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ac3enc: move ff_ac3_encode_frame() to ac3enc_template.c
This avoids using function pointers for quite a few small functions, most of which just call DSP functions.
This commit is contained in:
Justin Ruggles
parent
668afae438
commit
8683c6a638
@ -177,7 +177,7 @@ static const int8_t ac3_coupling_start_tab[6][3][19] = {
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* Adjust the frame size to make the average bit rate match the target bit rate.
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* This is only needed for 11025, 22050, and 44100 sample rates or any E-AC-3.
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*/
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static void adjust_frame_size(AC3EncodeContext *s)
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void ff_ac3_adjust_frame_size(AC3EncodeContext *s)
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{
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while (s->bits_written >= s->bit_rate && s->samples_written >= s->sample_rate) {
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s->bits_written -= s->bit_rate;
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@ -190,7 +190,7 @@ static void adjust_frame_size(AC3EncodeContext *s)
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}
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static void compute_coupling_strategy(AC3EncodeContext *s)
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void ff_ac3_compute_coupling_strategy(AC3EncodeContext *s)
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{
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int blk, ch;
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int got_cpl_snr;
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@ -254,7 +254,7 @@ static void compute_coupling_strategy(AC3EncodeContext *s)
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/**
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* Apply stereo rematrixing to coefficients based on rematrixing flags.
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*/
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static void apply_rematrixing(AC3EncodeContext *s)
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void ff_ac3_apply_rematrixing(AC3EncodeContext *s)
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{
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int nb_coefs;
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int blk, bnd, i;
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@ -570,7 +570,7 @@ static void group_exponents(AC3EncodeContext *s)
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* Extract exponents from MDCT coefficients, calculate exponent strategies,
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* and encode final exponents.
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*/
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static void process_exponents(AC3EncodeContext *s)
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void ff_ac3_process_exponents(AC3EncodeContext *s)
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{
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extract_exponents(s);
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@ -1028,7 +1028,7 @@ static int cbr_bit_allocation(AC3EncodeContext *s)
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* frame size. Output is the SNR offset and a set of bit allocation pointers
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* used to quantize the mantissas.
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*/
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static int compute_bit_allocation(AC3EncodeContext *s)
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int ff_ac3_compute_bit_allocation(AC3EncodeContext *s)
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{
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count_frame_bits(s);
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@ -1163,7 +1163,7 @@ static void quantize_mantissas_blk_ch(AC3Mant *s, int32_t *fixed_coef,
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/**
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* Quantize mantissas using coefficients, exponents, and bit allocation pointers.
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*/
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static void quantize_mantissas(AC3EncodeContext *s)
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void ff_ac3_quantize_mantissas(AC3EncodeContext *s)
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{
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int blk, ch, ch0=0, got_cpl;
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@ -1522,7 +1522,7 @@ static void output_frame_end(AC3EncodeContext *s)
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/**
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* Write the frame to the output bitstream.
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*/
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static void output_frame(AC3EncodeContext *s, unsigned char *frame)
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void ff_ac3_output_frame(AC3EncodeContext *s, unsigned char *frame)
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{
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int blk;
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@ -1691,7 +1691,7 @@ static void validate_mix_level(void *log_ctx, const char *opt_name,
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* Validate metadata options as set by AVOption system.
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* These values can optionally be changed per-frame.
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*/
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static int validate_metadata(AVCodecContext *avctx)
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int ff_ac3_validate_metadata(AVCodecContext *avctx)
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{
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AC3EncodeContext *s = avctx->priv_data;
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AC3EncOptions *opt = &s->options;
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@ -1800,57 +1800,6 @@ static int validate_metadata(AVCodecContext *avctx)
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}
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/**
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* Encode a single AC-3 frame.
