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-rw-r--r--libavcodec/mjpeg.c21
-rw-r--r--libavcodec/mjpeg.h21
-rw-r--r--libavcodec/mjpegdec.c14
-rw-r--r--libavcodec/mjpegenc.c46
4 files changed, 56 insertions, 46 deletions
diff --git a/libavcodec/mjpeg.c b/libavcodec/mjpeg.c
index ab855fc2f0..4be987b2cf 100644
--- a/libavcodec/mjpeg.c
+++ b/libavcodec/mjpeg.c
@@ -62,19 +62,19 @@ const unsigned char std_chrominance_quant_tbl[64] = {
/* Set up the standard Huffman tables (cf. JPEG standard section K.3) */
/* IMPORTANT: these are only valid for 8-bit data precision! */
-const uint8_t bits_dc_luminance[17] =
+const uint8_t ff_mjpeg_bits_dc_luminance[17] =
{ /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 };
-const uint8_t val_dc_luminance[] =
+const uint8_t ff_mjpeg_val_dc_luminance[] =
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
-const uint8_t bits_dc_chrominance[17] =
+const uint8_t ff_mjpeg_bits_dc_chrominance[17] =
{ /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
-const uint8_t val_dc_chrominance[] =
+const uint8_t ff_mjpeg_val_dc_chrominance[] =
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
-const uint8_t bits_ac_luminance[17] =
+const uint8_t ff_mjpeg_bits_ac_luminance[17] =
{ /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d };
-const uint8_t val_ac_luminance[] =
+const uint8_t ff_mjpeg_val_ac_luminance[] =
{ 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
@@ -98,10 +98,10 @@ const uint8_t val_ac_luminance[] =
0xf9, 0xfa
};
-const uint8_t bits_ac_chrominance[17] =
+const uint8_t ff_mjpeg_bits_ac_chrominance[17] =
{ /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 };
-const uint8_t val_ac_chrominance[] =
+const uint8_t ff_mjpeg_val_ac_chrominance[] =
{ 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
@@ -126,8 +126,9 @@ const uint8_t val_ac_chrominance[] =
};
/* isn't this function nicer than the one in the libjpeg ? */
-void build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code,
- const uint8_t *bits_table, const uint8_t *val_table)
+void ff_mjpeg_build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code,
+ const uint8_t *bits_table,
+ const uint8_t *val_table)
{
int i, j, k,nb, code, sym;
diff --git a/libavcodec/mjpeg.h b/libavcodec/mjpeg.h
index 7030b1784c..4009b4a02a 100644
--- a/libavcodec/mjpeg.h
+++ b/libavcodec/mjpeg.h
@@ -204,19 +204,20 @@ typedef struct MJpegDecodeContext {
case 7: ret= (left + top)>>1; break;\
}
-extern const uint8_t bits_dc_luminance[];
-extern const uint8_t val_dc_luminance[];
+extern const uint8_t ff_mjpeg_bits_dc_luminance[];
+extern const uint8_t ff_mjpeg_val_dc_luminance[];
-extern const uint8_t bits_dc_chrominance[];
-extern const uint8_t val_dc_chrominance[];
+extern const uint8_t ff_mjpeg_bits_dc_chrominance[];
+extern const uint8_t ff_mjpeg_val_dc_chrominance[];
-extern const uint8_t bits_ac_luminance[];
-extern const uint8_t val_ac_luminance[];
+extern const uint8_t ff_mjpeg_bits_ac_luminance[];
+extern const uint8_t ff_mjpeg_val_ac_luminance[];
-extern const uint8_t bits_ac_chrominance[];
-extern const uint8_t val_ac_chrominance[];
+extern const uint8_t ff_mjpeg_bits_ac_chrominance[];
+extern const uint8_t ff_mjpeg_val_ac_chrominance[];
-void build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code,
- const uint8_t *bits_table, const uint8_t *val_table);
+void ff_mjpeg_build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code,
+ const uint8_t *bits_table,
+ const uint8_t *val_table);
#endif /* MJPEG_H */
