39 #define CHUNK_PREAMBLE_SIZE 4
40 #define OPCODE_PREAMBLE_SIZE 4
42 #define CHUNK_INIT_AUDIO 0x0000
43 #define CHUNK_AUDIO_ONLY 0x0001
44 #define CHUNK_INIT_VIDEO 0x0002
45 #define CHUNK_VIDEO 0x0003
46 #define CHUNK_SHUTDOWN 0x0004
47 #define CHUNK_END 0x0005
49 #define CHUNK_DONE 0xFFFC
50 #define CHUNK_NOMEM 0xFFFD
51 #define CHUNK_EOF 0xFFFE
52 #define CHUNK_BAD 0xFFFF
54 #define OPCODE_END_OF_STREAM 0x00
55 #define OPCODE_END_OF_CHUNK 0x01
56 #define OPCODE_CREATE_TIMER 0x02
57 #define OPCODE_INIT_AUDIO_BUFFERS 0x03
58 #define OPCODE_START_STOP_AUDIO 0x04
59 #define OPCODE_INIT_VIDEO_BUFFERS 0x05
60 #define OPCODE_UNKNOWN_06 0x06
61 #define OPCODE_SEND_BUFFER 0x07
62 #define OPCODE_AUDIO_FRAME 0x08
63 #define OPCODE_SILENCE_FRAME 0x09
64 #define OPCODE_INIT_VIDEO_MODE 0x0A
65 #define OPCODE_CREATE_GRADIENT 0x0B
66 #define OPCODE_SET_PALETTE 0x0C
67 #define OPCODE_SET_PALETTE_COMPRESSED 0x0D
68 #define OPCODE_UNKNOWN_0E 0x0E
69 #define OPCODE_SET_DECODING_MAP 0x0F
70 #define OPCODE_UNKNOWN_10 0x10
71 #define OPCODE_VIDEO_DATA 0x11
72 #define OPCODE_UNKNOWN_12 0x12
73 #define OPCODE_UNKNOWN_13 0x13
74 #define OPCODE_UNKNOWN_14 0x14
75 #define OPCODE_UNKNOWN_15 0x15
77 #define PALETTE_COUNT 256
122 "audio codec is known\n");
149 av_dlog(
NULL,
"sending audio frame with pts %"PRId64
" (%d audio frames)\n",
198 av_dlog(
NULL,
"sending video frame with pts %"PRId64
"\n", pkt->
pts);
223 unsigned char opcode_type;
224 unsigned char opcode_version;
226 unsigned char scratch[1024];
228 int first_color, last_color;
230 unsigned char r,
g,
b;
244 chunk_size =
AV_RL16(&chunk_preamble[0]);
245 chunk_type =
AV_RL16(&chunk_preamble[2]);
247 av_dlog(
NULL,
"chunk type 0x%04X, 0x%04X bytes: ", chunk_type, chunk_size);
249 switch (chunk_type) {
282 while ((chunk_size > 0) && (chunk_type !=
CHUNK_BAD)) {
295 opcode_size =
AV_RL16(&opcode_preamble[0]);
296 opcode_type = opcode_preamble[2];
297 opcode_version = opcode_preamble[3];
300 chunk_size -= opcode_size;
301 if (chunk_size < 0) {
302 av_dlog(
NULL,
"chunk_size countdown just went negative\n");
307 av_dlog(
NULL,
" opcode type %02X, version %d, 0x%04X bytes: ",
308 opcode_type, opcode_version, opcode_size);
309 switch (opcode_type) {
323 if ((opcode_version > 0) || (opcode_size > 6)) {
328 if (
avio_read(pb, scratch, opcode_size) !=
334 av_dlog(
NULL,
" %.2f frames/second (timer div = %d, subdiv = %d)\n",
341 if ((opcode_version > 1) || (opcode_size > 10)) {
346 if (
avio_read(pb, scratch, opcode_size) !=
352 audio_flags =
AV_RL16(&scratch[2]);
356 s->
audio_bits = (((audio_flags >> 1) & 1) + 1) * 8;
358 if ((opcode_version == 1) && (audio_flags & 0x4))
364 av_dlog(
NULL,
"audio: %d bits, %d Hz, %s, %s format\n",
368 "Interplay audio" :
"PCM");
378 if ((opcode_version > 2) || (opcode_size > 8)) {
383 if (
avio_read(pb, scratch, opcode_size) !=
388 width =
AV_RL16(&scratch[0]) * 8;
389 height =
AV_RL16(&scratch[2]) * 8;
398 if (opcode_version < 2 || !
AV_RL16(&scratch[6])) {
414 av_dlog(
NULL,
"unknown (but documented) opcode %02X\n", opcode_type);
451 if (opcode_size > 0x304) {
452 av_dlog(
NULL,
"demux_ipmovie: set_palette opcode too large\n");
456 if (
avio_read(pb, scratch, opcode_size) != opcode_size) {
462 first_color =
AV_RL16(&scratch[0]);
463 last_color = first_color +
AV_RL16(&scratch[2]) - 1;
465 if ((first_color > 0xFF) || (last_color > 0xFF)) {
466 av_dlog(
NULL,
"demux_ipmovie: set_palette indexes out of range (%d -> %d)\n",
467 first_color, last_color);
472 for (i = first_color; i <= last_color; i++) {
475 r = scratch[j++] * 4;
476 g = scratch[j++] * 4;
477 b = scratch[j++] * 4;
478 s->
palette[i] = (r << 16) | (g << 8) | (
b);
524 static const char signature[] =
"Interplay MVE File\x1A\0\x1A";
547 uint8_t signature_buffer[
sizeof(
signature)];
549 avio_read(pb, signature_buffer,
sizeof(signature_buffer));
551 memmove(signature_buffer, signature_buffer + 1,
sizeof(signature_buffer) - 1);
552 signature_buffer[
sizeof(signature_buffer) - 1] =
avio_r8(pb);
573 chunk_type =
AV_RL16(&chunk_preamble[2]);