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https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
utvideo: general cosmetics
General cosmetics, such as keeping lines under 80 characters, fixing a couple of typos (predition -> prediction) and a general style fix that was pointed out by Derek when I was having my sliced multithreading patch in review by him. Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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@ -175,9 +175,10 @@ static int decode_plane(UtvideoContext *c, int plane_no,
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continue;
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}
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memcpy(c->slice_bits, src + slice_data_start + c->slices * 4, slice_size);
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memcpy(c->slice_bits, src + slice_data_start + c->slices * 4,
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slice_size);
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memset(c->slice_bits + slice_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
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c->dsp.bswap_buf((uint32_t*)c->slice_bits, (uint32_t*)c->slice_bits,
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c->dsp.bswap_buf((uint32_t *) c->slice_bits, (uint32_t *) c->slice_bits,
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(slice_data_end - slice_data_start + 3) >> 2);
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init_get_bits(&gb, c->slice_bits, slice_size * 8);
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@ -185,7 +186,8 @@ static int decode_plane(UtvideoContext *c, int plane_no,
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for (j = sstart; j < send; j++) {
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for (i = 0; i < width * step; i += step) {
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if (get_bits_left(&gb) <= 0) {
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av_log(c->avctx, AV_LOG_ERROR, "Slice decoding ran out of bits\n");
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av_log(c->avctx, AV_LOG_ERROR,
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"Slice decoding ran out of bits\n");
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goto fail;
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}
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pix = get_vlc2(&gb, vlc.table, vlc.bits, 4);
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@ -202,8 +204,8 @@ static int decode_plane(UtvideoContext *c, int plane_no,
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dest += stride;
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}
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if (get_bits_left(&gb) > 32)
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av_log(c->avctx, AV_LOG_WARNING, "%d bits left after decoding slice\n",
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get_bits_left(&gb));
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av_log(c->avctx, AV_LOG_WARNING,
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"%d bits left after decoding slice\n", get_bits_left(&gb));
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}
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ff_free_vlc(&vlc);
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@ -216,7 +218,8 @@ fail:
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static const int rgb_order[4] = { 1, 2, 0, 3 };
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static void restore_rgb_planes(uint8_t *src, int step, int stride, int width, int height)
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static void restore_rgb_planes(uint8_t *src, int step, int stride, int width,
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int height)
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{
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int i, j;
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uint8_t r, g, b;
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@ -243,8 +246,9 @@ static void restore_median(uint8_t *src, int step, int stride,
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const int cmask = ~rmode;
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for (slice = 0; slice < slices; slice++) {
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slice_start = ((slice * height) / slices) & cmask;
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slice_height = ((((slice + 1) * height) / slices) & cmask) - slice_start;
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slice_start = ((slice * height) / slices) & cmask;
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slice_height = ((((slice + 1) * height) / slices) & cmask) -
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slice_start;
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bsrc = src + slice_start * stride;
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@ -253,29 +257,29 @@ static void restore_median(uint8_t *src, int step, int stride,
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A = bsrc[0];
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for (i = step; i < width * step; i += step) {
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bsrc[i] += A;
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A = bsrc[i];
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A = bsrc[i];
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}
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bsrc += stride;
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if (slice_height == 1)
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continue;
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// second line - first element has top predition, the rest uses median
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C = bsrc[-stride];
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// second line - first element has top prediction, the rest uses median
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C = bsrc[-stride];
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bsrc[0] += C;
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A = bsrc[0];
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A = bsrc[0];
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for (i = step; i < width * step; i += step) {
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B = bsrc[i - stride];
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B = bsrc[i - stride];
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bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
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C = B;
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A = bsrc[i];
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C = B;
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A = bsrc[i];
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}
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bsrc += stride;
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// the rest of lines use continuous median prediction
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for (j = 2; j < slice_height; j++) {
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for (i = 0; i < width * step; i += step) {
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B = bsrc[i - stride];
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B = bsrc[i - stride];
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bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
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C = B;
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A = bsrc[i];
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C = B;
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A = bsrc[i];
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}
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bsrc += stride;
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}
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@ -293,67 +297,69 @@ static void restore_median_il(uint8_t *src, int step, int stride,
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int A, B, C;
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uint8_t *bsrc;
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int slice_start, slice_height;
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const int cmask = ~(rmode ? 3 : 1);
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const int cmask = ~(rmode ? 3 : 1);
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const int stride2 = stride << 1;
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for (slice = 0; slice < slices; slice++) {
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slice_start = ((slice * height) / slices) & cmask;
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slice_height = ((((slice + 1) * height) / slices) & cmask) - slice_start;
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slice_height = ((((slice + 1) * height) / slices) & cmask) -
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slice_start;
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slice_height >>= 1;
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bsrc = src + slice_start * stride;
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// first line - left neighbour prediction
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bsrc[0] += 0x80;
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A = bsrc[0];
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A = bsrc[0];
