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author | Alexandra Hájková <alexandra@khirnov.net> | 2016-04-10 21:41:02 +0200 |
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committer | Diego Biurrun <diego@biurrun.de> | 2017-01-09 15:18:16 +0100 |
commit | d7fe11634c1ad3433d5ea5a08604692d583fea2b (patch) | |
tree | d7801284227594f9c8466d50eb701b80c83485f0 /libavcodec/motionpixels.c | |
parent | 00b6a765430e5c5cacf0bd1be8b318d631cd4e14 (diff) | |
download | ffmpeg-streaming-d7fe11634c1ad3433d5ea5a08604692d583fea2b.zip ffmpeg-streaming-d7fe11634c1ad3433d5ea5a08604692d583fea2b.tar.gz |
motionpixels: Convert to the new bitstream reader
Diffstat (limited to 'libavcodec/motionpixels.c')
-rw-r--r-- | libavcodec/motionpixels.c | 77 |
1 files changed, 40 insertions, 37 deletions
diff --git a/libavcodec/motionpixels.c b/libavcodec/motionpixels.c index a18541b..333f18f 100644 --- a/libavcodec/motionpixels.c +++ b/libavcodec/motionpixels.c @@ -20,7 +20,7 @@ */ #include "avcodec.h" -#include "get_bits.h" +#include "bitstream.h" #include "bswapdsp.h" #include "internal.h" @@ -87,17 +87,18 @@ static av_cold int mp_decode_init(AVCodecContext *avctx) return 0; } -static void mp_read_changes_map(MotionPixelsContext *mp, GetBitContext *gb, int count, int bits_len, int read_color) +static void mp_read_changes_map(MotionPixelsContext *mp, BitstreamContext *bc, + int count, int bits_len, int read_color) { uint16_t *pixels; int offset, w, h, color = 0, x, y, i; while (count--) { - offset = get_bits_long(gb, mp->offset_bits_len); - w = get_bits(gb, bits_len) + 1; - h = get_bits(gb, bits_len) + 1; + offset = bitstream_read(bc, mp->offset_bits_len); + w = bitstream_read(bc, bits_len) + 1; + h = bitstream_read(bc, bits_len) + 1; if (read_color) - color = get_bits(gb, 15); + color = bitstream_read(bc, 15); x = offset % mp->avctx->width; y = offset / mp->avctx->width; if (y >= mp->avctx->height) @@ -116,16 +117,17 @@ static void mp_read_changes_map(MotionPixelsContext *mp, GetBitContext *gb, int } } -static void mp_get_code(MotionPixelsContext *mp, GetBitContext *gb, int size, int code) +static void mp_get_code(MotionPixelsContext *mp, BitstreamContext *bc, + int size, int code) { - while (get_bits1(gb)) { + while (bitstream_read_bit(bc)) { ++size; if (size > mp->max_codes_bits) { av_log(mp->avctx, AV_LOG_ERROR, "invalid code size %d/%d\n", size, mp->max_codes_bits); return; } code <<= 1; - mp_get_code(mp, gb, size, code + 1); + mp_get_code(mp, bc, size, code + 1); } if (mp->current_codes_count >= MAX_HUFF_CODES) { av_log(mp->avctx, AV_LOG_ERROR, "too many codes\n"); @@ -135,18 +137,18 @@ static void mp_get_code(MotionPixelsContext *mp, GetBitContext *gb, int size, in mp->codes[mp->current_codes_count++].size = size; } -static void mp_read_codes_table(MotionPixelsContext *mp, GetBitContext *gb) +static void mp_read_codes_table(MotionPixelsContext *mp, BitstreamContext *bc) { if (mp->codes_count == 1) { - mp->codes[0].delta = get_bits(gb, 4); + mp->codes[0].delta = bitstream_read(bc, 4); } else { int i; - mp->max_codes_bits = get_bits(gb, 4); + mp->max_codes_bits = bitstream_read(bc, 4); for (i = 0; i < mp->codes_count; ++i) - mp->codes[i].delta = get_bits(gb, 4); + mp->codes[i].delta = bitstream_read(bc, 4); mp->current_codes_count = 0; - mp_get_code(mp, gb, 0, 0); + mp_get_code(mp, bc, 0, 0); } } @@ -175,16 +177,16 @@ static void mp_set_rgb_from_yuv(MotionPixelsContext *mp, int x, int y, const Yuv *(uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2] = color; } -static int mp_get_vlc(MotionPixelsContext *mp, GetBitContext *gb) +static int mp_get_vlc(MotionPixelsContext *mp, BitstreamContext *bc) { int i; - i = (mp->codes_count == 1) ? 0 : get_vlc2(gb, mp->vlc.table, mp->max_codes_bits, 1); + i = (mp->codes_count == 1) ? 