yading@10: /*
yading@10:  * Ut Video encoder
yading@10:  * Copyright (c) 2012 Jan Ekström
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * Ut Video encoder
yading@10:  */
yading@10: 
yading@10: #include "libavutil/intreadwrite.h"
yading@10: #include "avcodec.h"
yading@10: #include "internal.h"
yading@10: #include "bytestream.h"
yading@10: #include "put_bits.h"
yading@10: #include "dsputil.h"
yading@10: #include "mathops.h"
yading@10: #include "utvideo.h"
yading@10: #include "huffman.h"
yading@10: 
yading@10: /* Compare huffentry symbols */
yading@10: static int huff_cmp_sym(const void *a, const void *b)
yading@10: {
yading@10:     const HuffEntry *aa = a, *bb = b;
yading@10:     return aa->sym - bb->sym;
yading@10: }
yading@10: 
yading@10: static av_cold int utvideo_encode_close(AVCodecContext *avctx)
yading@10: {
yading@10:     UtvideoContext *c = avctx->priv_data;
yading@10:     int i;
yading@10: 
yading@10:     av_freep(&avctx->coded_frame);
yading@10:     av_freep(&c->slice_bits);
yading@10:     for (i = 0; i < 4; i++)
yading@10:         av_freep(&c->slice_buffer[i]);
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static av_cold int utvideo_encode_init(AVCodecContext *avctx)
yading@10: {
yading@10:     UtvideoContext *c = avctx->priv_data;
yading@10:     int i;
yading@10:     uint32_t original_format;
yading@10: 
yading@10:     c->avctx           = avctx;
yading@10:     c->frame_info_size = 4;
yading@10:     c->slice_stride    = FFALIGN(avctx->width, 32);
yading@10: 
yading@10:     switch (avctx->pix_fmt) {
yading@10:     case AV_PIX_FMT_RGB24:
yading@10:         c->planes        = 3;
yading@10:         avctx->codec_tag = MKTAG('U', 'L', 'R', 'G');
yading@10:         original_format  = UTVIDEO_RGB;
yading@10:         break;
yading@10:     case AV_PIX_FMT_RGBA:
yading@10:         c->planes        = 4;
yading@10:         avctx->codec_tag = MKTAG('U', 'L', 'R', 'A');
yading@10:         original_format  = UTVIDEO_RGBA;
yading@10:         break;
yading@10:     case AV_PIX_FMT_YUV420P:
yading@10:         if (avctx->width & 1 || avctx->height & 1) {
yading@10:             av_log(avctx, AV_LOG_ERROR,
yading@10:                    "4:2:0 video requires even width and height.\n");
yading@10:             return AVERROR_INVALIDDATA;
yading@10:         }
yading@10:         c->planes        = 3;
yading@10:         avctx->codec_tag = MKTAG('U', 'L', 'Y', '0');
yading@10:         original_format  = UTVIDEO_420;
yading@10:         break;
yading@10:     case AV_PIX_FMT_YUV422P:
yading@10:         if (avctx->width & 1) {
yading@10:             av_log(avctx, AV_LOG_ERROR,
yading@10:                    "4:2:2 video requires even width.\n");
yading@10:             return AVERROR_INVALIDDATA;
yading@10:         }
yading@10:         c->planes        = 3;
yading@10:         avctx->codec_tag = MKTAG('U', 'L', 'Y', '2');
yading@10:         original_format  = UTVIDEO_422;
yading@10:         break;
yading@10:     default:
yading@10:         av_log(avctx, AV_LOG_ERROR, "Unknown pixel format: %d\n",
yading@10:                avctx->pix_fmt);
yading@10:         return AVERROR_INVALIDDATA;
yading@10:     }
yading@10: 
yading@10:     ff_dsputil_init(&c->dsp, avctx);
yading@10: 
yading@10:     /* Check the prediction method, and error out if unsupported */
yading@10:     if (avctx->prediction_method < 0 || avctx->prediction_method > 4) {
yading@10:         av_log(avctx, AV_LOG_WARNING,
