#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/internal.h"
+#include "libavutil/mem_internal.h"
#include "libavutil/opt.h"
+#include "libavutil/thread.h"
#include "avcodec.h"
#include "internal.h"
#include "me_cmp.h"
#define EXTMIXLEV_NUM_OPTIONS 8
static const float extmixlev_options[EXTMIXLEV_NUM_OPTIONS] = {
- LEVEL_PLUS_3DB, LEVEL_PLUS_1POINT5DB, LEVEL_ONE, LEVEL_MINUS_4POINT5DB,
+ LEVEL_PLUS_3DB, LEVEL_PLUS_1POINT5DB, LEVEL_ONE, LEVEL_MINUS_1POINT5DB,
LEVEL_MINUS_3DB, LEVEL_MINUS_4POINT5DB, LEVEL_MINUS_6DB, LEVEL_ZERO
};
+/* The first two options apply only to the AC-3 encoders;
+ * the rest is also valid for EAC-3. When modifying it,
+ * it might be necessary to adapt said offset in eac3enc.c. */
+#define OFFSET(param) offsetof(AC3EncodeContext, options.param)
+#define AC3ENC_PARAM (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
+const AVOption ff_ac3_enc_options[] = {
+/* AC-3 downmix levels */
+{"center_mixlev", "Center Mix Level", OFFSET(center_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = LEVEL_MINUS_4POINT5DB }, 0.0, 1.0, AC3ENC_PARAM},
+{"surround_mixlev", "Surround Mix Level", OFFSET(surround_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = LEVEL_MINUS_6DB }, 0.0, 1.0, AC3ENC_PARAM},
+/* audio production information */
+{"mixing_level", "Mixing Level", OFFSET(mixing_level), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, 111, AC3ENC_PARAM},
+{"room_type", "Room Type", OFFSET(room_type), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, AC3ENC_OPT_SMALL_ROOM, AC3ENC_PARAM, "room_type"},
+ {"notindicated", "Not Indicated (default)", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_NOT_INDICATED }, INT_MIN, INT_MAX, AC3ENC_PARAM, "room_type"},
+ {"large", "Large Room", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_LARGE_ROOM }, INT_MIN, INT_MAX, AC3ENC_PARAM, "room_type"},
+ {"small", "Small Room", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_SMALL_ROOM }, INT_MIN, INT_MAX, AC3ENC_PARAM, "room_type"},
+/* Metadata Options */
+{"per_frame_metadata", "Allow Changing Metadata Per-Frame", OFFSET(allow_per_frame_metadata), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, AC3ENC_PARAM},
+{"copyright", "Copyright Bit", OFFSET(copyright), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, 1, AC3ENC_PARAM},
+{"dialnorm", "Dialogue Level (dB)", OFFSET(dialogue_level), AV_OPT_TYPE_INT, {.i64 = -31 }, -31, -1, AC3ENC_PARAM},
+{"dsur_mode", "Dolby Surround Mode", OFFSET(dolby_surround_mode), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, AC3ENC_OPT_MODE_ON, AC3ENC_PARAM, "dsur_mode"},
+ {"notindicated", "Not Indicated (default)", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_NOT_INDICATED }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dsur_mode"},
+ {"on", "Dolby Surround Encoded", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_MODE_ON }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dsur_mode"},
+ {"off", "Not Dolby Surround Encoded", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_MODE_OFF }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dsur_mode"},
+{"original", "Original Bit Stream", OFFSET(original), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, 1, AC3ENC_PARAM},
+/* extended bitstream information */
+{"dmix_mode", "Preferred Stereo Downmix Mode", OFFSET(preferred_stereo_downmix), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, AC3ENC_OPT_DOWNMIX_DPLII, AC3ENC_PARAM, "dmix_mode"},
+ {"notindicated", "Not Indicated (default)", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_NOT_INDICATED }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dmix_mode"},
+ {"ltrt", "Lt/Rt Downmix Preferred", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_DOWNMIX_LTRT }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dmix_mode"},
+ {"loro", "Lo/Ro Downmix Preferred", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_DOWNMIX_LORO }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dmix_mode"},
