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-rw-r--r--libmpcodecs/native/qtrpza.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/libmpcodecs/native/qtrpza.c b/libmpcodecs/native/qtrpza.c
new file mode 100644
index 0000000000..024bca5b42
--- /dev/null
+++ b/libmpcodecs/native/qtrpza.c
@@ -0,0 +1,264 @@
+/*
+ *
+ * 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 i;
+ 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 max_height = row_inc * height;
+ 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 */
+
+ }
+}
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