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-rw-r--r--libavcodec/interplayvideo.c125
-rw-r--r--libavformat/ipmovie.c15
2 files changed, 126 insertions, 14 deletions
diff --git a/libavcodec/interplayvideo.c b/libavcodec/interplayvideo.c
index 5dfb0d6bff..431eeb12c7 100644
--- a/libavcodec/interplayvideo.c
+++ b/libavcodec/interplayvideo.c
@@ -903,7 +903,81 @@ static int (* const ipvideo_decode_block16[])(IpvideoContext *s, AVFrame *frame)
ipvideo_decode_block_opcode_0xE_16, ipvideo_decode_block_opcode_0x1,
};
-static void ipvideo_decode_opcodes(IpvideoContext *s, AVFrame *frame)
+static void ipvideo_format_06_firstpass(IpvideoContext *s, AVFrame *frame, short opcode)
+{
+ int line;
+
+ if (!opcode) {
+ for (line = 0; line < 8; ++line) {
+ bytestream2_get_buffer(&s->stream_ptr, s->pixel_ptr, 8);
+ s->pixel_ptr += s->stride;
+ }
+ } else {
+ /* Don't try to copy second_last_frame data on the first frames */
+ if (s->avctx->frame_number > 2)
+ copy_from(s, s->second_last_frame, frame, 0, 0);
+ }
+}
+
+static void ipvideo_format_06_secondpass(IpvideoContext *s, AVFrame *frame, short opcode)
+{
+ int off_x, off_y;
+
+ if (opcode < 0) {
+ off_x = ((unsigned short)opcode - 0xC000) % frame->linesize[0];
+ off_y = ((unsigned short)opcode - 0xC000) / frame->linesize[0];
+ copy_from(s, s->last_frame, frame, off_x, off_y);
+ } else if (opcode > 0) {
+ off_x = ((unsigned short)opcode - 0x4000) % frame->linesize[0];
+ off_y = ((unsigned short)opcode - 0x4000) / frame->linesize[0];
+ copy_from(s, frame, frame, off_x, off_y);
+ }
+}
+
+static void (* const ipvideo_format_06_passes[])(IpvideoContext *s, AVFrame *frame, short op) = {
+ ipvideo_format_06_firstpass, ipvideo_format_06_secondpass,
+};
+
+static void ipvideo_decode_format_06_opcodes(IpvideoContext *s, AVFrame *frame)
+{
+ int pass, x, y;
+ short opcode;
+ GetByteContext decoding_map_ptr;
+
+ /* this is PAL8, so make the palette available */
+ memcpy(frame->data[1], s->pal, AVPALETTE_SIZE);
+ s->stride = frame->linesize[0];
+
+ s->line_inc = s->stride - 8;
+ s->upper_motion_limit_offset = (s->avctx->height - 8) * frame->linesize[0]
+ + (s->avctx->width - 8) * (1 + s->is_16bpp);
+
+ bytestream2_init(&decoding_map_ptr, s->decoding_map, s->decoding_map_size);
+
+ for (pass = 0; pass < 2; ++pass) {
+ bytestream2_seek(&decoding_map_ptr, 0, SEEK_SET);
+ for (y = 0; y < s->avctx->height; y += 8) {
+ for (x = 0; x < s->avctx->width; x += 8) {
+ opcode = bytestream2_get_le16(&decoding_map_ptr);
+
+ ff_tlog(s->avctx,
+ " block @ (%3d, %3d): opcode 0x%X, data ptr offset %d\n",
+ x, y, opcode, bytestream2_tell(&s->stream_ptr));
+
+ s->pixel_ptr = frame->data[0] + x + y * frame->linesize[0];
+ ipvideo_format_06_passes[pass](s, frame, opcode);
+ }
+ }
+ }
+
+ if (bytestream2_get_bytes_left(&s->stream_ptr) > 1) {
+ av_log(s->avctx, AV_LOG_DEBUG,
+ "decode finished with %d bytes left over\n",
+ bytestream2_get_bytes_left(&s->stream_ptr));
+ }
+}
+
+static void ipvideo_decode_format_11_opcodes(IpvideoContext *s, AVFrame *frame)
{
int x, y;
unsigned char opcode;
@@ -1007,18 +1081,40 @@ static int ipvideo_decode_frame(AVCodecContext *avctx,
video_data_size = AV_RL16(buf + 2);
s->decoding_map_size = AV_RL16(buf + 4);
