X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=wmadec_filter.c;h=ce8d7e87501211031c8d0d056ae48e0c05665338;hp=fdf3da91c44e8b7b5acd6920cbd8175c838ec30a;hb=24758c5f;hpb=05527588bd503e4748d801b641a9e3a6556525ad diff --git a/wmadec_filter.c b/wmadec_filter.c index fdf3da91..ce8d7e87 100644 --- a/wmadec_filter.c +++ b/wmadec_filter.c @@ -17,7 +17,6 @@ #define _XOPEN_SOURCE 600 -#include #include #include #include @@ -32,6 +31,7 @@ #include "ggo.h" #include "string.h" #include "sched.h" +#include "buffer_tree.h" #include "filter.h" #include "bitstream.h" #include "imdct.h" @@ -59,6 +59,7 @@ #define LSP_POW_BITS 7 struct private_wmadec_data { + /** Information contained in the audio file header. */ struct asf_header_info ahi; struct getbit_context gb; /** Whether to use the bit reservoir. */ @@ -69,13 +70,15 @@ struct private_wmadec_data { int use_exp_vlc; /** Whether perceptual noise is added. */ int use_noise_coding; + /** Depends on number of the bits per second and the frame length. */ int byte_offset_bits; + /** Only used if use_exp_vlc is true. */ struct vlc exp_vlc; - int exponent_sizes[BLOCK_NB_SIZES]; uint16_t exponent_bands[BLOCK_NB_SIZES][25]; /** The index of the first coef in high band. */ int high_band_start[BLOCK_NB_SIZES]; - int coefs_end[BLOCK_NB_SIZES]; ///< max number of coded coefficients + /** Maximal number of coded coefficients. */ + int coefs_end[BLOCK_NB_SIZES]; int exponent_high_sizes[BLOCK_NB_SIZES]; int exponent_high_bands[BLOCK_NB_SIZES][HIGH_BAND_MAX_SIZE]; struct vlc hgain_vlc; @@ -89,21 +92,31 @@ struct private_wmadec_data { uint16_t *run_table[2]; uint16_t *level_table[2]; const struct coef_vlc_table *coef_vlcs[2]; - /* frame info */ - int frame_len; ///< frame length in samples - int frame_len_bits; ///< frame_len = 1 << frame_len_bits + /** Frame length in samples. */ + int frame_len; + /** log2 of frame_len. */ + int frame_len_bits; /** Number of block sizes. */ int nb_block_sizes; /* block info */ int reset_block_lengths; - int block_len_bits; ///< log2 of current block length - int next_block_len_bits; ///< log2 of next block length - int prev_block_len_bits; ///< log2 of prev block length - int block_len; ///< block length in samples - int block_pos; ///< current position in frame - uint8_t ms_stereo; ///< true if mid/side stereo mode - uint8_t channel_coded[MAX_CHANNELS]; ///< true if channel is coded - int exponents_bsize[MAX_CHANNELS]; ///< log2 ratio frame/exp. length + /** log2 of current block length. */ + int block_len_bits; + /** log2 of next block length. */ + int next_block_len_bits; + /** log2 of previous block length. */ + int prev_block_len_bits; + /** Block length in samples. */ + int block_len; + /** Current position in frame. */ + int block_pos; + /** True if mid/side stereo mode. */ + uint8_t ms_stereo; + /** True if channel is coded. */ + uint8_t channel_coded[MAX_CHANNELS]; + /** log2 ratio frame/exp. length. */ + int exponents_bsize[MAX_CHANNELS]; + float exponents[MAX_CHANNELS][BLOCK_MAX_SIZE]; float max_exponent[MAX_CHANNELS]; int16_t coefs1[MAX_CHANNELS][BLOCK_MAX_SIZE]; @@ -111,9 +124,9 @@ struct private_wmadec_data { float output[BLOCK_MAX_SIZE * 2]; struct mdct_context *mdct_ctx[BLOCK_NB_SIZES]; float *windows[BLOCK_NB_SIZES]; - /* output buffer for one frame and the last for IMDCT windowing */ + /** Output buffer for one frame and the last for IMDCT windowing. */ float frame_out[MAX_CHANNELS][BLOCK_MAX_SIZE * 2]; - /* last frame info */ + /** Last frame info. */ uint8_t last_superframe[MAX_CODED_SUPERFRAME_SIZE + 4]; /* padding added */ int last_bitoffset; int last_superframe_len; @@ -128,15 +141,15 @@ struct private_wmadec_data { }; #define EXPVLCBITS 