mirror of https://git.ffmpeg.org/ffmpeg.git
dsicinav: K&R formatting cosmetics
This commit is contained in:
Luca Barbato
parent
6756d98cec
commit
fcae3ff124
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@ -108,27 +108,30 @@ static av_cold int cinvideo_decode_init(AVCodecContext *avctx)
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return 0;
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}
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static void cin_apply_delta_data(const unsigned char *src, unsigned char *dst, int size)
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static void cin_apply_delta_data(const unsigned char *src, unsigned char *dst,
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int size)
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{
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while (size--)
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*dst++ += *src++;
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}
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static int cin_decode_huffman(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
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static int cin_decode_huffman(const unsigned char *src, int src_size,
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unsigned char *dst, int dst_size)
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{
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int b, huff_code = 0;
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unsigned char huff_code_table[15];
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unsigned char *dst_cur = dst;
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unsigned char *dst_end = dst + dst_size;
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unsigned char *dst_cur = dst;
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unsigned char *dst_end = dst + dst_size;
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const unsigned char *src_end = src + src_size;
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memcpy(huff_code_table, src, 15); src += 15;
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memcpy(huff_code_table, src, 15);
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src += 15;
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while (src < src_end) {
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huff_code = *src++;
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if ((huff_code >> 4) == 15) {
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b = huff_code << 4;
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huff_code = *src++;
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b = huff_code << 4;
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huff_code = *src++;
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*dst_cur++ = b | (huff_code >> 4);
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} else
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*dst_cur++ = huff_code_table[huff_code >> 4];
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@ -147,11 +150,12 @@ static int cin_decode_huffman(const unsigned char *src, int src_size, unsigned c
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return dst_cur - dst;
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}
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static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
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static int cin_decode_lzss(const unsigned char *src, int src_size,
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unsigned char *dst, int dst_size)
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{
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uint16_t cmd;
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int i, sz, offset, code;
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unsigned char *dst_end = dst + dst_size, *dst_start = dst;
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unsigned char *dst_end = dst + dst_size, *dst_start = dst;
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const unsigned char *src_end = src + src_size;
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while (src < src_end && dst < dst_end) {
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@ -160,13 +164,15 @@ static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char
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if (code & (1 << i)) {
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*dst++ = *src++;
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} else {
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cmd = AV_RL16(src); src += 2;
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cmd = AV_RL16(src);
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src += 2;
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offset = cmd >> 4;
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if ((int) (dst - dst_start) < offset + 1)
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if ((int)(dst - dst_start) < offset + 1)
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return AVERROR_INVALIDDATA;
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sz = (cmd & 0xF) + 2;
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/* don't use memcpy/memmove here as the decoding routine (ab)uses */
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/* buffer overlappings to repeat bytes in the destination */
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/* don't use memcpy/memmove here as the decoding routine
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* (ab)uses buffer overlappings to repeat bytes in the
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* destination */
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sz = FFMIN(sz, dst_end - dst);
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while (sz--) {
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*dst = *(dst - offset - 1);
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@ -179,10 +185,11 @@ static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char
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return 0;
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}
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static void cin_decode_rle(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
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static void cin_decode_rle(const unsigned char *src, int src_size,
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unsigned char *dst, int dst_size)
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{
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int len, code;
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unsigned char *dst_end = dst + dst_size;
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unsigned char *dst_end = dst + dst_size;
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const unsigned char *src_end = src + src_size;
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while (src < src_end && dst < dst_end) {
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@ -203,15 +210,16 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
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void *data, int *got_frame,
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AVPacket *avpkt)
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{
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const uint8_t *buf = avpkt->data;
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int buf_size = avpkt->size;
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const uint8_t *buf = avpkt->data;
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int buf_size = avpkt->size;
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CinVideoContext *cin = avctx->priv_data;
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int i, y, palette_type, palette_colors_count, bitmap_frame_type, bitmap_frame_size, res = 0;
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int i, y, palette_type, palette_colors_count,
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bitmap_frame_type, bitmap_frame_size, res = 0;
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palette_type = buf[0];
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palette_colors_count = AV_RL16(buf+1);
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bitmap_frame_type = buf[3];
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buf += 4;
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palette_type = buf[0];
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palette_colors_count = AV_RL16(buf + 1);
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bitmap_frame_type = buf[3];
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buf += 4;
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bitmap_frame_size = buf_size - 4;
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@ -222,46 +230,48 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
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if (palette_colors_count > 256)
