#include <inttypes.h>
#include "libavutil/imgutils.h"
+#include "libavutil/thread.h"
#include "avcodec.h"
#include "error_resilience.h"
#define RV_GET_MINOR_VER(x) (((x) >> 20) & 0xFF)
#define RV_GET_MICRO_VER(x) (((x) >> 12) & 0xFF)
-#define DC_VLC_BITS 14 // FIXME find a better solution
+#define MAX_VLC_ENTRIES 1023 // Note: Does not include the skip entries.
+#define DC_VLC_BITS 9
typedef struct RVDecContext {
MpegEncContext m;
int orig_width, orig_height;
} RVDecContext;
-static const uint16_t rv_lum_code[256] = {
- 0x3e7f, 0x0f00, 0x0f01, 0x0f02, 0x0f03, 0x0f04, 0x0f05, 0x0f06,
- 0x0f07, 0x0f08, 0x0f09, 0x0f0a, 0x0f0b, 0x0f0c, 0x0f0d, 0x0f0e,
- 0x0f0f, 0x0f10, 0x0f11, 0x0f12, 0x0f13, 0x0f14, 0x0f15, 0x0f16,
- 0x0f17, 0x0f18, 0x0f19, 0x0f1a, 0x0f1b, 0x0f1c, 0x0f1d, 0x0f1e,
- 0x0f1f, 0x0f20, 0x0f21, 0x0f22, 0x0f23, 0x0f24, 0x0f25, 0x0f26,
- 0x0f27, 0x0f28, 0x0f29, 0x0f2a, 0x0f2b, 0x0f2c, 0x0f2d, 0x0f2e,
- 0x0f2f, 0x0f30, 0x0f31, 0x0f32, 0x0f33, 0x0f34, 0x0f35, 0x0f36,
- 0x0f37, 0x0f38, 0x0f39, 0x0f3a, 0x0f3b, 0x0f3c, 0x0f3d, 0x0f3e,
- 0x0f3f, 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0386,
- 0x0387, 0x0388, 0x0389, 0x038a, 0x038b, 0x038c, 0x038d, 0x038e,
- 0x038f, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396,
- 0x0397, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, 0x039e,
- 0x039f, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6,
- 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce,
- 0x00cf, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056,
- 0x0057, 0x0020, 0x0021, 0x0022, 0x0023, 0x000c, 0x000d, 0x0004,
- 0x0000, 0x0005, 0x000e, 0x000f, 0x0024, 0x0025, 0x0026, 0x0027,
- 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
- 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
- 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
- 0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a6, 0x03a7,
- 0x03a8, 0x03a9, 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03ae, 0x03af,
- 0x03b0, 0x03b1, 0x03b2, 0x03b3, 0x03b4, 0x03b5, 0x03b6, 0x03b7,
- 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03be, 0x03bf,
- 0x0f40, 0x0f41, 0x0f42, 0x0f43, 0x0f44, 0x0f45, 0x0f46, 0x0f47,
- 0x0f48, 0x0f49, 0x0f4a, 0x0f4b, 0x0f4c, 0x0f4d, 0x0f4e, 0x0f4f,
- 0x0f50, 0x0f51, 0x0f52, 0x0f53, 0x0f54, 0x0f55, 0x0f56, 0x0f57,
- 0x0f58, 0x0f59, 0x0f5a, 0x0f5b, 0x0f5c, 0x0f5d, 0x0f5e, 0x0f5f,
- 0x0f60, 0x0f61, 0x0f62, 0x0f63, 0x0f64, 0x0f65, 0x0f66, 0x0f67,
- 0x0f68, 0x0f69, 0x0f6a, 0x0f6b, 0x0f6c, 0x0f6d, 0x0f6e, 0x0f6f,
- 0x0f70, 0x0f71, 0x0f72, 0x0f73, 0x0f74, 0x0f75, 0x0f76, 0x0f77,
- 0x0f78, 0x0f79, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f7e, 0x0f7f,
+/* (run, length) encoded value for the symbols table. The actual symbols
+ * are run..run - length (mod 256).
