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author | Michael Niedermayer <michaelni@gmx.at> | 2012-11-05 22:51:20 +0100 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2012-11-05 22:51:20 +0100 |
commit | 7d26be63c25e715f008e8923654bdf318419dd39 (patch) | |
tree | c3d598d06854085a7e9f9474dee81e543f069cdb /libavcodec/flacenc.c | |
parent | e859339e7af52210c6fe84a8e6412f0c30d1c4da (diff) | |
parent | 5ff998a233d759d0de83ea6f95c383d03d25d88e (diff) | |
download | ffmpeg-7d26be63c25e715f008e8923654bdf318419dd39.tar.gz |
Merge commit '5ff998a233d759d0de83ea6f95c383d03d25d88e'
* commit '5ff998a233d759d0de83ea6f95c383d03d25d88e':
flacenc: use uint64_t for bit counts
flacenc: remove wasted trailing 0 bits
lavu: add av_ctz() for trailing zero bit count
flacenc: use a separate buffer for byte-swapping for MD5 checksum on big-endian
fate: aac: Place LATM tests and general AAC tests in different groups
build: The A64 muxer depends on rawenc.o for ff_raw_write_packet()
Conflicts:
doc/APIchanges
libavutil/version.h
tests/fate/aac.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/flacenc.c')
-rw-r--r-- | libavcodec/flacenc.c | 134 |
1 files changed, 98 insertions, 36 deletions
diff --git a/libavcodec/flacenc.c b/libavcodec/flacenc.c index ec6f2e075b..308a027158 100644 --- a/libavcodec/flacenc.c +++ b/libavcodec/flacenc.c @@ -21,9 +21,11 @@ #include "libavutil/avassert.h" #include "libavutil/crc.h" +#include "libavutil/intmath.h" #include "libavutil/md5.h" #include "libavutil/opt.h" #include "avcodec.h" +#include "dsputil.h" #include "get_bits.h" #include "golomb.h" #include "internal.h" @@ -66,6 +68,7 @@ typedef struct FlacSubframe { int type; int type_code; int obits; + int wasted; int order; int32_t coefs[MAX_LPC_ORDER]; int shift; @@ -101,6 +104,9 @@ typedef struct FlacEncodeContext { AVCodecContext *avctx; LPCContext lpc_ctx; struct AVMD5 *md5ctx; + uint8_t *md5_buffer; + unsigned int md5_buffer_size; + DSPContext dsp; } FlacEncodeContext; @@ -401,6 +407,8 @@ static av_cold int flac_encode_init(AVCodecContext *avctx) ret = ff_lpc_init(&s->lpc_ctx, avctx->frame_size, s->options.max_prediction_order, FF_LPC_TYPE_LEVINSON); + ff_dsputil_init(&s->dsp, avctx); + dprint_compression_options(s); return ret; @@ -433,8 +441,10 @@ static void init_frame(FlacEncodeContext *s, int nb_samples) } } - for (ch = 0; ch < s->channels; ch++) + for (ch = 0; ch < s->channels; ch++) { + frame->subframes[ch].wasted = 0; frame->subframes[ch].obits = 16; + } frame->verbatim_only = 0; } @@ -455,10 +465,10 @@ static void copy_samples(FlacEncodeContext *s, const int16_t *samples) } -static int rice_count_exact(int32_t *res, int n, int k) +static uint64_t rice_count_exact(int32_t *res, int n, int k) { int i; - int count = 0; + uint64_t count = 0; for (i = 0; i < n; i++) { int32_t v = -2 * res[i] - 1; @@ -469,12 +479,12 @@ static int rice_count_exact(int32_t *res, int n, int k) } -static int subframe_count_exact(FlacEncodeContext *s, FlacSubframe *sub, - int pred_order) +static uint64_t subframe_count_exact(FlacEncodeContext *s, FlacSubframe *sub, + int pred_order) { int p, porder, psize; int i, part_end; - int count = 0; + uint64_t count = 0; /* subframe header */ count += 8; @@ -521,25 +531,25 @@ static int subframe_count_exact(FlacEncodeContext *s, FlacSubframe *sub, /** * Solve for d/dk(rice_encode_count) = n-((sum-(n>>1))>>(k+1)) = 0. */ -static int find_optimal_param(uint32_t sum, int n) +static int find_optimal_param(uint64_t sum, int n) { int k; - uint32_t sum2; + uint64_t sum2; if (sum <= n >> 1) return 0; sum2 = sum - (n >> 1); - k = av_log2(n < 256 ? FASTDIV(sum2, n) : sum2 / n); + k = av_log2(av_clipl_int32(sum2 / n)); return FFMIN(k, MAX_RICE_PARAM); } -static uint32_t calc_optimal_rice_params(RiceContext *rc, int porder, - uint32_t *sums, int n, int pred_order) +static uint64_t calc_optimal_rice_params(RiceContext *rc, int porder, + uint64_t *sums, int n, int pred_order) { int i; int k, cnt, part; - uint32_t all_bits; + uint64_t all_bits; part = (1 << porder); all_bits = 4 * part; @@ -559,7 +569,7 @@ static uint32_t calc_optimal_rice_params(RiceContext *rc, int porder, static void calc_sums(int pmin, int pmax, uint32_t *data, int n, int pred_order, - uint32_t sums[][MAX_PARTITIONS]) + uint64_t sums[][MAX_PARTITIONS]) { int i, j; int parts; @@ -570,7 +580,7 @@ static void calc_sums(int pmin, int pmax, uint32_t *data, int n, int pred_order, res = &data[pred_order]; res_end = &data[n >> pmax]; for (i = 0; i < parts; i++) { - uint32_t sum = 0; + uint64_t sum = 0; while (res < res_end) sum += *(res++); sums[pmax][i] = sum; @@ -585,15 +595,15 @@ static void calc_sums(int pmin, int pmax, uint32_t *data, int n, int pred_order, } -static uint32_t calc_rice_params(RiceContext *rc, int pmin, int pmax, +static uint64_t calc_rice_params(RiceContext *rc, int pmin, int pmax, int32_t *data, int n, int pred_order) { int i; - uint32_t bits[MAX_PARTITION_ORDER+1]; + uint64_t bits[MAX_PARTITION_ORDER+1]; int opt_porder; RiceContext tmp_rc; uint32_t *udata; - uint32_t sums[MAX_PARTITION_ORDER+1][MAX_PARTITIONS]; + uint64_t sums[MAX_PARTITION_ORDER+1][MAX_PARTITIONS]; av_assert1(pmin >= 0 && pmin <= MAX_PARTITION_ORDER); av_assert1(pmax >= 0 && pmax <= MAX_PARTITION_ORDER); @@ -629,7 +639,7 @@ static int get_max_p_order(int max_porder, int n, int order) } -static uint32_t find_subframe_rice_params(FlacEncodeContext *s, +static uint64_t find_subframe_rice_params(FlacEncodeContext *s, FlacSubframe *sub, int pred_order) { int pmin = get_max_p_order(s->options.min_partition_order, @@ -637,7 +647,7 @@ static uint32_t find_subframe_rice_params(FlacEncodeContext *s, int pmax = get_max_p_order(s->options.max_partition_order, s->frame.blocksize, pred_order); - uint32_t bits = 8 + pred_order * sub->obits + 2 + 4; + uint64_t bits = 8 + pred_order * sub->obits + 2 + 4; if (sub->type == FLAC_SUBFRAME_LPC) bits += 4 + 5 + pred_order * s->options.lpc_coeff_precision; bits += calc_rice_params(&sub->rc, pmin, pmax, sub->residual, @@ -842,7 +852,7 @@ static int encode_residual_ch(FlacEncodeContext *s, int ch) sub->type = FLAC_SUBFRAME_FIXED; if (s->options.lpc_type == FF_LPC_TYPE_NONE || s->options.lpc_type == FF_LPC_TYPE_FIXED || n <= max_order) { - uint32_t bits[MAX_FIXED_ORDER+1]; + uint64_t bits[MAX_FIXED_ORDER+1]; if (max_order > MAX_FIXED_ORDER) max_order = MAX_FIXED_ORDER; opt_order = 0; @@ -873,7 +883,7 @@ static int encode_residual_ch(FlacEncodeContext *s, int ch) omethod == ORDER_METHOD_4LEVEL || omethod == ORDER_METHOD_8LEVEL) { int levels = 1 << omethod; - uint32_t bits[1 << ORDER_METHOD_8LEVEL]; + uint64_t bits[1 << ORDER_METHOD_8LEVEL]; int order; int opt_index = levels-1; opt_order = max_order-1; @@ -892,7 +902,7 @@ static int encode_residual_ch(FlacEncodeContext *s, int ch) opt_order++; } else if (omethod == ORDER_METHOD_SEARCH) { // brute-force optimal order search - uint32_t bits[MAX_LPC_ORDER]; + uint64_t bits[MAX_LPC_ORDER]; opt_order = 0; bits[0] = UINT32_MAX; for (i = min_order-1; i < max_order; i++) { @@ -903,7 +913,7 @@ static int encode_residual_ch(FlacEncodeContext *s, int ch) } opt_order++; } else if (omethod == ORDER_METHOD_LOG) { - uint32_t