+ {"dplii", "Dolby Pro Logic II Downmix Preferred", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_DOWNMIX_DPLII }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dmix_mode"},
+{"ltrt_cmixlev", "Lt/Rt Center Mix Level", OFFSET(ltrt_center_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, AC3ENC_PARAM},
+{"ltrt_surmixlev", "Lt/Rt Surround Mix Level", OFFSET(ltrt_surround_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, AC3ENC_PARAM},
+{"loro_cmixlev", "Lo/Ro Center Mix Level", OFFSET(loro_center_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, AC3ENC_PARAM},
+{"loro_surmixlev", "Lo/Ro Surround Mix Level", OFFSET(loro_surround_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, AC3ENC_PARAM},
+{"dsurex_mode", "Dolby Surround EX Mode", OFFSET(dolby_surround_ex_mode), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, AC3ENC_OPT_DSUREX_DPLIIZ, AC3ENC_PARAM, "dsurex_mode"},
+ {"notindicated", "Not Indicated (default)", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_NOT_INDICATED }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dsurex_mode"},
+ {"on", "Dolby Surround EX Encoded", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_MODE_ON }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dsurex_mode"},
+ {"off", "Not Dolby Surround EX Encoded", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_MODE_OFF }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dsurex_mode"},
+ {"dpliiz", "Dolby Pro Logic IIz-encoded", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_DSUREX_DPLIIZ }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dsurex_mode"},
+{"dheadphone_mode", "Dolby Headphone Mode", OFFSET(dolby_headphone_mode), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, AC3ENC_OPT_MODE_ON, AC3ENC_PARAM, "dheadphone_mode"},
+ {"notindicated", "Not Indicated (default)", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_NOT_INDICATED }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dheadphone_mode"},
+ {"on", "Dolby Headphone Encoded", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_MODE_ON }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dheadphone_mode"},
+ {"off", "Not Dolby Headphone Encoded", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_MODE_OFF }, INT_MIN, INT_MAX, AC3ENC_PARAM, "dheadphone_mode"},
+{"ad_conv_type", "A/D Converter Type", OFFSET(ad_converter_type), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_NONE }, AC3ENC_OPT_NONE, AC3ENC_OPT_ADCONV_HDCD, AC3ENC_PARAM, "ad_conv_type"},
+ {"standard", "Standard (default)", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_ADCONV_STANDARD }, INT_MIN, INT_MAX, AC3ENC_PARAM, "ad_conv_type"},
+ {"hdcd", "HDCD", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_ADCONV_HDCD }, INT_MIN, INT_MAX, AC3ENC_PARAM, "ad_conv_type"},
+/* Other Encoding Options */
+{"stereo_rematrixing", "Stereo Rematrixing", OFFSET(stereo_rematrixing), AV_OPT_TYPE_BOOL, {.i64 = 1 }, 0, 1, AC3ENC_PARAM},
+{"channel_coupling", "Channel Coupling", OFFSET(channel_coupling), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_AUTO }, AC3ENC_OPT_AUTO, AC3ENC_OPT_ON, AC3ENC_PARAM, "channel_coupling"},
+ {"auto", "Selected by the Encoder", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_AUTO }, INT_MIN, INT_MAX, AC3ENC_PARAM, "channel_coupling"},
+{"cpl_start_band", "Coupling Start Band", OFFSET(cpl_start), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_AUTO }, AC3ENC_OPT_AUTO, 15, AC3ENC_PARAM, "cpl_start_band"},
+ {"auto", "Selected by the Encoder", 0, AV_OPT_TYPE_CONST, {.i64 = AC3ENC_OPT_AUTO }, INT_MIN, INT_MAX, AC3ENC_PARAM, "cpl_start_band"},
+{NULL}
+};
+
+const AVCodecDefault ff_ac3_enc_defaults[] = {
+ { "b", "0" },
+ { NULL }
+};
/**
* LUT for number of exponent groups.
*
* @param s AC-3 encoder private context
*/
-void ff_ac3_apply_rematrixing(AC3EncodeContext *s)
+static void ac3_apply_rematrixing(AC3EncodeContext *s)
{
int nb_coefs;
int blk, bnd, i;
/*
* Initialize exponent tables.