+ * The last two entries in the following table apply to luma only.
+ * The skip values are not included in this list. */
+static const uint8_t rv_sym_run_len[][2] = {
+ { 0, 0 }, { 1, 0 }, { 255, 0 }, { 3, 1 }, { 254, 1 },
+ { 7, 3 }, { 252, 3 }, { 15, 7 }, { 248, 7 }, { 31, 15 },
+ { 240, 15 }, { 63, 31 }, { 224, 31 }, { 127, 63 }, { 192, 63 },
+ { 255, 127 }, { 128, 127 }, { 127, 255 }, { 128, 255 },
};
-static const uint8_t rv_lum_bits[256] = {
- 14, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 10, 10, 10, 10, 10, 10, 10,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 10, 8, 8, 8, 8, 8, 8, 8,
- 8, 8, 8, 8, 8, 8, 8, 8,
- 8, 7, 7, 7, 7, 7, 7, 7,
- 7, 6, 6, 6, 6, 5, 5, 4,
- 2, 4, 5, 5, 6, 6, 6, 6,
- 7, 7, 7, 7, 7, 7, 7, 7,
- 8, 8, 8, 8, 8, 8, 8, 8,
- 8, 8, 8, 8, 8, 8, 8, 8,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
+/* entry[i] of the following tables gives
+ * the number of VLC codes of length i + 2. */
+static const uint16_t rv_lum_len_count[15] = {
+ 1, 0, 2, 4, 8, 16, 32, 0, 64, 0, 128, 0, 256, 0, 512,
};
-static const uint16_t rv_chrom_code[256] = {
- 0xfe7f, 0x3f00, 0x3f01, 0x3f02, 0x3f03, 0x3f04, 0x3f05, 0x3f06,
- 0x3f07, 0x3f08, 0x3f09, 0x3f0a, 0x3f0b, 0x3f0c, 0x3f0d, 0x3f0e,
- 0x3f0f, 0x3f10, 0x3f11, 0x3f12, 0x3f13, 0x3f14, 0x3f15, 0x3f16,
- 0x3f17, 0x3f18, 0x3f19, 0x3f1a, 0x3f1b, 0x3f1c, 0x3f1d, 0x3f1e,
- 0x3f1f, 0x3f20, 0x3f21, 0x3f22, 0x3f23, 0x3f24, 0x3f25, 0x3f26,
- 0x3f27, 0x3f28, 0x3f29, 0x3f2a, 0x3f2b, 0x3f2c, 0x3f2d, 0x3f2e,
- 0x3f2f, 0x3f30, 0x3f31, 0x3f32, 0x3f33, 0x3f34, 0x3f35, 0x3f36,
- 0x3f37, 0x3f38, 0x3f39, 0x3f3a, 0x3f3b, 0x3f3c, 0x3f3d, 0x3f3e,
- 0x3f3f, 0x0f80, 0x0f81, 0x0f82, 0x0f83, 0x0f84, 0x0f85, 0x0f86,
- 0x0f87, 0x0f88, 0x0f89, 0x0f8a, 0x0f8b, 0x0f8c, 0x0f8d, 0x0f8e,
- 0x0f8f, 0x0f90, 0x0f91, 0x0f92, 0x0f93, 0x0f94, 0x0f95, 0x0f96,
- 0x0f97, 0x0f98, 0x0f99, 0x0f9a, 0x0f9b, 0x0f9c, 0x0f9d, 0x0f9e,
- 0x0f9f, 0x03c0, 0x03c1, 0x03c2, 0x03c3, 0x03c4, 0x03c5, 0x03c6,
- 0x03c7, 0x03c8, 0x03c9, 0x03ca, 0x03cb, 0x03cc, 0x03cd, 0x03ce,
- 0x03cf, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6,
- 0x00e7, 0x0030, 0x0031, 0x0032, 0x0033, 0x0008, 0x0009, 0x0002,
- 0x0000, 0x0003, 0x000a, 0x000b, 0x0034, 0x0035, 0x0036, 0x0037,
- 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
- 0x03d0, 0x03d1, 0x03d2, 0x03d3, 0x03d4, 0x03d5, 0x03d6, 0x03d7,
- 0x03d8, 0x03d9, 0x03da, 0x03db, 0x03dc, 0x03dd, 0x03de, 0x03df,
- 0x0fa0, 0x0fa1, 0x0fa2, 0x0fa3, 0x0fa4, 0x0fa5, 0x0fa6, 0x0fa7,