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*/
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int ff_ac3_encode_frame(AVCodecContext *avctx, unsigned char *frame,
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int buf_size, void *data)
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{
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AC3EncodeContext *s = avctx->priv_data;
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const SampleType *samples = data;
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int ret;
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if (!s->eac3 && s->options.allow_per_frame_metadata) {
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ret = validate_metadata(avctx);
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if (ret)
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return ret;
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}
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if (s->bit_alloc.sr_code == 1 || s->eac3)
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adjust_frame_size(s);
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s->deinterleave_input_samples(s, samples);
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s->apply_mdct(s);
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s->scale_coefficients(s);
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s->cpl_on = s->cpl_enabled;
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compute_coupling_strategy(s);
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if (s->cpl_on)
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s->apply_channel_coupling(s);
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s->compute_rematrixing_strategy(s);
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apply_rematrixing(s);
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process_exponents(s);
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ret = compute_bit_allocation(s);
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if (ret) {
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av_log(avctx, AV_LOG_ERROR, "Bit allocation failed. Try increasing the bitrate.\n");
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return ret;
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}
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quantize_mantissas(s);
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output_frame(s, frame);
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return s->frame_size;
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}
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/**
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* Finalize encoding and free any memory allocated by the encoder.
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*/
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@ -2047,7 +1996,7 @@ static av_cold int validate_options(AVCodecContext *avctx, AC3EncodeContext *s)
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}
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if (!s->eac3) {
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ret = validate_metadata(avctx);
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ret = ff_ac3_validate_metadata(avctx);
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if (ret)
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return ret;
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}
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@ -2273,24 +2222,11 @@ av_cold int ff_ac3_encode_init(AVCodecContext *avctx)
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if (CONFIG_AC3_FIXED_ENCODER && s->fixed_point) {
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s->mdct_end = ff_ac3_fixed_mdct_end;
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s->mdct_init = ff_ac3_fixed_mdct_init;
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s->apply_window = ff_ac3_fixed_apply_window;
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s->normalize_samples = ff_ac3_fixed_normalize_samples;
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s->scale_coefficients = ff_ac3_fixed_scale_coefficients;
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s->allocate_sample_buffers = ff_ac3_fixed_allocate_sample_buffers;
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s->deinterleave_input_samples = ff_ac3_fixed_deinterleave_input_samples;
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s->apply_mdct = ff_ac3_fixed_apply_mdct;
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s->apply_channel_coupling = ff_ac3_fixed_apply_channel_coupling;
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s->compute_rematrixing_strategy = ff_ac3_fixed_compute_rematrixing_strategy;
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} else if (CONFIG_AC3_ENCODER || CONFIG_EAC3_ENCODER) {
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s->mdct_end = ff_ac3_float_mdct_end;
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s->mdct_init = ff_ac3_float_mdct_init;
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s->apply_window = ff_ac3_float_apply_window;
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s->scale_coefficients = ff_ac3_float_scale_coefficients;
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s->allocate_sample_buffers = ff_ac3_float_allocate_sample_buffers;
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s->deinterleave_input_samples = ff_ac3_float_deinterleave_input_samples;
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s->apply_mdct = ff_ac3_float_apply_mdct;
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s->apply_channel_coupling = ff_ac3_float_apply_channel_coupling;
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s->compute_rematrixing_strategy = ff_ac3_float_compute_rematrixing_strategy;
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}
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if (CONFIG_EAC3_ENCODER && s->eac3)
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s->output_frame_header = ff_eac3_output_frame_header;
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@ -224,19 +224,9 @@ typedef struct AC3EncodeContext {
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/* fixed vs. float function pointers */
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void (*mdct_end)(AC3MDCTContext *mdct);
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int (*mdct_init)(AVCodecContext *avctx, AC3MDCTContext *mdct, int nbits);