yading@10:                "Prediction method %d is not supported in Ut Video.\n",
yading@10:                avctx->prediction_method);
yading@10:         return AVERROR_OPTION_NOT_FOUND;
yading@10:     }
yading@10: 
yading@10:     if (avctx->prediction_method == FF_PRED_PLANE) {
yading@10:         av_log(avctx, AV_LOG_ERROR,
yading@10:                "Plane prediction is not supported in Ut Video.\n");
yading@10:         return AVERROR_OPTION_NOT_FOUND;
yading@10:     }
yading@10: 
yading@10:     /* Convert from libavcodec prediction type to Ut Video's */
yading@10:     c->frame_pred = ff_ut_pred_order[avctx->prediction_method];
yading@10: 
yading@10:     if (c->frame_pred == PRED_GRADIENT) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Gradient prediction is not supported.\n");
yading@10:         return AVERROR_OPTION_NOT_FOUND;
yading@10:     }
yading@10: 
yading@10:     avctx->coded_frame = avcodec_alloc_frame();
yading@10: 
yading@10:     if (!avctx->coded_frame) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
yading@10:         utvideo_encode_close(avctx);
yading@10:         return AVERROR(ENOMEM);
yading@10:     }
yading@10: 
yading@10:     /* extradata size is 4 * 32bit */
yading@10:     avctx->extradata_size = 16;
yading@10: 
yading@10:     avctx->extradata = av_mallocz(avctx->extradata_size +
yading@10:                                   FF_INPUT_BUFFER_PADDING_SIZE);
yading@10: 
yading@10:     if (!avctx->extradata) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Could not allocate extradata.\n");
yading@10:         utvideo_encode_close(avctx);
yading@10:         return AVERROR(ENOMEM);
yading@10:     }
yading@10: 
yading@10:     for (i = 0; i < c->planes; i++) {
yading@10:         c->slice_buffer[i] = av_malloc(c->slice_stride * (avctx->height + 2) +
yading@10:                                        FF_INPUT_BUFFER_PADDING_SIZE);
yading@10:         if (!c->slice_buffer[i]) {
yading@10:             av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer 1.\n");
yading@10:             utvideo_encode_close(avctx);
yading@10:             return AVERROR(ENOMEM);
yading@10:         }
yading@10:     }
yading@10: 
yading@10:     /*
yading@10:      * Set the version of the encoder.
yading@10:      * Last byte is "implementation ID", which is
yading@10:      * obtained from the creator of the format.
yading@10:      * Libavcodec has been assigned with the ID 0xF0.
yading@10:      */
yading@10:     AV_WB32(avctx->extradata, MKTAG(1, 0, 0, 0xF0));
yading@10: 
yading@10:     /*
yading@10:      * Set the "original format"
yading@10:      * Not used for anything during decoding.
yading@10:      */
yading@10:     AV_WL32(avctx->extradata + 4, original_format);
yading@10: 
yading@10:     /* Write 4 as the 'frame info size' */
yading@10:     AV_WL32(avctx->extradata + 8, c->frame_info_size);
yading@10: 
yading@10:     /*
yading@10:      * Set how many slices are going to be used.
yading@10:      * Set one slice for now.
yading@10:      */
yading@10:     c->slices = 1;
yading@10: 
yading@10:     /* Set compression mode */
yading@10:     c->compression = COMP_HUFF;
yading@10: 
yading@10:     /*
yading@10:      * Set the encoding flags:
yading@10:      * - Slice count minus 1
yading@10:      * - Interlaced encoding mode flag, set to zero for now.
yading@10:      * - Compression mode (none/huff)
yading@10:      * And write the flags.
