From bb2864fb2119ddc7e349ddfa566b1e9ec927695d Mon Sep 17 00:00:00 2001 From: =?utf8?q?M=C3=A5ns=20Rullg=C3=A5rd?= Date: Tue, 23 Jan 2007 21:42:36 +0000 Subject: [PATCH] remove unused files Originally committed as revision 7675 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/png.c | 887 ------------------------------------------------------ libavformat/pnm.c | 478 ----------------------------- 2 files changed, 1365 deletions(-) delete mode 100644 libavformat/png.c delete mode 100644 libavformat/pnm.c diff --git a/libavformat/png.c b/libavformat/png.c deleted file mode 100644 index af4694b..0000000 --- a/libavformat/png.c +++ /dev/null @@ -1,887 +0,0 @@ -/* - * PNG image format - * Copyright (c) 2003 Fabrice Bellard. - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "avformat.h" - -/* TODO: - * - add 2, 4 and 16 bit depth support - * - use filters when generating a png (better compression) - */ - -#include - -//#define DEBUG - -#define PNG_COLOR_MASK_PALETTE 1 -#define PNG_COLOR_MASK_COLOR 2 -#define PNG_COLOR_MASK_ALPHA 4 - -#define PNG_COLOR_TYPE_GRAY 0 -#define PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE) -#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR) -#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA) -#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA) - -#define PNG_FILTER_VALUE_NONE 0 -#define PNG_FILTER_VALUE_SUB 1 -#define PNG_FILTER_VALUE_UP 2 -#define PNG_FILTER_VALUE_AVG 3 -#define PNG_FILTER_VALUE_PAETH 4 - -#define PNG_IHDR 0x0001 -#define PNG_IDAT 0x0002 -#define PNG_ALLIMAGE 0x0004 -#define PNG_PLTE 0x0008 - -#define NB_PASSES 7 - -#define IOBUF_SIZE 4096 - -typedef struct PNGDecodeState { - 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; -} PNGDecodeState; - -static const uint8_t pngsig[8] = {137, 80, 78, 71, 13, 10, 26, 10}; - -/* Mask to determine which y pixels are valid in a pass */ -static const uint8_t png_pass_ymask[NB_PASSES] = { - 0x80, 0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, -}; - -/* 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, -}; - -/* minimum x value */ -static const uint8_t png_pass_xmin[NB_PASSES] = { - 0, 4, 0, 2, 0, 1, 0 -}; - -/* x shift to get row width */ -static const uint8_t png_pass_xshift[NB_PASSES] = { - 3, 3, 2, 2, 1, 1, 0 -}; - -/* Mask to determine which pixels are valid in a pass */ -static const uint8_t png_pass_mask[NB_PASSES] = { - 0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff -}; - -/* Mask to determine which pixels to overwrite while displaying */ -static const uint8_t png_pass_dsp_mask[NB_PASSES] = { - 0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff -}; - -static int png_probe(AVProbeData *pd) -{ - if (pd->buf_size >= 8 && - memcmp(pd->buf, pngsig, 8) == 0) - return AVPROBE_SCORE_MAX; - else - return 0; -} - -static void *png_zalloc(void *opaque, unsigned int items, unsigned int size) -{ - return av_malloc(items * size); -} - -static void png_zfree(void *opaque, void *ptr) -{ - av_free(ptr); -} - -static int png_get_nb_channels(int color_type) -{ - int channels; - channels = 1; - if ((color_type & (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE)) == - PNG_COLOR_MASK_COLOR) - channels = 3; - if (color_type & PNG_COLOR_MASK_ALPHA) - channels++; - return channels; -} - -/* compute the row size of an interleaved pass */ -static int png_pass_row_size(int pass, int bits_per_pixel, int width) -{ - int shift, xmin, pass_width; - - xmin = png_pass_xmin[pass]; - if (width <= xmin) - return 0; - shift = png_pass_xshift[pass]; - pass_width = (width - xmin + (1 << shift) - 1) >> shift; - return (pass_width * bits_per_pixel + 7) >> 3; -} - -/* NOTE: we try to construct a good looking image at each