*/
-static av_cold void exponent_init(AC3EncodeContext *s)
+static av_cold void exponent_init(void)
{
int expstr, i, grpsize;
}
/* LFE */
exponent_group_tab[0][0][7] = 2;
-
- if (CONFIG_EAC3_ENCODER && s->eac3)
- ff_eac3_exponent_init();
}
*
* @param s AC-3 encoder private context
*/
-void ff_ac3_group_exponents(AC3EncodeContext *s)
+static void ac3_group_exponents(AC3EncodeContext *s)
{
int blk, ch, i, cpl;
int group_size, nb_groups;
*
* @param s AC-3 encoder private context
*/
-void ff_ac3_process_exponents(AC3EncodeContext *s)
+static void ac3_process_exponents(AC3EncodeContext *s)
{
extract_exponents(s);
*/
static void count_frame_bits_fixed(AC3EncodeContext *s)
{
- static const int frame_bits_inc[8] = { 0, 0, 2, 2, 2, 4, 2, 4 };
+ static const uint8_t frame_bits_inc[8] = { 0, 0, 2, 2, 2, 4, 2, 4 };
int blk;
int frame_bits;
{
int blk, ch;
- snr_offset = (snr_offset - 240) << 2;
+ snr_offset = (snr_offset - 240) * 4;
reset_block_bap(s);
for (blk = 0; blk < s->num_blocks; blk++) {
* frame size. Output is the SNR offset and a set of bit allocation pointers
* used to quantize the mantissas.
*/
-int ff_ac3_compute_bit_allocation(AC3EncodeContext *s)
+static int ac3_compute_bit_allocation(AC3EncodeContext *s)
{
count_frame_bits(s);
*
* @param s AC-3 encoder private context
*/
-void ff_ac3_quantize_mantissas(AC3EncodeContext *s)
+static void ac3_quantize_mantissas(AC3EncodeContext *s)
{
int blk, ch, ch0=0, got_cpl;
* @param s AC-3 encoder private context
* @param frame output data buffer
*/
-void ff_ac3_output_frame(AC3EncodeContext *s, unsigned char *frame)
+static void ac3_output_frame(AC3EncodeContext *s, unsigned char *frame)
{
int blk;
output_frame_end(s);
}
+int ff_ac3_encode_frame_common_end(AVCodecContext *avctx, AVPacket *avpkt,
+ const AVFrame *frame, int *got_packet_ptr)
+{
+ AC3EncodeContext *const s = avctx->priv_data;
+ int ret;
+
+ ac3_apply_rematrixing(s);
+
+ ac3_process_exponents(s);
+
+ ret = ac3_compute_bit_allocation(s);
+ if (ret) {
+ av_log(avctx, AV_LOG_ERROR, "Bit allocation failed. Try increasing the bitrate.\n");
+ return ret;
+ }
+
+ ac3_group_exponents(s);
+
+ ac3_quantize_mantissas(s);
+
+ if ((ret = ff_alloc_packet2(avctx, avpkt, s->frame_size, 0)) < 0)
+ return ret;
+ ac3_output_frame(s, avpkt->data);
+
+ if (frame->pts != AV_NOPTS_VALUE)
+ avpkt->pts = frame->pts - ff_samples_to_time_base(avctx, avctx->initial_padding);
+
+ *got_packet_ptr = 1;
+ return 0;
+}
static void dprint_options(AC3EncodeContext *s)
{
/* set bitstream id for alternate bitstream syntax */
if (!s->eac3 && (opt->extended_bsi_1 || opt->extended_bsi_2)) {
if (s->bitstream_id > 8 && s->bitstream_id < 11) {
- static int warn_once = 1;
- if (warn_once) {
+ if (!s->warned_alternate_bitstream) {
av_log(avctx, AV_LOG_WARNING, "alternate bitstream syntax is "
"not compatible with reduced samplerates. writing of "
"extended bitstream information will be disabled.\n");
- warn_once = 0;
+ s->warned_alternate_bitstream = 1;
}
} else {
s->bitstream_id = 6;
int blk, ch;
AC3EncodeContext *s = avctx->priv_data;
+ av_freep(&s->mdct_window);
av_freep(&s->windowed_samples);
if (s->planar_samples)
for (ch = 0; ch < s->channels; ch++)
static av_cold int allocate_buffers(AC3EncodeContext *s)
{
- AVCodecContext *avctx = s->avctx;
int blk, ch;
int channels = s->channels + 1; /* includes coupling channel */