- 0x0fa8, 0x0fa9, 0x0faa, 0x0fab, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
- 0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
- 0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
- 0x3f40, 0x3f41, 0x3f42, 0x3f43, 0x3f44, 0x3f45, 0x3f46, 0x3f47,
- 0x3f48, 0x3f49, 0x3f4a, 0x3f4b, 0x3f4c, 0x3f4d, 0x3f4e, 0x3f4f,
- 0x3f50, 0x3f51, 0x3f52, 0x3f53, 0x3f54, 0x3f55, 0x3f56, 0x3f57,
- 0x3f58, 0x3f59, 0x3f5a, 0x3f5b, 0x3f5c, 0x3f5d, 0x3f5e, 0x3f5f,
- 0x3f60, 0x3f61, 0x3f62, 0x3f63, 0x3f64, 0x3f65, 0x3f66, 0x3f67,
- 0x3f68, 0x3f69, 0x3f6a, 0x3f6b, 0x3f6c, 0x3f6d, 0x3f6e, 0x3f6f,
- 0x3f70, 0x3f71, 0x3f72, 0x3f73, 0x3f74, 0x3f75, 0x3f76, 0x3f77,
- 0x3f78, 0x3f79, 0x3f7a, 0x3f7b, 0x3f7c, 0x3f7d, 0x3f7e, 0x3f7f,
-};
-
-static const uint8_t rv_chrom_bits[256] = {
- 16, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 10, 10, 10, 10, 10, 10, 10,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 10, 8, 8, 8, 8, 8, 8, 8,
- 8, 6, 6, 6, 6, 4, 4, 3,
- 2, 3, 4, 4, 6, 6, 6, 6,
- 8, 8, 8, 8, 8, 8, 8, 8,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 10, 10, 10, 10, 10, 10, 10, 10,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 12,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14,
+static const uint16_t rv_chrom_len_count[15] = {
+ 1, 2, 4, 0, 8, 0, 16, 0, 32, 0, 64, 0, 128, 0, 256,
};
static VLC rv_dc_lum, rv_dc_chrom;
if (n < 4) {
code = get_vlc2(&s->gb, rv_dc_lum.table, DC_VLC_BITS, 2);
- if (code < 0) {
- /* XXX: I don't understand why they use LONGER codes than
- * necessary. The following code would be completely useless
- * if they had thought about it !!! */
- code = get_bits(&s->gb, 7);
- if (code == 0x7c) {
- code = (int8_t) (get_bits(&s->gb, 7) + 1);
- } else if (code == 0x7d) {
- code = -128 + get_bits(&s->gb, 7);
- } else if (code == 0x7e) {
- if (get_bits1(&s->gb) == 0)
- code = (int8_t) (get_bits(&s->gb, 8) + 1);
- else
- code = (int8_t) (get_bits(&s->gb, 8));
- } else if (code == 0x7f) {
- skip_bits(&s->gb, 11);
- code = 1;
- }
- } else {
- code -= 128;
- }
} else {
code = get_vlc2(&s->gb, rv_dc_chrom.table, DC_VLC_BITS, 2);
- /* same remark */
if (code < 0) {
- code = get_bits(&s->gb, 9);
- if (code == 0x1fc) {
- code = (int8_t) (get_bits(&s->gb, 7) + 1);
- } else if (code == 0x1fd) {
- code = -128 + get_bits(&s->gb, 7);
- } else if (code == 0x1fe) {
- skip_bits(&s->gb, 9);
- code = 1;
- } else {
- av_log(s->avctx, AV_LOG_ERROR, "chroma dc error\n");
- return 0xffff;
- }
- } else {
- code -= 128;
+ av_log(s->avctx, AV_LOG_ERROR, "chroma dc error\n");
