diff options
Diffstat (limited to 'libmpcodecs/native/qtrpza.c')
-rw-r--r-- | libmpcodecs/native/qtrpza.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/libmpcodecs/native/qtrpza.c b/libmpcodecs/native/qtrpza.c deleted file mode 100644 index 6f0db5f921..0000000000 --- a/libmpcodecs/native/qtrpza.c +++ /dev/null @@ -1,262 +0,0 @@ -/* - * - * Apple Video (rpza) QuickTime Decoder for Mplayer - * (c) 2002 Roberto Togni - * - * Fourcc: rpza, azpr - * - * Some code comes from qtsmc.c by Mike Melanson - * - * A description of the decoding algorithm can be found here: - * http://www.pcisys.net/~melanson/codecs/ - */ - -#include "config.h" -#include "bswap.h" -#include "mp_msg.h" - -#define BE_16(x) (be2me_16(*(unsigned short *)(x))) -#define BE_32(x) (be2me_32(*(unsigned int *)(x))) - - -#define ADVANCE_BLOCK() \ -{ \ - pixel_ptr += block_x_inc; \ - if (pixel_ptr >= (width * bytes_per_pixel)) \ - { \ - pixel_ptr = 0; \ - row_ptr += block_y_inc * 4; \ - } \ - total_blocks--; \ - if (total_blocks < 0) \ - { \ - mp_msg(MSGT_DECVIDEO, MSGL_WARN, "block counter just went negative (this should not happen)\n"); \ - return; \ - } \ -} - -#define PAINT_CURRENT_PIXEL(r, g, b, color) \ -{ \ - if (bytes_per_pixel == 2) { \ - (*(unsigned short*)(&decoded[block_ptr])) = color & 0x7fff; \ - block_ptr += 2; \ - } else { \ - decoded[block_ptr++] = (b); \ - decoded[block_ptr++] = (g); \ - decoded[block_ptr++] = (r); \ - if (bytes_per_pixel == 4) /* 32bpp */ \ - block_ptr++; \ - } \ -} - -#define COLOR_FIX(col_out, col_in) (col_out) = ((col_in) << 3) | ((col_in) >> 2) - -#define COLOR_TO_RGB(r, g, b, color) \ -{ \ - if (bytes_per_pixel != 2) { \ - unsigned short tmp; \ - tmp = (color >> 10) & 0x1f; \ - COLOR_FIX (r, tmp); \ - tmp = (color >> 5) & 0x1f; \ - COLOR_FIX (g, tmp); \ - tmp = color & 0x1f; \ - COLOR_FIX (b, tmp); \ - } \ -} - -#define COLORAB_TO_RGB4(rgb4, color4, colorA, colorB) \ -{ \ - unsigned short ta, tb, tt; \ - if (bytes_per_pixel != 2) { \ - ta = (colorA >> 10) & 0x1f; \ - tb = (colorB >> 10) & 0x1f; \ - COLOR_FIX (rgb4[3][0], ta); \ - COLOR_FIX (rgb4[0][0], tb); \ - tt = (11 * ta + 21 * tb) >> 5; \ - COLOR_FIX (rgb4[1][0], tt); \ - tt = (21 * ta + 11 * tb) >> 5; \ - COLOR_FIX (rgb4[2][0], tt); \ - ta = (colorA >> 5) & 0x1f; \ - tb = (colorB >> 5) & 0x1f; \ - COLOR_FIX (rgb4[3][1], ta); \ - COLOR_FIX (rgb4[0][1], tb); \ - tt = (11 * ta + 21 * tb) >> 5; \ - COLOR_FIX (rgb4[1][1], tt); \ - tt = (21 * ta + 11 * tb) >> 5; \ - COLOR_FIX (rgb4[2][1], tt); \ - ta = colorA & 0x1f; \ - tb = colorB & 0x1f; \ - COLOR_FIX (rgb4[3][2], ta); \ - COLOR_FIX (rgb4[0][2], tb); \ - tt = (11 * ta + 21 * tb) >> 5; \ - COLOR_FIX (rgb4[1][2], tt); \ - tt = (21 * ta + 11 * tb) >> 5; \ - COLOR_FIX (rgb4[2][2], tt); \ - } else { \ - color4[3] = colorA; \ - color4[0] = colorB; \ - ta = (colorA >> 10) & 0x1f; \ - tb = (colorB >> 10) & 0x1f; \ - color4[1] = ((11 * ta + 21 * tb) << 5) & 0x7c00; \ - color4[2] = ((21 * ta + 11 * tb) << 5) & 0x7c00; \ - ta = (colorA >> 5) & 0x1f; \ - tb = (colorB >> 5) & 0x1f; \ - color4[1] |= (11 * ta + 21 * tb) & 0x3e0; \ - color4[2] |= (21 * ta + 11 * tb) & 0x3e0; \ - ta = colorA & 0x1f; \ - tb = colorB & 0x1f; \ - color4[1] |= (11 * ta + 21 * tb) >> 5; \ - color4[2] |= (21 * ta + 11 * tb) >> 5; \ - } \ -} - - - -/* - * rpza frame decoder - * - * Input values: - * - * *encoded: buffer of encoded data (chunk) - * encoded_size: length of encoded buffer - * *decoded: buffer where decoded data is written (image buffer) - * width: width of decoded frame in pixels - * height: height of decoded frame in pixels - * bytes_per_pixel: bytes/pixel in output image (color depth) - * - */ - -void