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author | Alexandra Hájková <alexandra@khirnov.net> | 2017-04-29 02:15:30 +0000 |
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committer | Diego Biurrun <diego@biurrun.de> | 2017-07-09 20:47:53 +0200 |
commit | 9c1e111406bd4cbb04d8e8611b71bebf203bec5e (patch) | |
tree | b6a2f3991bf8fcdaafd2d423d0413eb49ffbf0b5 /libavcodec | |
parent | 79f64f7ebc2b2b7030c6219914bc141cc03fd377 (diff) | |
download | ffmpeg-streaming-9c1e111406bd4cbb04d8e8611b71bebf203bec5e.zip ffmpeg-streaming-9c1e111406bd4cbb04d8e8611b71bebf203bec5e.tar.gz |
flac: Convert to the new bitstream reader
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/flac.c | 68 | ||||
-rw-r--r-- | libavcodec/flac.h | 6 | ||||
-rw-r--r-- | libavcodec/flac_parser.c | 6 | ||||
-rw-r--r-- | libavcodec/flacdec.c | 58 | ||||
-rw-r--r-- | libavcodec/flacenc.c | 2 |
5 files changed, 70 insertions, 70 deletions
diff --git a/libavcodec/flac.c b/libavcodec/flac.c index 3e51fde..5062c1e 100644 --- a/libavcodec/flac.c +++ b/libavcodec/flac.c @@ -22,8 +22,9 @@ #include "libavutil/channel_layout.h" #include "libavutil/crc.h" #include "libavutil/log.h" + +#include "bitstream.h" #include "bytestream.h" -#include "get_bits.h" #include "flac.h" #include "flacdata.h" @@ -40,33 +41,33 @@ static const uint64_t flac_channel_layouts[8] = { AV_CH_LAYOUT_7POINT1 }; -static int64_t get_utf8(GetBitContext *gb) +static int64_t get_utf8(BitstreamContext *bc) { int64_t val; - GET_UTF8(val, get_bits(gb, 8), return -1;) + GET_UTF8(val, bitstream_read(bc, 8), return -1;) return val; } -int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb, +int ff_flac_decode_frame_header(AVCodecContext *avctx, BitstreamContext *bc, FLACFrameInfo *fi, int log_level_offset) { int bs_code, sr_code, bps_code; /* frame sync code */ - if ((get_bits(gb, 15) & 0x7FFF) != 0x7FFC) { + if ((bitstream_read(bc, 15) & 0x7FFF) != 0x7FFC) { av_log(avctx, AV_LOG_ERROR + log_level_offset, "invalid sync code\n"); return AVERROR_INVALIDDATA; } /* variable block size stream code */ - fi->is_var_size = get_bits1(gb); + fi->is_var_size = bitstream_read_bit(bc); /* block size and sample rate codes */ - bs_code = get_bits(gb, 4); - sr_code = get_bits(gb, 4); + bs_code = bitstream_read(bc, 4); + sr_code = bitstream_read(bc, 4); /* channels and decorrelation */ - fi->ch_mode = get_bits(gb, 4); + fi->ch_mode = bitstream_read(bc, 4); if (fi->ch_mode < FLAC_MAX_CHANNELS) { fi->channels = fi->ch_mode + 1; fi->ch_mode = FLAC_CHMODE_INDEPENDENT; @@ -80,7 +81,7 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb, } /* bits per sample */ - bps_code = get_bits(gb, 3); + bps_code = bitstream_read(bc, 3); if (bps_code == 3 || bps_code == 7) { av_log(avctx, AV_LOG_ERROR + log_level_offset, "invalid sample size code (%d)\n", @@ -90,14 +91,14 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb, fi->bps = sample_size_table[bps_code]; /* reserved bit */ - if (get_bits1(gb)) { + if (bitstream_read_bit(bc)) { av_log(avctx, AV_LOG_ERROR + log_level_offset, "broken stream, invalid padding\n"); return AVERROR_INVALIDDATA; } /* sample or frame count */ - fi->frame_or_sample_num = get_utf8(gb); + fi->frame_or_sample_num = get_utf8(bc); if (fi->frame_or_sample_num < 0) { av_log(avctx, AV_LOG_ERROR + log_level_offset, "sample/frame number invalid; utf8 fscked\n"); @@ -110,9 +111,9 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb, "reserved blocksize code: 0\n"); return AVERROR_INVALIDDATA; } else if (bs_code == 6) { - fi->blocksize = get_bits(gb, 8) + 