diff options
-rw-r--r-- | libavcodec/rawdec.c | 99 |
1 files changed, 63 insertions, 36 deletions
diff --git a/libavcodec/rawdec.c b/libavcodec/rawdec.c index f7143d7..01ecf78 100644 --- a/libavcodec/rawdec.c +++ b/libavcodec/rawdec.c @@ -27,6 +27,7 @@ #include "avcodec.h" #include "raw.h" #include "libavutil/avassert.h" +#include "libavutil/buffer.h" #include "libavutil/common.h" #include "libavutil/intreadwrite.h" #include "libavutil/imgutils.h" @@ -34,11 +35,11 @@ typedef struct RawVideoContext { AVClass *av_class; - uint32_t palette[AVPALETTE_COUNT]; - unsigned char *buffer; /* block of memory for holding one frame */ - int length; /* number of bytes in buffer */ + AVBufferRef *palette; + int frame_size; /* size of the frame in bytes */ int flip; - AVFrame pic; ///< AVCodecContext.coded_frame + int is_2_4_bpp; // 2 or 4 bpp raw in avi/mov + int is_yuv2; int tff; } RawVideoContext; @@ -101,6 +102,7 @@ enum AVPixelFormat ff_find_pix_fmt(const PixelFormatTag *tags, unsigned int four static av_cold int raw_init_decoder(AVCodecContext *avctx) { RawVideoContext *context = avctx->priv_data; + const AVPixFmtDescriptor *desc; if ( avctx->codec_tag == MKTAG('r','a','w',' ') || avctx->codec_tag == MKTAG('N','O','1','6')) @@ -115,32 +117,28 @@ static av_cold int raw_init_decoder(AVCodecContext *avctx) avctx->pix_fmt = avpriv_find_pix_fmt(pix_fmt_bps_avi, avctx->bits_per_coded_sample); - if (avctx->pix_fmt == AV_PIX_FMT_NONE) { - av_log(avctx, AV_LOG_ERROR, "Pixel format was not specified and cannot be detected\n"); + desc = av_pix_fmt_desc_get(avctx->pix_fmt); + if (!desc) { + av_log(avctx, AV_LOG_ERROR, "Invalid pixel format.\n"); return AVERROR(EINVAL); } - avpriv_set_systematic_pal2(context->palette, avctx->pix_fmt); - if ((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) && - avctx->pix_fmt == AV_PIX_FMT_PAL8 && - (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))) { - context->length = avpicture_get_size(avctx->pix_fmt, - FFALIGN(avctx->width, 16), - avctx->height); - if (context->length < 0) - return context->length; - context->buffer = av_malloc(context->length); - if (!context->buffer) + if (desc->flags & (PIX_FMT_PAL | PIX_FMT_PSEUDOPAL)) { + context->palette = av_buffer_alloc(AVPALETTE_SIZE); + if (!context->palette) return AVERROR(ENOMEM); - } else { - context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height); - if (context->length < 0) - return context->length; + if (desc->flags & PIX_FMT_PSEUDOPAL) + avpriv_set_systematic_pal2((uint32_t*)context->palette->data, avctx->pix_fmt); + else + memset(context->palette->data, 0, AVPALETTE_SIZE); } - context->pic.pict_type = AV_PICTURE_TYPE_I; - context->pic.key_frame = 1; - avctx->coded_frame = &context->pic; + context->frame_size = avpicture_get_size(avctx->pix_fmt, avctx->width, + avctx->height); + if ((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) && + avctx->pix_fmt == AV_PIX_FMT_PAL8 && + (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))) + context->is_2_4_bpp = 1; if ((avctx->extradata_size >= 9 && !memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) || @@ -155,6 +153,9 @@ static av_cold int raw_init_decoder(AVCodecContext *avctx) avctx->coded_frame->top_field_first = 1; } + if (avctx->codec_tag == AV_RL32("yuv2") && + avctx->pix_fmt == AV_PIX_FMT_YUYV422) + context->is_yuv2 = 1; return 0; } @@ -174,13 +175,13 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame, int buf_size = avpkt->size; int linesize_align = 4; int res, len; + int need_copy = !avpkt->buf || context->is_2_4_bpp || context->is_yuv2; AVFrame *frame = data; AVPicture *picture = data; - frame->pict_type = avctx->coded_frame->pict_type; - frame->interlaced_frame = avctx->coded_frame->interlaced_frame; - frame->top_field_first = avctx->coded_frame->top_field_first; + frame->pict_type = AV_PICTURE_TYPE_I; + frame->key_frame = 1; frame->reordered_opaque = avctx->reordered_opaque; frame->pkt_pts = avctx->pkt->pts; av_frame_set_pkt_pos (frame, avctx->pkt->pos); @@ -194,11 +195,18 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame, if ((res = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0) return res; + if (need_copy) + frame->buf[0] = av_buffer_alloc(context->frame_size); + else + frame->buf[0] = av_buffer_ref(avpkt->buf); + if (!frame->buf[0]) + return AVERROR(ENOMEM); + //2bpp and 4bpp raw in avi and mov (yes this is ugly ...) - if (context->buffer) { + if (context->is_2_4_bpp) { int i; - uint8_t *dst = context->buffer; - buf_size = context->length - AVPALETTE_SIZE; + uint8_t *dst = frame->buf[0]->data; + buf_size = context->frame_size - AVPALETTE_SIZE; if (avctx->bits_per_coded_sample == 4) { for (i = 0; 2 * i + 1 < buf_size && i<avpkt->size; i++) { dst[2 * i + 0] = buf[i] >> 4; @@ -216,31 +224,39 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame, linesize_align = 16; } buf = dst; + } else if (need_copy) { + memcpy(frame->buf[0]->data, buf, FFMIN(buf_size, context->frame_size)); + buf = frame->buf[0]->data; } if (avctx->codec_tag == MKTAG('A', 'V', '1', 'x') || avctx->codec_tag == MKTAG('A', 'V', 'u', 'p')) - buf += buf_size - context->length; + buf += buf_size - context->frame_size; - len = context->length - (avctx->pix_fmt==AV_PIX_FMT_PAL8 ? AVPALETTE_SIZE : 0); + len = context->frame_size - (avctx->pix_fmt==AV_PIX_FMT_PAL8 ? AVPALETTE_SIZE : 0); if (buf_size < len) { - av_log(avctx, AV_LOG_ERROR, "Invalid buffer size, packet size %d < expected length %d\n", buf_size, len); + av_log(avctx, AV_LOG_ERROR, "Invalid buffer size, packet size %d < expected frame_size %d\n", buf_size, len); return AVERROR(EINVAL); } if ((res = avpicture_fill(picture, buf, avctx->pix_fmt, avctx->width, avctx->height)) < 0) return res; - if ((avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->length) || + if ((avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->frame_size) || (desc->flags & PIX_FMT_PSEUDOPAL)) { frame->data[1] = (uint8_t*)context->palette; } + if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL); if (pal) { - memcpy(frame->data[1], pal, AVPALETTE_SIZE); + av_buffer_unref(&context->palette); + context->palette = av_buffer_alloc(AVPALETTE_SIZE); + if (!context->palette) + return AVERROR(ENOMEM); + memcpy(context->palette->data, pal, AVPALETTE_SIZE); frame->palette_has_changed = 1; } } @@ -263,6 +279,17 @@ static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame, frame->linesize[1] = FFALIGN(frame->linesize[1], linesize_align); } + if ((avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->frame_size) || + (desc->flags & PIX_FMT_PSEUDOPAL)) { + frame->buf[1] = av_buffer_ref(context->palette); + if (!frame->buf[1]) + return AVERROR(ENOMEM); + frame->data[1] = frame->buf[1]->data; + } + if (avctx->pix_fmt == AV_PIX_FMT_BGR24 && + ((frame->linesize[0] + 3) & ~3) * avctx->height <= buf_size) + frame->linesize[0] = (frame->linesize[0] + 3) & ~3; + if (context->flip) flip(avctx, picture); @@ -306,7 +333,7 @@ static av_cold int raw_close_decoder(AVCodecContext *avctx) { RawVideoContext *context = avctx->priv_data; - av_freep(&context->buffer); + av_buffer_unref(&context->palette); return 0; } |