pass. width - is the original image width. We also do pixel format convertion at - this stage */ -static void png_put_interlaced_row(uint8_t *dst, int width, - int bits_per_pixel, int pass, - int color_type, const uint8_t *src) -{ - int x, mask, dsp_mask, j, src_x, b, bpp; - uint8_t *d; - const uint8_t *s; - - mask = png_pass_mask[pass]; - dsp_mask = png_pass_dsp_mask[pass]; - switch(bits_per_pixel) { - case 1: - /* we must intialize the line to zero before writing to it */ - if (pass == 0) - memset(dst, 0, (width + 7) >> 3); - src_x = 0; - for(x = 0; x < width; x++) { - j = (x & 7); - if ((dsp_mask << j) & 0x80) { - b = (src[src_x >> 3] >> (7 - (src_x & 7))) & 1; - dst[x >> 3] |= b << (7 - j); - } - if ((mask << j) & 0x80) - src_x++; - } - break; - default: - bpp = bits_per_pixel >> 3; - d = dst; - s = src; - if (color_type == PNG_COLOR_TYPE_RGB_ALPHA) { - for(x = 0; x < width; x++) { - j = x & 7; - if ((dsp_mask << j) & 0x80) { - *(uint32_t *)d = (s[3] << 24) | (s[0] << 16) | (s[1] << 8) | s[2]; - } - d += bpp; - if ((mask << j) & 0x80) - s += bpp; - } - } else { - for(x = 0; x < width; x++) { - j = x & 7; - if ((dsp_mask << j) & 0x80) { - memcpy(d, s, bpp); - } - d += bpp; - if ((mask << j) & 0x80) - s += bpp; - } - } - break; - } -} - -static void png_get_interlaced_row(uint8_t *dst, int row_size, - int bits_per_pixel, int pass, - const uint8_t *src, int width) -{ - int x, mask, dst_x, j, b, bpp; - uint8_t *d; - const uint8_t *s; - - mask = png_pass_mask[pass]; - switch(bits_per_pixel) { - case 1: - memset(dst, 0, row_size); - dst_x = 0; - for(x = 0; x < width; x++) { - j = (x & 7); - if ((mask << j) & 0x80) { - b = (src[x >> 3] >> (7 - j)) & 1; - dst[dst_x >> 3] |= b << (7 - (dst_x & 7)); - dst_x++; - } - } - break; - default: - bpp = bits_per_pixel >> 3; - d = dst; - s = src; - for(x = 0; x < width; x++) { - j = x & 7; - if ((mask << j) & 0x80) { - memcpy(d, s, bpp); - d += bpp; - } - s += bpp; - } - break; - } -} - -/* XXX: optimize */ -/* NOTE: 'dst' can be equal to 'last' */ -static void png_filter_row(uint8_t *dst, int filter_type, - uint8_t *src, uint8_t *last, int size, int bpp) -{ - int i, p; - - switch(filter_type) { - case PNG_FILTER_VALUE_NONE: - memcpy(dst, src, size); - break; - case PNG_FILTER_VALUE_SUB: - for(i = 0; i < bpp; i++) { - dst[i] = src[i]; - } - for(i = bpp; i < size; i++) { - p = dst[i - bpp]; - dst[i] = p + src[i]; - } - break; - case PNG_FILTER_VALUE_UP: - for(i = 0; i < size; i++) { - p = last[i]; - dst[i] = p + src[i]; - } - break; - case PNG_FILTER_VALUE_AVG: - for(i = 0; i < bpp; i++) { - p = (last[i] >> 1); - dst[i] = p + src[i]; - } - for(i = bpp; i < size; i++) { - p = ((dst[i - bpp] + last[i]) >> 1); - dst[i] = p + src[i]; - } - break; - case PNG_FILTER_VALUE_PAETH: - for(i = 0; i < bpp; i++) { - p = last[i]; - dst[i] = p + src[i]; - } - for(i = bpp; i < size; i++) { - int a, b, c, pa, pb, pc; - - a = dst[i - bpp]; - b = last[i]; - c = last[i - bpp]; - - p = b - c; - pc = a - c; - - pa = abs(p); - pb = abs(pc); - pc = abs(p + pc); - - if (pa <= pb && pa <= pc) - p = a; - else if (pb <= pc) - p = b; - else - p = c; - dst[i] = p + src[i]; - } - break; - } -} - -static void convert_from_rgba32(uint8_t *dst, const uint8_t *src, int width) -{ - uint8_t *d; - int j; - unsigned int v; - - d = dst; - for(j = 0; j < width; j++) { - v = ((const uint32_t *)src)[j]; - d[0] = v >> 16; - d[1] = v >> 8; - d[2] = v; - d[3] = v >> 24; - d += 4; - } -} - -static void convert_to_rgba32(uint8_t *dst, const uint8_t *src, int width) -{ - int j; - unsigned int r, g, b, a; - - for(j = 0;j < width; j++) { - r = src[0]; - g = src[1]; - b = src[2]; - a = src[3]; - *(uint32_t *)dst = (a << 24) | (r << 16) | (g << 8) | b; - dst += 4; - src += 4; - } -} - -/* process exactly one decompressed row */ -static void png_handle_row(PNGDecodeState *s) -{ - uint8_t *ptr, *last_row; - int got_line; - - if (!s->interlace_type) { - 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->tmp_row, s->crow_buf[0], s->crow_buf + 1, - s->last_row, s->row_size, s->bpp); - memcpy(s->last_row, s->tmp_row, s->row_size); - convert_to_rgba32(ptr, s->tmp_row, s->width); - } else { - /* in normal case, we avoid one copy */ - if (s->y == 0) - last_row = s->last_row; - else - last_row = ptr - s->image_linesize; - - png_filter_row(ptr, s->crow_buf[0], s->crow_buf + 1, - last_row, s->row_size, s->bpp); - } - s->y++; - if (s->y == s->height) { - s->state |= PNG_ALLIMAGE; - } - } else { - got_line = 0; - for(;;) { - ptr = s->image_buf + s->image_linesize * s->y; - if ((png_pass_ymask[s->pass] << (s->y & 7)) & 0x80) { - /* if we already read one row, it is time to stop to - wait for the next one */ - if (got_line) - break; - png_filter_row(s->tmp_row, s->crow_buf[0], s->crow_buf + 1, - s->last_row, s->pass_row_size, s->bpp); - memcpy(s->last_row, s->tmp_row, s->pass_row_size); - got_line = 1; - } - if ((png_pass_dsp_ymask[s->pass] << (s->y & 7)) & 0x80) { - /* NOTE: rgba32 is handled directly in png_put_interlaced_row */ - png_put_interlaced_row(ptr, s->width, s->bits_per_pixel, s->pass, - s->color_type, s->last_row); - } - s->y++; - if (s->y == s->height) { - for(;;) { - if (s->pass == NB_PASSES - 1) { - s->state |= PNG_ALLIMAGE; - goto the_end; - } else { - s->pass++; - s->y = 0; - s->pass_row_size = png_pass_row_size(s->pass, - s->bits_per_pixel, - s->width); - s->crow_size = s->pass_row_size + 1; - if (s->pass_row_size != 0) - break; - /* skip pass if empty row */ - } - } - } - } - the_end: ; - } -} - -static int png_decode_idat(PNGDecodeState *s, ByteIOContext *f, int length) -{ - uint8_t buf[IOBUF_SIZE]; - int buf_size; - int ret; - while (length > 0) { - /* read the buffer */ - buf_size = IOBUF_SIZE; - if (buf_size > length) - buf_size = length; - ret = get_buffer(f, buf, buf_size); - if (ret != buf_size) - return -1; - s->zstream.avail_in = buf_size; - s->zstream.next_in = buf; - /* decode one line if possible */ - while (s->zstream.avail_in > 0) { - ret = inflate(&s->zstream, Z_PARTIAL_FLUSH); - if (ret != Z_OK && ret != Z_STREAM_END) { - return -1; - } - if (s->zstream.avail_out == 0) { - if (!(s->state & PNG_ALLIMAGE)) { - png_handle_row(s); - } - s->zstream.avail_out = s->crow_size; - s->zstream.next_out = s->crow_buf; - } - } - length -= buf_size; - } - return 0; -} - -static int png_read(ByteIOContext *f, - int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque) -{ - AVImageInfo info1, *info = &info1; - PNGDecodeState s1, *s = &s1; - uint32_t tag, length; - int ret, crc; - uint8_t buf[8]; - - /* check signature */ - ret = get_buffer(f, buf, 8); - if (ret != 8) - return -1; - if (memcmp(buf, pngsig, 8) != 0) - return -1; - memset(s, 0, sizeof(PNGDecodeState)); - /* init the zlib */ - s->zstream.zalloc = png_zalloc; - s->zstream.zfree = png_zfree; - s->zstream.opaque = NULL; - ret = inflateInit(&s->zstream); - if (ret != Z_OK) - return -1; - for(;;) { - if (url_feof(f)) - goto fail; - length = get_be32(f); - if (length > 0x7fffffff) - goto fail; - tag = get_le32(f); -#ifdef DEBUG - printf("png: tag=%c%c%c%c length=%u\n", - (tag & 0xff), - ((tag >> 8) & 0xff), - ((tag >> 16) & 0xff), - ((tag >> 24) & 0xff), length); -#endif - switch(tag) { - case MKTAG('I', 'H', 'D', 'R'): - if (length != 13) - goto fail; - s->width = get_be32(f); - s->height = get_be32(f); - s->bit_depth = get_byte(f); - s->color_type = get_byte(f); - s->compression_type = get_byte(f); - s->filter_type = get_byte(f); - s->interlace_type = get_byte(f); - crc = get_be32(f); - s->state |= PNG_IHDR; -#ifdef DEBUG - printf("width=%d height=%d depth=%d color_type=%d compression_type=%d filter_type=%d interlace_type=%d\n", - s->width, s->height, s->bit_depth, s->color_type, - s->compression_type, s->filter_type, s->interlace_type); -#endif - break; - case MKTAG('I', 'D', 'A', 'T'): - if (!