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void (*apply_window)(DSPContext *dsp, SampleType *output,
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const SampleType *input, const SampleType *window,
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unsigned int len);
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int (*normalize_samples)(struct AC3EncodeContext *s);
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void (*scale_coefficients)(struct AC3EncodeContext *s);
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/* fixed vs. float templated function pointers */
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int (*allocate_sample_buffers)(struct AC3EncodeContext *s);
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void (*deinterleave_input_samples)(struct AC3EncodeContext *s,
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const SampleType *samples);
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void (*apply_mdct)(struct AC3EncodeContext *s);
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void (*apply_channel_coupling)(struct AC3EncodeContext *s);
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void (*compute_rematrixing_strategy)(struct AC3EncodeContext *s);
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/* AC-3 vs. E-AC-3 function pointers */
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void (*output_frame_header)(struct AC3EncodeContext *s);
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@ -247,11 +237,24 @@ extern const int64_t ff_ac3_channel_layouts[19];
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int ff_ac3_encode_init(AVCodecContext *avctx);
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int ff_ac3_encode_frame(AVCodecContext *avctx, unsigned char *frame,
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int buf_size, void *data);
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int ff_ac3_encode_close(AVCodecContext *avctx);
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int ff_ac3_validate_metadata(AVCodecContext *avctx);
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void ff_ac3_adjust_frame_size(AC3EncodeContext *s);
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void ff_ac3_compute_coupling_strategy(AC3EncodeContext *s);
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void ff_ac3_apply_rematrixing(AC3EncodeContext *s);
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void ff_ac3_process_exponents(AC3EncodeContext *s);
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int ff_ac3_compute_bit_allocation(AC3EncodeContext *s);
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void ff_ac3_quantize_mantissas(AC3EncodeContext *s);
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void ff_ac3_output_frame(AC3EncodeContext *s, unsigned char *frame);
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/* prototypes for functions in ac3enc_fixed.c and ac3enc_float.c */
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@ -263,36 +266,15 @@ int ff_ac3_fixed_mdct_init(AVCodecContext *avctx, AC3MDCTContext *mdct,
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int ff_ac3_float_mdct_init(AVCodecContext *avctx, AC3MDCTContext *mdct,
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int nbits);
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void ff_ac3_fixed_apply_window(DSPContext *dsp, SampleType *output,
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const SampleType *input,
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const SampleType *window, unsigned int len);
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void ff_ac3_float_apply_window(DSPContext *dsp, SampleType *output,
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const SampleType *input,
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const SampleType *window, unsigned int len);
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int ff_ac3_fixed_normalize_samples(AC3EncodeContext *s);
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void ff_ac3_fixed_scale_coefficients(AC3EncodeContext *s);
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void ff_ac3_float_scale_coefficients(AC3EncodeContext *s);
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/* prototypes for functions in ac3enc_template.c */
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int ff_ac3_fixed_allocate_sample_buffers(AC3EncodeContext *s);
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int ff_ac3_float_allocate_sample_buffers(AC3EncodeContext *s);
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void ff_ac3_fixed_deinterleave_input_samples(AC3EncodeContext *s,
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const SampleType *samples);
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void ff_ac3_float_deinterleave_input_samples(AC3EncodeContext *s,
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const SampleType *samples);
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void ff_ac3_fixed_apply_mdct(AC3EncodeContext *s);
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void ff_ac3_float_apply_mdct(AC3EncodeContext *s);
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void ff_ac3_fixed_apply_channel_coupling(AC3EncodeContext *s);
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void ff_ac3_float_apply_channel_coupling(AC3EncodeContext *s);
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void ff_ac3_fixed_compute_rematrixing_strategy(AC3EncodeContext *s);
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void ff_ac3_float_compute_rematrixing_strategy(AC3EncodeContext *s);
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int ff_ac3_fixed_encode_frame(AVCodecContext *avctx, unsigned char *frame,
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int buf_size, void *data);
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int ff_ac3_float_encode_frame(AVCodecContext *avctx, unsigned char *frame,
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int buf_size, void *data);
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#endif /* AVCODEC_AC3ENC_H */
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@ -63,9 +63,8 @@ av_cold int AC3_NAME(mdct_init)(AVCodecContext *avctx, AC3MDCTContext *mdct,
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/**
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* Apply KBD window to input samples prior to MDCT.