qt_decode_rpza(char *encoded, int encoded_size, char *decoded, int width, - int height, int bytes_per_pixel) -{ - - int stream_ptr = 0; - int chunk_size; - unsigned char opcode; - int n_blocks; - unsigned short colorA, colorB; - unsigned char r, g, b; - unsigned char rgb4[4][3]; - unsigned short color4[4]; - unsigned char index, idx; - - int row_ptr = 0; - int pixel_ptr = 0; - int pixel_x, pixel_y; - int row_inc = bytes_per_pixel * (width - 4); - int block_x_inc = bytes_per_pixel * 4; - int block_y_inc = bytes_per_pixel * width; - int block_ptr; - int total_blocks; - - - /* First byte is always 0xe1. Warn if it's different */ - if ((unsigned char)encoded[stream_ptr] != 0xe1) - mp_msg(MSGT_DECVIDEO, MSGL_WARN, - "First chunk byte is 0x%02x instead of 0x1e\n", - (unsigned char)encoded[stream_ptr]); - - /* Get chunk size, ingnoring first byte */ - chunk_size = BE_32(&encoded[stream_ptr]) & 0x00FFFFFF; - stream_ptr += 4; - - /* If length mismatch use size from MOV file and try to decode anyway */ - if (chunk_size != encoded_size) - mp_msg(MSGT_DECVIDEO, MSGL_WARN, "MOV chunk size != encoded chunk size; using MOV chunk size\n"); - - chunk_size = encoded_size; - - /* Number of 4x4 blocks in frame. */ - total_blocks = (width * height) / (4 * 4); - - /* Process chunk data */ - while (stream_ptr < chunk_size) { - opcode = encoded[stream_ptr++]; /* Get opcode */ - - n_blocks = (opcode & 0x1f) +1; /* Extract block counter from opcode */ - - /* If opcode MSbit is 0, we need more data to decide what to do */ - if ((opcode & 0x80) == 0) { - colorA = (opcode << 8) | ((unsigned char)encoded[stream_ptr++]); - opcode = 0; - if ((encoded[stream_ptr] & 0x80) != 0) { - /* Must behave as opcode 110xxxxx, using colorA computed above.*/ - /* Use fake opcode 0x20 to enter switch block at the right place */ - opcode = 0x20; - n_blocks = 1; - } - } - switch (opcode & 0xe0) { - /* Skip blocks */ - case 0x80: - while (n_blocks--) - ADVANCE_BLOCK(); - break; - - /* Fill blocks with one color */ - case 0xa0: - colorA = BE_16 (&encoded[stream_ptr]); - stream_ptr += 2; - COLOR_TO_RGB (r, g, b, colorA); - while (n_blocks--) { - block_ptr = row_ptr + pixel_ptr; - for (pixel_y = 0; pixel_y < 4; pixel_y++) { - for (pixel_x = 0; pixel_x < 4; pixel_x++){ - PAINT_CURRENT_PIXEL(r, g, b, colorA); - } - block_ptr += row_inc; - } - ADVANCE_BLOCK(); - } - break; - - /* Fill blocks with 4 colors */ - case 0xc0: - colorA = BE_16 (&encoded[stream_ptr]); - stream_ptr += 2; - case 0x20: - colorB = BE_16 (&encoded[stream_ptr]); - stream_ptr += 2; - COLORAB_TO_RGB4 (rgb4, color4, colorA, colorB); - while (n_blocks--) { - block_ptr = row_ptr + pixel_ptr; - for (pixel_y = 0; pixel_y < 4; pixel_y++) { - index = encoded[stream_ptr++]; - for (pixel_x = 0; pixel_x < 4; pixel_x++){ - idx = (index >> (2 * (3 - pixel_x))) & 0x03; - PAINT_CURRENT_PIXEL(rgb4[idx][0], rgb4[idx][1], rgb4[idx][2], color4[idx]); - } - block_ptr += row_inc; - } - ADVANCE_BLOCK(); - } - break; - - /* Fill block with 16 colors */ - case 0x00: - block_ptr = row_ptr + pixel_ptr; - for (pixel_y = 0; pixel_y < 4; pixel_y++) { - for (pixel_x = 0; pixel_x < 4; pixel_x++){ - /* We already have color of upper left pixel */ - if ((pixel_y != 0) || (pixel_x !=0)) { - colorA = BE_16 (&encoded[stream_ptr]); - stream_ptr += 2; - } - COLOR_TO_RGB (r, g, b, colorA); - PAINT_CURRENT_PIXEL(r, g, b, colorA); - } - block_ptr += row_inc; - } - ADVANCE_BLOCK(); - break; - - /* Unknown opcode */ - default: - mp_msg(MSGT_DECVIDEO, MSGL_HINT, "Unknown opcode %d in rpza chunk." - " Skip remaining %lu bytes of chunk data.\n", opcode, - chunk_size - stream_ptr); - return; - } /* Opcode switch */ - - } -} |