(s->state & PNG_IHDR)) - goto fail; - if (!(s->state & PNG_IDAT)) { - /* init image info */ - info->width = s->width; - info->height = s->height; - info->interleaved = (s->interlace_type != 0); - - s->channels = png_get_nb_channels(s->color_type); - s->bits_per_pixel = s->bit_depth * s->channels; - s->bpp = (s->bits_per_pixel + 7) >> 3; - s->row_size = (info->width * s->bits_per_pixel + 7) >> 3; - - if (s->bit_depth == 8 && - s->color_type == PNG_COLOR_TYPE_RGB) { - info->pix_fmt = PIX_FMT_RGB24; - } else if (s->bit_depth == 8 && - s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) { - info->pix_fmt = PIX_FMT_RGBA32; - } else if (s->bit_depth == 8 && - s->color_type == PNG_COLOR_TYPE_GRAY) { - info->pix_fmt = PIX_FMT_GRAY8; - } else if (s->bit_depth == 1 && - s->color_type == PNG_COLOR_TYPE_GRAY) { - info->pix_fmt = PIX_FMT_MONOBLACK; - } else if (s->color_type == PNG_COLOR_TYPE_PALETTE) { - info->pix_fmt = PIX_FMT_PAL8; - } else { - goto fail; - } - ret = alloc_cb(opaque, info); - if (ret) - goto the_end; - - /* compute the compressed row size */ - if (!s->interlace_type) { - s->crow_size = s->row_size + 1; - } else { - s->pass = 0; - s->pass_row_size = png_pass_row_size(s->pass, - s->bits_per_pixel, - s->width); - s->crow_size = s->pass_row_size + 1; - } -#ifdef DEBUG - printf("row_size=%d crow_size =%d\n", - s->row_size, s->crow_size); -#endif - s->image_buf = info->pict.data[0]; - s->image_linesize = info->pict.linesize[0]; - /* copy the palette if needed */ - if (s->color_type == PNG_COLOR_TYPE_PALETTE) - memcpy(info->pict.data[1], s->palette, 256 * sizeof(uint32_t)); - /* empty row is used if differencing to the first row */ - s->last_row = av_mallocz(s->row_size); - if (!s->last_row) - goto fail; - if (s->interlace_type || - s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) { - s->tmp_row = av_malloc(s->row_size); - if (!s->tmp_row) - goto fail; - } - /* compressed row */ - s->crow_buf = av_malloc(s->row_size + 1); - if (!s->crow_buf) - goto fail; - s->zstream.avail_out = s->crow_size; - s->zstream.next_out = s->crow_buf; - } - s->state |= PNG_IDAT; - if (png_decode_idat(s, f, length) < 0) - goto fail; - /* skip crc */ - crc = get_be32(f); - break; - case MKTAG('P', 'L', 'T', 'E'): - { - int n, i, r, g, b; - - if ((length % 3) != 0 || length > 256 * 3) - goto skip_tag; - /* read the palette */ - n = length / 3; - for(i=0;ipalette[i] = (0xff << 24) | (r << 16) | (g << 8) | b; - } - for(;i<256;i++) { - s->palette[i] = (0xff << 24); - } - s->state |= PNG_PLTE; - crc = get_be32(f); - } - break; - case MKTAG('t', 'R', 'N', 'S'): - { - int v, i; - - /* read the transparency. XXX: Only palette mode supported */ - if (s->color_type != PNG_COLOR_TYPE_PALETTE || - length > 256 || - !(s->state & PNG_PLTE)) - goto skip_tag; - for(i=0;ipalette[i] = (s->palette[i] & 0x00ffffff) | (v << 24); - } - crc = get_be32(f); - } - break; - case MKTAG('I', 'E', 'N', 'D'): - if (!