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*/
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void AC3_NAME(apply_window)(DSPContext *dsp, int16_t *output,
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const int16_t *input, const int16_t *window,
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unsigned int len)
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static void apply_window(DSPContext *dsp, int16_t *output, const int16_t *input,
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const int16_t *window, unsigned int len)
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{
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dsp->apply_window_int16(output, input, window, len);
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}
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@ -77,7 +76,7 @@ void AC3_NAME(apply_window)(DSPContext *dsp, int16_t *output,
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*
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* @return exponent shift
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*/
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int AC3_NAME(normalize_samples)(AC3EncodeContext *s)
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static int normalize_samples(AC3EncodeContext *s)
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{
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int v = s->ac3dsp.ac3_max_msb_abs_int16(s->windowed_samples, AC3_WINDOW_SIZE);
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v = 14 - av_log2(v);
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@ -91,7 +90,7 @@ int AC3_NAME(normalize_samples)(AC3EncodeContext *s)
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/**
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* Scale MDCT coefficients to 25-bit signed fixed-point.
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*/
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void AC3_NAME(scale_coefficients)(AC3EncodeContext *s)
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static void scale_coefficients(AC3EncodeContext *s)
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{
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int blk, ch;
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@ -119,7 +118,7 @@ AVCodec ff_ac3_fixed_encoder = {
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CODEC_ID_AC3,
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sizeof(AC3EncodeContext),
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ac3_fixed_encode_init,
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ff_ac3_encode_frame,
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ff_ac3_fixed_encode_frame,
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ff_ac3_encode_close,
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NULL,
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.sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_NONE},
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@ -82,18 +82,27 @@ av_cold int ff_ac3_float_mdct_init(AVCodecContext *avctx, AC3MDCTContext *mdct,
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/**
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* Apply KBD window to input samples prior to MDCT.
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*/
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void ff_ac3_float_apply_window(DSPContext *dsp, float *output,
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const float *input, const float *window,
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unsigned int len)
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static void apply_window(DSPContext *dsp, float *output, const float *input,
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const float *window, unsigned int len)
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{
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dsp->vector_fmul(output, input, window, len);
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}
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/**
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* Normalize the input samples.
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* Not needed for the floating-point encoder.
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*/
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static int normalize_samples(AC3EncodeContext *s)
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{
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return 0;
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}
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/**
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* Scale MDCT coefficients from float to 24-bit fixed-point.
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*/
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void ff_ac3_float_scale_coefficients(AC3EncodeContext *s)
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static void scale_coefficients(AC3EncodeContext *s)
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{
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int chan_size = AC3_MAX_COEFS * AC3_MAX_BLOCKS;
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s->ac3dsp.float_to_fixed24(s->fixed_coef_buffer + chan_size,
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@ -109,7 +118,7 @@ AVCodec ff_ac3_encoder = {
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CODEC_ID_AC3,
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sizeof(AC3EncodeContext),
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ff_ac3_encode_init,
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ff_ac3_encode_frame,
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ff_ac3_float_encode_frame,
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ff_ac3_encode_close,
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NULL,
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.sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_NONE},
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@ -31,6 +31,17 @@
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#include "ac3enc.h"
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/* prototypes for static functions in ac3enc_fixed.c and ac3enc_float.c */
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static void scale_coefficients(AC3EncodeContext *s);
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static void apply_window(DSPContext *dsp, SampleType *output,
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const SampleType *input, const SampleType *window,
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unsigned int len);
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static int normalize_samples(AC3EncodeContext *s);
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int AC3_NAME(allocate_sample_buffers)(AC3EncodeContext *s)
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{
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int ch;
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@ -55,7 +66,7 @@ alloc_fail:
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* Deinterleave input samples.
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* Channels are reordered from Libav's default order to AC-3 order.
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*/
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void AC3_NAME(deinterleave_input_samples)(AC3EncodeContext *s,
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static void deinterleave_input_samples(AC3EncodeContext *s,
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const SampleType *samples)
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{
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int ch, i;
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@ -85,7 +96,7 @@ void AC3_NAME(deinterleave_input_samples)(AC3EncodeContext *s,
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* This applies the KBD window and normalizes the input to reduce precision
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* loss due to fixed-point calculations.