yading@10:      */
yading@10:     c->flags  = (c->slices - 1) << 24;
yading@10:     c->flags |= 0 << 11; // bit field to signal interlaced encoding mode
yading@10:     c->flags |= c->compression;
yading@10: 
yading@10:     AV_WL32(avctx->extradata + 12, c->flags);
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static void mangle_rgb_planes(uint8_t *dst[4], int dst_stride, uint8_t *src,
yading@10:                               int step, int stride, int width, int height)
yading@10: {
yading@10:     int i, j;
yading@10:     int k = 2 * dst_stride;
yading@10:     unsigned int g;
yading@10: 
yading@10:     for (j = 0; j < height; j++) {
yading@10:         if (step == 3) {
yading@10:             for (i = 0; i < width * step; i += step) {
yading@10:                 g         = src[i + 1];
yading@10:                 dst[0][k] = g;
yading@10:                 g        += 0x80;
yading@10:                 dst[1][k] = src[i + 2] - g;
yading@10:                 dst[2][k] = src[i + 0] - g;
yading@10:                 k++;
yading@10:             }
yading@10:         } else {
yading@10:             for (i = 0; i < width * step; i += step) {
yading@10:                 g         = src[i + 1];
yading@10:                 dst[0][k] = g;
yading@10:                 g        += 0x80;
yading@10:                 dst[1][k] = src[i + 2] - g;
yading@10:                 dst[2][k] = src[i + 0] - g;
yading@10:                 dst[3][k] = src[i + 3];
yading@10:                 k++;
yading@10:             }
yading@10:         }
yading@10:         k += dst_stride - width;
yading@10:         src += stride;
yading@10:     }
yading@10: }
yading@10: 
yading@10: /* Write data to a plane, no prediction applied */
yading@10: static void write_plane(uint8_t *src, uint8_t *dst, int stride,
yading@10:                         int width, int height)
yading@10: {
yading@10:     int i, j;
yading@10: 
yading@10:     for (j = 0; j < height; j++) {
yading@10:         for (i = 0; i < width; i++)
yading@10:             *dst++ = src[i];
yading@10: 
yading@10:         src += stride;
yading@10:     }
yading@10: }
yading@10: 
yading@10: /* Write data to a plane with left prediction */
yading@10: static void left_predict(uint8_t *src, uint8_t *dst, int stride,
yading@10:                          int width, int height)
yading@10: {
yading@10:     int i, j;
yading@10:     uint8_t prev;
yading@10: 
yading@10:     prev = 0x80; /* Set the initial value */
yading@10:     for (j = 0; j < height; j++) {
yading@10:         for (i = 0; i < width; i++) {
yading@10:             *dst++ = src[i] - prev;
yading@10:             prev   = src[i];
yading@10:         }
yading@10:         src += stride;
yading@10:     }
yading@10: }
yading@10: 
yading@10: /* Write data to a plane with median prediction */
yading@10: static void median_predict(UtvideoContext *c, uint8_t *src, uint8_t *dst, int stride,
yading@10:                            int width, int height)
yading@10: {
yading@10:     int i, j;
yading@10:     int A, B;
yading@10:     uint8_t prev;
yading@10: 
yading@10:     /* First line uses left neighbour prediction */
yading@10:     prev = 0x80; /* Set the initial value */
yading@10:     for (i = 0; i < width; i++) {
yading@10:         *dst++ = src[i] - prev;
yading@10:         prev   = src[i];
yading@10:     }
yading@10: 
yading@10:     if (height == 1)
yading@10:         return;
yading@10: 
yading@10:     src += stride;
yading@10: 
yading@10:     /*
yading@10:      * Second line uses top prediction for the first sample,
yading@10:      * and median for the rest.
yading@10:      */
yading@10:     A = B = 0;
yading@10: 
yading@10:     /* Rest of the coded part uses median prediction */
yading@10:     for (j = 1; j < height; j++) {
yading@10:         c->dsp.sub_hfyu_median_prediction(dst, src - stride, src, width, &A, &B);
yading@10:         dst += width;
yading@10:         src += stride;
yading@10:     }
yading@10: }
yading@10: 
yading@10: /* Count the usage of values in a plane */
yading@10: static void count_usage(uint8_t *src, int width,
yading@10:                         int height, uint64_t *counts)
yading@10: {
yading@10:     int i, j;
yading@10: 
yading@10:     for (j = 0; j < height; j++) {
yading@10:         for (i = 0; i < width; i++) {
yading@10:             counts[src[i]]++;
yading@10:         }
yading@10:         src += width;
yading@10:     }
yading@10: }
yading@10: 
yading@10: /* Calculate the actual huffman codes from the code lengths */