- if (frame_format != 0x11)
- av_log(avctx, AV_LOG_ERROR, "Frame type 0x%02X unsupported\n", frame_format);
+ switch(frame_format) {
+ case 0x06:
+ if (s->decoding_map_size) {
+ av_log(avctx, AV_LOG_ERROR, "Decoding map for format 0x06\n");
+ return AVERROR_INVALIDDATA;
+ }
- if (! s->decoding_map_size) {
- av_log(avctx, AV_LOG_ERROR, "Empty decoding map\n");
- return AVERROR_INVALIDDATA;
- }
+ if (s->is_16bpp) {
+ av_log(avctx, AV_LOG_ERROR, "Video format 0x06 does not support 16bpp movies\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* Decoding map for 0x06 frame format is at the top of pixeldata */
+ s->decoding_map_size = ((s->avctx->width / 8) * (s->avctx->height / 8)) * 2;
+ s->decoding_map = buf + 6 + 14; /* 14 bits of op data */
+ video_data_size -= s->decoding_map_size + 14;
+ bytestream2_init(&s->stream_ptr, buf + 6 + s->decoding_map_size + 14, video_data_size);
- bytestream2_init(&s->stream_ptr, buf + 6, video_data_size);
+ break;
- /* decoding map contains 4 bits of information per 8x8 block */
- s->decoding_map = buf + 6 + video_data_size;
+ case 0x11:
+ if (! s->decoding_map_size) {
+ av_log(avctx, AV_LOG_ERROR, "Empty decoding map for format 0x11\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ bytestream2_init(&s->stream_ptr, buf + 6, video_data_size);
+ s->decoding_map = buf + 6 + video_data_size;
+
+ break;
+
+ default:
+ av_log(avctx, AV_LOG_ERROR, "Frame type 0x%02X unsupported\n", frame_format);
+ }
/* ensure we can't overread the packet */
if (buf_size < 6 + s->decoding_map_size + video_data_size) {
@@ -1040,7 +1136,14 @@ static int ipvideo_decode_frame(AVCodecContext *avctx,
}
}
- ipvideo_decode_opcodes(s, frame);
+ switch(frame_format) {
+ case 0x06:
+ ipvideo_decode_format_06_opcodes(s, frame);
+ break;
+ case 0x11:
+ ipvideo_decode_format_11_opcodes(s, frame);
+ break;
+ }
*got_frame = send_buffer;
diff --git a/libavformat/ipmovie.c b/libavformat/ipmovie.c
index a9ffca4872..7f2454b0f0 100644
--- a/libavformat/ipmovie.c
+++ b/libavformat/ipmovie.c
@@ -58,7 +58,7 @@
#define OPCODE_INIT_AUDIO_BUFFERS 0x03
#define OPCODE_START_STOP_AUDIO 0x04
#define OPCODE_INIT_VIDEO_BUFFERS 0x05
-#define OPCODE_UNKNOWN_06 0x06
+#define OPCODE_VIDEO_DATA_06 0x06
#define OPCODE_SEND_BUFFER 0x07
#define OPCODE_AUDIO_FRAME 0x08
#define OPCODE_SILENCE_FRAME 0x09
@@ -444,7 +444,6 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
s->video_width, s->video_height);
break;
- case OPCODE_UNKNOWN_06:
case OPCODE_UNKNOWN_0E:
case OPCODE_UNKNOWN_10:
case OPCODE_UNKNOWN_12:
@@ -537,8 +536,18 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
avio_skip(pb, opcode_size);
break;
+ case OPCODE_VIDEO_DATA_06:
+ av_log(s->avf, AV_LOG_TRACE, "set video data format 0x06\n");
+ s->frame_format = 0x06;
+
+ /* log position and move on for now */
+ s->video_chunk_offset = avio_tell(pb);
+ s->video_chunk_size = opcode_size;
+ avio_skip(pb, opcode_size);
+ break;
+
case OPCODE_VIDEO_DATA_11:
- av_log(s->avf, AV_LOG_TRACE, "set video data\n");
+ av_log(s->avf, AV_LOG_TRACE, "set video data format 0x11\n");
s->frame_format = 0x11;
/* log position and move on for now */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-23 05:16:36 +0000