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for (i = step; i < width * step; i += step) {
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bsrc[i] += A;
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A = bsrc[i];
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A = bsrc[i];
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}
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for (i = 0; i < width * step; i += step) {
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bsrc[stride + i] += A;
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A = bsrc[stride + i];
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A = bsrc[stride + i];
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}
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bsrc += stride2;
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if (slice_height == 1)
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continue;
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// second line - first element has top predition, the rest uses median
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C = bsrc[-stride2];
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// second line - first element has top prediction, the rest uses median
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C = bsrc[-stride2];
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bsrc[0] += C;
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A = bsrc[0];
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A = bsrc[0];
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for (i = step; i < width * step; i += step) {
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B = bsrc[i - stride2];
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B = bsrc[i - stride2];
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bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
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C = B;
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A = bsrc[i];
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C = B;
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A = bsrc[i];
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}
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for (i = 0; i < width * step; i += step) {
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B = bsrc[i - stride];
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B = bsrc[i - stride];
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bsrc[stride + i] += mid_pred(A, B, (uint8_t)(A + B - C));
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C = B;
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A = bsrc[stride + i];
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C = B;
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A = bsrc[stride + i];
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}
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bsrc += stride2;
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// the rest of lines use continuous median prediction
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for (j = 2; j < slice_height; j++) {
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for (i = 0; i < width * step; i += step) {
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B = bsrc[i - stride2];
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B = bsrc[i - stride2];
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bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
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C = B;
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A = bsrc[i];
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C = B;
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A = bsrc[i];
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}
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for (i = 0; i < width * step; i += step) {
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B = bsrc[i - stride];
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B = bsrc[i - stride];
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bsrc[i + stride] += mid_pred(A, B, (uint8_t)(A + B - C));
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C = B;
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A = bsrc[i + stride];
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C = B;
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A = bsrc[i + stride];
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}
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bsrc += stride2;
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}
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}
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}
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static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
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static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
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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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@ -376,7 +382,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
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ff_thread_finish_setup(avctx);
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/* parse plane structure to retrieve frame flags and validate slice offsets */
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/* parse plane structure to get frame flags and validate slice offsets */
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bytestream2_init(&gb, buf, buf_size);
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for (i = 0; i < c->planes; i++) {
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plane_start[i] = gb.buffer;
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@ -443,8 +449,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
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break;
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case PIX_FMT_YUV420P:
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for (i = 0; i < 3; i++) {
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ret = decode_plane(c, i, c->pic.data[i], 1,
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c->pic.linesize[i], avctx->width >> !!i, avctx->height >> !!i,
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ret = decode_plane(c, i, c->pic.data[i], 1, c->pic.linesize[i],
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avctx->width >> !!i, avctx->height >> !!i,
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plane_start[i], c->frame_pred == PRED_LEFT);
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if (ret)
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return ret;
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@ -464,8 +470,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
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break;
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case PIX_FMT_YUV422P:
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for (i = 0; i < 3; i++) {
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ret = decode_plane(c, i, c->pic.data[i], 1,
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c->pic.linesize[i], avctx->width >> !!i, avctx->height,
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ret = decode_plane(c, i, c->pic.data[i], 1, c->pic.linesize[i],
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avctx->width >> !!i, avctx->height,
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plane_start[i], c->frame_pred == PRED_LEFT);
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if (ret)
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return ret;
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@ -502,7 +508,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
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ff_dsputil_init(&c->dsp, avctx);
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if (avctx->extradata_size < 16) {
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av_log(avctx, AV_LOG_ERROR, "Insufficient extradata size %d, should be at least 16\n",
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av_log(avctx, AV_LOG_ERROR,
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"Insufficient extradata size %d, should be at least 16\n",
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avctx->extradata_size);
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return AVERROR_INVALIDDATA;
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}
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@ -510,7 +517,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
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av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
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avctx->extradata[3], avctx->extradata[2],
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avctx->extradata[1], avctx->extradata[0]);
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av_log(avctx, AV_LOG_DEBUG, "Original format %X\n", AV_RB32(avctx->extradata + 4));
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av_log(avctx, AV_LOG_DEBUG, "Original format %X\n",
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AV_RB32(avctx->extradata + 4));
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c->frame_info_size = AV_RL32(avctx->extradata + 8);
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c->flags = AV_RL32(avctx->extradata + 12);
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