yading@10: static void calculate_codes(HuffEntry *he)
yading@10: {
yading@10:     int last, i;
yading@10:     uint32_t code;
yading@10: 
yading@10:     qsort(he, 256, sizeof(*he), ff_ut_huff_cmp_len);
yading@10: 
yading@10:     last = 255;
yading@10:     while (he[last].len == 255 && last)
yading@10:         last--;
yading@10: 
yading@10:     code = 1;
yading@10:     for (i = last; i >= 0; i--) {
yading@10:         he[i].code  = code >> (32 - he[i].len);
yading@10:         code       += 0x80000000u >> (he[i].len - 1);
yading@10:     }
yading@10: 
yading@10:     qsort(he, 256, sizeof(*he), huff_cmp_sym);
yading@10: }
yading@10: 
yading@10: /* Write huffman bit codes to a memory block */
yading@10: static int write_huff_codes(uint8_t *src, uint8_t *dst, int dst_size,
yading@10:                             int width, int height, HuffEntry *he)
yading@10: {
yading@10:     PutBitContext pb;
yading@10:     int i, j;
yading@10:     int count;
yading@10: 
yading@10:     init_put_bits(&pb, dst, dst_size);
yading@10: 
yading@10:     /* Write the codes */
yading@10:     for (j = 0; j < height; j++) {
yading@10:         for (i = 0; i < width; i++)
yading@10:             put_bits(&pb, he[src[i]].len, he[src[i]].code);
yading@10: 
yading@10:         src += width;
yading@10:     }
yading@10: 
yading@10:     /* Pad output to a 32bit boundary */
yading@10:     count = put_bits_count(&pb) & 0x1F;
yading@10: 
yading@10:     if (count)
yading@10:         put_bits(&pb, 32 - count, 0);
yading@10: 
yading@10:     /* Get the amount of bits written */
yading@10:     count = put_bits_count(&pb);
yading@10: 
yading@10:     /* Flush the rest with zeroes */
yading@10:     flush_put_bits(&pb);
yading@10: 
yading@10:     return count;
yading@10: }
yading@10: 
yading@10: static int encode_plane(AVCodecContext *avctx, uint8_t *src,
yading@10:                         uint8_t *dst, int stride,
yading@10:                         int width, int height, PutByteContext *pb)
yading@10: {
yading@10:     UtvideoContext *c        = avctx->priv_data;
yading@10:     uint8_t  lengths[256];
yading@10:     uint64_t counts[256]     = { 0 };
yading@10: 
yading@10:     HuffEntry he[256];
yading@10: 
yading@10:     uint32_t offset = 0, slice_len = 0;
yading@10:     int      i, sstart, send = 0;
yading@10:     int      symbol;
yading@10: 
yading@10:     /* Do prediction / make planes */
yading@10:     switch (c->frame_pred) {
yading@10:     case PRED_NONE:
yading@10:         for (i = 0; i < c->slices; i++) {
yading@10:             sstart = send;
yading@10:             send   = height * (i + 1) / c->slices;
yading@10:             write_plane(src + sstart * stride, dst + sstart * width,
yading@10:                         stride, width, send - sstart);
yading@10:         }
yading@10:         break;
yading@10:     case PRED_LEFT:
yading@10:         for (i = 0; i < c->slices; i++) {
yading@10:             sstart = send;
yading@10:             send   = height * (i + 1) / c->slices;
yading@10:             left_predict(src + sstart * stride, dst + sstart * width,
yading@10:                          stride, width, send - sstart);
yading@10:         }
yading@10:         break;
yading@10:     case PRED_MEDIAN:
yading@10:         for (i = 0; i < c->slices; i++) {
yading@10:             sstart = send;
yading@10:             send   = height * (i + 1) / c->slices;
yading@10:             median_predict(c, src + sstart * stride, dst + sstart * width,
yading@10:                            stride, width, send - sstart);
yading@10:         }
yading@10:         break;
yading@10:     default:
yading@10:         av_log(avctx, AV_LOG_ERROR, "Unknown prediction mode: %d\n",
yading@10:                c->frame_pred);
yading@10:         return AVERROR_OPTION_NOT_FOUND;
yading@10:     }
yading@10: 
yading@10:     /* Count the usage of values */
yading@10:     count_usage(dst, width, height, counts);
yading@10: 
yading@10:     /* Check for a special case where only one symbol was used */
yading@10:     for (symbol = 0; symbol < 256; symbol++) {
yading@10:         /* If non-zero count is found, see if it matches width * height */
yading@10:         if (counts[symbol]) {
yading@10:             /* Special case if only one symbol was used */
yading@10:             if (counts[symbol] == width * (int64_t)height) {
yading@10:                 /*
yading@10:                  * Write a zero for the single symbol
yading@10:                  * used in the plane, else 0xFF.