1; + fi->blocksize = bitstream_read(bc, 8) + 1; } else if (bs_code == 7) { - fi->blocksize = get_bits(gb, 16) + 1; + fi->blocksize = bitstream_read(bc, 16) + 1; } else { fi->blocksize = ff_flac_blocksize_table[bs_code]; } @@ -121,11 +122,11 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb, if (sr_code < 12) { fi->samplerate = ff_flac_sample_rate_table[sr_code]; } else if (sr_code == 12) { - fi->samplerate = get_bits(gb, 8) * 1000; + fi->samplerate = bitstream_read(bc, 8) * 1000; } else if (sr_code == 13) { - fi->samplerate = get_bits(gb, 16); + fi->samplerate = bitstream_read(bc, 16); } else if (sr_code == 14) { - fi->samplerate = get_bits(gb, 16) * 10; + fi->samplerate = bitstream_read(bc, 16) * 10; } else { av_log(avctx, AV_LOG_ERROR + log_level_offset, "illegal sample rate code %d\n", @@ -134,9 +135,9 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb, } /* header CRC-8 check */ - skip_bits(gb, 8); - if (av_crc(av_crc_get_table(AV_CRC_8_ATM), 0, gb->buffer, - get_bits_count(gb)/8)) { + bitstream_skip(bc, 8); + if (av_crc(av_crc_get_table(AV_CRC_8_ATM), 0, bc->buffer, + bitstream_tell(bc) / 8)) { av_log(avctx, AV_LOG_ERROR + log_level_offset, "header crc mismatch\n"); return AVERROR_INVALIDDATA; @@ -204,23 +205,22 @@ void ff_flac_set_channel_layout(AVCodecContext *avctx) void ff_flac_parse_streaminfo(AVCodecContext *avctx, struct FLACStreaminfo *s, const uint8_t *buffer) { - GetBitContext gb; - init_get_bits(&gb, buffer, FLAC_STREAMINFO_SIZE*8); + BitstreamContext bc; + bitstream_init8(&bc, buffer, FLAC_STREAMINFO_SIZE); - skip_bits(&gb, 16); /* skip min blocksize */ - s->max_blocksize = get_bits(&gb, 16); + bitstream_skip(&bc, 16); /* skip min blocksize */ + s->max_blocksize = bitstream_read(&bc, 16); if (s->max_blocksize < FLAC_MIN_BLOCKSIZE) { av_log(avctx, AV_LOG_WARNING, "invalid max blocksize: %d\n", s->max_blocksize); s->max_blocksize = 16; } - skip_bits(&gb, 24); /* skip min frame size */ - s->max_framesize = get_bits_long(&gb, 24); - - s->samplerate = get_bits_long(&gb, 20); - s->channels = get_bits(&gb, 3) + 1; - s->bps = get_bits(&gb, 5) + 1; + bitstream_skip(&bc, 24); /* skip min frame size */ + s->max_framesize = bitstream_read(&bc, 24); + s->samplerate = bitstream_read(&bc, 20); + s->channels = bitstream_read(&bc, 3) + 1; + s->bps = bitstream_read(&bc, 5) + 1; avctx->channels = s->channels; avctx->sample_rate = s->samplerate; @@ -230,11 +230,11 @@ void ff_flac_parse_streaminfo(AVCodecContext *avctx, struct FLACStreaminfo *s, av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) ff_flac_set_channel_layout(avctx); - s->samples = get_bits_long(&gb, 32) << 4; - s->samples |= get_bits(&gb, 4); + s->samples = bitstream_read(&bc, 32) << 4; + s->samples |= bitstream_read(&bc, 4); - skip_bits_long(&gb, 64); /* md5 sum */ - skip_bits_long(&gb, 64); /* md5 sum */ + bitstream_skip(&bc, 64); /* md5 sum */ + bitstream_skip(&bc, 64); /* md5 sum */ } #if LIBAVCODEC_VERSION_MAJOR < 57 diff --git a/libavcodec/flac.h b/libavcodec/flac.h index 3229682..d050717 100644 --- a/libavcodec/flac.h +++ b/libavcodec/flac.h @@ -28,8 +28,8 @@ #define AVCODEC_FLAC_H #include "avcodec.h" +#include "bitstream.h" #include "bytestream.h" -#include "get_bits.h" #define FLAC_STREAMINFO_SIZE 34 #define FLAC_MAX_CHANNELS 8 @@ -129,12 +129,12 @@ int ff_flac_get_max_frame_size(int blocksize, int ch, int bps); /** * Validate and decode a frame header. * @param avctx AVCodecContext to use as av_log() context - * @param gb GetBitContext from which to read frame header + * @param bc BitstreamContext from which