bits[MAX_LPC_ORDER]; + uint64_t bits[MAX_LPC_ORDER]; int step; opt_order = min_order - 1 + (max_order-min_order)/3; @@ -975,7 +985,8 @@ static int count_frame_header(FlacEncodeContext *s) static int encode_frame(FlacEncodeContext *s) { - int ch, count; + int ch; + uint64_t count; count = count_frame_header(s); @@ -985,7 +996,37 @@ static int encode_frame(FlacEncodeContext *s) count += (8 - (count & 7)) & 7; // byte alignment count += 16; // CRC-16 - return count >> 3; + count >>= 3; + if (count > INT_MAX) + return AVERROR_BUG; + return count; +} + + +static void remove_wasted_bits(FlacEncodeContext *s) +{ + int ch, i; + + for (ch = 0; ch < s->channels; ch++) { + FlacSubframe *sub = &s->frame.subframes[ch]; + int32_t v = 0; + + for (i = 0; i < s->frame.blocksize; i++) { + v |= sub->samples[i]; + if (v & 1) + break; + } + + if (v && !(v & 1)) { + v = av_ctz(v); + + for (i = 0; i < s->frame.blocksize; i++) + sub->samples[i] >>= v; + + sub->wasted = v; + sub->obits -= v; + } + } } @@ -1134,7 +1175,9 @@ static void write_subframes(FlacEncodeContext *s) /* subframe header */ put_bits(&s->pb, 1, 0); put_bits(&s->pb, 6, sub->type_code); - put_bits(&s->pb, 1, 0); /* no wasted bits */ + put_bits(&s->pb, 1, !!sub->wasted); + if (sub->wasted) + put_bits(&s->pb, sub->wasted, 1); /* subframe */ if (sub->type == FLAC_SUBFRAME_CONSTANT) { @@ -1199,17 +1242,26 @@ static int write_frame(FlacEncodeContext *s, AVPacket *avpkt) } -static void update_md5_sum(FlacEncodeContext *s, const int16_t *samples) +static int update_md5_sum(FlacEncodeContext *s, const int16_t *samples) { -#if HAVE_BIGENDIAN - int i; - for (i = 0; i < s->frame.blocksize * s->channels; i++) { - int16_t smp = av_le2ne16(samples[i]); - av_md5_update(s->md5ctx, (uint8_t *)&smp, 2); + const uint8_t *buf; + int buf_size = s->frame.blocksize * s->channels * 2; + + if (HAVE_BIGENDIAN) { + av_fast_malloc(&s->md5_buffer, &s->md5_buffer_size, buf_size); + if (!s->md5_buffer) + return AVERROR(ENOMEM); } -#else - av_md5_update(s->md5ctx, (const uint8_t *)samples, s->frame.blocksize*s->channels*2); + + buf = (const uint8_t *)samples; +#if HAVE_BIGENDIAN + s->dsp.bswap16_buf((uint16_t *)s->md5_buffer, + (const uint16_t *)samples, buf_size / 2); + buf = s->md5_buffer; #endif + av_md5_update(s->md5ctx, buf, buf_size); + + return 0; } @@ -1243,13 +1295,19 @@ static int flac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, channel_decorrelation(s); + remove_wasted_bits(s); + frame_bytes = encode_frame(s); /* fallback to verbatim mode if the compressed frame is larger than it would be if encoded uncompressed. */ - if (frame_bytes > s->max_framesize) { + if (frame_bytes < 0 || frame_bytes > s->max_framesize) { s->frame.verbatim_only = 1; frame_bytes = encode_frame(s); + if (frame_bytes < 0) { + av_log(avctx, AV_LOG_ERROR, "Bad frame count\n"); + return frame_bytes; + } } if ((ret = ff_alloc_packet2(avctx, avpkt, frame_bytes))) @@ -1259,7 +1317,10 @@ static int flac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, s->frame_count++; s->sample_count += frame->nb_samples; - update_md5_sum(s, samples); + if ((ret = update_md5_sum(s, samples)) < 0) { + av_log(avctx, AV_LOG_ERROR, "Error updating MD5 checksum\n"); + return ret; + } if (out_bytes > s->max_encoded_framesize) s->max_encoded_framesize = out_bytes; if (out_bytes < s->min_framesize) @@ -1278,6 +1339,7 @@ static av_cold int flac_encode_close(AVCodecContext *avctx) if (avctx->priv_data) { FlacEncodeContext *s = avctx->priv_data; av_freep(&s->md5ctx); + av_freep(&s->md5_buffer); ff_lpc_end(&s->lpc_ctx); } av_freep(&avctx->extradata); |