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index b3ced4d5fc..274dae7946 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -51,7 +51,7 @@ static int build_vlc(VLC *vlc, const uint8_t *bits_table, const uint8_t *val_tab
assert(nb_codes <= 256);
memset(huff_size, 0, sizeof(huff_size));
- build_huffman_codes(huff_size, huff_code, bits_table, val_table);
+ ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table);
if(is_ac){
memmove(huff_size+16, huff_size, sizeof(uint8_t)*nb_codes);
@@ -77,10 +77,14 @@ static int mjpeg_decode_init(AVCodecContext *avctx)
s->first_picture = 1;
s->org_height = avctx->coded_height;
- build_vlc(&s->vlcs[0][0], bits_dc_luminance, val_dc_luminance, 12, 0, 0);
- build_vlc(&s->vlcs[0][1], bits_dc_chrominance, val_dc_chrominance, 12, 0, 0);
- build_vlc(&s->vlcs[1][0], bits_ac_luminance, val_ac_luminance, 251, 0, 1);
- build_vlc(&s->vlcs[1][1], bits_ac_chrominance, val_ac_chrominance, 251, 0, 1);
+ build_vlc(&s->vlcs[0][0], ff_mjpeg_bits_dc_luminance,
+ ff_mjpeg_val_dc_luminance, 12, 0, 0);
+ build_vlc(&s->vlcs[0][1], ff_mjpeg_bits_dc_chrominance,
+ ff_mjpeg_val_dc_chrominance, 12, 0, 0);
+ build_vlc(&s->vlcs[1][0], ff_mjpeg_bits_ac_luminance,
+ ff_mjpeg_val_ac_luminance, 251, 0, 1);
+ build_vlc(&s->vlcs[1][1], ff_mjpeg_bits_ac_chrominance,
+ ff_mjpeg_val_ac_chrominance, 251, 0, 1);
if (avctx->flags & CODEC_FLAG_EXTERN_HUFF)
{
diff --git a/libavcodec/mjpegenc.c b/libavcodec/mjpegenc.c
index 11967fe01a..53aae5c287 100644
--- a/libavcodec/mjpegenc.c
+++ b/libavcodec/mjpegenc.c
@@ -67,22 +67,22 @@ int mjpeg_init(MpegEncContext *s)
s->max_qcoeff= 1023;
/* build all the huffman tables */
- build_huffman_codes(m->huff_size_dc_luminance,
- m->huff_code_dc_luminance,
- bits_dc_luminance,
- val_dc_luminance);
- build_huffman_codes(m->huff_size_dc_chrominance,
- m->huff_code_dc_chrominance,
- bits_dc_chrominance,
- val_dc_chrominance);
- build_huffman_codes(m->huff_size_ac_luminance,
- m->huff_code_ac_luminance,
- bits_ac_luminance,
- val_ac_luminance);
- build_huffman_codes(m->huff_size_ac_chrominance,
- m->huff_code_ac_chrominance,
- bits_ac_chrominance,
- val_ac_chrominance);
+ ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
+ m->huff_code_dc_luminance,
+ ff_mjpeg_bits_dc_luminance,
+ ff_mjpeg_val_dc_luminance);
+ ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
+ m->huff_code_dc_chrominance,
+ ff_mjpeg_bits_dc_chrominance,
+ ff_mjpeg_val_dc_chrominance);
+ ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
+ m->huff_code_ac_luminance,
+ ff_mjpeg_bits_ac_luminance,
+ ff_mjpeg_val_ac_luminance);
+ ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
+ m->huff_code_ac_chrominance,
+ ff_mjpeg_bits_ac_chrominance,
+ ff_mjpeg_val_ac_chrominance);
s->mjpeg_ctx = m;
return 0;
@@ -149,11 +149,15 @@ static void jpeg_table_header(MpegEncContext *s)
ptr = pbBufPtr(p);
put_bits(p, 16, 0); /* patched later */
size = 2;
- size += put_huffman_table(s, 0, 0, bits_dc_luminance, val_dc_luminance);
- size += put_huffman_table(s, 0, 1, bits_dc_chrominance, val_dc_chrominance);
-
- size += put_huffman_table(s, 1, 0, bits_ac_luminance, val_ac_luminance);
- size += put_huffman_table(s, 1, 1, bits_ac_chrominance, val_ac_chrominance);
+ size += put_huffman_table(s, 0, 0, ff_mjpeg_bits_dc_luminance,
+ ff_mjpeg_val_dc_luminance);
+ size += put_huffman_table(s, 0, 1, ff_mjpeg_bits_dc_chrominance,
+ ff_mjpeg_val_dc_chrominance);
+
+ size += put_huffman_table(s, 1, 0, ff_mjpeg_bits_ac_luminance,
+ ff_mjpeg_val_ac_luminance);
+ size += put_huffman_table(s, 1, 1, ff_mjpeg_bits_ac_chrominance,
+ ff_mjpeg_val_ac_chrominance);
ptr[0] = size >> 8;
ptr[1] = size;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-09 13:45:30 +0000