yading@10:                  */
yading@10:                 for (i = 0; i < 256; i++) {
yading@10:                     if (i == symbol)
yading@10:                         bytestream2_put_byte(pb, 0);
yading@10:                     else
yading@10:                         bytestream2_put_byte(pb, 0xFF);
yading@10:                 }
yading@10: 
yading@10:                 /* Write zeroes for lengths */
yading@10:                 for (i = 0; i < c->slices; i++)
yading@10:                     bytestream2_put_le32(pb, 0);
yading@10: 
yading@10:                 /* And that's all for that plane folks */
yading@10:                 return 0;
yading@10:             }
yading@10:             break;
yading@10:         }
yading@10:     }
yading@10: 
yading@10:     /* Calculate huffman lengths */
yading@10:     ff_huff_gen_len_table(lengths, counts);
yading@10: 
yading@10:     /*
yading@10:      * Write the plane's header into the output packet:
yading@10:      * - huffman code lengths (256 bytes)
yading@10:      * - slice end offsets (gotten from the slice lengths)
yading@10:      */
yading@10:     for (i = 0; i < 256; i++) {
yading@10:         bytestream2_put_byte(pb, lengths[i]);
yading@10: 
yading@10:         he[i].len = lengths[i];
yading@10:         he[i].sym = i;
yading@10:     }
yading@10: 
yading@10:     /* Calculate the huffman codes themselves */
yading@10:     calculate_codes(he);
yading@10: 
yading@10:     send = 0;
yading@10:     for (i = 0; i < c->slices; i++) {
yading@10:         sstart  = send;
yading@10:         send    = height * (i + 1) / c->slices;
yading@10: 
yading@10:         /*
yading@10:          * Write the huffman codes to a buffer,
yading@10:          * get the offset in bits and convert to bytes.
yading@10:          */
yading@10:         offset += write_huff_codes(dst + sstart * width, c->slice_bits,
yading@10:                                    width * (send - sstart), width,
yading@10:                                    send - sstart, he) >> 3;
yading@10: 
yading@10:         slice_len = offset - slice_len;
yading@10: 
yading@10:         /* Byteswap the written huffman codes */
yading@10:         c->dsp.bswap_buf((uint32_t *) c->slice_bits,
yading@10:                          (uint32_t *) c->slice_bits,
yading@10:                          slice_len >> 2);
yading@10: 
yading@10:         /* Write the offset to the stream */
yading@10:         bytestream2_put_le32(pb, offset);
yading@10: 
yading@10:         /* Seek to the data part of the packet */
yading@10:         bytestream2_seek_p(pb, 4 * (c->slices - i - 1) +
yading@10:                            offset - slice_len, SEEK_CUR);
yading@10: 
yading@10:         /* Write the slices' data into the output packet */
yading@10:         bytestream2_put_buffer(pb, c->slice_bits, slice_len);
yading@10: 
yading@10:         /* Seek back to the slice offsets */
yading@10:         bytestream2_seek_p(pb, -4 * (c->slices - i - 1) - offset,
yading@10:                            SEEK_CUR);
yading@10: 
yading@10:         slice_len = offset;
yading@10:     }
yading@10: 
yading@10:     /* And at the end seek to the end of written slice(s) */
yading@10:     bytestream2_seek_p(pb, offset, SEEK_CUR);
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int utvideo_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
yading@10:                                 const AVFrame *pic, int *got_packet)
yading@10: {
yading@10:     UtvideoContext *c = avctx->priv_data;
yading@10:     PutByteContext pb;
yading@10: 
yading@10:     uint32_t frame_info;
yading@10: 
yading@10:     uint8_t *dst;
yading@10: 
yading@10:     int width = avctx->width, height = avctx->height;
yading@10:     int i, ret = 0;
yading@10: 
yading@10:     /* Allocate a new packet if needed, and set it to the pointer dst */
yading@10:     ret = ff_alloc_packet2(avctx, pkt, (256 + 4 * c->slices + width * height) *
yading@10:                            c->planes + 4);
yading@10: 
yading@10:     if (ret < 0)
yading@10:         return ret;
yading@10: 
yading@10:     dst = pkt->data;
yading@10: 
yading@10:     bytestream2_init_writer(&pb, dst, pkt->size);
yading@10: 
yading@10:     av_fast_malloc(&c->slice_bits, &c->slice_bits_size,