8 -#define EXPMAX ((19 + EXPVLCBITS - 1) / EXPVLCBITS) +#define EXPMAX DIV_ROUND_UP(19, EXPVLCBITS) #define HGAINVLCBITS 9 -#define HGAINMAX ((13 + HGAINVLCBITS - 1) / HGAINVLCBITS) +#define HGAINMAX DIV_ROUND_UP(13, HGAINVLCBITS) #define VLCBITS 9 -#define VLCMAX ((22 + VLCBITS - 1) / VLCBITS) +#define VLCMAX DIV_ROUND_UP(22, VLCBITS) -#define SINE_WINDOW(x) float sine_ ## x[x] __aligned(16) +#define SINE_WINDOW(x) static float sine_ ## x[x] __a_aligned(16) SINE_WINDOW(128); SINE_WINDOW(256); @@ -214,8 +227,9 @@ static void compute_scale_factor_band_sizes(struct private_wmadec_data *pwd, const uint8_t *table; for (k = 0; k < pwd->nb_block_sizes; k++) { - block_len = pwd->frame_len >> k; + int exponent_size; + block_len = pwd->frame_len >> k; table = NULL; a = pwd->frame_len_bits - BLOCK_MIN_BITS - k; if (a < 3) { @@ -230,7 +244,7 @@ static void compute_scale_factor_band_sizes(struct private_wmadec_data *pwd, n = *table++; for (i = 0; i < n; i++) pwd->exponent_bands[k][i] = table[i]; - pwd->exponent_sizes[k] = n; + exponent_size = n; } else { j = 0; lpos = 0; @@ -247,7 +261,7 @@ static void compute_scale_factor_band_sizes(struct private_wmadec_data *pwd, break; lpos = pos; } - pwd->exponent_sizes[k] = j; + exponent_size = j; } /* max number of coefs */ @@ -255,7 +269,7 @@ static void compute_scale_factor_band_sizes(struct private_wmadec_data *pwd, /* high freq computation */ pwd->high_band_start[k] = (int) ((block_len * 2 * high_freq) / ahi->sample_rate + 0.5); - n = pwd->exponent_sizes[k]; + n = exponent_size; j = 0; pos = 0; for (i = 0; i < n; i++) { @@ -489,9 +503,8 @@ static int wma_decode_init(char *initial_buf, int len, struct private_wmadec_dat if (pwd->use_exp_vlc) { PARA_INFO_LOG("using exp_vlc\n"); - init_vlc(&pwd->exp_vlc, EXPVLCBITS, - sizeof(wma_scale_huffbits), wma_scale_huffbits, - wma_scale_huffcodes, 4); + init_vlc(&pwd->exp_vlc, EXPVLCBITS, sizeof(wma_scale_huffbits), + wma_scale_huffbits, wma_scale_huffcodes, 4); } else { PARA_INFO_LOG("using curve\n"); wma_lsp_to_curve_init(pwd, pwd->frame_len); @@ -755,7 +768,6 @@ static void compute_mdct_coefficients(struct private_wmadec_data *pwd, *coefs++ = 0.0; continue; } - mult1 = mult; n1 = pwd->exponent_high_sizes[bsize]; /* compute power of high bands */ exponents = pwd->exponents[ch] + @@ -789,8 +801,7 @@ static void compute_mdct_coefficients(struct private_wmadec_data *pwd, mult1 = sqrt(exp_power[j] / exp_power[last_high_band]); /* XXX: use a table */ - mult1 = mult1 * pow(10, - pwd->high_band_values[ch][j] * 0.05); + mult1 *= pow(10, pwd->high_band_values[ch][j] * 0.05); mult1 /= (pwd->max_exponent[ch] * pwd->noise_mult); mult1 *= mdct_norm; for (i = 0; i < n; i++) { @@ -996,9 +1007,8 @@ static int wma_decode_block(struct private_wmadec_data *pwd) } next: for (ch = 0; ch < pwd->ahi.channels; ch++) { - int n4, index; + int n4, idx; - n = pwd->block_len; n4 = pwd->block_len / 2; if (pwd->channel_coded[ch]) imdct(pwd->mdct_ctx[bsize], pwd->output, pwd->coefs[ch]); @@ -1006,8 +1016,8 @@ next: memset(pwd->output, 0, sizeof(pwd->output)); /* multiply by the window and add in the frame */ - index = (pwd->frame_len / 2) + pwd->block_pos - n4; - wma_window(pwd, &pwd->frame_out[ch][index]); + idx = (pwd->frame_len / 2) + pwd->block_pos - n4; + wma_window(pwd, &pwd->frame_out[ch][idx]); } /* update block number */ @@ -1167,9 +1177,9 @@ static int wma_decode_superframe(struct private_wmadec_data *pwd, void *data, goto fail; samples += pwd->ahi.channels * pwd->frame_len; } - PARA_DEBUG_LOG("frame_len: %d, block_len: %d, outbytes: %zd, eaten: %d\n", + PARA_DEBUG_LOG("frame_len: %d, block_len: %d, outbytes: %d, eaten: %d\n", pwd->frame_len, pwd->block_len, - (int8_t *) samples - (int8_t *) data, pwd->ahi.block_align); + (int)((int8_t *)samples - (int8_t *)data), pwd->ahi.block_align); *data_size = (int8_t *)samples - (int8_t *)data; return pwd->ahi.block_align; fail: @@ -1178,41 +1188,6 @@ fail: return ret; } -static ssize_t wmadec_convert(char *inbuffer, size_t len, - struct filter_node *fn) -{ - int ret, converted = 0; - struct private_wmadec_data *pwd = fn->private_data; - - if (len <= WMA_FRAME_SKIP) - return 0; - if (!pwd) { - ret = wma_decode_init(inbuffer, len, &pwd); - if (ret <= 0) - return ret; - fn->private_data = pwd; - fn->fc->channels = pwd->ahi.channels; - fn->fc->samplerate = pwd->ahi.sample_rate; - return pwd->ahi.header_len; - } - for (;;) { - int out_size; - if (converted + WMA_FRAME_SKIP + pwd->ahi.block_align > len) - break; - out_size = fn->bufsize - fn->loaded; - if (out_size < 128 * 1024) - break; - ret = wma_decode_superframe(pwd, fn->buf + fn->loaded, - &out_size, (uint8_t *)inbuffer + converted + WMA_FRAME_SKIP, - len - WMA_FRAME_SKIP); - if (ret < 0) - return ret; - fn->loaded += out_size; - converted += ret + WMA_FRAME_SKIP; - } - return converted; -} - static void wmadec_close(struct filter_node *fn) { struct private_wmadec_data *pwd = fn->private_data; @@ -1220,18 +1195,84 @@ static void wmadec_close(struct filter_node *fn) if (!pwd) return; wmadec_cleanup(pwd); - free(fn->buf); - fn->buf = NULL; free(fn->private_data); fn->private_data = NULL; } +static int wmadec_execute(struct btr_node *btrn, const char *cmd, char **result) +{ + struct filter_node *fn = btr_context(btrn); + struct private_wmadec_data *pwd = fn->private_data; + + return decoder_execute(cmd, pwd->ahi.sample_rate, pwd->ahi.channels, + result); +} + +#define WMA_OUTPUT_BUFFER_SIZE (128 * 1024) + +static void wmadec_post_select(__a_unused struct sched *s, struct task *t) +{ + struct filter_node *fn = container_of(t, struct filter_node, task); + int ret, converted, out_size; + struct private_wmadec_data *pwd = fn->private_data; + struct btr_node *btrn = fn->btrn; + size_t len; + char *in, *out; + +next_buffer: + converted = 0; + t->error = 0; + ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL); + if (ret < 0) + goto err; + if (ret == 0) + return; + btr_merge(btrn, fn->min_iqs); + len = btr_next_buffer(btrn, (char **)&in); + ret = -E_WMADEC_EOF; + if (len < fn->min_iqs) + goto err; + if (!pwd) { + ret = wma_decode_init(in, len, &pwd); + if (ret < 0) + goto err; + if (ret == 0) { + fn->min_iqs += 4096; + goto next_buffer; + } + fn->min_iqs = 2 * (WMA_FRAME_SKIP + pwd->ahi.block_align); + fn->private_data = pwd; + converted = pwd->ahi.header_len; + goto success; + } + fn->min_iqs = WMA_FRAME_SKIP + pwd->ahi.block_align; + if (fn->min_iqs > len) + goto success; + out_size = WMA_OUTPUT_BUFFER_SIZE; + out = para_malloc(out_size); + ret = wma_decode_superframe(pwd, out, &out_size, + (uint8_t *)in + WMA_FRAME_SKIP, len - WMA_FRAME_SKIP); + if (ret < 0) { + free(out); + goto err; + } + out = para_realloc(out, out_size); + if (out_size > 0) + btr_add_output(out, out_size, btrn); + converted += ret + WMA_FRAME_SKIP; +success: + btr_consume(btrn, converted); + return; +err: + assert(ret < 0); + t->error = ret; + btr_remove_node(&fn->btrn); +} + static void wmadec_open(struct filter_node *fn) { - fn->bufsize = 1024 * 1024; - fn->buf = para_malloc(fn->bufsize); fn->private_data = NULL; - fn->loaded = 0; + fn->min_iqs = 4096; } /** @@ -1243,5 +1284,7 @@ void wmadec_filter_init(struct filter *f) { f->open = wmadec_open; f->close = wmadec_close; - f->convert = wmadec_convert; + f->execute = wmadec_execute; + f->pre_select = generic_filter_pre_select; + f->post_select = wmadec_post_select; }