{
|
|
ATDecodeContext *at = avctx->priv_data;
|
|
AudioConverterDispose(at->converter);
|
|
ff_bufqueue_discard_all(&at->frame_queue);
|
|
ff_bufqueue_discard_all(&at->used_frame_queue);
|
|
ff_af_queue_close(&at->afq);
|
|
av_frame_free(&at->encoding_frame);
|
|
return 0;
|
|
}
|
|
|
|
static const AVProfile aac_profiles[] = {
|
|
{ FF_PROFILE_AAC_LOW, "LC" },
|
|
{ FF_PROFILE_AAC_HE, "HE-AAC" },
|
|
{ FF_PROFILE_AAC_HE_V2, "HE-AACv2" },
|
|
{ FF_PROFILE_AAC_LD, "LD" },
|
|
{ FF_PROFILE_AAC_ELD, "ELD" },
|
|
{ FF_PROFILE_UNKNOWN },
|
|
};
|
|
|
|
#define AE AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
|
|
static const AVOption options[] = {
|
|
#if !TARGET_OS_IPHONE
|
|
{"aac_at_mode", "ratecontrol mode", offsetof(ATDecodeContext, mode), AV_OPT_TYPE_INT, {.i64 = -1}, -1, kAudioCodecBitRateControlMode_Variable, AE, "mode"},
|
|
{"auto", "VBR if global quality is given; CBR otherwise", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, INT_MIN, INT_MAX, AE, "mode"},
|
|
{"cbr", "constant bitrate", 0, AV_OPT_TYPE_CONST, {.i64 = kAudioCodecBitRateControlMode_Constant}, INT_MIN, INT_MAX, AE, "mode"},
|
|
{"abr", "long-term average bitrate", 0, AV_OPT_TYPE_CONST, {.i64 = kAudioCodecBitRateControlMode_LongTermAverage}, INT_MIN, INT_MAX, AE, "mode"},
|
|
{"cvbr", "constrained variable bitrate", 0, AV_OPT_TYPE_CONST, {.i64 = kAudioCodecBitRateControlMode_VariableConstrained}, INT_MIN, INT_MAX, AE, "mode"},
|
|
{"vbr" , "variable bitrate", 0, AV_OPT_TYPE_CONST, {.i64 = kAudioCodecBitRateControlMode_Variable}, INT_MIN, INT_MAX, AE, "mode"},
|
|
#endif
|
|
{"aac_at_quality", "quality vs speed control", offsetof(ATDecodeContext, quality), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 2, AE},
|
|
{ NULL },
|
|
};
|
|
|
|
#define FFAT_ENC_CLASS(NAME) \
|
|
static const AVClass ffat_##NAME##_enc_class = { \
|
|
.class_name = "at_" #NAME "_enc", \
|
|
.item_name = av_default_item_name, \
|
|
.option = options, \
|
|
.version = LIBAVUTIL_VERSION_INT, \
|
|
};
|
|
|
|
#define FFAT_ENC(NAME, ID, PROFILES, ...) \
|
|
FFAT_ENC_CLASS(NAME) \
|
|
AVCodec ff_##NAME##_at_encoder = { \
|
|
.name = #NAME "_at", \
|
|
.long_name = NULL_IF_CONFIG_SMALL(#NAME " (AudioToolbox)"), \
|
|
.type = AVMEDIA_TYPE_AUDIO, \
|
|
.id = ID, \
|
|
.priv_data_size = sizeof(ATDecodeContext), \
|
|
.init = ffat_init_encoder, \
|
|
.close = ffat_close_encoder, \
|
|
.encode2 = ffat_encode, \
|
|
.flush = ffat_encode_flush, \
|
|
.priv_class = &ffat_##NAME##_enc_class, \
|
|
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | \
|
|
AV_CODEC_CAP_ENCODER_FLUSH __VA_ARGS__, \
|
|
.sample_fmts = (const enum AVSampleFormat[]) { \
|
|
AV_SAMPLE_FMT_S16, \
|
|
AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_NONE \
|
|
}, \
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, \
|
|
.profiles = PROFILES, \
|
|
.wrapper_name = "at", \
|
|
};
|
|
|
|
static const uint64_t aac_at_channel_layouts[] = {
|
|
AV_CH_LAYOUT_MONO,
|
|
AV_CH_LAYOUT_STEREO,
|
|
AV_CH_LAYOUT_SURROUND,
|
|
AV_CH_LAYOUT_4POINT0,
|
|
AV_CH_LAYOUT_5POINT0,
|
|
AV_CH_LAYOUT_5POINT1,
|
|
AV_CH_LAYOUT_6POINT0,
|
|
AV_CH_LAYOUT_6POINT1,
|
|
AV_CH_LAYOUT_7POINT0,
|
|
AV_CH_LAYOUT_7POINT1_WIDE_BACK,
|
|
AV_CH_LAYOUT_QUAD,
|
|
AV_CH_LAYOUT_OCTAGONAL,
|
|
0,
|
|
};
|
|
|
|
FFAT_ENC(aac, AV_CODEC_ID_AAC, aac_profiles, , .channel_layouts = aac_at_channel_layouts)
|
|
//FFAT_ENC(adpcm_ima_qt, AV_CODEC_ID_ADPCM_IMA_QT, NULL)
|
|
FFAT_ENC(alac, AV_CODEC_ID_ALAC, NULL, | AV_CODEC_CAP_VARIABLE_FRAME_SIZE)
|
|
FFAT_ENC(ilbc, AV_CODEC_ID_ILBC, NULL)
|
|
FFAT_ENC(pcm_alaw, AV_CODEC_ID_PCM_ALAW, NULL)
|
|
FFAT_ENC(pcm_mulaw, AV_CODEC_ID_PCM_MULAW, NULL)
|