int channel_blocks = channels * s->num_blocks;
int total_coefs = AC3_MAX_COEFS * channel_blocks;
if (s->allocate_sample_buffers(s))
- goto alloc_fail;
-
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->bap_buffer, total_coefs,
- sizeof(*s->bap_buffer), alloc_fail);
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->bap1_buffer, total_coefs,
- sizeof(*s->bap1_buffer), alloc_fail);
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->mdct_coef_buffer, total_coefs,
- sizeof(*s->mdct_coef_buffer), alloc_fail);
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->exp_buffer, total_coefs,
- sizeof(*s->exp_buffer), alloc_fail);
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->grouped_exp_buffer, channel_blocks, 128 *
- sizeof(*s->grouped_exp_buffer), alloc_fail);
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->psd_buffer, total_coefs,
- sizeof(*s->psd_buffer), alloc_fail);
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->band_psd_buffer, channel_blocks, 64 *
- sizeof(*s->band_psd_buffer), alloc_fail);
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->mask_buffer, channel_blocks, 64 *
- sizeof(*s->mask_buffer), alloc_fail);
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->qmant_buffer, total_coefs,
- sizeof(*s->qmant_buffer), alloc_fail);
+ return AVERROR(ENOMEM);
+
+ if (!FF_ALLOC_TYPED_ARRAY(s->bap_buffer, total_coefs) ||
+ !FF_ALLOC_TYPED_ARRAY(s->bap1_buffer, total_coefs) ||
+ !FF_ALLOCZ_TYPED_ARRAY(s->mdct_coef_buffer, total_coefs) ||
+ !FF_ALLOC_TYPED_ARRAY(s->exp_buffer, total_coefs) ||
+ !FF_ALLOC_TYPED_ARRAY(s->grouped_exp_buffer, channel_blocks * 128) ||
+ !FF_ALLOC_TYPED_ARRAY(s->psd_buffer, total_coefs) ||
+ !FF_ALLOC_TYPED_ARRAY(s->band_psd_buffer, channel_blocks * 64) ||
+ !FF_ALLOC_TYPED_ARRAY(s->mask_buffer, channel_blocks * 64) ||
+ !FF_ALLOC_TYPED_ARRAY(s->qmant_buffer, total_coefs))
+ return AVERROR(ENOMEM);
+
if (s->cpl_enabled) {
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->cpl_coord_exp_buffer, channel_blocks, 16 *
- sizeof(*s->cpl_coord_exp_buffer), alloc_fail);
- FF_ALLOC_ARRAY_OR_GOTO(avctx, s->cpl_coord_mant_buffer, channel_blocks, 16 *
- sizeof(*s->cpl_coord_mant_buffer), alloc_fail);
+ if (!FF_ALLOC_TYPED_ARRAY(s->cpl_coord_exp_buffer, channel_blocks * 16) ||
+ !FF_ALLOC_TYPED_ARRAY(s->cpl_coord_mant_buffer, channel_blocks * 16))
+ return AVERROR(ENOMEM);
}
for (blk = 0; blk < s->num_blocks; blk++) {
AC3Block *block = &s->blocks[blk];
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->mdct_coef, channels, sizeof(*block->mdct_coef),
- alloc_fail);
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->exp, channels, sizeof(*block->exp),
- alloc_fail);
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->grouped_exp, channels, sizeof(*block->grouped_exp),
- alloc_fail);
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->psd, channels, sizeof(*block->psd),
- alloc_fail);
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->band_psd, channels, sizeof(*block->band_psd),
- alloc_fail);
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->mask, channels, sizeof(*block->mask),
- alloc_fail);
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->qmant, channels, sizeof(*block->qmant),
- alloc_fail);
+
+ if (!FF_ALLOCZ_TYPED_ARRAY(block->mdct_coef, channels) ||