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return AVERROR_INVALIDDATA;
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for (i = 0; i < palette_colors_count; ++i) {
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cin->palette[i] = bytestream_get_le24(&buf);
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cin->palette[i] = bytestream_get_le24(&buf);
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bitmap_frame_size -= 3;
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}
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} else {
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for (i = 0; i < palette_colors_count; ++i) {
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cin->palette[buf[0]] = AV_RL24(buf+1);
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buf += 4;
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bitmap_frame_size -= 4;
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cin->palette[buf[0]] = AV_RL24(buf + 1);
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buf += 4;
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bitmap_frame_size -= 4;
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}
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}
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/* note: the decoding routines below assumes that surface.width = surface.pitch */
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/* note: the decoding routines below assumes that
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* surface.width = surface.pitch */
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switch (bitmap_frame_type) {
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case 9:
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cin_decode_rle(buf, bitmap_frame_size,
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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break;
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case 34:
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cin_decode_rle(buf, bitmap_frame_size,
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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break;
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case 35:
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cin_decode_huffman(buf, bitmap_frame_size,
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cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
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cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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break;
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case 36:
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bitmap_frame_size = cin_decode_huffman(buf, bitmap_frame_size,
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cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_INT_BMP],
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cin->bitmap_size);
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cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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break;
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case 37:
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cin_decode_huffman(buf, bitmap_frame_size,
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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break;
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case 38:
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res = cin_decode_lzss(buf, bitmap_frame_size,
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@ -277,12 +287,13 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
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if (res < 0)
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return res;
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cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
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break;
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}
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if ((res = ff_reget_buffer(avctx, &cin->frame)) < 0) {
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av_log(cin->avctx, AV_LOG_ERROR, "delphinecinvideo: reget_buffer() failed to allocate a frame\n");
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av_log(cin->avctx, AV_LOG_ERROR,
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"delphinecinvideo: reget_buffer() failed to allocate a frame\n");
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return res;
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}
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@ -290,10 +301,11 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
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cin->frame.palette_has_changed = 1;
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for (y = 0; y < cin->avctx->height; ++y)
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memcpy(cin->frame.data[0] + (cin->avctx->height - 1 - y) * cin->frame.linesize[0],
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cin->bitmap_table[CIN_CUR_BMP] + y * cin->avctx->width,
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cin->avctx->width);
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cin->bitmap_table[CIN_CUR_BMP] + y * cin->avctx->width,
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cin->avctx->width);
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FFSWAP(uint8_t *, cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_table[CIN_PRE_BMP]);
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FFSWAP(uint8_t *, cin->bitmap_table[CIN_CUR_BMP],
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cin->bitmap_table[CIN_PRE_BMP]);
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if ((res = av_frame_ref(data, &cin->frame)) < 0)
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return res;
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@ -332,9 +344,9 @@ static av_cold int cinaudio_decode_init(AVCodecContext *avctx)
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static int cinaudio_decode_frame(AVCodecContext *avctx, void *data,
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int *got_frame_ptr, AVPacket *avpkt)
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{
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AVFrame *frame = data;
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const uint8_t *buf = avpkt->data;
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CinAudioContext *cin = avctx->priv_data;
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AVFrame *frame = data;
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const uint8_t *buf = avpkt->data;
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CinAudioContext *cin = avctx->priv_data;
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const uint8_t *buf_end = buf + avpkt->size;
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int16_t *samples;
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int delta, ret;
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@ -350,13 +362,13 @@ static int cinaudio_decode_frame(AVCodecContext *avctx, void *data,
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delta = cin->delta;
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if (cin->initial_decode_frame) {
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cin->initial_decode_frame = 0;
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delta = sign_extend(AV_RL16(buf), 16);
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buf += 2;
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*samples++ = delta;
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delta = sign_extend(AV_RL16(buf), 16);
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buf += 2;
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*samples++ = delta;
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}
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while (buf < buf_end) {
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delta += cinaudio_delta16_table[*buf++];
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delta = av_clip_int16(delta);
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delta += cinaudio_delta16_table[*buf++];
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delta = av_clip_int16(delta);
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*samples++ = delta;
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}
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cin->delta = delta;
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@ -366,7 +378,6 @@ static int cinaudio_decode_frame(AVCodecContext *avctx, void *data,
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return avpkt->size;
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}
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AVCodec ff_dsicinvideo_decoder = {
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.name = "dsicinvideo",
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.type = AVMEDIA_TYPE_VIDEO,
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