to read frame header * @param[out] fi frame information * @param log_level_offset log level offset. can be used to silence error messages. * @return non-zero on error, 0 if ok */ -int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb, +int ff_flac_decode_frame_header(AVCodecContext *avctx, BitstreamContext *bc, FLACFrameInfo *fi, int log_level_offset); void ff_flac_set_channel_layout(AVCodecContext *avctx); diff --git a/libavcodec/flac_parser.c b/libavcodec/flac_parser.c index cb394f2..8150ec4 100644 --- a/libavcodec/flac_parser.c +++ b/libavcodec/flac_parser.c @@ -92,9 +92,9 @@ typedef struct FLACParseContext { static int frame_header_is_valid(AVCodecContext *avctx, const uint8_t *buf, FLACFrameInfo *fi) { - GetBitContext gb; - init_get_bits(&gb, buf, MAX_FRAME_HEADER_SIZE * 8); - return !ff_flac_decode_frame_header(avctx, &gb, fi, 127); + BitstreamContext bc; + bitstream_init8(&bc, buf, MAX_FRAME_HEADER_SIZE); + return !ff_flac_decode_frame_header(avctx, &bc, fi, 127); } /** diff --git a/libavcodec/flacdec.c b/libavcodec/flacdec.c index 78be2ad..10e1c48 100644 --- a/libavcodec/flacdec.c +++ b/libavcodec/flacdec.c @@ -34,10 +34,10 @@ #include <limits.h> #include "avcodec.h" +#include "bitstream.h" #include "internal.h" -#include "get_bits.h" #include "bytestream.h" -#include "golomb_legacy.h" +#include "golomb.h" #include "flac.h" #include "flacdata.h" #include "flacdsp.h" @@ -46,7 +46,7 @@ typedef struct FLACContext { FLACSTREAMINFO AVCodecContext *avctx; ///< parent AVCodecContext - GetBitContext gb; ///< GetBitContext initialized to start at the current frame + BitstreamContext bc; ///< BitstreamContext initialized to start at the current frame int blocksize; ///< number of samples in the current frame int sample_shift; ///< shift required to make output samples 16-bit or 32-bit @@ -203,14 +203,14 @@ static int decode_residuals(FLACContext *s, int32_t *decoded, int pred_order) int rice_bits, rice_esc; int samples; - method_type = get_bits(&s->gb, 2); + method_type = bitstream_read(&s->bc, 2); if (method_type > 1) { av_log(s->avctx, AV_LOG_ERROR, "illegal residual coding method %d\n", method_type); return AVERROR_INVALIDDATA; } - rice_order = get_bits(&s->gb, 4); + rice_order = bitstream_read(&s->bc, 4); samples= s->blocksize >> rice_order; if (pred_order > samples) { @@ -225,14 +225,14 @@ static int decode_residuals(FLACContext *s, int32_t *decoded, int pred_order) decoded += pred_order; i= pred_order; for (partition = 0; partition < (1 << rice_order); partition++) { - tmp = get_bits(&s->gb, rice_bits); + tmp = bitstream_read(&s->bc, rice_bits); if (tmp == rice_esc) { - tmp = get_bits(&s->gb, 5); + tmp = bitstream_read(&s->bc, 5); for (; i < samples; i++) - *decoded++ = get_sbits_long(&s->gb, tmp); + *decoded++ = bitstream_read_signed(&s->bc, tmp); } else { for (; i < samples; i++) { - *decoded++ = get_sr_golomb_flac(&s->gb, tmp, INT_MAX, 0); + *decoded++ = get_sr_golomb_flac(&s->bc, tmp, INT_MAX, 0); } } i= 0; @@ -249,7 +249,7 @@ static int decode_subframe_fixed(FLACContext *s, int32_t *decoded, /* warm up samples */ for (i = 0; i < pred_order; i++) { - decoded[i] = get_sbits_long(&s->gb, bps); + decoded[i] = bitstream_read_signed(&s->bc, bps); } if ((ret = decode_residuals(s, decoded, pred_order)) < 0) @@ -300,15 +300,15 @@ static int decode_subframe_lpc(FLACContext *s, int32_t *decoded, int pred_order, /* warm up samples */ for (i = 0; i < pred_order; i++) { - decoded[i] = get_sbits_long(&s->gb, bps); + decoded[i] = bitstream_read_signed(&s->bc, bps); } - coeff_prec = get_bits(&s->gb, 