(s->state & PNG_ALLIMAGE)) - goto fail; - crc = get_be32(f); - goto exit_loop; - default: - /* skip tag */ - skip_tag: - url_fskip(f, length + 4); - break; - } - } - exit_loop: - ret = 0; - the_end: - inflateEnd(&s->zstream); - av_free(s->crow_buf); - av_free(s->last_row); - av_free(s->tmp_row); - return ret; - fail: - ret = -1; - goto the_end; -} - -static void png_write_chunk(ByteIOContext *f, uint32_t tag, - const uint8_t *buf, int length) -{ - uint32_t crc; - uint8_t tagbuf[4]; - - put_be32(f, length); - crc = crc32(0, Z_NULL, 0); - tagbuf[0] = tag; - tagbuf[1] = tag >> 8; - tagbuf[2] = tag >> 16; - tagbuf[3] = tag >> 24; - crc = crc32(crc, tagbuf, 4); - put_le32(f, tag); - if (length > 0) { - crc = crc32(crc, buf, length); - put_buffer(f, buf, length); - } - put_be32(f, crc); -} - -/* XXX: use avcodec generic function ? */ -static void to_be32(uint8_t *p, uint32_t v) -{ - p[0] = v >> 24; - p[1] = v >> 16; - p[2] = v >> 8; - p[3] = v; -} - -typedef struct PNGEncodeState { - ByteIOContext *f; - z_stream zstream; - uint8_t buf[IOBUF_SIZE]; -} PNGEncodeState; - - -/* XXX: do filtering */ -static int png_write_row(PNGEncodeState *s, const uint8_t *data, int size) -{ - int ret; - - s->zstream.avail_in = size; - s->zstream.next_in = (uint8_t *)data; - while (s->zstream.avail_in > 0) { - ret = deflate(&s->zstream, Z_NO_FLUSH); - if (ret != Z_OK) - return -1; - if (s->zstream.avail_out == 0) { - png_write_chunk(s->f, MKTAG('I', 'D', 'A', 'T'), s->buf, IOBUF_SIZE); - s->zstream.avail_out = IOBUF_SIZE; - s->zstream.next_out = s->buf; - } - } - return 0; -} - -static int png_write(ByteIOContext *f, AVImageInfo *info) -{ - PNGEncodeState s1, *s = &s1; - int bit_depth, color_type, y, len, row_size, ret, is_progressive; - int bits_per_pixel, pass_row_size; - uint8_t *ptr; - uint8_t *crow_buf = NULL; - uint8_t *tmp_buf = NULL; - - s->f = f; - is_progressive = info->interleaved; - switch(info->pix_fmt) { - case PIX_FMT_RGBA32: - bit_depth = 8; - color_type = PNG_COLOR_TYPE_RGB_ALPHA; - break; - case PIX_FMT_RGB24: - bit_depth = 8; - color_type = PNG_COLOR_TYPE_RGB; - break; - case PIX_FMT_GRAY8: - bit_depth = 8; - color_type = PNG_COLOR_TYPE_GRAY; - break; - case PIX_FMT_MONOBLACK: - bit_depth = 1; - color_type = PNG_COLOR_TYPE_GRAY; - break; - case PIX_FMT_PAL8: - bit_depth = 8; - color_type = PNG_COLOR_TYPE_PALETTE; - break; - default: - return -1; - } - bits_per_pixel = png_get_nb_channels(color_type) * bit_depth; - row_size = (info->width * bits_per_pixel + 7) >> 3; - - s->zstream.zalloc = png_zalloc; - s->zstream.zfree = png_zfree; - s->zstream.opaque = NULL; - ret = deflateInit2(&s->zstream, Z_DEFAULT_COMPRESSION, - Z_DEFLATED, 15, 8, Z_DEFAULT_STRATEGY); - if (ret != Z_OK) - return -1; - crow_buf = av_malloc(row_size + 1); - if (!crow_buf) - goto fail; - if (is_progressive) { - tmp_buf = av_malloc(row_size + 1); - if (!tmp_buf) - goto fail; - } - - /* write png header */ - put_buffer(f, pngsig, 8); - - to_be32(s->buf, info->width); - to_be32(s->buf + 4, info->height); - s->buf[8] = bit_depth; - s->buf[9] = color_type; - s->buf[10] = 0; /* compression type */ - s->buf[11] = 0; /* filter type */ - s->buf[12] = is_progressive; /* interlace type */ - - png_write_chunk(f, MKTAG('I', 'H', 'D', 'R'), s->buf, 13); - - /* put the palette if needed */ - if (color_type == PNG_COLOR_TYPE_PALETTE) { - int has_alpha, alpha, i; - unsigned int v; - uint32_t *palette; - uint8_t *alpha_ptr; - - palette = (uint32_t *)info->pict.data[1]; - ptr = s->buf; - alpha_ptr = s->buf + 256 * 3; - has_alpha = 0; - for(i = 0; i < 256; i++) { - v = palette[i]; - alpha = v >> 24; - if (alpha != 0xff) - has_alpha = 1; - *alpha_ptr++ = alpha; - ptr[0] = v >> 16; - ptr[1] = v >> 8; - ptr[2] = v; - ptr += 3; - } - png_write_chunk(f, MKTAG('P', 'L', 'T', 'E'), s->buf, 256 * 3); - if (has_alpha) { - png_write_chunk(f, MKTAG('t', 'R', 'N', 'S'), s->buf + 256 * 3, 256); - } - } - - /* now put each row */ - s->zstream.avail_out = IOBUF_SIZE; - s->zstream.next_out = s->buf; - if (is_progressive) { - uint8_t *ptr1; - int pass; - - for(pass = 0; pass < NB_PASSES; pass++) { - /* NOTE: a pass is completely omited if no pixels would be - output */ - pass_row_size = png_pass_row_size(pass, bits_per_pixel, info->width); - if (pass_row_size > 0) { - for(y = 0; y < info->height; y++) { - if ((png_pass_ymask[pass] << (y & 7)) & 0x80) { - ptr = info->pict.data[0] + y * info->pict.linesize[0]; - if (color_type == PNG_COLOR_TYPE_RGB_ALPHA) { - convert_from_rgba32(tmp_buf, ptr, info->width); - ptr1 = tmp_buf; - } else { - ptr1 = ptr; - } - png_get_interlaced_row(crow_buf + 1, pass_row_size, - bits_per_pixel, pass, - ptr1, info->width); - crow_buf[0] = PNG_FILTER_VALUE_NONE; - png_write_row(s, crow_buf, pass_row_size + 1); - } - } - } - } - } else { - for(y = 0; y < info->height; y++) { - ptr = info->pict.data[0] + y * info->pict.linesize[0]; - if (color_type == PNG_COLOR_TYPE_RGB_ALPHA) - convert_from_rgba32(crow_buf + 1, ptr, info->width); - else - memcpy(crow_buf + 1, ptr, row_size); - crow_buf[0] = PNG_FILTER_VALUE_NONE; - png_write_row(s, crow_buf, row_size + 1); - } - } - /* compress last bytes */ - for(;;) { - ret = deflate(&s->zstream, Z_FINISH); - if (ret == Z_OK || ret == Z_STREAM_END) { - len = IOBUF_SIZE - s->zstream.avail_out; - if (len > 0) { - png_write_chunk(f, MKTAG('I', 'D', 'A', 'T'), s->buf, len); - } - s->zstream.avail_out = IOBUF_SIZE; - s->zstream.next_out = s->buf; - if (ret == Z_STREAM_END) - break; - } else { - goto fail; - } - } - png_write_chunk(f, MKTAG('I', 'E', 'N', 'D'), NULL, 0); - - put_flush_packet(f); - ret = 0; - the_end: - av_free(crow_buf); - av_free(tmp_buf); - deflateEnd(&s->zstream); - return ret; - fail: - ret = -1; - goto the_end; -} - -AVImageFormat png_image_format = { - "png", - "png", - png_probe, - png_read, - (1 << PIX_FMT_RGBA32) | (1 << PIX_FMT_RGB24) | (1 << PIX_FMT_GRAY8) | - (1 << PIX_FMT_MONOBLACK) | (1 << PIX_FMT_PAL8), - png_write, - AVIMAGE_INTERLEAVED, -}; diff --git a/libavformat/pnm.c b/libavformat/pnm.c deleted file mode 100644 index ade5d7c..0000000 --- a/libavformat/pnm.c +++ /dev/null @@ -1,478 +0,0 @@ -/* - * PNM image format - * Copyright (c) 2002, 2003 Fabrice Bellard. - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "avformat.h" - -static inline int pnm_space(int c) -{ - return (c == ' ' || c == '\n' || c == '\r' || c == '\t'); -} - -static void pnm_get(ByteIOContext *f, char *str, int buf_size) -{ - char *s; - int c; - - /* skip spaces and comments */ - for(;;) { - c = url_fgetc(f); - if (c == '#') { - do { - c = url_fgetc(f); - } while (c != '\n' && c != URL_EOF); - } else if (!pnm_space(c)) { - break; - } - } - - s = str; - while (c != URL_EOF && !pnm_space(c)) { - if ((s - str) < buf_size - 1) - *s++ = c; - c = url_fgetc(f); - } - *s = '\0'; -} - -static int pnm_read1(ByteIOContext *f, - int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque, - int allow_yuv) -{ - int i, n, linesize, h; - char buf1[32]; - unsigned char *ptr; - AVImageInfo info1, *info = &info1; - int ret; - - pnm_get(f, buf1, sizeof(buf1)); - if (!strcmp(buf1, "P4")) { - info->pix_fmt = PIX_FMT_MONOWHITE; - } else if (!strcmp(buf1, "P5")) { - if (allow_yuv) - info->pix_fmt = PIX_FMT_YUV420P; - else - info->pix_fmt = PIX_FMT_GRAY8; - } else if (!strcmp(buf1, "P6")) { - info->pix_fmt = PIX_FMT_RGB24; - } else { - return AVERROR_INVALIDDATA; - } - pnm_get(f, buf1, sizeof(buf1)); - info->width = atoi(buf1); - if (info->width <= 0) - return AVERROR_INVALIDDATA; - pnm_get(f, buf1, sizeof(buf1)); - info->height = atoi(buf1); - if (info->height <= 0) - return AVERROR_INVALIDDATA; - if (info->pix_fmt != PIX_FMT_MONOWHITE) { - pnm_get(f, buf1, sizeof(buf1)); - } - - /* more check if YUV420 */ - if (info->pix_fmt == PIX_FMT_YUV420P) { - if ((info->width & 1) != 0) - return AVERROR_INVALIDDATA; - h = (info->height * 2); - if ((h % 3) != 0) - return AVERROR_INVALIDDATA; - h /= 3; - info->height = h; - } - - ret = alloc_cb(opaque, info); - if (ret) - return ret; - - switch(info->pix_fmt) { - default: - return AVERROR_INVALIDDATA; - case PIX_FMT_RGB24: - n = info->width * 3; - goto do_read; - case PIX_FMT_GRAY8: - n = info->width; - goto do_read; - case PIX_FMT_MONOWHITE: - n = (info->width + 7) >> 3; - do_read: - ptr = info->pict.data[0]; - linesize = info->pict.linesize[0]; - for(i = 0; i < info->height; i++) { - get_buffer(f, ptr, n); - ptr += linesize; - } - break; - case PIX_FMT_YUV420P: - { - unsigned char *ptr1, *ptr2; - - n = info->width; - ptr = info->pict.data[0]; - linesize = info->pict.linesize[0]; - for(i = 0; i < info->height; i++) { - get_buffer(f, ptr, n); - ptr += linesize; - } - ptr1 = info->pict.data[1]; - ptr2 = info->pict.data[2]; - n >>= 1; - h = info->height >> 1; - for(i = 0; i < h; i++) { - get_buffer(f, ptr1, n); - get_buffer(f, ptr2, n); - ptr1 += info->pict.linesize[1]; - ptr2 += info->pict.linesize[2]; - } - } - break; - } - return 0; -} - -static int pnm_read(ByteIOContext *f, - int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque) -{ - return pnm_read1(f, alloc_cb, opaque, 0); -} - -static int pgmyuv_read(ByteIOContext *f, - int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque) -{ - return pnm_read1(f, alloc_cb, opaque, 1); -} - -static int pnm_write(ByteIOContext *pb, AVImageInfo *info) -{ - int i, h, h1, c, n, linesize; - char buf[100]; - uint8_t *ptr, *ptr1, *ptr2; - - h = info->height; - h1 = h; - switch(info->pix_fmt) { - case PIX_FMT_MONOWHITE: - c = '4'; - n = (info->width + 7) >> 3; - break; - case PIX_FMT_GRAY8: - c = '5'; - n = info->width; - break; - case PIX_FMT_RGB24: - c = '6'; - n = info->width * 3; - break; - case PIX_FMT_YUV420P: - c = '5'; - n = info->width; - h1 = (h * 3) / 2; - break; - default: - return AVERROR_INVALIDDATA; - } - snprintf(buf, sizeof(buf), - "P%c\n%d %d\n", - c, info->width, h1); - put_buffer(pb, buf, strlen(buf)); - if (info->pix_fmt != PIX_FMT_MONOWHITE) { - snprintf(buf, sizeof(buf), - "%d\n", 255); - put_buffer(pb, buf, strlen(buf)); - } - - ptr = info->pict.data[0]; - linesize = info->pict.linesize[0]; - for(i=0;ipix_fmt == PIX_FMT_YUV420P) { - h >>= 1; - n >>= 1; - ptr1 = info->pict.data[1]; - ptr2 = info->pict.data[2]; - for(i=0;ipict.linesize[1]; - ptr2 += info->pict.linesize[2]; - } - } - put_flush_packet(pb); - return 0; -} - -static int pam_read(ByteIOContext *f, - int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque) -{ - int i, n, linesize, h, w, depth, maxval; - char buf1[32], tuple_type[32]; - unsigned char *ptr; - AVImageInfo info1, *info = &info1; - int ret; - - pnm_get(f, buf1, sizeof(buf1)); - if (strcmp(buf1, "P7") != 0) - return AVERROR_INVALIDDATA; - w = -1; - h = -1; - maxval = -1; - depth = -1; - tuple_type[0] = '\0'; - for(;;) { - pnm_get(f, buf1, sizeof(buf1)); - if (!strcmp(buf1, "WIDTH")) { - pnm_get(f, buf1, sizeof(buf1)); - w = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "HEIGHT")) { - pnm_get(f, buf1, sizeof(buf1)); - h = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "DEPTH")) { - pnm_get(f, buf1, sizeof(buf1)); - depth = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "MAXVAL")) { - pnm_get(f, buf1, sizeof(buf1)); - maxval = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "TUPLETYPE")) { - pnm_get(f, buf1, sizeof(buf1)); - pstrcpy(tuple_type, sizeof(tuple_type), buf1); - } else if (!strcmp(buf1, "ENDHDR")) { - break; - } else { - return AVERROR_INVALIDDATA; - } - } - /* check that all tags are present */ - if (w <= 0 || h <= 0 || maxval <= 0 || depth <= 0 || tuple_type[0] == '\0') - return