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author | Baptiste Coudurier <baptiste.coudurier@gmail.com> | 2011-04-27 18:34:10 +0200 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2011-04-27 20:08:09 +0200 |
commit | 6d4c49a2afdb823418297bb9157890b80d45c0fe (patch) | |
tree | 840b69b53989450bfedf8ad38553092750a7ab5e /libavcodec/pngdec.c | |
parent | d6f910ea47255b519e0b71c33d74c409a29ab3db (diff) | |
download | ffmpeg-streaming-6d4c49a2afdb823418297bb9157890b80d45c0fe.zip ffmpeg-streaming-6d4c49a2afdb823418297bb9157890b80d45c0fe.tar.gz |
Move png mmx functions into x86/png_mmx.c, remove them from DSPContext.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/pngdec.c')
-rw-r--r-- | libavcodec/pngdec.c | 83 |
1 files changed, 36 insertions, 47 deletions
diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c index 2f9b343..17fea68 100644 --- a/libavcodec/pngdec.c +++ b/libavcodec/pngdec.c @@ -18,11 +18,13 @@ * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ + +//#define DEBUG + #include "libavutil/imgutils.h" #include "avcodec.h" #include "bytestream.h" #include "png.h" -#include "dsputil.h" /* TODO: * - add 2, 4 and 16 bit depth support @@ -30,42 +32,6 @@ #include <zlib.h> -//#define DEBUG - -typedef struct PNGDecContext { - DSPContext dsp; - - const uint8_t *bytestream; - const uint8_t *bytestream_start; - const uint8_t *bytestream_end; - AVFrame picture1, picture2; - AVFrame *current_picture, *last_picture; - - int state; - int width, height; - int bit_depth; - int color_type; - int compression_type; - int interlace_type; - int filter_type; - int channels; - int bits_per_pixel; - int bpp; - - uint8_t *image_buf; - int image_linesize; - uint32_t palette[256]; - uint8_t *crow_buf; - uint8_t *last_row; - uint8_t *tmp_row; - int pass; - int crow_size; /* compressed row size (include filter type) */ - int row_size; /* decompressed row size */ - int pass_row_size; /* decompress row size of the current pass */ - int y; - z_stream zstream; -} PNGDecContext; - /* Mask to determine which y pixels can be written in a pass */ static const uint8_t png_pass_dsp_ymask[NB_PASSES] = { 0xff, 0xff, 0x0f, 0xcc, 0x33, 0xff, 0x55, @@ -134,7 +100,23 @@ static void png_put_interlaced_row(uint8_t *dst, int width, } } -void ff_add_png_paeth_prediction(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp) +// 0x7f7f7f7f or 0x7f7f7f7f7f7f7f7f or whatever, depending on the cpu's native arithmetic size +#define pb_7f (~0UL/255 * 0x7f) +#define pb_80 (~0UL/255 * 0x80) + +static void add_bytes_l2_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w) +{ + long i; + for(i=0; i<=w-sizeof(long); i+=sizeof(long)){ + long a = *(long*)(src1+i); + long b = *(long*)(src2+i); + *(long*)(dst+i) = ((a&pb_7f) + (b&pb_7f)) ^ ((a^b)&pb_80); + } + for(; i<w; i++) + dst[i] = src1[i]+src2[i]; +} + +static void add_paeth_prediction_c(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp) { int i; for(i = 0; i < w; i++) { @@ -191,7 +173,7 @@ void ff_add_png_paeth_prediction(uint8_t *dst, uint8_t *src, uint8_t *top, int w } /* NOTE: 'dst' can be equal to 'last' */ -static void png_filter_row(DSPContext *dsp, uint8_t *dst, int filter_type, +static void png_filter_row(PNGDecContext *s, uint8_t *dst, int filter_type, uint8_t *src, uint8_t *last, int size, int bpp) { int i, p, r, g, b, a; @@ -217,7 +199,7 @@ static void png_filter_row(DSPContext *dsp, uint8_t *dst, int filter_type, } break; case PNG_FILTER_VALUE_UP: - dsp->add_bytes_l2(dst, src, last, size); + s->add_bytes_l2(dst, src, last, size); break; case PNG_FILTER_VALUE_AVG: for(i = 0; i < bpp; i++) { @@ -235,10 +217,10 @@ static void png_filter_row(DSPContext *dsp, uint8_t *dst, int filter_type, if(bpp > 1 && size > 4) { // would write off the end of the array if we let it process the last pixel with bpp=3 int w = bpp==4 ? size : size-3; - dsp->add_png_paeth_prediction(dst+i, src+i, last+i, w-i, bpp); + s->add_paeth_prediction(dst+i, src+i, last+i, w-i, bpp); i = w; } - ff_add_png_paeth_prediction(dst+i, src+i, last+i, size-i, bpp); + add_paeth_prediction_c(dst+i, src+i, last+i, size-i, bpp); break; } } @@ -291,7 +273,7 @@ static void png_handle_row(PNGDecContext *s) ptr = s->image_buf + s->image_linesize * s->y; /* need to swap bytes correctly for RGB_ALPHA */ if (s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) { - png_filter_row(&s->dsp, s->tmp_row, s->crow_buf[0], s->crow_buf + 1, + png_filter_row(s, s->tmp_row, s->crow_buf[0], s->crow_buf + 1, s->last_row, s->row_size, s->bpp); convert_to_rgb32(ptr, s->tmp_row, s->width, s->filter_type == PNG_FILTER_TYPE_LOCO); FFSWAP(uint8_t*, s->last_row, s->tmp_row); @@ -302,7 +284,7 @@ static void png_handle_row(PNGDecContext *s) else last_row = ptr - s->image_linesize; - png_filter_row(&s->dsp, ptr, s->crow_buf[0], s->crow_buf + 1, + png_filter_row(s, ptr, s->crow_buf[0], s->crow_buf + 1, last_row, s->row_size, s->bpp); } /* loco lags by 1 row so that it doesn't interfere with top prediction */ @@ -325,7 +307,7 @@ static void png_handle_row(PNGDecContext *s) wait for the next one */ if (got_line) break; - png_filter_row(&s->dsp, s->tmp_row, s->crow_buf[0], s->crow_buf + 1, + png_filter_row(s, s->tmp_row, s->crow_buf[0], s->crow_buf + 1, s->last_row, s->pass_row_size, s->bpp); FFSWAP(uint8_t*, s->last_row, s->tmp_row); got_line = 1; @@ -633,14 +615,21 @@ static int decode_frame(AVCodecContext *avctx, goto the_end; } -static av_cold int png_dec_init(AVCodecContext *avctx){ +static av_cold int png_dec_init(AVCodecContext *avctx) +{ PNGDecContext *s = avctx->priv_data; s->current_picture = &s->picture1; s->last_picture = &s->picture2; avcodec_get_frame_defaults(&s->picture1); avcodec_get_frame_defaults(&s->picture2); - dsputil_init(&s->dsp, avctx); + + ff_png_init_mmx(s); + + if (!s->add_paeth_prediction) + s->add_paeth_prediction = add_paeth_prediction_c; + if (!s->add_bytes_l2) + s->add_bytes_l2 = add_bytes_l2_c; return 0; } |