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Code Issues Releases Activity

avcodec/mlpenc: Make encoders init-threadsafe

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-12-03 01:06:22 +01:00 committed by Andreas Rheinhardt
parent 0166bb12e7
commit 5541cffa17
1 changed files with 19 additions and 17 deletions
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36
libavcodec/mlpenc.c
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@ -27,6 +27,7 @@
#include "libavutil/crc.h"
#include "libavutil/avstring.h"
#include "libavutil/samplefmt.h"
#include "libavutil/thread.h"
#include "mlp.h"
#include "lpc.h"
@ -403,11 +404,9 @@ static void copy_restart_frame_params(MLPEncodeContext *ctx,
}
/** Clears a DecodingParams struct the way it should be after a restart header. */
static void clear_decoding_params(MLPEncodeContext *ctx, DecodingParams decoding_params[MAX_SUBSTREAMS])
static void clear_decoding_params(DecodingParams decoding_params[MAX_SUBSTREAMS], int num_substreams)
{
unsigned int substr;
for (substr = 0; substr < ctx->num_substreams; substr++) {
for (unsigned substr = 0; substr < num_substreams; substr++) {
DecodingParams *dp = &decoding_params[substr];
dp->param_presence_flags = 0xff;
@ -419,11 +418,9 @@ static void clear_decoding_params(MLPEncodeContext *ctx, DecodingParams decoding
}
/** Clears a ChannelParams struct the way it should be after a restart header. */
static void clear_channel_params(MLPEncodeContext *ctx, ChannelParams channel_params[MAX_CHANNELS])
static void clear_channel_params(ChannelParams channel_params[MAX_CHANNELS], int nb_channels)
{
unsigned int channel;
for (channel = 0; channel < ctx->avctx->channels; channel++) {
for (unsigned channel = 0; channel < nb_channels; channel++) {
ChannelParams *cp = &channel_params[channel];
memset(&cp->filter_params, 0, sizeof(cp->filter_params));
@ -441,7 +438,7 @@ static void default_decoding_params(MLPEncodeContext *ctx,
{
unsigned int substr;
clear_decoding_params(ctx, decoding_params);
clear_decoding_params(decoding_params, ctx->num_substreams);
for (substr = 0; substr < ctx->num_substreams; substr++) {
DecodingParams *dp = &decoding_params[substr];
@ -484,8 +481,16 @@ static int mlp_peak_bitrate(int peak_bitrate, int sample_rate)
return ((peak_bitrate << 4) - 8) / sample_rate;
}
static av_cold void mlp_encode_init_static(void)
{
clear_channel_params (restart_channel_params, MAX_CHANNELS);
clear_decoding_params(restart_decoding_params, MAX_SUBSTREAMS);
ff_mlp_init_crc();
}
static av_cold int mlp_encode_init(AVCodecContext *avctx)
{
static AVOnce init_static_once = AV_ONCE_INIT;
MLPEncodeContext *ctx = avctx->priv_data;
unsigned int substr, index;
unsigned int sum = 0;
@ -607,8 +612,6 @@ static av_cold int mlp_encode_init(AVCodecContext *avctx)
return AVERROR(ENOMEM);
}
ff_mlp_init_crc();
ctx->num_substreams = 1; // TODO: change this after adding multi-channel support for TrueHD
if (ctx->avctx->codec_id == AV_CODEC_ID_MLP) {
@ -726,9 +729,6 @@ static av_cold int mlp_encode_init(AVCodecContext *avctx)
rh->max_matrix_channel = rh->max_channel;
}
clear_channel_params(ctx, restart_channel_params);
clear_decoding_params(ctx, restart_decoding_params);
if ((ret = ff_lpc_init(&ctx->lpc_ctx, ctx->number_of_samples,
MLP_MAX_LPC_ORDER, FF_LPC_TYPE_LEVINSON)) < 0) {
av_log(avctx, AV_LOG_ERROR,
@ -738,6 +738,8 @@ static av_cold int mlp_encode_init(AVCodecContext *avctx)
ff_af_queue_init(avctx, &ctx->afq);
ff_thread_once(&init_static_once, mlp_encode_init_static);
return 0;
}
@ -2317,7 +2319,7 @@ input_and_return:
ctx->number_of_samples = number_of_samples;
for (index = 0; index < ctx->seq_size[seq_index]; index++) {
clear_channel_params(ctx, ctx->seq_channel_params + index*(ctx->avctx->channels));
clear_channel_params(ctx->seq_channel_params + index * ctx->avctx->channels, ctx->avctx->channels);
default_decoding_params(ctx, ctx->seq_decoding_params + index*(ctx->num_substreams));
}
@ -2379,7 +2381,7 @@ const AVCodec ff_mlp_encoder = {
.sample_fmts = (const enum AVSampleFormat[]) {AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE},
.supported_samplerates = (const int[]) {44100, 48000, 88200, 96000, 176400, 192000, 0},
.channel_layouts = ff_mlp_channel_layouts,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
};
#endif
#if CONFIG_TRUEHD_ENCODER
@ -2396,6 +2398,6 @@ const AVCodec ff_truehd_encoder = {
.sample_fmts = (const enum AVSampleFormat[]) {AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE},
.supported_samplerates = (const int[]) {44100, 48000, 88200, 96000, 176400, 192000, 0},
.channel_layouts = (const uint64_t[]) {AV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_5POINT0_BACK, AV_CH_LAYOUT_5POINT1_BACK, 0},
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
};
#endif