+ !FF_ALLOCZ_TYPED_ARRAY(block->exp, channels) ||
+ !FF_ALLOCZ_TYPED_ARRAY(block->grouped_exp, channels) ||
+ !FF_ALLOCZ_TYPED_ARRAY(block->psd, channels) ||
+ !FF_ALLOCZ_TYPED_ARRAY(block->band_psd, channels) ||
+ !FF_ALLOCZ_TYPED_ARRAY(block->mask, channels) ||
+ !FF_ALLOCZ_TYPED_ARRAY(block->qmant, channels))
+ return AVERROR(ENOMEM);
+
if (s->cpl_enabled) {
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->cpl_coord_exp, channels, sizeof(*block->cpl_coord_exp),
- alloc_fail);
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->cpl_coord_mant, channels, sizeof(*block->cpl_coord_mant),
- alloc_fail);
+ if (!FF_ALLOCZ_TYPED_ARRAY(block->cpl_coord_exp, channels) ||
+ !FF_ALLOCZ_TYPED_ARRAY(block->cpl_coord_mant, channels))
+ return AVERROR(ENOMEM);
}
for (ch = 0; ch < channels; ch++) {
}
if (!s->fixed_point) {
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->fixed_coef_buffer, total_coefs,
- sizeof(*s->fixed_coef_buffer), alloc_fail);
+ if (!FF_ALLOCZ_TYPED_ARRAY(s->fixed_coef_buffer, total_coefs))
+ return AVERROR(ENOMEM);
for (blk = 0; blk < s->num_blocks; blk++) {
AC3Block *block = &s->blocks[blk];
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->fixed_coef, channels,
- sizeof(*block->fixed_coef), alloc_fail);
+ if (!FF_ALLOCZ_TYPED_ARRAY(block->fixed_coef, channels))
+ return AVERROR(ENOMEM);
for (ch = 0; ch < channels; ch++)
block->fixed_coef[ch] = &s->fixed_coef_buffer[AC3_MAX_COEFS * (s->num_blocks * ch + blk)];
}
} else {
for (blk = 0; blk < s->num_blocks; blk++) {
AC3Block *block = &s->blocks[blk];
- FF_ALLOCZ_ARRAY_OR_GOTO(avctx, block->fixed_coef, channels,
- sizeof(*block->fixed_coef), alloc_fail);
+ if (!FF_ALLOCZ_TYPED_ARRAY(block->fixed_coef, channels))
+ return AVERROR(ENOMEM);
for (ch = 0; ch < channels; ch++)
block->fixed_coef[ch] = (int32_t *)block->mdct_coef[ch];
}
}
return 0;
-alloc_fail:
- return AVERROR(ENOMEM);
}
av_cold int ff_ac3_encode_init(AVCodecContext *avctx)
{
+ static AVOnce init_static_once = AV_ONCE_INIT;
AC3EncodeContext *s = avctx->priv_data;
int ret, frame_size_58;
s->crc_inv[1] = pow_poly((CRC16_POLY >> 1), (8 * frame_size_58) - 16, CRC16_POLY);
}
- /* set function pointers */
- if (CONFIG_AC3_FIXED_ENCODER && s->fixed_point) {
- s->mdct_end = ff_ac3_fixed_mdct_end;
- s->mdct_init = ff_ac3_fixed_mdct_init;
- s->allocate_sample_buffers = ff_ac3_fixed_allocate_sample_buffers;
- } else if (CONFIG_AC3_ENCODER || CONFIG_EAC3_ENCODER) {
- s->mdct_end = ff_ac3_float_mdct_end;
- s->mdct_init = ff_ac3_float_mdct_init;
- s->allocate_sample_buffers = ff_ac3_float_allocate_sample_buffers;
- }
- if (CONFIG_EAC3_ENCODER && s->eac3)
+ if (CONFIG_EAC3_ENCODER && s->eac3) {
+ static AVOnce init_static_once = AV_ONCE_INIT;
+ ff_thread_once(&init_static_once, ff_eac3_exponent_init);
s->output_frame_header = ff_eac3_output_frame_header;
- else
+ } else
s->output_frame_header = ac3_output_frame_header;
set_bandwidth(s);
- exponent_init(s);
-
bit_alloc_init(s);
ret = s->mdct_init(s);
if (ret)
- goto init_fail;
+ return ret;
ret = allocate_buffers(s);
if (ret)
- goto init_fail;
+ return ret;
ff_audiodsp_init(&s->adsp);
ff_me_cmp_init(&s->mecc, avctx);
dprint_options(s);
+ ff_thread_once(&init_static_once, exponent_init);
+
return 0;
-init_fail:
- ff_ac3_encode_close(avctx);
- return ret;
}
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