+ return -1;
}
}
- return -code;
+ return code;
}
/* read RV 1.0 compatible frame header */
return mb_count;
}
-static int rv20_decode_picture_header(RVDecContext *rv)
+static int rv20_decode_picture_header(RVDecContext *rv, int whole_size)
{
MpegEncContext *s = &rv->m;
int seq, mb_pos, i, ret;
new_w = rv->orig_width;
new_h = rv->orig_height;
}
- if (new_w != s->width || new_h != s->height) {
+ if (new_w != s->width || new_h != s->height || !s->context_initialized) {
AVRational old_aspect = s->avctx->sample_aspect_ratio;
av_log(s->avctx, AV_LOG_DEBUG,
"attempting to change resolution to %dx%d\n", new_w, new_h);
if (av_image_check_size(new_w, new_h, 0, s->avctx) < 0)
return AVERROR_INVALIDDATA;
+
+ if (whole_size < (new_w + 15)/16 * ((new_h + 15)/16) / 8)
+ return AVERROR_INVALIDDATA;
+
ff_mpv_common_end(s);
// attempt to keep aspect during typical resolution switches
if (!old_aspect.num)
old_aspect = (AVRational){1, 1};
- if (2 * new_w * s->height == new_h * s->width)
+ if (2 * (int64_t)new_w * s->height == (int64_t)new_h * s->width)
s->avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){2, 1});
- if (new_w * s->height == 2 * new_h * s->width)
+ if ((int64_t)new_w * s->height == 2 * (int64_t)new_h * s->width)
s->avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){1, 2});
ret = ff_set_dimensions(s->avctx, new_w, new_h);
return s->mb_width * s->mb_height - mb_pos;
}
+static av_cold void rv10_build_vlc(VLC *vlc, const uint16_t len_count[15],
+ const uint8_t sym_rl[][2], int sym_rl_elems)
+{
+ uint16_t syms[MAX_VLC_ENTRIES];
+ uint8_t lens[MAX_VLC_ENTRIES];
+ unsigned nb_syms = 0, nb_lens = 0;
+
+ for (unsigned i = 0; i < sym_rl_elems; i++) {
+ unsigned cur_sym = sym_rl[i][0];
+ for (unsigned tmp = nb_syms + sym_rl[i][1]; nb_syms <= tmp; nb_syms++)
+ syms[nb_syms] = 0xFF & cur_sym--;
+ }
+
+ for (unsigned i = 0; i < 15; i++)
+ for (unsigned tmp = nb_lens + len_count[i]; nb_lens < tmp; nb_lens++)
+ lens[nb_lens] = i + 2;
+ av_assert1(nb_lens == nb_syms);
+ ff_init_vlc_from_lengths(vlc, DC_VLC_BITS, nb_lens, lens, 1,
+ syms, 2, 2, 0, INIT_VLC_STATIC_OVERLONG, NULL);
+}
+
+static av_cold void rv10_init_static(void)
+{
+ static VLC_TYPE table[1472 + 992][2];
+
+ rv_dc_lum.table = table;
+ rv_dc_lum.table_allocated = 1472;
+ rv10_build_vlc(&rv_dc_lum, rv_lum_len_count,
+ rv_sym_run_len, FF_ARRAY_ELEMS(rv_sym_run_len));
+ for (int i = 0; i < 1 << (DC_VLC_BITS - 7 /* Length of skip prefix */); i++) {
+ /* All codes beginning with 0x7F have the same length and value.
