static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width) { uint32_t val; int i; for( i = 0; i < width-5; i += 6 ){ READ_PIXELS(u, y, v); READ_PIXELS(y, u, y); READ_PIXELS(v, y, u); READ_PIXELS(y, v, y); } }
static void v210_convert(uint16_t *dst, const uint32_t *bytes, const int width, const int height) { const int stride = ((width + 47) / 48) * 48 * 8 / 3 / 4; uint16_t *y = &dst[0]; uint16_t *u = &dst[width * height * 2 / 2]; uint16_t *v = &dst[width * height * 3 / 2]; #define READ_PIXELS(a, b, c) \ do { \ val = av_le2ne32(*src++); \ *a++ = val & 0x3FF; \ *b++ = (val >> 10) & 0x3FF; \ *c++ = (val >> 20) & 0x3FF; \ } while (0) for (int h = 0; h < height; h++) { const uint32_t *src = bytes; uint32_t val = 0; int w; for (w = 0; w < width - 5; w += 6) { READ_PIXELS(u, y, v); READ_PIXELS(y, u, y); READ_PIXELS(v, y, u); READ_PIXELS(y, v, y); } if (w < width - 1) { READ_PIXELS(u, y, v); val = av_le2ne32(*src++); *y++ = val & 0x3FF; } if (w < width - 3) { *u++ = (val >> 10) & 0x3FF; *y++ = (val >> 20) & 0x3FF; val = av_le2ne32(*src++); *v++ = val & 0x3FF; *y++ = (val >> 10) & 0x3FF; } bytes += stride; }
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) { V210DecContext *s = avctx->priv_data; int h, w, ret, stride, aligned_input; AVFrame *pic = data; const uint8_t *psrc = avpkt->data; uint16_t *y, *u, *v; if (s->custom_stride ) stride = s->custom_stride; else { int aligned_width = ((avctx->width + 47) / 48) * 48; stride = aligned_width * 8 / 3; } if (avpkt->size < stride * avctx->height) { if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) { stride = avpkt->size / avctx->height; if (!s->stride_warning_shown) av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n"); s->stride_warning_shown = 1; } else { av_log(avctx, AV_LOG_ERROR, "packet too small\n"); return AVERROR_INVALIDDATA; } } aligned_input = !((uintptr_t)psrc & 0xf) && !(stride & 0xf); if (aligned_input != s->aligned_input) { s->aligned_input = aligned_input; if (HAVE_MMX) v210_x86_init(s); } if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) return ret; y = (uint16_t*)pic->data[0]; u = (uint16_t*)pic->data[1]; v = (uint16_t*)pic->data[2]; pic->pict_type = AV_PICTURE_TYPE_I; pic->key_frame = 1; for (h = 0; h < avctx->height; h++) { const uint32_t *src = (const uint32_t*)psrc; uint32_t val; w = (avctx->width / 6) * 6; s->unpack_frame(src, y, u, v, w); y += w; u += w >> 1; v += w >> 1; src += (w << 1) / 3; if (w < avctx->width - 1) { READ_PIXELS(u, y, v); val = av_le2ne32(*src++); *y++ = val & 0x3FF; if (w < avctx->width - 3) { *u++ = (val >> 10) & 0x3FF; *y++ = (val >> 20) & 0x3FF; val = av_le2ne32(*src++); *v++ = val & 0x3FF; *y++ = (val >> 10) & 0x3FF; } }
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) { int h, w; AVFrame *pic = avctx->coded_frame; const uint8_t *psrc = avpkt->data; uint16_t *y, *u, *v; int aligned_width = ((avctx->width + 47) / 48) * 48; int stride = aligned_width * 8 / 3; if (pic->data[0]) avctx->release_buffer(avctx, pic); if (avpkt->size < stride * avctx->height) { av_log(avctx, AV_LOG_ERROR, "packet too small\n"); return -1; } pic->reference = 0; if (avctx->get_buffer(avctx, pic) < 0) return -1; y = (uint16_t*)pic->data[0]; u = (uint16_t*)pic->data[1]; v = (uint16_t*)pic->data[2]; pic->pict_type = AV_PICTURE_TYPE_I; pic->key_frame = 1; #define READ_PIXELS(a, b, c) \ do { \ val = av_le2ne32(*src++); \ *a++ = val & 0x3FF; \ *b++ = (val >> 10) & 0x3FF; \ *c++ = (val >> 20) & 0x3FF; \ } while (0) for (h = 0; h < avctx->height; h++) { const uint32_t *src = (const uint32_t*)psrc; uint32_t val; for (w = 0; w < avctx->width - 5; w += 6) { READ_PIXELS(u, y, v); READ_PIXELS(y, u, y); READ_PIXELS(v, y, u); READ_PIXELS(y, v, y); } if (w < avctx->width - 1) { READ_PIXELS(u, y, v); val = av_le2ne32(*src++); *y++ = val & 0x3FF; } if (w < avctx->width - 3) { *u++ = (val >> 10) & 0x3FF; *y++ = (val >> 20) & 0x3FF; val = av_le2ne32(*src++); *v++ = val & 0x3FF; *y++ = (val >> 10) & 0x3FF; } psrc += stride; y += pic->linesize[0] / 2 - avctx->width; u += pic->linesize[1] / 2 - avctx->width / 2; v += pic->linesize[2] / 2 - avctx->width / 2; }
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) { V210DecContext *s = avctx->priv_data; int h, w, stride, aligned_input; AVFrame *pic = avctx->coded_frame; const uint8_t *psrc = avpkt->data; uint16_t *y, *u, *v; if (s->custom_stride ) stride = s->custom_stride; else { int aligned_width = ((avctx->width + 47) / 48) * 48; stride = aligned_width * 8 / 3; } aligned_input = !((uintptr_t)psrc & 0xf) && !(stride & 0xf); if (aligned_input != s->aligned_input) { s->aligned_input = aligned_input; if (HAVE_MMX) v210_x86_init(s); } if (pic->data[0]) avctx->release_buffer(avctx, pic); if (avpkt->size < stride * avctx->height) { av_log(avctx, AV_LOG_ERROR, "packet too small\n"); return -1; } pic->reference = 0; if (avctx->get_buffer(avctx, pic) < 0) return -1; y = (uint16_t*)pic->data[0]; u = (uint16_t*)pic->data[1]; v = (uint16_t*)pic->data[2]; pic->pict_type = AV_PICTURE_TYPE_I; pic->key_frame = 1; for (h = 0; h < avctx->height; h++) { const uint32_t *src = (const uint32_t*)psrc; uint32_t val; w = (avctx->width / 6) * 6; s->unpack_frame(src, y, u, v, w); y += w; u += w >> 1; v += w >> 1; src += (w << 1) / 3; if (w < avctx->width - 1) { READ_PIXELS(u, y, v); val = av_le2ne32(*src++); *y++ = val & 0x3FF; } if (w < avctx->width - 3) { *u++ = (val >> 10) & 0x3FF; *y++ = (val >> 20) & 0x3FF; val = av_le2ne32(*src++); *v++ = val & 0x3FF; *y++ = (val >> 10) & 0x3FF; } psrc += stride; y += pic->linesize[0] / 2 - avctx->width; u += pic->linesize[1] / 2 - avctx->width / 2; v += pic->linesize[2] / 2 - avctx->width / 2; }