/*
* Westwood Studios VQA Video Decoder
- * Copyright (C) 2003 the ffmpeg project
+ * Copyright (C) 2003 The FFmpeg project
*
* This file is part of Libav.
*
typedef struct VqaContext {
AVCodecContext *avctx;
- AVFrame frame;
GetByteContext gb;
uint32_t palette[PALETTE_COUNT];
/* load up the VQA parameters from the header */
s->vqa_version = s->avctx->extradata[0];
+ switch (s->vqa_version) {
+ case 1:
+ case 2:
+ break;
+ case 3:
+ avpriv_report_missing_feature(avctx, "VQA Version %d", s->vqa_version);
+ return AVERROR_PATCHWELCOME;
+ default:
+ avpriv_request_sample(avctx, "VQA Version %i", s->vqa_version);
+ return AVERROR_PATCHWELCOME;
+ }
s->width = AV_RL16(&s->avctx->extradata[6]);
s->height = AV_RL16(&s->avctx->extradata[8]);
if ((ret = av_image_check_size(s->width, s->height, 0, avctx)) < 0) {
}
s->next_codebook_buffer_index = 0;
- s->frame.data[0] = NULL;
-
return 0;
fail:
av_freep(&s->codebook);
start = bytestream2_tell(gb);
while (bytestream2_tell(gb) - start < src_size) {
opcode = bytestream2_get_byte(gb);
- av_dlog(NULL, " opcode %02X: ", opcode);
+ ff_dlog(NULL, " opcode %02X: ", opcode);
/* 0x80 means that frame is finished */
if (opcode == 0x80)
count = bytestream2_get_le16(gb);
src_pos = bytestream2_get_le16(gb);
- av_dlog(NULL, "(1) copy %X bytes from absolute pos %X\n", count, src_pos);
+ ff_dlog(NULL, "(1) copy %X bytes from absolute pos %X\n", count, src_pos);
CHECK_COUNT();
CHECK_COPY(src_pos);
for (i = 0; i < count; i++)
count = bytestream2_get_le16(gb);
color = bytestream2_get_byte(gb);
- av_dlog(NULL, "(2) set %X bytes to %02X\n", count, color);
+ ff_dlog(NULL, "(2) set %X bytes to %02X\n", count, color);
CHECK_COUNT();
memset(&dest[dest_index], color, count);
dest_index += count;
count = (opcode & 0x3F) + 3;
src_pos = bytestream2_get_le16(gb);
- av_dlog(NULL, "(3) copy %X bytes from absolute pos %X\n", count, src_pos);
+ ff_dlog(NULL, "(3) copy %X bytes from absolute pos %X\n", count, src_pos);
CHECK_COUNT();
CHECK_COPY(src_pos);
for (i = 0; i < count; i++)
} else if (opcode > 0x80) {
count = opcode & 0x3F;
- av_dlog(NULL, "(4) copy %X bytes from source to dest\n", count);
+ ff_dlog(NULL, "(4) copy %X bytes from source to dest\n", count);
CHECK_COUNT();
bytestream2_get_buffer(gb, &dest[dest_index], count);
dest_index += count;
count = ((opcode & 0x70) >> 4) + 3;
src_pos = bytestream2_get_byte(gb) | ((opcode & 0x0F) << 8);
- av_dlog(NULL, "(5) copy %X bytes from relpos %X\n", count, src_pos);
+ ff_dlog(NULL, "(5) copy %X bytes from relpos %X\n", count, src_pos);
CHECK_COUNT();
CHECK_COPY(dest_index - src_pos);
for (i = 0; i < count; i++)
return 0; // let's display what we decoded anyway
}
-static int vqa_decode_chunk(VqaContext *s)
+static int vqa_decode_chunk(VqaContext *s, AVFrame *frame)
{
unsigned int chunk_type;
unsigned int chunk_size;
index_shift = 3;
for (y = 0; y < s->height; y += s->vector_height) {
for (x = 0; x < s->width; x += 4, lobytes++, hibytes++) {
- pixel_ptr = y * s->frame.linesize[0] + x;
+ pixel_ptr = y * frame->linesize[0] + x;
/* get the vector index, the method for which varies according to
* VQA file version */
/* uniform color fill - a quick hack */
if (hibyte == 0xFF) {
while (lines--) {
- s->frame.data[0][pixel_ptr + 0] = 255 - lobyte;
- s->frame.data[0][pixel_ptr + 1] = 255 - lobyte;
- s->frame.data[0][pixel_ptr + 2] = 255 - lobyte;
- s->frame.data[0][pixel_ptr + 3] = 255 - lobyte;
- pixel_ptr += s->frame.linesize[0];
+ frame->data[0][pixel_ptr + 0] = 255 - lobyte;
+ frame->data[0][pixel_ptr + 1] = 255 - lobyte;
+ frame->data[0][pixel_ptr + 2] = 255 - lobyte;
+ frame->data[0][pixel_ptr + 3] = 255 - lobyte;
+ pixel_ptr += frame->linesize[0];
}
lines=0;
}
}
while (lines--) {
- s->frame.data[0][pixel_ptr + 0] = s->codebook[vector_index++];
- s->frame.data[0][pixel_ptr + 1] = s->codebook[vector_index++];
- s->frame.data[0][pixel_ptr + 2] = s->codebook[vector_index++];
- s->frame.data[0][pixel_ptr + 3] = s->codebook[vector_index++];
- pixel_ptr += s->frame.linesize[0];
+ frame->data[0][pixel_ptr + 0] = s->codebook[vector_index++];
+ frame->data[0][pixel_ptr + 1] = s->codebook[vector_index++];
+ frame->data[0][pixel_ptr + 2] = s->codebook[vector_index++];
+ frame->data[0][pixel_ptr + 3] = s->codebook[vector_index++];
+ pixel_ptr += frame->linesize[0];
}
}
}
AVPacket *avpkt)
{
VqaContext *s = avctx->priv_data;
+ AVFrame *frame = data;
int res;
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
-
- if ((res = ff_get_buffer(avctx, &s->frame)) < 0) {
+ if ((res = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(s->avctx, AV_LOG_ERROR, " VQA Video: get_buffer() failed\n");
return res;
}
bytestream2_init(&s->gb, avpkt->data, avpkt->size);
- if ((res = vqa_decode_chunk(s)) < 0)
+ if ((res = vqa_decode_chunk(s, frame)) < 0)
return res;
/* make the palette available on the way out */
- memcpy(s->frame.data[1], s->palette, PALETTE_COUNT * 4);
- s->frame.palette_has_changed = 1;
+ memcpy(frame->data[1], s->palette, PALETTE_COUNT * 4);
+ frame->palette_has_changed = 1;
*got_frame = 1;
- *(AVFrame*)data = s->frame;
/* report that the buffer was completely consumed */
return avpkt->size;
av_freep(&s->next_codebook_buffer);
av_freep(&s->decode_buffer);
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
-
return 0;
}
AVCodec ff_vqa_decoder = {
.name = "vqavideo",
+ .long_name = NULL_IF_CONFIG_SMALL("Westwood Studios VQA (Vector Quantized Animation) video"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WS_VQA,
.priv_data_size = sizeof(VqaContext),
.init = vqa_decode_init,
.close = vqa_decode_end,
.decode = vqa_decode_frame,
- .capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Westwood Studios VQA (Vector Quantized Animation) video"),
+ .capabilities = AV_CODEC_CAP_DR1,
};
projects / ffmpeg / blobdiff