4) + 1; + coeff_prec = bitstream_read(&s->bc, 4) + 1; if (coeff_prec == 16) { av_log(s->avctx, AV_LOG_ERROR, "invalid coeff precision\n"); return AVERROR_INVALIDDATA; } - qlevel = get_sbits(&s->gb, 5); + qlevel = bitstream_read_signed(&s->bc, 5); if (qlevel < 0) { av_log(s->avctx, AV_LOG_ERROR, "qlevel %d not supported, maybe buggy stream\n", qlevel); @@ -316,7 +316,7 @@ static int decode_subframe_lpc(FLACContext *s, int32_t *decoded, int pred_order, } for (i = 0; i < pred_order; i++) { - coeffs[pred_order - i - 1] = get_sbits(&s->gb, coeff_prec); + coeffs[pred_order - i - 1] = bitstream_read_signed(&s->bc, coeff_prec); } if ((ret = decode_residuals(s, decoded, pred_order)) < 0) @@ -342,24 +342,24 @@ static inline int decode_subframe(FLACContext *s, int channel) bps++; } - if (get_bits1(&s->gb)) { + if (bitstream_read_bit(&s->bc)) { av_log(s->avctx, AV_LOG_ERROR, "invalid subframe padding\n"); return AVERROR_INVALIDDATA; } - type = get_bits(&s->gb, 6); + type = bitstream_read(&s->bc, 6); - if (get_bits1(&s->gb)) { - int left = get_bits_left(&s->gb); + if (bitstream_read_bit(&s->bc)) { + int left = bitstream_bits_left(&s->bc); wasted = 1; if ( left < 0 || - (left < bps && !show_bits_long(&s->gb, left)) || - !show_bits_long(&s->gb, bps)) { + (left < bps && !bitstream_peek(&s->bc, left)) || + !bitstream_peek(&s->bc, bps)) { av_log(s->avctx, AV_LOG_ERROR, "Invalid number of wasted bits > available bits (%d) - left=%d\n", bps, left); return AVERROR_INVALIDDATA; } - while (!get_bits1(&s->gb)) + while (!bitstream_read_bit(&s->bc)) wasted++; bps -= wasted; } @@ -370,12 +370,12 @@ static inline int decode_subframe(FLACContext *s, int channel) //FIXME use av_log2 for types if (type == 0) { - tmp = get_sbits_long(&s->gb, bps); + tmp = bitstream_read_signed(&s->bc, bps); for (i = 0; i < s->blocksize; i++) decoded[i] = tmp; } else if (type == 1) { for (i = 0; i < s->blocksize; i++) - decoded[i] = get_sbits_long(&s->gb, bps); + decoded[i] = bitstream_read_signed(&s->bc, bps); } else if ((type >= 8) && (type <= 12)) { if ((ret = decode_subframe_fixed(s, decoded, type & ~0x8, bps)) < 0) return ret; @@ -399,10 +399,10 @@ static inline int decode_subframe(FLACContext *s, int channel) static int decode_frame(FLACContext *s) { int i, ret; - GetBitContext *gb = &s->gb; + BitstreamContext *bc = &s->bc; FLACFrameInfo fi; - if ((ret = ff_flac_decode_frame_header(s->avctx, gb, &fi, 0)) < 0) { + if ((ret = ff_flac_decode_frame_header(s->avctx, bc, &fi, 0)) < 0) { av_log(s->avctx, AV_LOG_ERROR, "invalid frame header\n"); return ret; } @@ -471,10 +471,10 @@ static int decode_frame(FLACContext *s) return ret; } - align_get_bits(gb); + bitstream_align(bc); /* frame footer */ - skip_bits(gb, 16); /* data crc */ + bitstream_skip(bc, 16); /* data crc */ return 0; } @@ -513,12 +513,12 @@ static int flac_decode_frame(AVCodecContext *avctx, void *data, } /* decode frame */ - init_get_bits(&s->gb, buf, buf_size*8); + bitstream_init8(&s->bc, buf, buf_size); if ((ret = decode_frame(s)) < 0) { av_log(s->avctx, AV_LOG_ERROR, "decode_frame() failed\n"); return ret; } - bytes_read = (get_bits_count(&s->gb)+7)/8; + bytes_read = (bitstream_tell(&s->bc) + 7) / 8; /* get output buffer */ frame->nb_samples = s->blocksize; diff --git a/libavcodec/flacenc.c b/libavcodec/flacenc.c index 2745b17..631f02f 100644 --- a/libavcodec/flacenc.c +++ b/libavcodec/flacenc.c @@ -26,7 +26,7 @@ #include "avcodec.h" #include "bswapdsp.h" -#include "golomb_legacy.h" +#include "golomb.h" #include "internal.h" #include "lpc.h" #include "flac.h" |