+ * Modifying the table directly saves us the useless subtables. */
+ rv_dc_lum.table[(0x7F << (DC_VLC_BITS - 7)) + i][0] = 255;
+ rv_dc_lum.table[(0x7F << (DC_VLC_BITS - 7)) + i][1] = 18;
+ }
+ rv_dc_chrom.table = &table[1472];
+ rv_dc_chrom.table_allocated = 992;
+ rv10_build_vlc(&rv_dc_chrom, rv_chrom_len_count,
+ rv_sym_run_len, FF_ARRAY_ELEMS(rv_sym_run_len) - 2);
+ for (int i = 0; i < 1 << (DC_VLC_BITS - 9 /* Length of skip prefix */); i++) {
+ /* Same as above. */
+ rv_dc_chrom.table[(0x1FE << (DC_VLC_BITS - 9)) + i][0] = 255;
+ rv_dc_chrom.table[(0x1FE << (DC_VLC_BITS - 9)) + i][1] = 18;
+ }
+ ff_h263_decode_init_vlc();
+}
+
static av_cold int rv10_decode_init(AVCodecContext *avctx)
{
+ static AVOnce init_static_once = AV_ONCE_INIT;
RVDecContext *rv = avctx->priv_data;
MpegEncContext *s = &rv->m;
- static int done = 0;
int major_ver, minor_ver, micro_ver, ret;
if (avctx->extradata_size < 8) {
avctx->coded_height, 0, avctx)) < 0)
return ret;
- ff_mpv_decode_defaults(s);
ff_mpv_decode_init(s, avctx);
s->out_format = FMT_H263;
return ret;
ff_h263dsp_init(&s->h263dsp);
- ff_h263_decode_init_vlc();
- /* init rv vlc */
- if (!done) {
- INIT_VLC_STATIC(&rv_dc_lum, DC_VLC_BITS, 256,
- rv_lum_bits, 1, 1,
- rv_lum_code, 2, 2, 16384);
- INIT_VLC_STATIC(&rv_dc_chrom, DC_VLC_BITS, 256,
- rv_chrom_bits, 1, 1,
- rv_chrom_code, 2, 2, 16388);
- done = 1;
- }
+ /* init static VLCs */
+ ff_thread_once(&init_static_once, rv10_init_static);
return 0;
}
}
static int rv10_decode_packet(AVCodecContext *avctx, const uint8_t *buf,
- int buf_size, int buf_size2)
+ int buf_size, int buf_size2, int whole_size)
{
RVDecContext *rv = avctx->priv_data;
MpegEncContext *s = &rv->m;
if (s->codec_id == AV_CODEC_ID_RV10)
mb_count = rv10_decode_picture_header(s);
else
- mb_count = rv20_decode_picture_header(rv);
+ mb_count = rv20_decode_picture_header(rv, whole_size);
if (mb_count < 0) {
if (mb_count != ERROR_SKIP_FRAME)
av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n");
return AVERROR_INVALIDDATA;
}
+ if (whole_size < s->mb_width * s->mb_height / 8)
+ return AVERROR_INVALIDDATA;
+
if ((s->mb_x == 0 && s->mb_y == 0) || !s->current_picture_ptr) {
// FIXME write parser so we always have complete frames?
if (s->current_picture_ptr) {
offset + FFMAX(size, size2) > buf_size)
return AVERROR_INVALIDDATA;
- if ((ret = rv10_decode_packet(avctx, buf + offset, size, size2)) < 0)
+ if ((ret = rv10_decode_packet(avctx, buf + offset, size, size2, buf_size)) < 0)
return ret;
if (ret > 8 * size)
return avpkt->size;
}
-AVCodec ff_rv10_decoder = {
+const AVCodec ff_rv10_decoder = {
.name = "rv10",
.long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
.type = AVMEDIA_TYPE_VIDEO,
},
};
-AVCodec ff_rv20_decoder = {
+const AVCodec ff_rv20_decoder = {
.name = "rv20",
.long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
.type = AVMEDIA_TYPE_VIDEO,
projects / ffmpeg / blobdiff