yading@10:                    width * height + FF_INPUT_BUFFER_PADDING_SIZE);
yading@10: 
yading@10:     if (!c->slice_bits) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer 2.\n");
yading@10:         return AVERROR(ENOMEM);
yading@10:     }
yading@10: 
yading@10:     /* In case of RGB, mangle the planes to Ut Video's format */
yading@10:     if (avctx->pix_fmt == AV_PIX_FMT_RGBA || avctx->pix_fmt == AV_PIX_FMT_RGB24)
yading@10:         mangle_rgb_planes(c->slice_buffer, c->slice_stride, pic->data[0],
yading@10:                           c->planes, pic->linesize[0], width, height);
yading@10: 
yading@10:     /* Deal with the planes */
yading@10:     switch (avctx->pix_fmt) {
yading@10:     case AV_PIX_FMT_RGB24:
yading@10:     case AV_PIX_FMT_RGBA:
yading@10:         for (i = 0; i < c->planes; i++) {
yading@10:             ret = encode_plane(avctx, c->slice_buffer[i] + 2 * c->slice_stride,
yading@10:                                c->slice_buffer[i], c->slice_stride,
yading@10:                                width, height, &pb);
yading@10: 
yading@10:             if (ret) {
yading@10:                 av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i);
yading@10:                 return ret;
yading@10:             }
yading@10:         }
yading@10:         break;
yading@10:     case AV_PIX_FMT_YUV422P:
yading@10:         for (i = 0; i < c->planes; i++) {
yading@10:             ret = encode_plane(avctx, pic->data[i], c->slice_buffer[0],
yading@10:                                pic->linesize[i], width >> !!i, height, &pb);
yading@10: 
yading@10:             if (ret) {
yading@10:                 av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i);
yading@10:                 return ret;
yading@10:             }
yading@10:         }
yading@10:         break;
yading@10:     case AV_PIX_FMT_YUV420P:
yading@10:         for (i = 0; i < c->planes; i++) {
yading@10:             ret = encode_plane(avctx, pic->data[i], c->slice_buffer[0],
yading@10:                                pic->linesize[i], width >> !!i, height >> !!i,
yading@10:                                &pb);
yading@10: 
yading@10:             if (ret) {
yading@10:                 av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i);
yading@10:                 return ret;
yading@10:             }
yading@10:         }
yading@10:         break;
yading@10:     default:
yading@10:         av_log(avctx, AV_LOG_ERROR, "Unknown pixel format: %d\n",
yading@10:                avctx->pix_fmt);
yading@10:         return AVERROR_INVALIDDATA;
yading@10:     }
yading@10: 
yading@10:     /*
yading@10:      * Write frame information (LE 32bit unsigned)
yading@10:      * into the output packet.
yading@10:      * Contains the prediction method.
yading@10:      */
yading@10:     frame_info = c->frame_pred << 8;
yading@10:     bytestream2_put_le32(&pb, frame_info);
yading@10: 
yading@10:     /*
yading@10:      * At least currently Ut Video is IDR only.
yading@10:      * Set flags accordingly.
yading@10:      */
yading@10:     avctx->coded_frame->key_frame = 1;
yading@10:     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
yading@10: 
yading@10:     pkt->size   = bytestream2_tell_p(&pb);
yading@10:     pkt->flags |= AV_PKT_FLAG_KEY;
yading@10: 
yading@10:     /* Packet should be done */
yading@10:     *got_packet = 1;
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: AVCodec ff_utvideo_encoder = {
yading@10:     .name           = "utvideo",
yading@10:     .type           = AVMEDIA_TYPE_VIDEO,
yading@10:     .id             = AV_CODEC_ID_UTVIDEO,
yading@10:     .priv_data_size = sizeof(UtvideoContext),
yading@10:     .init           = utvideo_encode_init,
yading@10:     .encode2        = utvideo_encode_frame,
yading@10:     .close          = utvideo_encode_close,
yading@10:     .pix_fmts       = (const enum AVPixelFormat[]) {
yading@10:                           AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, AV_PIX_FMT_YUV422P,
yading@10:                           AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE
yading@10:                       },
yading@10:     .long_name      = NULL_IF_CONFIG_SMALL("Ut Video"),
yading@10: };