AVERROR_INVALIDDATA; - info->width = w; - info->height = h; - if (depth == 1) { - if (maxval == 1) - info->pix_fmt = PIX_FMT_MONOWHITE; - else - info->pix_fmt = PIX_FMT_GRAY8; - } else if (depth == 3) { - info->pix_fmt = PIX_FMT_RGB24; - } else if (depth == 4) { - info->pix_fmt = PIX_FMT_RGBA32; - } else { - return AVERROR_INVALIDDATA; - } - ret = alloc_cb(opaque, info); - if (ret) - return ret; - - switch(info->pix_fmt) { - default: - return AVERROR_INVALIDDATA; - case PIX_FMT_RGB24: - n = info->width * 3; - goto do_read; - case PIX_FMT_GRAY8: - n = info->width; - goto do_read; - case PIX_FMT_MONOWHITE: - n = (info->width + 7) >> 3; - do_read: - ptr = info->pict.data[0]; - linesize = info->pict.linesize[0]; - for(i = 0; i < info->height; i++) { - get_buffer(f, ptr, n); - ptr += linesize; - } - break; - case PIX_FMT_RGBA32: - ptr = info->pict.data[0]; - linesize = info->pict.linesize[0]; - for(i = 0; i < info->height; i++) { - int j, r, g, b, a; - - for(j = 0;j < w; j++) { - r = get_byte(f); - g = get_byte(f); - b = get_byte(f); - a = get_byte(f); - ((uint32_t *)ptr)[j] = (a << 24) | (r << 16) | (g << 8) | b; - } - ptr += linesize; - } - break; - } - return 0; -} - -static int pam_write(ByteIOContext *pb, AVImageInfo *info) -{ - int i, h, w, n, linesize, depth, maxval; - const char *tuple_type; - char buf[100]; - uint8_t *ptr; - - h = info->height; - w = info->width; - switch(info->pix_fmt) { - case PIX_FMT_MONOWHITE: - n = (info->width + 7) >> 3; - depth = 1; - maxval = 1; - tuple_type = "BLACKANDWHITE"; - break; - case PIX_FMT_GRAY8: - n = info->width; - depth = 1; - maxval = 255; - tuple_type = "GRAYSCALE"; - break; - case PIX_FMT_RGB24: - n = info->width * 3; - depth = 3; - maxval = 255; - tuple_type = "RGB"; - break; - case PIX_FMT_RGBA32: - n = info->width * 4; - depth = 4; - maxval = 255; - tuple_type = "RGB_ALPHA"; - break; - default: - return AVERROR_INVALIDDATA; - } - snprintf(buf, sizeof(buf), - "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLETYPE %s\nENDHDR\n", - w, h, depth, maxval, tuple_type); - put_buffer(pb, buf, strlen(buf)); - - ptr = info->pict.data[0]; - linesize = info->pict.linesize[0]; - - if (info->pix_fmt == PIX_FMT_RGBA32) { - int j; - unsigned int v; - - for(i=0;i> 16) & 0xff); - put_byte(pb, (v >> 8) & 0xff); - put_byte(pb, (v) & 0xff); - put_byte(pb, (v >> 24) & 0xff); - } - ptr += linesize; - } - } else { - for(i=0;ibuf; - if (pd->buf_size >= 8 && - p[0] == 'P' && - p[1] >= '4' && p[1] <= '6' && - pnm_space(p[2]) ) - return AVPROBE_SCORE_MAX - 1; /* to permit pgmyuv probe */ - else - return 0; -} - -static int pgmyuv_probe(AVProbeData *pd) -{ - if (match_ext(pd->filename, "pgmyuv")) - return AVPROBE_SCORE_MAX; - else - return 0; -} - -static int pam_probe(AVProbeData *pd) -{ - const char *p = pd->buf; - if (pd->buf_size >= 8 && - p[0] == 'P' && - p[1] == '7' && - p[2] == '\n') - return AVPROBE_SCORE_MAX; - else - return 0; -} - -AVImageFormat pnm_image_format = { - "pnm", - NULL, - pnm_probe, - pnm_read, - 0, - NULL, -}; - -AVImageFormat pbm_image_format = { - "pbm", - "pbm", - NULL, - NULL, - (1 << PIX_FMT_MONOWHITE), - pnm_write, -}; - -AVImageFormat pgm_image_format = { - "pgm", - "pgm", - NULL, - NULL, - (1 << PIX_FMT_GRAY8), - pnm_write, -}; - -AVImageFormat ppm_image_format = { - "ppm", - "ppm", - NULL, - NULL, - (1 << PIX_FMT_RGB24), - pnm_write, -}; - -AVImageFormat pam_image_format = { - "pam", - "pam", - pam_probe, - pam_read, - (1 << PIX_FMT_MONOWHITE) | (1 << PIX_FMT_GRAY8) | (1 << PIX_FMT_RGB24) | - (1 << PIX_FMT_RGBA32), - pam_write, -}; - -AVImageFormat pgmyuv_image_format = { - "pgmyuv", - "pgmyuv", - pgmyuv_probe, - pgmyuv_read, - (1 << PIX_FMT_YUV420P), - pnm_write, -}; -- 2.7.4