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*/
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void AC3_NAME(apply_mdct)(AC3EncodeContext *s)
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static void apply_mdct(AC3EncodeContext *s)
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{
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int blk, ch;
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@ -94,11 +105,11 @@ void AC3_NAME(apply_mdct)(AC3EncodeContext *s)
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AC3Block *block = &s->blocks[blk];
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const SampleType *input_samples = &s->planar_samples[ch][blk * AC3_BLOCK_SIZE];
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s->apply_window(&s->dsp, s->windowed_samples, input_samples,
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apply_window(&s->dsp, s->windowed_samples, input_samples,
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s->mdct->window, AC3_WINDOW_SIZE);
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if (s->fixed_point)
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block->coeff_shift[ch+1] = s->normalize_samples(s);
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block->coeff_shift[ch+1] = normalize_samples(s);
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s->mdct->fft.mdct_calcw(&s->mdct->fft, block->mdct_coef[ch+1],
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s->windowed_samples);
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@ -127,7 +138,7 @@ static inline float calc_cpl_coord(float energy_ch, float energy_cpl)
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* adaptive coupling strategy were to be implemented it might be useful
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* at that time to use coupling for the fixed-point encoder as well.
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*/
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void AC3_NAME(apply_channel_coupling)(AC3EncodeContext *s)
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static void apply_channel_coupling(AC3EncodeContext *s)
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{
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#if CONFIG_AC3ENC_FLOAT
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LOCAL_ALIGNED_16(float, cpl_coords, [AC3_MAX_BLOCKS], [AC3_MAX_CHANNELS][16]);
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@ -339,7 +350,7 @@ void AC3_NAME(apply_channel_coupling)(AC3EncodeContext *s)
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/**
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* Determine rematrixing flags for each block and band.
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*/
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void AC3_NAME(compute_rematrixing_strategy)(AC3EncodeContext *s)
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static void compute_rematrixing_strategy(AC3EncodeContext *s)
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{
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int nb_coefs;
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int blk, bnd, i;
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@ -397,3 +408,54 @@ void AC3_NAME(compute_rematrixing_strategy)(AC3EncodeContext *s)
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block0 = block;
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}
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}
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||||
/**
|
||||
* Encode a single AC-3 frame.
|
||||
*/
|
||||
int AC3_NAME(encode_frame)(AVCodecContext *avctx, unsigned char *frame,
|
||||
int buf_size, void *data)
|
||||
{
|
||||
AC3EncodeContext *s = avctx->priv_data;
|
||||
const SampleType *samples = data;
|
||||
int ret;
|
||||
|
||||
if (!s->eac3 && s->options.allow_per_frame_metadata) {
|
||||
ret = ff_ac3_validate_metadata(avctx);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (s->bit_alloc.sr_code == 1 || s->eac3)
|
||||
ff_ac3_adjust_frame_size(s);
|
||||
|
||||
deinterleave_input_samples(s, samples);
|
||||
|
||||
apply_mdct(s);
|
||||
|
||||
scale_coefficients(s);
|
||||
|
||||
s->cpl_on = s->cpl_enabled;
|
||||
ff_ac3_compute_coupling_strategy(s);
|
||||
|
||||
if (s->cpl_on)
|
||||
apply_channel_coupling(s);
|
||||
|
||||
compute_rematrixing_strategy(s);
|
||||
|
||||
ff_ac3_apply_rematrixing(s);
|
||||
|
||||
ff_ac3_process_exponents(s);
|
||||
|
||||
ret = ff_ac3_compute_bit_allocation(s);
|
||||
if (ret) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Bit allocation failed. Try increasing the bitrate.\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ff_ac3_quantize_mantissas(s);
|
||||
|
||||
ff_ac3_output_frame(s, frame);
|
||||
|
||||
return s->frame_size;
|
||||
}
|
||||
|
||||
@ -145,7 +145,7 @@ AVCodec ff_eac3_encoder = {
|
||||
.id = CODEC_ID_EAC3,
|
||||
.priv_data_size = sizeof(AC3EncodeContext),
|
||||
.init = ff_ac3_encode_init,
|
||||
.encode = ff_ac3_encode_frame,
|
||||
.encode = ff_ac3_float_encode_frame,
|
||||
.close = ff_ac3_encode_close,
|
||||
.sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_NONE},
|
||||
.long_name = NULL_IF_CONFIG_SMALL("ATSC A/52 E-AC-3"),
|
||||
|
||||
Loading…
Reference in New Issue
Block a user