0 : bitstream_read_vlc(bc, mp->vlc.table, mp->max_codes_bits, 1); i = FFMIN(i, FF_ARRAY_ELEMS(mp->codes) - 1); return mp->codes[i].delta; } -static void mp_decode_line(MotionPixelsContext *mp, GetBitContext *gb, int y) +static void mp_decode_line(MotionPixelsContext *mp, BitstreamContext *bc, int y) { YuvPixel p; const int y0 = y * mp->avctx->width; @@ -211,13 +213,13 @@ static void mp_decode_line(MotionPixelsContext *mp, GetBitContext *gb, int y) memset(mp->gradient_scale, 1, sizeof(mp->gradient_scale)); p = mp_get_yuv_from_rgb(mp, x - 1, y); } else { - p.y += mp_gradient(mp, 0, mp_get_vlc(mp, gb)); + p.y += mp_gradient(mp, 0, mp_get_vlc(mp, bc)); p.y = av_clip_uintp2(p.y, 5); if ((x & 3) == 0) { if ((y & 3) == 0) { - p.v += mp_gradient(mp, 1, mp_get_vlc(mp, gb)); + p.v += mp_gradient(mp, 1, mp_get_vlc(mp, bc)); p.v = av_clip_intp2(p.v, 5); - p.u += mp_gradient(mp, 2, mp_get_vlc(mp, gb)); + p.u += mp_gradient(mp, 2, mp_get_vlc(mp, bc)); p.u = av_clip_intp2(p.u, 5); mp->hpt[((y / 4) * mp->avctx->width + x) / 4] = p; } else { @@ -231,7 +233,8 @@ static void mp_decode_line(MotionPixelsContext *mp, GetBitContext *gb, int y) } } -static void mp_decode_frame_helper(MotionPixelsContext *mp, GetBitContext *gb) +static void mp_decode_frame_helper(MotionPixelsContext *mp, + BitstreamContext *bc) { YuvPixel p; int y, y0; @@ -241,12 +244,12 @@ static void mp_decode_frame_helper(MotionPixelsContext *mp, GetBitContext *gb) memset(mp->gradient_scale, 1, sizeof(mp->gradient_scale)); p = mp_get_yuv_from_rgb(mp, 0, y); } else { - p.y += mp_gradient(mp, 0, mp_get_vlc(mp, gb)); + p.y += mp_gradient(mp, 0, mp_get_vlc(mp, bc)); p.y = av_clip_uintp2(p.y, 5); if ((y & 3) == 0) { - p.v += mp_gradient(mp, 1, mp_get_vlc(mp, gb)); + p.v += mp_gradient(mp, 1, mp_get_vlc(mp, bc)); p.v = av_clip_intp2(p.v, 5); - p.u += mp_gradient(mp, 2, mp_get_vlc(mp, gb)); + p.u += mp_gradient(mp, 2, mp_get_vlc(mp, bc)); p.u = av_clip_intp2(p.u, 5); } mp->vpt[y] = p; @@ -255,7 +258,7 @@ static void mp_decode_frame_helper(MotionPixelsContext *mp, GetBitContext *gb) } for (y0 = 0; y0 < 2; ++y0) for (y = y0; y < mp->avctx->height; y += 2) - mp_decode_line(mp, gb, y); + mp_decode_line(mp, bc, y); } static int mp_decode_frame(AVCodecContext *avctx, @@ -265,7 +268,7 @@ static int mp_decode_frame(AVCodecContext *avctx, const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; MotionPixelsContext *mp = avctx->priv_data; - GetBitContext gb; + BitstreamContext bc; int i, count1, count2, sz, ret; if ((ret = ff_reget_buffer(avctx, mp->frame)) < 0) { @@ -282,29 +285,29 @@ static int mp_decode_frame(AVCodecContext *avctx, if (buf_size & 3) memcpy(mp->bswapbuf + (buf_size & ~3), buf + (buf_size & ~3), buf_size & 3); memset(mp->bswapbuf + buf_size, 0, AV_INPUT_BUFFER_PADDING_SIZE); - init_get_bits(&gb, mp->bswapbuf, buf_size * 8); + bitstream_init(&bc, mp->bswapbuf, buf_size * 8); memset(mp->changes_map, 0, avctx->width * avctx->height); for (i = !(avctx->extradata[1] & 2); i < 2; ++i) { - count1 = get_bits(&gb, 12); - count2 = get_bits(&gb, 12); - mp_read_changes_map(mp, &gb, count1, 8, i); - mp_read_changes_map(mp, &gb, count2, 4, i); + count1 = bitstream_read(&bc, 12); + count2 = bitstream_read(&bc, 12); + mp_read_changes_map(mp, &bc, count1, 8, i); + mp_read_changes_map(mp, &bc, count2, 4, i); } - mp->codes_count = get_bits(&gb, 4); + mp->codes_count = bitstream_read(&bc, 4); if (mp->codes_count == 0) goto end; if (mp->changes_map[0] == 0) { - *(uint16_t *)mp->frame->data[0] = get_bits(&gb, 15); + *(uint16_t *)mp->frame->data[0] = bitstream_read(&bc, 15); mp->changes_map[0] = 1; } - mp_read_codes_table(mp, &gb); + mp_read_codes_table(mp, &bc); - sz = get_bits(&gb, 18); + sz = bitstream_read(&bc, 18); if (avctx->extradata[0] != 5) - sz += get_bits(&gb, 18); + sz += bitstream_read(&bc, 18); if (sz == 0) goto end; @@ -312,7 +315,7 @@ static int mp_decode_frame(AVCodecContext *avctx, goto end; if (init_vlc(&mp->vlc, mp->max_codes_bits, mp->codes_count, &mp->codes[0].size, sizeof(HuffCode), 1, &mp->codes[0].code, sizeof(HuffCode), 4, 0)) goto end; - mp_decode_frame_helper(mp, &gb); + mp_decode_frame_helper(mp, &bc); ff_free_vlc(&mp->vlc); end: |